BIPOLAR SWITCHING REGULATOR CONTROLLER MB3775 VOLTAGE D

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BIPOLAR SWITCHING REGULATOR CONTROLLER MB3775 VOLTAGE D

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DS04-27204-5Ea
BIPOLAR
SWITCHING REGULATOR CONTROLLER
MB3775
VOLTAGE DUAL SWITCHING REGULATOR CONTROLLER
MB3775 dual pulse-width-modulation control circuit. contains basic circuits required control circuits. Complete synchronization obtained using same oscillator output waveform. This provide following types output voltage: step down, step inverter. Power consumption low, thus MB3775 ideal high-efficiency portable equipment.
FEATURES
Wide supply voltage range: current consumption: typical Wide oscillation frequency range: On-chip timer latch short protection circuit On-chip under voltage lockout protection On-chip reference voltage: 1.28 Variable dead time provides control over total operating range. types packages (SOP-16pin type, SSOP-16pin type)
APPLICATIONS
monitor/panel Surveillance camera etc.
Copyright©1994-2008 FUJITSU MICROELECTRONICS LIMITED rights reserved 2006.5
MB3775
ASSIGNMENT
(TOP VIEW) +IN1 VREF +IN2
-IN1
D.T.C.1 OUT1 E/GND
-IN2
D.T.C.2 OUT2
(FPT-16P-M06) (FPT-16P-M05)
BLOCK DIAGRAM
1.28
Reference Voltage
Triangular Waveform
Error
Comp.1 S.C.P.Comp.
Comp.2
Error
1.28
Latch
U.V.L.O.
D.T.C.Comp.
MB3775
OPERATION DESCRIPTION
Reference voltage
reference voltage circuit generates stable, temperature-compensated reference from terminals (pin internal circuits. reference voltage temperature compensated VREF obtained external circuit VREF terminal (pin 16).
Oscillator
triangular waveform frequency obtained connecting external capacitor resistor terminal (pin terminals (pin amplitude this waveform from oscillator internally connected non-inverting inputs comparators. oscillator waveform available terminal (pin
Error amplifiers
error amplifier detects output voltage switching regulator. common-mode input voltage range -0.2 1.45 input reference voltage VREF terminal (pin terminal levels. Error amplifiers used either inverting non-inverting amplifiers. voltage gain fixed. Phase compensation possible connecting capacitor terminals (pins error amplifiers. error amplifier output internally connected inverting inputs comparators also short protection circuit.
Timer latch short protection circuit
timer latch short protection circuit detects output levels error amplifiers. both error amplifier outputs lower, timer circuit begins charging externally connected protection enable capacitor. output level error amplifier does drop below normal voltage range before capacitor voltage reaches transistor base-emitter voltage 0.65 latch circuit turns output drive transistor sets dead time
Under voltage lockout protection circuit
ambiguous transition state power-on momentary fluctuation supply line result loss control adversely affect even destroy system. under voltage lockout protection circuit compares internal reference voltage level with supply voltage level. supply voltage level falls below reference level latch circuit reset output drive transistor turned dead time 100%. protection enable terminal (pin pulled "Low".
comparator
Each comparator inverting inputs non-inverting input. This voltage-to-pulse-width converter controls output pulse width according input voltage. comparator turns output drive transistor when oscillator triangular waveform higher than error amplifier output dead time control terminal voltage.
Output drive transistor
open-collector output-drive transistors provide common-emitter output dielectric capability. output drive transistors source drive current switching power transistor.
MB3775
ABSOLUTE MAXIMUM RATING
Parameter Power Supply Voltage Error Input Voltage Collector Output Voltage Collector Output Current Power Dissipation Operating Ambient Temperature Storage temperature Symbol Tstg Condition °C(SOP) °C(SSOP) Rating -0.3 *620 *430 +125 Unit
packages mounted epoxy board mm). WARNING: Semiconductor devices permanently damaged application stress (voltage, current, temperature, etc.) excess absolute maximum ratings. exceed these ratings.
RECOMMENDED OPERATING CONDITIONS
Parameter Power Supply Voltage Error Input Voltage Collector Output Voltage Collector Output Current Phase Compensation Capacitor Timing Capacitor Timing Resistor Oscillator Frequency Reference Voltage Output Current Operating Ambient Temperature Symbol fOSC IREF Value -0.2 +1.45 15000 Unit
WARNING: recommended operating conditions required order ensure normal operation semiconductor device. device's electrical characteristics warranted when device operated within these ranges. Always semiconductor devices within their recommended operating condition ranges. Operation outside these ranges adversely affect reliability could result device failure. warranty made with respect uses, operating conditions, combinations represented data sheet. Users considering application outside listed conditions advised contact their representatives beforehand.
