Power Supply Applications Switching Regulator Controller MB3
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DS04-27201-3E
Power Supply Applications
Switching Regulator Controller
MB3776A
DESCRIPTION
MB3776A system switching regulator controller. Because operating supply voltage powerdown, MB3776A ideal DC/DC converters battery-powered portable equipment.
FEATURES
Wide supply voltage range: Wide oscillation frequency range, high-frequency oscillation: kHz) Push-pull output. Drive current with external resistor Bulit-in idle period circuit Internally error amplifier gain, external components Bulit-in power-down function
PACKAGES
8-pin Plastic 8-pin Plastic 8-pin Plastic 8-pin Plastic SSOP
(DIP-8P-M01)
(FPT-8P-M01)
(FPT-8P-M02)
(FPT-8P-M03)
MB3776A
ASSIGNMENT
(TOP VIEW)
(DIP-8P-M01) (FPT-8P-M01) (FPT-8P-M02) (FPT-8P-M03)
MB3776A
BLOCK DIAGRAM
Reference voltage 1.25 Internal bias reference voltage Error Amp.
Saw-tooth waveform Comp
Output drive control
MB3776A
ABSOLUTE MAXIMUM RATINGS
+25°C) Parameter Power supply voltage Error amp. input voltage Output source current Output sink current Symbol ISOURCE ISINK Condition +25°C (DIP) Power dissipation +25°C (SOP) EIAJ JEDEC Rating Min. -0.3 Max. *570 *430 *580 +125 Unit
+25°C (SSOP) Operating temperature Storage temperature Tstg
packages mounted epoxy board 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 amp. input voltage Output source current Output sink current Phase compensation capacitor Timing capacitor Timing resistor Oscillator frequency Operating temperature Symbol ISOURCE ISINK fOSC Value Min. -0.2 Typ. 1000 Max. 10000 Unit
WARNING: Recommended operating conditions normal operating ranges semiconductor device. device's electrical characteristics warranted when operated within these ranges. Always semiconductor devices within recommended operating conditions. 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 FUJITSU representative beforehand.
MB3776A
ELECTRICAL CHARACTERISTICS
Reference Section Error Amp. Section
+25°C, Parameter Input threshold voltage input stability temp. stability Input bias current Voltage gain Frequency band width Symbol VTdV1 VTdV2 VTdT Condition Min. -30°C +75°C -1.0 Value Typ. Max. -0.2 Unit
Saw-tooth Waveform Oscillator Section
+25°C, Parameter Oscillator frequency Frequency input stability Frequency temp. stability Symbol fOSC Condition 1000 -30°C +75°C Value Min. Typ. Max. Unit
Under Lockout Protection
+25°C, Parameter Threshold voltage Symbol Condition Value Min. Typ. Max. Unit
Dead-time Control Section
+25°C, Parameter Symbol Condition 1000 3.0k Value Min. Typ. Max. Unit
Max. duty cycle
tDUTY
MB3776A
Output Section
+25°C, Parameter Output source current Output sink current High-level output voltage Output voltage Symbol ISOURCE ISINK Condition VCTL VCC, Value Min. Typ. Max. Unit
Control Section
+25°C, Parameter Input condition Input condition Control terminal current Symbol IOFF ICTL Condition VCTL Value Min. -300 -1.3 Typ. Max. -700 Unit
Device
+25°C, Parameter Stand current Average supply current Symbol ICCS Condition VCTL terminal open ICTL -700 Value Min. Typ. Max. Unit
MB3776A
MEASURMENT CIRCUIT
MB3776A TEST INPUT ISOURCE
OUTPUT
1000 =820 ISOURCE 25000/RB (mA)
MB3776A
DIAGRAM
Terminal Waveform Saw-tooth Waveform Output
Output Terminal Waveform
Input Current ICTL
Power Supply Voltage
MB3776A
TYPICAL CHARACTERISTIC
Output bias current Output source current
+25°C
Output bias current Output bias voltage
+25°C
Output source current ISOURCE (mA)
Output bias voltage
-100 -200 -300 -400 -500 -600 -700 Output bias current
-100 -200 -300 -400 -500 -600 -700 Output bias current
Level output
+25°C
Level output
+25°C
Level output voltage (mV)
Level output voltage
Level output current (mA)
Level output current (mA)
Ambient temp. Oscillator frequency
1000
Timing resistor Oscillator frequency
+25°C
Oscillator frequency fOSC (kHz)
Oscillator frequency fOSC (Hz)
1000 10000
Ambient temp. (°C)
Timing resistor
(Continued)
MB3776A
(Continued)
Control terminal voltage Control terminal current
-1.0 +25°C -1.0 Control terminal current ICTL (mA) +25°C
Control terminal voltage Control terminal current
Control terminal current ICTL (mA)
-0.5
-0.5
Control terminal voltage VCTL
Control terminal voltage VCTL
Power supply voltage Input voltage
+25°C Inpurt current VCTL
Power supply voltage
MB3776A
APPLICATION EXAMPLE
1000
Synchronization
synchronize MB3776A controllers, terminal each shared same specified capacitor resistor used signal application connected self-excitation oscillation. terminal controls power on/off each
MB3776A
MB3776A
MB3776A
MB3776A
ORDERING INFORMATION
Part number MB3776A-P MB3776APF MB3776APNF MB3776APFV Package 8-pin Plastic (DIP-8P-M01) 8-pin Plastic (FPT-8P-M01) 8-pin Plastic (FPT-8P-M02) 8-pin Plastic SSOP (FPT-8P-M03) Remarks
MB3776A
PACKAGE DIMENSIONS
8-pin Plastic (DIP-8P-M01)
9.40 -0.30
+0.40 +.016
.370 -.012
INDEX
6.20±0.25 (.244±.010)
4.36(.172)MAX
0.51(.020)MIN 0.25±0.05 (.010±.002)
3.00(.118)MIN
0.46±0.08 (.018±.003)
+0.30 +.012
0.99
+0.30 +.012
1.52
.039 +0.35 0.89 -0.30
.035 -.012
+.014
.060 2.54(.100)
7.62(.300)
15°MAX
1994 FUJITSU LIMITED D08006S-2C-3
Dimensions (inches).
