MB3782 반도체 회로 부품 판매점
Switching Regulator Controller
|
|
 Fujitsu Media Devices |
www.DataSheet4U.com
FUJITSU SEMICONDUCTOR
DATA SHEET
DS04-27205-4E
ASSP Power Supplies
BIPOLAR
Switching Regulator Controller
MB3782
s DESCRIPTION
The FUJITSU MB3782 is a PWM-type switching regulator controller, designed with open-collector output for
connection to external drive transistors and coils, providing a selection of three types of output voltage: step-
up, step-down or inverting (inverting output is available on one circuit only).
The MB3782 features identical oscillator output waveforms to enable completely synchronous operation and
prevent the occurrence of low-frequency beat between channels.
Also, the MB3782 features low power dissipation (2.1 mA typ) and a built-in standby mode (10 µA), making
possible the configuration of a wide variety ofDhaigtahS-ehfefiecite4nUc.yc,osmtable power supplies, even with the use of battery
power. The MB3782 is an ideal power supply for high-performance portable devices such as video camcorders
and cameras.
DataShee
s FEATURES
• Wide voltage range (3.6 to 18 V)
• Low power dissipation (operating mode: 2.1 mA (typ), standby mode: 10 µA (max)
• Wide range of oscillator frequencies, high-frequency capability (1 to 500 kHz)
• On-chip timer-latch type short detection circuit
• On-chip undervoltage lockout circuit
• On-chip 2.50 V reference voltage circuit (1.25 V output available at RT pin)
• Dead time adjustment over full duty cycle range
• On-chip standby mode (power on/off function)
s PACKAGE
(Continued)
Plastic DIP, 20 pin
Plastic SOP, 20 pin
DataSheet4U.com
DataSheet4 U .com
(DIP-20P-M01)
(FPT-20P-M01)
www.DataSheet4U.com
MB3782
s PIN ASSIGNMENT
et4U.com
TOP VIEW
VREF
CT
RT
+ IN1
– IN1
FB1
DTC1
PUT1
GND
OUT2
1
2
3
4
5
6
7
8
9
10
20 VCC
19 CTL
18 – IN3
17 FB3
16 DTC3
15 OUT3
14 SCP
13 – IN2
12 FB2
11 DTC2
(DIP-20P-M01)
(FPT-20P-M01)
DataSheet4U.com
DataShee
s PIN DESCRIPTION
Pin No.
Pin Name
1 VREF
2 CT
3 RT
4 +IN1
5 –IN1
6 FB1
7
DataSheet4U.com
2
DataSheet4 U .com
DTC1*1
I/O Description
2.50 V (typ) voltage output: provides load current up to 3 mA,
O for use as error amplifier reference input and for dead time
setting.
—
Oscillator timing capacity connection: should be used in the
capacity range 150 to 15000 pF.
Oscillator timing resistor connection: should be used in the
—
resistance range 5.1 to 100 kΩ. This pin can also provide
output at voltage level VREF/2, for use as error amplifier
reference input.
I Error amplifier 1 non-inverting input pin.
I Error amplifier 1 inverting input pin.
Error amplifier 1 output pin: connect resistor and capacitor
O between this pin and the –IN1 pin to set gain and adjust
frequency characteristics.
OUT1 dead time setting pin: VREF voltage is divided by an
I
external resistor and applied to set dead time. Also, a capacitor
may be connected between this pin and the GND pin to
perform soft start operations.
(Continued)
|
PDF 파일 내의 페이지 : 총 28 페이지
제조업체: Fujitsu Media Devices
( fujitsu )
MB3782 controller
데이터시트 다운로드 :
[ MB3782.PDF ]
[ MB3782 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
관련 데이터시트
MB3780A
Battery Backup IC - Fujitsu
MB3782
Switching Regulator Controller - Fujitsu Media Devices
MB3785A
Switching Regulator Controller - Fujitsu Media Devices
MB3788
SWITCHING REGULATOR CONTROLLER - Fujitsu Media Devices
MB3789
Switching Regulator Controller - Fujitsu Media Devices