MB3775
ELECTRICAL CHARACTERISTICS
Parameter Output Voltage Output Temp. Stability Reference Section Input Stability Load Stability Condition -0.1 Symbol VREF VRTC Line Load VHYS VtPC VSTB Duty Cycle Duty Cycle Ibpc fOSC fdev Vt100 Ibdt Value 1.26 0.60 -1.4
VREF -0.1
1.28 ±0.2 2.72 2.60 0.65 -1.0 -0.2 -150
1.30 -0.6 VREF -0.15
Unit
Short Circuit Output CurVREF rent Under Voltage Lockout Protection Section Threshold Voltage Hysteresis Width Reset Voltage (VCC) Input Threshold Voltage Input Stand Voltage Protection Circuit Section Input Latch Voltage Input Source Current Comparator Threshold Voltage Triangular Waveform Oscillator Section Oscillator Frequency Frequency Deviation Frequency Stability (Ta) Input Threshold Voltage (fOSC kHz) Dead-Time Control Section Input Bias Current Latch Mode Source Current Latch Input Voltage pull pull -0.1 -0.1 -0.1
Frequency Stability (VCC)
(Continued)
MB3775
(Continued) Parameter Input Offset Voltage Input Offset Current Input Bias Current Common Mode Input Voltage Range Voltage Gain Error Section Frequency Band Width Common Mode Rejection Ratio Output Voltage Width Output Sink Current Output Source Current Comparator Section Input Threshold Voltage (fOSC=10 kHz) Input Sink Current Input Source Current Output Section Output Leak Current Output Saturation Voltage Duty Cycle Duty Cycle Output "OFF" Condition Symbol VICR CMRR VOM+ VOMIOM+ IOMVt0 Vt100 IIN+ IINLeak VSAT ICCS ICCa Value -100 -500 -0.2 1.05 -100 -1.2 -1.2 +100 +1.45 -0.7 -0.7 Unit
Stand Current Average Supply Current
MB3775
TEST CIRCUIT
INPUT TEST VCC=6
OUTPUT OUTPUT
MB3775
TEST INPUT
TIMING CHART (Internal Waveform)
Error output Triangular waveform oscillator output Dead Time input voltage Short circuit protection comparator Reference input "High" comparator output "Low" Output Transistor collector waveform Terminal waveform "High" "Low"
LOCK-OUT
DEAD TIME 100%
Short circuit protection "High" comparator output "Low" LOCK-OUT CANCEL Power supply voltage (VCC Value) Protection Enable Time (Typ Value)
MB3775
APPLICATION CIRCUIT
Fig. Chopper Type Step Down/Inverting
MB3775
Fig. Chopper Type Step Up/Inverting
MB3775
(+12
(Continued)
MB3775
(Continued)
Fig. Chopper Type Step Up/Inverting (For High Speed)
MB3775
(+12
Fig. Multi Output Type (Apply Transformer)
MB3775
V02(-12
V01(-5
V02+
V01+ (+12
MB3775
OUTPUT VOLTAGE
output voltage using connection shown Fig. error amplifiers supplied internal reference voltage circuit other internal circuits. common-mode input voltage range from -0.2 +1.45 When amplifiers operated non-inverting, inverting terminal VREF 1.28 When amplifiers operated inverting, non-inverting terminal ground.
Fig. -Connection Error Output Voltage plus [V0+ VREF R2/R1)]
VREF
Fig. -Connection Error Output Voltage minus [V0- -VREF (R2/R1)]
VREF
MB3775
TIME CONSTANT TIMER LATCH SHORT PROTECTION CIRCUIT
TIMING CHART shows configuration protection latch circuit. Error amplifier outputs, internally connected non-inverting inputs short-circuit protection comparator compared with reference voltage (1.1 connected inverting input. When load condition switching regulator stable, error amplifier output fluctuation. Thus, short-circuit protection control also kept balance, protection enable terminal (pin voltage kept about load condition drastically changes load short-circuit low-level signals (1.1 lower) input non-inverting inputs short-circuit protection comparator from error amplifiers, shortcircuit protection comparator outputs "Low" level turn transistor off. protection enable terminal voltage discharged, then short-circuit protection comparator charges externally connected protection enable capacitor according following formula: 10-6/CPE 0.65 10-6/CPE tPE/0.6 (µF) When protection enable capacitor charges about 0.65 protection latch enable under voltage lockout protection circuit turn output drive transistor off. dead time Once under voltage lockout protection circuit enabled, protection enable released; however, protection latch reset power turned off. non-inverting inputs D.T.C. comparator connected D.T.C. terminals (pins through power supply (about compared with reference voltage (about connected inverting input. prevent malfunction short protection circuit soft-start mode (using D.T.C. terminals), D.T.C. comparator outputs "High" level turn until D.T.C. terminals (pins voltage drops about
Fig. Protection Latch Circuit
S.C.P.Comp. Error Amp1 Error Amp2
U.V.L.O.