(Continued)
MB3776A
(Continued)
8-pin Plastic (FPT-8P-M01)
2.25(.089)MAX 6.35 -0.20 .250 -.008
+0.25 +.010
0.05(.002)MIN (STAND OFF)
INDEX
5.30±0.30 (.209±.012)
7.80±0.40 (.307±.016)
6.80 -0.20 +.016 .268 -.008
+0.40
1.27(.050) 3.81(.150)REF
0.45±0.10 (.018±.004)
0.15 -0.02 +.002 .006 -.001
+0.05
0.50±0.20 (.020±.008)
Details part 0.20(.008)
0.50(.020) 0.10(.004) 0.18(.007)MAX 0.68(.027)MAX
1994 FUJITSU LIMITED F08002S-4C-4
Dimensions (inches).
(Continued)
MB3776A
(Continued)
8-pin Plastic (FPT-8P-M02)
5.05 -0.20 .199 -.008
+0.25
+.010
1.55±0.20(.061±.008)
0.15±0.10 (STAND OFF) (.006±.004) 3.90±0.30 (.154±.012) 6.00±0.40 (.236±.016) 5.00±0.30 (.197±.012)
0.40(.016) 1.27(.050)TYP 0.42±0.10 (.017±.004)
0.20±0.05 (.008±.002) Details part
0.50±.020 (.020±.008)
0.40(.016)
3.81(.150)REF
0.10(.004)
0.20(.008) 0.18(.007)MAX 0.65(.026)MAX
1994 FUJITSU LIMITED F08004S-2C-4
Dimensions (inches).
(Continued)
MB3776A
(Continued)
8-pin Plastic SSOP (FPT-8P-M03)
This dimension does include resin protrusion.
3.50±0.10
(.138±.004)
1.25 -0.10 +.008 .049 -.004
+0.20
0.10(.004)
INDEX
4.20±0.10 (.165±.004)
5.20(.205)
6.20±0.20 (.244±.008)
0.80(.0315)
0.35±0.10 (.014±.004)
0.10(.004)
0.15 -0.02 +.002 .006 -.001
+0.05
Details part 0.10±0.10(.004±.004) (STAND OFF)
2.40(.094)REF
0.50±0.20 (.020±.008)
1994 FUJITSU LIMITED F08005S-1C-2
Dimensions (inches).
MB3776A
FUJITSU LIMITED
further information please contact:
Japan FUJITSU LIMITED Corporate Global Business Support Division Electronic Devices KAWASAKI PLANT, 4-1-1, Kamikodanaka Nakahara-ku, Kawasaki-shi Kanagawa 211-8588, Japan Tel: (044) 754-3763 Fax: (044) 754-3329
Rights Reserved. contents this document subject change without notice. Customers advised consult with FUJITSU sales representatives before ordering. information circuit diagrams this document presented examples semiconductor device applications, intended incorporated devices actual use. Also, FUJITSU unable assume responsibility infringement patent rights other rights third parties arising from this information circuit diagrams. FUJITSU semiconductor devices intended standard applications (computers, office automation other office equipment, industrial, communications, measurement equipment, personal household devices, etc.). CAUTION: Customers considering products special applications where failure abnormal operation directly affect human lives cause physical injury property damage, where extremely high levels reliability demanded (such aerospace systems, atomic energy controls, floor repeaters, vehicle operating controls, medical devices life support, etc.) requested consult with FUJITSU sales representatives before such use. company will responsible damages arising from such without prior approval. semiconductor devices have inherently certain rate 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. products described this document represent goods technologies subject certain restrictions export under Foreign Exchange Foreign Trade Control Japan, prior authorization Japanese government should required export those products from Japan.
http://www.fujitsu.co.jp/
North South America FUJITSU MICROELECTRONICS, INC. Semiconductor Division 3545 North First Street Jose, 95134-1804, Tel: (408) 922-9000 Fax: (408) 922-9179 Customer Response Center Mon. Fri.: (PST) Tel: (800) 866-8608 Fax: (408) 922-9179
http://www.fujitsumicro.com/
Europe FUJITSU MIKROELEKTRONIK GmbH Siebenstein 6-10 D-63303 Dreieich-Buchschlag Germany Tel: (06103) 690-0 Fax: (06103) 690-122
http://www.fujitsu-ede.com/
Asia Pacific FUJITSU MICROELECTRONICS ASIA #05-08, Lorong Chuan Tech Park Singapore 556741 Tel: (65) 281-0770 Fax: (65) 281-0220
http://www.fmap.com.sg/
F9802 FUJITSU LIMITED Printed Japan
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