MB3870 반도체 회로 부품 판매점
Pentium II DC/DC Converter IC
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 Fujitsu Media Devices |
FUJITSU SEMICONDUCTOR
DATA SHEET
DS04-27218-4E
ASSP For Power Supply Applications
Pentium® II DC/DC Converter IC
MB3870
s DESCRIPTION
The FUJITSU MB3870 is a pulse width modulation (PWM) DC/DC converter IC chip that provides a selection of
1.3 V to 3.5 V output voltages for Pentium®* CPU’s, using a 5-bit input signal information.
The MB3870 utilizes synchronous rectification for high efficiency and features a soft-start/discharge control
function for ease in designing power supplies in multi-supply systems, making it ideal for Pentium® II power supply
systems.
* : Pentium is the registered trademark of Intel Corporation.
s FEATURES
• Highly efficient for using synchronous rectification scheme
• On-chip soft-start/discharge control circuit
• High precision output voltage: ±1.2%
• 5-bit, 32-step DAC: 3.5 V to 2.1 V in 100 mV steps
2.05 V to 1.3 V in 50 mV steps
• Frequency range: 100 kHz to 500 kHz using variable resistance (on-chip frequency setting capacitance)
• Standby current: 0 µA TYP
• On-chip PWRGOOD circuit for output voltage state detection
• Timer-latch short-circuit protection circuit, and overvoltage protection circuit for output protection
s PACKAGE
24-pin Plastic SSOP
(FPT-24P-M03)
MB3870
s PIN ASSIGNMENT
RT : 1
RS : 2
SGND : 3
CS : 4
–IN : 5
FB : 6
ENB : 7
OUT1 : 8
VS : 9
CB : 10
OUT2 : 11
PGND : 12
(Top view)
(FPT-24P-M03)
24 : VREF
23 : VCC
22 : CSCP
21 : PWRGOOD
20 : VSENSE
19 : CTL
18 : VD4
17 : VD3
16 : VD2
15 : VD1
14 : VD0
13 : VB
2
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제조업체: Fujitsu Media Devices
( fujitsu )
MB3870 converter
데이터시트 다운로드 :
[ MB3870.PDF ]
[ MB3870 다른 제조사 검색 ]
국내 전력반도체 판매점
상호 : 아이지 인터내셔날
전화번호 : 051-319-2877
[ 홈페이지 ]
IGBT, TR 모듈, SCR, 다이오드모듈, 각종 전력 휴즈
( IYXS, Powerex, Toshiba, Fuji, Bussmann, Eaton )
전력반도체 문의 : 010-3582-2743
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