Latch
D.T.C.1 D.T.C.2
D.T.C.Comp.
MB3775
SYNCHRONIZATION
synchronize MB3775 ICs, first, specified capacitor resistor connected terminals (pins master start self oscillation. Next, applied terminals (pin slave disable charge/discharge circuit triangular wave oscillation. Finally, terminals (pin master slave connected. Instead applying terminals (pin these terminals pulled resistor (see resistance indicated dashed line Fig. Select pull-up resistance Rpull from formula given below. Rpull Rpull: Pull Resistor VCC: Power Supply Voltage Number Slave
Fig. Connection Master, Slave
MB3775
(MASTER)
Rpull
MB3775
(SLAVE)
MB3775
(SLAVE)
MB3775
TYPICAL PERFORMANCE CHARACTERISTICS
Fig. Reference voltage Power supply voltage
Fig. Average supply current Power supply voltage Average supply current (mA) Power supply voltage
Reference voltage VREF(V)
Power supply voltage
Fig. Stand current Power supply voltage
Fig. Reference voltage Operating ambient temperature 1.29
Reference voltage VREF
Stand current ICCS (mA)
1.28
1.27
1.26
1.25 Power supply voltage Error output voltage
Operating ambient temperature
Fig. Collectorsaturation saturation voltage Sink current
Fig. Error output voltage Frequency
Collectorsaturation voltage VSAT
Sink current (mA)
100k Frequency (Hz)
(Continued)
MB3775
Fig. Oscillation Frequency Timing resistor
Fig. Triangular waveform cycle Timing capacitor Triangular waveform cycle
Oscillation Frequency fOSC (Hz)
100k
Timing resistance
1500
15000 100k Timing resistor Timing resistance=15 10-1 Timing capacitor (pF)
Fig. Triangular waveform Amplitude voltage Timing capacitor
Fig. Gain/Phase Frequency
Gain Phase (deg)
Triangular waveform Amplitude voltage
Gain AV(dB)
Phase
-180
Timing capacitor (pF)
100k Frequency (Hz)
Fig. Gain/Phase Frequency (Actual Data)
Fig. Gain/Phase Frequency (Actual Data)
Gain V(dB)
Phase (deg)
Gain AV(dB)
Gain Phase
Gain Phase
-180
-180
Frequency (Hz)
Frequency (Hz)
(Continued)
Phase (deg)
MB3775
(Continued)
Fig. Gain/Phase Frequency (Actual Data) CFB=0.01
Gain (dB)
Gain Phase
-180
Frequency (Hz)
Phase (deg)
MB3775
ERROR AMPLIFIER FREQUENCY CHARACTERISTIC
Figure shows equivalent circuit error amplifier. frequency characteristic error amplifier high-frequency gain ratio resistors (set value dB). When gain about roll-off frequency adjusted changing external phase compensating capacitor (see Fig. 24). When high frequency gain needed phase must advanced frequency, connect resistor between terminals (pins shown Figure (see Fig. 25).
Fig. Error Equivalent Circuit Error
COMP
[FB]
Fig. Error Equivalent Circuit (Insert Error
COMP
[FB]
Note: shown above, frequency characteristic error amplifier external phase compensating capacitor When ceramic chip capacitor must used meet requirements small system, careful temperature characteristic. (-30 frequency characteristic, sufficient phase margin must allowed room temperature.) Ceramic chip capacitors with temperature characteristic characteristic) film capacitors recommended (see Fig. 28).
