参数资料
型号: IRU3137CSTRPBF
厂商: International Rectifier
文件页数: 1/19页
文件大小: 0K
描述: IC REG CTRLR BUCK PWM VM 8-SOIC
标准包装: 2,500
PWM 型: 电压模式
输出数: 1
频率 - 最大: 240kHz
占空比: 90%
电源电压: 4.25 V ~ 25 V
降压:
升压:
回扫:
反相:
倍增器:
除法器:
Cuk:
隔离:
工作温度: 0°C ~ 70°C
封装/外壳: 8-SOIC(0.154",3.90mm 宽)
包装: 带卷 (TR)
Data Sheet No. PD94700 revA
IRU3137
8-PIN SYNCHRONOUS PWM CONTROLLER
FEATURES
1A Peak Output Drive Capability
0.8V Reference Voltage
Shuts off both drivers at shorted output
and shutdown
Operating with single 5V or 12V supply voltage
Stable with ceramic capacitors
Internal 200KHz Oscillator
Soft-Start Function
Protects the output when control FET is shorted
Synchronous Controller in 8-Pin Package
APPLICATIONS
DDR Memory Application
Low voltage distributed DC-DC
Graphic Cards
Low cost on-board DC to DC such as 5V to 2.5V,
1.8V or 0.8V
TYPICAL APPLICATION
DESCRIPTION
The IRU3137 controller IC is designed to provide a low
cost and high performance synchronous Buck regulator
for on-board DC to DC converter applications. The out-
put voltage can be set as low as 0.8V and higher voltage
can be obtained with an external voltage divider. High
peak current gate drivers provide fast switching transi-
tion for applications requiring high output current in the
range of 15A to 20A.
This device features an internal 200KHz oscillator, un-
der-voltage lockout for both Vcc and Vc supplies, an
external programmable soft-start function as well as
output under-voltage detection that latches off the de-
vice when an output short is detected.
12V
L1
Optional
C3
1uF
C4
1uF
C2
4x 150uF
1uH
C1
47uF
5V
Vcc
Vc
C8
0.1uF
SS/SD
HDrv
U1 LDrv
D1
Q1
IRF7832
Q2
IRF7832
L2
2.2uH
2.5V
@ 15A
C7
3x 330uF
IRU3137
Comp
R3
40m ? , Poscap
C9
3300pF
Optional
R4
30K
Gnd
Fb
R5
1K, 1%
2.15K
Figure 1 - Typical application of IRU3137.
PACKAGE ORDER INFORMATION
www.irf.com
T A (°C)
0 To 70
DEVICE
IRU3137CS
PACKAGE
8-Pin Plastic SOIC NB (S)
FREQUENCY
200KHz
1
相关PDF资料
PDF描述
IRU3138CSTRPBF IC REG CTRLR BUCK PWM VM 14-SOIC
IRU3146CFTR IC REG CTRLR BUCK PWM VM 28TSSOP
IRU431LCL5TR IC VREF SHUNT PREC ADJ SOT-23-5
ISL1801IVZ IC CONV SOLAR PWR 48TSSOP
ISL21009BFB825Z-T7A IC VREF SERIES PREC 2.5V 8-SOICN
相关代理商/技术参数
参数描述
IRU3138 制造商:IRF 制造商全称:International Rectifier 功能描述:SYNCHRONOUS PWM CONTROLLER FOR TERMINATION POWER SUPPLY APPLICATIONS
IRU3138CS 制造商:IRF 制造商全称:International Rectifier 功能描述:SYNCHRONOUS PWM CONTROLLER FOR TERMINATION POWER SUPPLY APPLICATIONS
IRU3138CSTR 功能描述:IC REG CTRLR BUCK PWM VM 14-SOIC RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:4,000 系列:- PWM 型:电压模式 输出数:1 频率 - 最大:1.5MHz 占空比:66.7% 电源电压:4.75 V ~ 5.25 V 降压:是 升压:无 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-40°C ~ 85°C 封装/外壳:40-VFQFN 裸露焊盘 包装:带卷 (TR)
IRU3138CSTRPBF 功能描述:电压模式 PWM 控制器 SYNC PWM CTRLLER 1A .8V 200 to 400kHz RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel
IRU3146 制造商:IRF 制造商全称:International Rectifier 功能描述:DUAL SYNCHRONOUS PWM CONTROLLER WITH CURRENT SHARING CIRCUITRY AND AUTO-RESTART