ASSP Power Supply Applications BIPOLAR Switching Regulator C

The Datasheet Archive - 100 Million Datasheets from 7500 Manufacturers.

ASSP Power Supply Applications BIPOLAR Switching Regulator C

Datasheet Thumbnail

Top Searches for this datasheet

DS04-27212-4Ea
ASSP Power Supply Applications
BIPOLAR
Switching Regulator Controller
(Low Voltage)
MB3800
DESCRIPTION
MB3800 single-channel switching regulator control voltage applications incorporating soft start function short circuit detection function. device minimum operating voltage ideal power supply battery-operated electronic equipment.
FEATURES
Wide supply voltage operating range: current consumption: Typically operation, less stand-by High speed operation possible: Maximum error amplifier gain inside peripheral components minimized. Incorporates soft start circuit. Incorporates timer-latch type short circuit detection circuit (SCP). Totem-pole type output with adjustable on/off current (for transistors) Incorporates stand-by function. Three types packages (SOP-8 types, SSOP-8 type)
Application
monitor/panel Power supply module Portable apparatus etc.
Copyright©1994-2008 FUJITSU MICROELECTRONICS LIMITED rights reserved 2006.5
MB3800
ASSIGNMENT
(TOP VIEW)
BR/CTL
(FPT-8P-M01) (FPT-8P-M02) (FPT-8P-M03)
DESCRIPTION
Symbol BR/CTL Description Error amplifier inverting input Soft start setting capacitor connection Power supply Output current setting control Totem-pole type output Ground Capacitor resistor connection setting oscillation frequency Error amplifier output
MB3800
BLOCK DIAGRAM
Reference voltage supply
Sawtooth wave oscillator
1.25
Error
Comp.
Output drive control circuit
Soft start
BR/CTL
MB3800
ABSOLUTE MAXIMUM RATINGS
Parameter Power supply voltage Output source current Output sink current Symbol
Condition
Rating 570* 430* 580* +125
Unit
FPT-8P-M01, +25°C
Tstg FPT-8P-M02, +25°C SSOP-8, +25°C
Allowable dissipation Storage temperature
When mounted square double-sided epoxy board. WARNING: Semiconductor devices permanently damaged application stress (voltage, current, temperature, etc.) excess absolute maximum ratings. exceed these ratings.
RECOMMENDED OPERATING CONDITIONS
+25°C) Parameter Power supply voltage Error amplifier input voltage BR/CTL input voltage Output source current Output sink current capacitance Phase compensation capacitance Output current setting resistance Timing resistance Timing capacitance Oscillation frequency Operating Ambient temperature Symbol fOSC Value -0.2 -0.2 +1.0 5000 10.0 10000 1000 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.
MB3800
ELECTRICAL CHARACTERISTICS
(VCC Value Unit Threshold voltage Charging current Soft start Short circuit detection (S.C.P.) Voltage soft start completion Charging current Threshold voltage Oscillation frequency Sawtooth wave oscillator (OSC) Frequency input stability Frequency variation with temperature Input threshold voltage input stability variation with temperature Input bias current Error amplifier Voltage gain Frequency bandwidth Maximum output voltage range Output source current Output sink current Idle period adjustment section Maximum duty cycle ICPC VtPC fOCS VTdV VTdT VOM+ VOM-
Parameter Circuit prevent malfunction input voltage (U.V.L.O.) Reset voltage
Symbol
Condition
-1.0 -1.0 -0.2 0.87 0.05
-0.7 -0.7 +1.0
VSCP VSCP -30°C +85°C -30°C +85°C -1.5 -1.5 -1.0 0.78
IOM- tDUTY
0.45
(Continued)
MB3800
(Continued) Parameter Symbol VOH1 VOH2 Output voltage Output section Output source current Output sink current Pull down resistance voltage Output current setting section/ Control section Input condition Input condition current range Stand-by current Entire device Average supply current VOL1 VOL2 IOFF ICCS BR/CTL open Condition Value -1.8 -0.1 Unit
DIAGRAM
voltage Reference input short circuit detection comparator Idle period setting voltage Sawtooth wave output Soft start setting voltage