MB3775
Fig. Error Frequency characteristics
(Large) (Small) (Small) Phase (deg) Phase (deg)
Gain (dB)
(Large)
-180
100k
100M
Frequency (Hz)
Fig. Error Frequency characteristics
Gain (dB) RP=0 (Large) (Large)
RP=0
-180
100k
100M
Frequency (Hz)
MB3775
Fig. Ceramic Chip Capacitor (0.1
Temp. characteristic Temp. Ratio -30°C 0.19 +25°C +80°C 0.32
-30°C
Phase (deg)
-30°C +25°C +80°C
Gain (dB)
+80°C +25°C
Frequency (Hz)
100k
Fig. Tantal Capacitor (0.33
Temp. characteristic Temp. Ratio -30°C 0.95 1.05 +25°C +80°C 0.95 1.05
-30°C
Gain (dB)
+25°C
+80°C
-30°C
+80°C Frequency (Hz) 100k
+25°C
Fig. Film Capacitor (0.1
Temp. characteristic
-30°C +25°C +80°C
Phase (deg)
Gain (dB)
-30°C, +25°C, +80°C
-30°C,
+25°C +80°C Frequency (Hz) 100k
Phase (deg)
MB3775
EFFECT EQUIVALENT SERIES RESISTANCE SMOOTHING CAPACITOR
equivalent series resistance (ESR) smoothing capacitor DC/DC converter greatly affects loop phase characteristic. smoothing capacitor with reduces system stability increasing phase shift high-frequency region (see Fig. 30). Therefore, smoothing capacitor with high will improve system stability. careful when using semiconductor electrolytic capacitors (OS-CONTM) tantalum capacitors. Note: OS-CON trademark Sanyo Electric Co., Ltd.
Fig. Step Down DC/DC Converter Basic Circuit
Fig. Gain Frequency
Fig. Phase Frequency
Gain (dB)
Phase (deg)
100k
-180
Frequency (Hz)
100k
Frequency (Hz)
MB3775
Reference data aluminum electrolytic smoothing capacitor replaced with semiconductor electrolytic capacitor (OS-CONTM: phase shift reduced half (see Fig. 34).
Fig. DC/DC Converter characteristic Test Circuit VOUT
characteristic Between this point.
VREF Error
Fig. DC/DC Converter Gain/Phase Frequency Gain (dB) +62° VCC=10 RL=25 CP=0.1 Phase (deg) Capacitor µF(16 fosc=1
Frequency (Hz) 100k
-180
Fig. DC/DC Converter Gain/Phase Frequency Gain (dB) VCC=10 RL=25 CP=0.1 +27° Phase (deg) OS-CON22 µF(16V) fosc=1
Frequency (Hz) 100k
-180
MB3775
MEASURES ENSURING SYSTEM STABILITY WHEN SMOOTHING CAPACITOR USED
When smoothing capacitor used DC/DC converter, only apparent even high-frequency region, phase delayed almost 180°. Consequently, system phase margin stability reduced. other hand, capacitor needed reduce amount output ripple. This contrary system stability explained above. solve this problem, phase compensation used. This method increases phase margin advancing phase when phase margin reduced capacitor. three suggestions listed below recommended DC/DC converters using MB3775. shown Fig. capacitor connected parallel with output feedback resistor advance phase. formula below guideline capacitance. 2fR2 Unstable Frequency (See Fig.
Fig. External circuit example1 advance phase
VREF
Fig. DC/DC Converter Gain/Phase Frequency
+66°
Phase (deg)
Gain (dB)
Smoothing Capacitor OS-CON 4700 Frequency (Hz)
-180
100k
MB3775
shown Figure resistor (RP) connected between terminal (pins error amplifier advance phase. more increased, more phase advanced. However, gain high-frequency range also increased, which causes instability. Therefore, select optimum resistance (see Fig. 38).
Fig. External circuit example advance phase
VREF
Fig. DC/DC Converter Gain/Phase Frequency
Gain (dB) Smoothing Capacitor OS-CON Frequency (Hz)
Phase (deg)
+45°
-180
100k
MB3775
shown Fig. phase advanced using both example (Fig. 37).
Fig. External circuit example advance phase
VREF
ERROR AMPLIFIER INPUT RIPPLE VOLTAGE
boost circuit charging phase compensating capacitor connected error amplifier shown Figure protect against output voltage overload power-on. offset voltage provided negative input side that boost circuit only operates power: When capacitor connected parallel with output feedback resistor, because output ripple large advanced phase compensation, boost circuit starts operating, which degrade regulation differential input voltage error amplifier exceeds careful with differential input voltage error amplifier.
