参数资料
型号: IRU3047CWTR
厂商: International Rectifier
文件页数: 1/19页
文件大小: 0K
描述: IC REG CTRLR BUCK PWM VM 20-SOIC
标准包装: 1
PWM 型: 电压模式
输出数: 2
频率 - 最大: 220kHz
占空比: 90%
电源电压: 4.2 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: 20-SOIC(0.295",7.50mm 宽)
包装: 剪切带 (CT)
产品目录页面: 1384 (CN2011-ZH PDF)
其它名称: *IRU3047CWTR
IRU3047CWCT
Data Sheet No. PD94252
IRU3047
DUAL SYNCHRONOUS PWM CONTROLLER WITH
CURRENT SHARING CIRCUITRY AND LDO CONTROLLER
PRELIMINARY DATA SHEET
FEATURES
Dual Synchronous Controller in 20-Pin Package
with 180 8 out-of-phase operation
LDO Controller with 40mA drive
Can be configured as 2-Independent or 2-Phase
PWM Controller
Programmable Current Sharing in 2-Phase Configu-
ration
Flexible, Same or Separate Supply Operation
Operation from 4V to 25V Input
Internal 200KHz Oscillator per phase
Soft-Start controls all outputs
Fixed Frequency Voltage Mode
500mA Peak Output Drive Capability
Short Circuit Protection for All Outputs
Power Good Output
APPLICATIONS
Dual-Phase Power Supply
DDR Memory Source Sink Vtt Application
Graphic Card
DESCRIPTION
The IRU3047 IC combines a Dual synchronous Buck
controller and a linear regulator controller, providing a
cost-effective, high performance and flexible solution for
multi-output applications. The Dual synchronous con-
troller can be configured as 2-independent or 2-phase
controller. In 2-phase configuration, the IRU3047 provides
a programmable current sharing which is ideal when the
output power exceeds any single input power budget.
IRU3047 provides a separate adjustable output by driv-
ing a switch as a linear regulator. This device features an
internal 200KHz oscillator, under-voltage lockout for all
input supplies, an external programmable soft-start func-
tion as well as output under-voltage detection that latches
off the device when an output short is detected.
Hard Disk Drive
Power supplies requiring multiple outputs
TYPICAL APPLICATION
12V
L1
5V
C12
L2
D1
C11
D2
C1
C2
C3
C4
V CL
VcH1
VcH2
C13
C14
Vcc
HDrv1
Q2
L3
R5
C5
V OUT1
3.3V
C6
Q1
V OUT3
LDrv1
Q3
C16
V OUT2
R1
C7
R2
C8
R3
Fb3
Comp1
U1
IRU3047
PGnd
V REF
Vp2
Fb1
Fb2
R7
R8
C9
R4
Comp2
HDrv2
Q4
C17
L4
R9
PGood
C10
PGood
SS
LDrv2
Gnd
Q5
Figure 1 - Typical application of IRU3047 configured as 2-phase converter.
PACKAGE ORDER INFORMATION
T A (°C)
0 To 70
DEVICE
IRU3047CW
PACKAGE
20-Pin Plastic SOIC (W)
Rev. 1.0
09/09/02
www.irf.com
1
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相关代理商/技术参数
参数描述
IRU3048 制造商:IRF 制造商全称:International Rectifier 功能描述:DUAL SYNCHRONOUS PWM CONTROLLER CIRCUITRY AND LDO CONTROLLER
IRU3048CF 制造商:IRF 制造商全称:International Rectifier 功能描述:DUAL SYNCHRONOUS PWM CONTROLLER CIRCUITRY AND LDO CONTROLLER
IRU3048CFTR 功能描述:IC REG CTRLR BUCK PWM VM 16TSSOP 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:75 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:1MHz 占空比:81% 电源电压:4.3 V ~ 13.5 V 降压:是 升压:是 回扫:是 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:0°C ~ 70°C 封装/外壳:8-SOIC(0.154",3.90mm 宽) 包装:管件 产品目录页面:1051 (CN2011-ZH PDF) 其它名称:296-2543-5
IRU3048CS 制造商:IRF 制造商全称:International Rectifier 功能描述:DUAL SYNCHRONOUS PWM CONTROLLER CIRCUITRY AND LDO CONTROLLER
IRU3048CSTR 功能描述:IC REG CTRLR BUCK PWM VM 16-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:75 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:1MHz 占空比:81% 电源电压:4.3 V ~ 13.5 V 降压:是 升压:是 回扫:是 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:0°C ~ 70°C 封装/外壳:8-SOIC(0.154",3.90mm 宽) 包装:管件 产品目录页面:1051 (CN2011-ZH PDF) 其它名称:296-2543-5