waveforms
waveforms Output short circuit Output short circuit
Soft start Power supply control
Short circuit detection
MB3800
TIME CONSTANT SOFT START SHORT CIRCUIT DETECTION
Soft Start
power capacitor connected (pin starts charging. comparator compares soft start setting voltage proportion voltage with sawtooth waveform. comparison controls duty (pin causing soft start operation. completion soft start operation, voltage stays low, soft start setting voltage stays high, circuit enters output short circuit detection wait state. Soft start time (The time until output duty reaches approximately 50%) 0.35 [µF]
Short Circuit Protection
switching regulator output suddenly drops load effect, error amplifier output (pin fixed VOM+ capacitor starts charging. When voltage reaches approximately (pin (pin stays low. Once protection circuit operates, circuit restored resetting power supply. Short circuit detection time [µF]
MB3800
TYPICAL CHARACTERISTICS
Average supply current Supply voltage +25°C Input threshold voltage Input threshold voltage Supply voltage +25°C
Average supply current (mA)
Supply voltage
Supply voltage
Input threshold voltage variation ratio
Input threshold voltage variation ratio Operating ambient temperature
Input threshold voltage Supply voltage Input threshold voltage +25°C
+100
Supply voltage
Operating ambient temperature (°C)
High level output level output voltage (mV) High level output voltage +25°C
level output +25°C
High level output current IOUT (mA)
level output current IOUT (mA)
(Continued)
MB3800
Output source current BR/CTL input current +25°C BR/CTL input voltage (mV)
BR/CTL input voltage BR/CTL input current
Output source current IOUT (mA)
+25°C
-0.4
-0.8
-1.2
-1.6
-2.0
-0.4
-0.8
-1.2
-1.6
-2.0
BR/CTL input current (mA)
BR/CTL input current (mA) Oscillation frequency vs.Timing resistor
Average supply current BR/CTL input current Average supply current (mA) Oscillation frequency (Hz) +25°C 10000 1000
+25°C
-100
BR/CTL input current (µA)
Timing resistor
Frequency variation ratio Supply voltage Frequency variation ratio Frequency variation ratio +25°C
Frequency variation ratio Operating ambient temperature
+100
Supply voltage
Operating ambient temperature (°C)
(Continued)
MB3800
(Continued)
Maximum duty cycle Oscillation frequency +25°C
Maximum duty cycle DUTY
Oscillation frequency (Hz)
Output voltage current waveforms (reference data)
(mA) t(µs)
Note: delay time depends characteristics external transistor.
Measurement circuit diagram
MB3800
MB3800
FUNCTIONAL DESCRIPTION
Switching Regulator Function
Reference voltage circuit reference voltage circuit generates temperature-compensated reference voltage (1.25V) from voltage supplied from (pin addition providing reference voltage switching regulator, circuit also sets idle period. Sawtooth wave oscillator sawtooth oscillator generates sawtooth wave MHz) that stable with respect supply voltage temperature. capacitor resistor that oscillation frequency connected (pin Error amplifier (Error Amp) error amplifier detects output voltage switching regulator outputs control signal. voltage gain fixed, connecting phase compensation capacitor (pin provides stable phase compensation system. comparator (PWM Comp.) voltage comparator inverting three non-inverting inputs. comparator voltage/pulse width converter that controls time output pulse depending input voltage. output level high when sawtooth wave lower than error amplifier output voltage, soft start setting voltage, idle period setting voltage. Output circuit output circuit totem pole type configuration drive external transistor directly. value ON/OFF current resistor connected BR/CTL (pin
Power Supply Control Function
Stand-by mode (supply current less) connecting BR/CTL (pin making open circuit. Mode Stand-by mode Operating mode