Fig. Error /Boost Equivalent circuit
Advanced phase compensation capacitor
Boost circuit
Error [FB] VREF
MB3775
NOTES
Take account common impedance when designing earth line printed wiring board. Take measures against static electricity. semiconductors, antistatic conductive containers. When storing carrying printed circuit board after chip mounting, conductive container. work table, tools measuring instruments must grounded. worker must grounding device containing resistors series. apply negative voltage Applying negative voltage -0.3 less generate parasitic transistor, resulting malfunction.
ORDERING INFORMATION
Part number MB3775PF- MB3775PFV- MB3775PF-E1 MB3775PFV-E1 Package 16-pin plastic (FPT-16P-M06) 16-pin plastic SSOP (FPT-16P-M05) 16-pin plastic (FPT-16P-M06) 16-pin plastic SSOP (FPT-16P-M05) Remarks Conventional version Conventional version Lead Free version Lead Free version
RoHS Compliance Information Lead (Pb) Free version
products Fujitsu Microelectronics with "E1" compliant with RoHS Directive observed standard lead, cadmium, mercury, Hexavalent chromium, polybrominated biphenyls (PBB) polybrominated diphenyl ethers (PBDE) product that conforms this standard added "E1" part number.
MB3775
MARKING FORMAT (Lead Free version)
MB3775
XXXX
INDEX
SOP-16
Lead Free version
Lead Free version
3775
E1XXXX
INDEX
SSOP-16
MB3775
LABELING SAMPLE (Lead free version)
lead-free mark JEITA logo JEDEC logo
MB123456P
(3N) 1MB123456P-789-GE1 1000
(3N)2 1561190005 107210
PASS
1,000 MB123456P
2006/03/01
ASSEMBLED JAPAN
MB123456P
0605 Z01A 1000
1561190005
Lead Free version
MB3775
MB3775PF-E1, MB3775PFV-E1 RECOMMENDED CONDITIONS MOISTURE SENSITIVITY LEVEL
Item Mounting Method Mounting times Before opening Storage period From opening reflow When storage period after opening exceeded Storage conditions Condition (infrared reflow) Manual soldering (partial heating method) times Please within years after Manufacture. Less than days Please processes within days after baking (125 24H)
70%RH less (the lowest possible humidity)
[Temperature Profile Standard Reflow] (infrared reflow) rank
(d')
Temperature Increase gradient Preliminary heating Temperature Increase gradient Actual heating (d')
Cooling
Average °C/s °C/s Temperature 180s Average °C/s °C/s Temperature Max; more, less Temperature more, less Temperature more, less Temperature more, less Natural cooling forced cooling
Note Temperature package body Manual soldering (partial heating method) Conditions Temperature Times max/pin
MB3775
PACKAGE DIMENSION
16-pin plastic Lead pitch Package width package length Lead shape Sealing method Mounting height Weight 1.27 10.15 Gullwing Plastic mold 2.25 0.20
(FPT-16P-M06)
Code (Reference)
16-pin plastic (FPT-16P-M06)
*110.15 -0.20 .400 -.008
+0.25 +.010
Note These dimensions include resin protrusion. Note These dimensions include resin protrusion. Note Pins width pins thickness include plating thickness. Note Pins width include cutting remainder.
0.17 -0.04
+0.03 +.001
.007 -.002
INDEX
5.30±0.30
7.80±0.40 (.209±.012) (.307±.016) Details part 2.00 -0.15 .079 -.006
+0.25 +.010
(Mounting height)
0.13(.005)
0.25(.010) 0~8°
1.27(.050)
0.47±0.08 (.019±.003)
0.50±0.20 (.020±.008) 0.60±0.15 (.024±.006)
0.10 -0.05
+0.10 +.004
.004 -.002 (Stand off)
0.10(.004)
2002 FUJITSU LIMITED F16015S-c-4-7
Dimensions (inches). Note: values parentheses reference values.
(Continued)
MB3775
(Continued)
16-pin plastic SSOP
Lead pitch Package width package length Lead shape Sealing method Mounting height Weight
0.65 4.40 5.00 Gullwing Plastic mold 1.45mm 0.07g
(FPT-16P-M05)
Code (Reference)
16-pin plastic SSOP (FPT-16P-M05)
5.00±0.10(.197±.004)
Note Resin protrusion. (Each side +0.15 (.006) Max). Note These dimensions include resin protrusion. Note Pins width pins thickness include plating thickness. Note Pins width include cutting remainder.
