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What is MB39A136?

This electronic component, produced by the manufacturer "Fujitsu", performs the same function as "2ch PFM/PWM DC/DC converter IC".


MB39A136 Datasheet PDF - Fujitsu

Part Number MB39A136
Description 2ch PFM/PWM DC/DC converter IC
Manufacturers Fujitsu 
Logo Fujitsu Logo 


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FUJITSU MICROELECTRONICS
DATA SHEET
DS04-27262-2E
ASSP for Power Management Applications
(General-Purpose DC/DC Converter)
2ch PFM/PWM DC/DC converter IC
with synchronous rectification
MB39A136
DESCRIPTION
MB39A136 is 2ch step-down DC/DC converter IC of the current mode N-ch/N-ch synchronous rectification meth-
od. It contains the enhanced protection features, and supports the symmetrical-phase method and the ceramic
capacitor. MB39A136 realizes rapid response, high efficiency, and low ripple voltage, and its high-frequency
operation enables the miniaturization of inductors and I/O capacitors.
FEATURES
• High efficiency
• For frequency setting by external resistor : 100 kHz to 1 MHz
• Error Amp threshold voltage
: 0.7 V ± 1.0%
• Minimum output voltage value
: 0.7 V
• Wide range of power-supply voltage
: 4.5 V to 25 V
• PFM/PWM auto switching mode and fixed PWM mode selectable
• Supports Symmetrical-Phase method
• With built-in over voltage protection function
• With built-in under voltage protection function
• With built-in over current protection function
• With built-in over-temperature protection function
• With built-in soft start/stop circuit without load dependence
• With built-in synchronous rectification type output steps for N-ch MOS FET
• Standby current
: 0 [µA] Typ
• Small package
: TSSOP-24
APPLICATION
• Digital TV
• Photocopiers
• Surveillance cameras
• Set-top boxes (STB)
• DVD players, DVD recorders
• Projectors
• IP phones
• Vending machine
• Consoles and other non-portable devices
Copyright©2008 FUJITSU MICROELECTRONICS LIMITED All rights reserved
2008.12

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MB39A136 equivalent
MB39A136
ABSOLUTE MAXIMUM RATINGS
Parameter
Symbol
Conditions
Rating
Min Max
Unit
Power-supply voltage
CB pin input voltage
LX pin input voltage
Voltage between CB and LX
Control input voltage
Input voltage
Output current
VVCC
VCB
VLX
VCBLX
VI
VFB
VILIM
VCSx
VMODE
IOUT
VCC pin
CB1, CB2 pins
LX1, LX2 pins
CTL1, CTL2 pins
FB1, FB2 pins
ILIM1, ILIM2 pins
CS1, CS2 pins
MODE pin
DC DRVL1, DRVL2 pins,
DRVH1, DRVH2 pins
27 V
32 V
27 V
7V
27 V
VVREF + 0.3
V
VVREF + 0.3
V
VVREF + 0.3
V
VVB + 0.3
V
60 mA
Power dissipation
Storage temperature
PD
TSTG
Ta ≤ + 25 °C
55
1644
+ 150
mW
°C
WARNING: Semiconductor devices can be permanently damaged by application of stress (voltage, current,
temperature, etc.) in excess of absolute maximum ratings. Do not exceed these ratings.
DS04-27262-2E
5


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