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參數資料
| 型號： | IRU3073 |
| 廠商： | International Rectifier |
| 英文描述： | SYNCHRONOUS PWM CONTROLLER WITH OVER-CURRENT PROTECTION / LDO CONTROLLER |
| 中文描述： | 同步PWM控制器，帶有過電流保護/ LDO控制器 |
| 文件頁數： | 1/21頁 |
| 文件大小： | 236K |
| 代理商： | IRU3073 |
IRU3073
1
Rev. 1.0
09/17/03
www.irf.com
DESCRIPTION
The IRU3073 controller IC is designed to provide a low
cost synchronous Buck regulator for on-board DC to DC
converter for multiple output applications.
The outputs can be programmed as low as 0.8V for low
voltage applications.
Selectable over-current protection is provided by using
external MOSFET's on-resistance for optimum cost and
performance.
This device features a programmable frequency set from
200KHz to 400KHz, under-voltage lockout for all input
supplies, an external programmable soft-start function
as well as output under-voltage detection that latches
off the device when an output short is detected.
Synchronous Controller plus one LDO controller
Current Limit using MOSFET Sensing
Single 5V/12V Supply Operation
Programmable Switching Frequency up to
400KHz
Soft-Start Function
Fixed Frequency Voltage Mode
Precision Reference Voltage Available
Uncommitted Error Amplifier available for DDR
voltage tracking application
APPLICATIONS
DDR memory source sink V
TT
application
Low cost on-board DC to DC such as
12V/5V to output voltages as low as 0.8V
Graphic Card
Hard Disk Drive
Multi-Output Applications
PACKAGE ORDER INFORMATION
FEATURES
SYNCHRONOUS PWM CONTROLLER WITH
OVER-CURRENT PROTECTION / LDO CONTROLLER
T
A
(°C)
0 To 70
DEVICE PACKAGE
IRU3073CQ 16-Pin Plastic QSOP NB (Q)
Data Sheet No. PD94699
Figure 1 - Typical application of IRU3073.
TYPICAL APPLICATION
IRU3073
U1
Vcc
VcL
HDrv
LDrv
Fb1
Gnd
Comp
SS/SD
V
OUT1
Rt
+5V
OCSet
PGnd
Drv2
Fb2
3.3V
V
OUT2
Q1
C2
C11
C9
C1
C6
C7
C10
L2
L1
Q4
Q5
R1
R2
R8
R9
R7
R10
R11
VcH
V
P1
V
REF
12V
C3
0.1uF
C4
D1
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相關代理商/技術參數 |
參數描述 |
|---|---|
| IRU3073CQ | 制造商:IRF 制造商全稱:International Rectifier 功能描述:SYNCHRONOUS PWM CONTROLLER WITH OVER-CURRENT PROTECTION / LDO CONTROLLER |
| IRU3073CQTR | 功能描述:IC REG DL BCK/LINEAR 16-QSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 穩壓器 - 線性 + 切換式 系列:- 標準包裝:2,500 系列:- 拓撲:降壓（降壓）同步（2），線性（LDO）（1） 功能:任何功能 輸出數:3 頻率 - 開關:300kHz 電壓/電流 - 輸出 1:控制器 電壓/電流 - 輸出 2:控制器 電壓/電流 - 輸出 3:控制器 帶 LED 驅動器:無 帶監控器:無 帶序列發生器:是 電源電壓:4.5 V ~ 24 V 工作溫度:-40°C ~ 85°C 安裝類型:* 封裝/外殼:28-TSSOP（0.173"，4.40mm 寬） 供應商設備封裝:* 包裝:帶卷 (TR) 其它名稱:ISL6402IVZ-TTR |
| IRU3137 | 制造商:IRF 制造商全稱:International Rectifier 功能描述:8-PIN SYNCHRONOUS PWM CONTROLLER |
| IRU3137CS | 制造商:IRF 制造商全稱:International Rectifier 功能描述:8-PIN SYNCHRONOUS PWM CONTROLLER |
| IRU3137CSTR | 功能描述:IC REG CTRLR BUCK PWM VM 8-SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 穩壓器 - DC DC 切換控制器 系列:- 標準包裝:4,000 系列:- PWM 型:電壓模式 輸出數:1 頻率 - 最大:1.5MHz 占空比:66.7% 電源電壓:4.75 V ~ 5.25 V 降壓:是 升壓:無 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-40°C ~ 85°C 封裝/外殼:40-VFQFN 裸露焊盤 包裝:帶卷 (TR) |
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