0.17±0.03 (.007±.001)
INDEX
4.40±0.10 6.40±0.20 (.173±.004) (.252±.008)
Details part 1.25 -0.10 .049 -.004 LEAD
+0.20 +.008
(Mounting height)
0.65(.026)
0.24±0.08 (.009±.003) 0.13(.005)
0~8° 0.10±0.10 (Stand off) (.004±.004) 0.25(.010)
0.10(.004)
0.50±0.20 (.020±.008) 0.60±0.15 (.024±.006)
2003 FUJITSU LIMITED F16013S-c-4-6
Dimensions (inches). Note: values parentheses reference values.
MB3775
MEMO
MB3775
MEMO
FUJITSU MICROELECTRONICS LIMITED
Shinjuku Dai-Ichi Seimei Bldg. 7-1, Nishishinjuku 2-chome, Shinjuku-ku, Tokyo 163-0722, Japan Tel: +81-3-5322-3347 Fax: +81-3-5322-3387 http://jp.fujitsu.com/fml/en/ further information please contact: North South America FUJITSU MICROELECTRONICS AMERICA, INC. 1250 Arques Avenue, Sunnyvale, 94085-5401, U.S.A. Tel: +1-408-737-5600 Fax: +1-408-737-5999 http://www.fma.fujitsu.com/ Europe FUJITSU MICROELECTRONICS EUROPE GmbH Pittlerstrasse 63225 Langen, Germany Tel: +49-6103-690-0 Fax: +49-6103-690-122 Korea FUJITSU MICROELECTRONICS KOREA LTD. KOSMO TOWER, 1002 Daechi-Dong, Kangnam-Gu,Seoul 135-280 Korea Tel: +82-2-3484-7100 Fax: +82-2-3484-7111 http://www.fmk.fujitsu.com/ Asia Pacific FUJITSU MICROELECTRONICS ASIA LTD. Lorong Chuan, #05-08 Tech Park, Singapore 556741 Tel: +65-6281-0770 Fax: +65-6281-0220 FUJITSU MICROELECTRONICS SHANGHAI CO., LTD. Rm.3102, Bund Center, No.222 Road(E), Shanghai 200002, China Tel: +86-21-6335-1560 Fax: +86-21-6335-1605 http://cn.fujitsu.com/fmc/ FUJITSU MICROELECTRONICS PACIFIC ASIA LTD. 10/F., World Commerce Centre, Canton Road Tsimshatsui, Kowloon Hong Kong Tel: +852-2377-0226 Fax: +852-2376-3269 http://cn.fujitsu.com/fmc/tw
Rights Reserved. contents this document subject change without notice. Customers advised consult with sales representatives before ordering. information, such descriptions function application circuit examples, this document presented solely purpose reference show examples operations uses FUJITSU MICROELECTRONICS device; FUJITSU MICROELECTRONICS does warrant proper operation device with respect based such information. When develop equipment incorporating device based such information, must assume responsibility arising such information. FUJITSU MICROELECTRONICS assumes liability damages whatsoever arising information. information this document, including descriptions function schematic diagrams, shall construed license exercise intellectual property right, such patent right copyright, other right FUJITSU MICROELECTRONICS third party does FUJITSU MICROELECTRONICS warrant non-infringement third-party's intellectual property right other right using such information. FUJITSU MICROELECTRONICS assumes liability infringement intellectual property rights other rights third parties which would result from information contained herein. products described this document designed, developed manufactured contemplated general use, including without limitation, ordinary industrial use, general office use, personal use, household use, designed, developed manufactured contemplated accompanying fatal risks dangers that, unless extremely high safety secured, could have serious effect public, could lead directly death, personal injury, severe physical damage other loss (i.e., nuclear reaction control nuclear facility, aircraft flight control, traffic control, mass transport control, medical life support system, missile launch control weapon system), requiring extremely high reliability (i.e., submersible repeater artificial satellite). Please note that FUJITSU MICROELECTRONICS will liable against and/or third party claims damages arising connection with above-mentioned uses products. semiconductor devices have inherent chance failure. must protect against injury, damage loss from such failures incorporating safety design measures into your facility equipment such redundancy, fire protection, prevention over-current levels other abnormal operating conditions. Exportation/release products described this document require necessary procedures accordance with regulations Foreign Exchange Foreign Trade Control Japan and/or export control laws. company names brand names herein trademarks registered trademarks their respective owners.
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BIPOLAR SWITCHING REGULATOR CONTROLLER MB3775 VOLTAGE D

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