MB3800
BR/CTL
MB3800
Other Functions
Soft start short circuit detection Soft start operation connecting capacitor (pin Soft start prevents current spike start-up. completion soft start operation, (pin stays enters short circuit detection wait state. When output short circuit occurs, error amplifier output fixed VOM+ capacitor starts charging. After charging approximately (pin (pin stays low. Once protection circuit operates, circuit restored resetting power supply. (See TIME CONSTANT SOFT START SHORT CIRCUIT DETECTION".) Circuit prevent malfunction input voltage Transients when powering instantaneous glitches supply voltage lead malfunction control cause system damage failure. circuit prevent malfunction input voltage detects input voltage comparing supply voltage internal reference voltage. detection, circuit fixes (pin low. system recovers when supply voltage rises back above threshold voltage malfunction prevention circuit.
APPLICATION EXAMPLE
MB3800
BR/CTL
MB3800
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 MB3800PF- MB3800PNF- MB3800PFV- MB3800PF-E1 MB3800PNF-E1 MB3800PFV-E1 Package 8-pin Plastic (FPT-8P-M01) 8-pin Plastic (FPT-8P-M02) 8-pin Plastic SSOP (FPT-8P-M03) 8-pin Plastic (FPT-8P-M01) 8-pin Plastic (FPT-8P-M02) 8-pin Plastic SSOP (FPT-8P-M03) Remarks Conventional version Conventional version Conventional version Lead Free 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.
MB3800
MARKING FORMAT (Lead Free version)
Lead Free version
3800
E1XXXX
INDEX
SOP-8 (FPT-8P-M01)
3800
Lead Free version
XXXX
SOP-8 (FPT-8P-M02)
Lead Free version
3800
INDEX
SSOP-8 (FPT-8P-M03)
MB3800
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
MB3800
MB3800PF-E1, MB3800PNF-E1, MB3800PFV-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
MB3800
PACKAGE DIMENSIONS
8-pin plastic Lead pitch Package width package length Lead shape Sealing method Mounting height Weight 1.27 6.35 Gullwing Plastic mold 2.25 0.10
(FPT-8P-M01)
Code (Reference)
8-pin plastic (FPT-8P-M01)
6.35 -0.20 .250 -.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 .007 -.002
+0.03 +.001
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 F08002S-c-6-7
Dimensions (inches). Note: values parentheses reference values.
(Continued)
MB3800
8-pin plastic
Lead pitch Package width package length Lead shape Sealing method Mounting height Weight
1.27 5.05 Gullwing Plastic mold 1.75 0.06
(FPT-8P-M02)
8-pin plastic (FPT-8P-M02)
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.
+.010
5.05 -0.20 .199 -.008
+0.25
0.22 -0.07 .009 -.003
+0.03 +.001
3.90±0.30 6.00±0.40 (.154±.012) (.236±.016)
Details part 1.55±0.20 (Mounting height) (.061±.008) 0.25(.010)
0.40(.016)
0~8°
1.27(.050)
0.44±0.08 (.017±.003)
0.13(.005)
0.50±0.20 (.020±.008) 0.60±0.15 (.024±.006)
0.15±0.10 (.006±.004) (Stand off)
0.10(.004)
2002 FUJITSU LIMITED F08004S-c-4-7
Dimensions (inches). Note: values parentheses reference values.
(Continued)
MB3800
(Continued)
8-pin plastic SSOP
Lead pitch Package width package length Lead shape Sealing method Mounting height Weight
0.80 Gullwing Plastic mold 1.45 0.04
(FPT-8P-M03)
Code (Reference)
8-pin plastic SSOP (FPT-8P-M03)
3.50±0.10(.138±.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 -0.04 .007 -.002
+0.03 +.001
4.20±0.10
INDEX
6.20±0.20 (.165±.004) (.244±.008) Details part 1.25 -0.10 .049 -.004
+0.20 +.008
(Mounting height)
0.25(.010)
0~8°
0.80(.031)
0.37±0.08 (.015±.003)
0.10(.004)
0.50±0.20 (.020±.008) 0.60±0.15 (.024±.006)
0.10±0.10 (.004±.004) (Stand off)
0.10(.004)
2002 FUJITSU LIMITED F08005S-c-3-5
Dimensions (inches). Note: values parentheses reference values.
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.
Edited Strategic Business Development Dept.

ASSP Power Supply Applications BIPOLAR Switching Regulator C

Top Searches for this datasheet

Other recent searches