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MB3827

Fujitsu Media Devices
Part Number MB3827
Manufacturer Fujitsu Media Devices
Description 6-ch DC/DC Converter
Published Sep 11, 2005
Detailed Description FUJITSU SEMICONDUCTOR DATA SHEET DS04-27222-1E ASSP For Power Supply Applications 6-ch DC/DC Converter IC With Synch...
Datasheet PDF File MB3827 PDF File

MB3827
MB3827

Overview
FUJITSU SEMICONDUCTOR DATA SHEET DS04-27222-1E ASSP For Power Supply Applications 6-ch DC/DC Converter IC With Synchronous Rectification for voltage step-up and step-down MB3827 s DESCRIPTION The MB3827 is a pulse width modulation (PWM) type 6-channel DC/DC converter IC with, synchronous rectification for voltage step-up and step-down.
The MB3827 is ideal for low voltage, high efficiency, compact applications and for down conversion and up/down conversion (with two types of voltage step-up/step-down methods allowing input/output relations to be set independently).
In addition the MB3827 features a built-in self-supply power channel (channel 7) providing a wide range of supply voltages, and operates from two dry-cell batteries.
This product is ideal for high performance portable devices such as digital still cameras.
s FEATURES • • • • • • • • Compatible with step-up/step-down switching methods (channel 1) Compatible with step-up/step-down Zeta methods (channels 2 to 6) Synchronous rectification (channels 1 and 2) Low start-up voltage : 1.
8 V (channel 7 for self-power supply) Power supply voltage range : 4 V to 13 V (channels 1 to 6) Built-in high-precision reference voltage generator : 2.
5 V±1% Oscillator frequency range : 100 kHz to 800 kHz Error amplifier output for soft start (channels 1 to 6) s PACKAGE 64-pin plastic LQFP (FPT-64P-M03) 2 XENB1-6 -IN7-2 -IN7-1 MB3827 GND(O)5,6,7 OUT(A)6 -IN(C)6 -IN(A)6 OUT7 s PIN ASSIGNMENT DTC5 +IN7 RB7 -IN6 FB6 FB7 9 8 7 6 5 4 3 2 1 16 15 14 13 12 11 10 VCC(O)5,6,7 OUT6 OUT5 62 61 60 59 58 57 56 55 54 53 52 51 50 49 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 OUT4 OUT3 VSS(O)3,4,5,6 VCC(O)3,4 OUT2-2 GND(O)2,3,4 OUT2-1 VSS(O)1,2 VCC(O)1,2 OUT1-1 VG(O)1 OUT1-2 OUT1-3 DTC6 DTC7 -IN(C)5 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 63 64 -IN5 FB5 FB4 -IN4 DTC4 -IN(C)8 VREF GND VCC CTL1-4,7 CTL5 CTL6 CS1-6 CSCP VB RT CT FB3 FB2 FB1 -IN3 -IN2 -IN1 RB1 DTC3 DTC2 DTC1-4 DTC1-3 DTC1-1 OUT1-4 GN...


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