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參數(shù)資料
| 型號(hào)： | IRU3038CF |
| 廠商： | International Rectifier |
| 英文描述： | RES CHP 3.83K 1/8W 1% |
| 中文描述： | 同步PWM控制器終止電源應(yīng)用 |
| 文件頁數(shù)： | 1/18頁 |
| 文件大?。?/td> | 139K |
| 代理商： | IRU3038CF |
IRU3038
1
Rev. 2.0
09/12/02
www.irf.com
TYPICAL APPLICATION
DESCRIPTION
The IRU3038 controller IC is designed to provide a low
cost synchronous Buck regulator for voltage tracking
applications such DDR memory and general purpose
on-board DC to DC converter. Modern micro processors
combined with DDR memory, need high-speed bandwidth
data bus which requires a particular bus termination volt-
age. This voltage will be tightly regulated to track the
half of chipset voltage for best performance. The IRU3038
together with dual N-channel MOSFETs such as IRF7313,
provide a low cost solution for such applications. This
device features a programmable frequency set from
200KHz to 400KHz, under-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 device when an output short is detected.
Synchronous Controller in 14-Pin Package
Operating with single 5V or 12V supply voltage
200KHz to 400KHz operation set by an external
resistor
Soft-Start Function
Fixed Frequency Voltage Mode
500mA Peak Output Drive Capability
Uncommitted Error Amplifier available for DDR
voltage tracking application
1.25V Reference Voltage
Protects the output when control FET is shorted
APPLICATIONS
DDR memory source sink Vtt application
Low cost on-board DC to DC such as
5V to 3.3V, 2.5V or 1.8V
Graphic Card
Hard Disk Drive
PACKAGE ORDER INFORMATION
T
A
(°C)
0 To 70
0 To 70
FEATURES
SYNCHRONOUS PWM CONTROLLER
FOR TERMINATION POWER SUPPLY APPLICATIONS
DEVICE PACKAGE
IRU3038CF 14-Pin Plastic TSSOP (F)
IRU3038CS 14-Pin Plastic SOIC NB (S)
PRELIMINARY DATA SHEET
Data Sheet No. PD94250
Figure 1 - Typical application of IRU3038 when Vtt tracks the V
DDQ
.
IRU3038
U1
Vcc
Vc
HDrv
LDrv
Fb
Gnd
Comp
SS
C1
0.1uF
C2
1uF
C5
0.1uF
C7
2200pF
R3
33K
Q1
1/2 of IRF7313
Q2
1/2 of IRF7313
L2
D03316P-103, 10uH, 3.9A
L1
1uH
C3
10TPB100M,
100uF, 55m
C4
47uF
Vtt
1.25V @ 3A
C6
2x 6TPB150M,
150uF, 55m
12V
PGnd
Rt
V
P
V
REF
R1
1K
R2
1K
DDR
Memory
V
DDQ
(2.5V)
5V
D1
BAT54
or 1N4148
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| IRU3038CS | SYNCHRONOUS PWM CONTROLLER FOR TERMINATION POWER SUPPLY APPLICATIONS |
| IRU431AL | LOW -VOLTAGE ADJUSTABLE PRECISION SHUNT REGULATOR |
| IRU431ALCL3 | LOW -VOLTAGE ADJUSTABLE PRECISION SHUNT REGULATOR |
| IRU431ALCL5 | LOW -VOLTAGE ADJUSTABLE PRECISION SHUNT REGULATOR |
| IRU431L | LOW -VOLTAGE ADJUSTABLE PRECISION SHUNT REGULATOR |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| IRU3038CFTRPBF | 制造商:International Rectifier 功能描述:Voltage Mode PWM Controller 500mA 14-Pin TSSOP T/R |
| IRU3038CS | 功能描述:IC REG CTRLR BUCK PWM VM 14-SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標(biāo)準(zhǔn)包裝:2,000 系列:- PWM 型:電流模式 輸出數(shù):1 頻率 - 最大:1MHz 占空比:50% 電源電壓:9 V ~ 10 V 降壓:無 升壓:是 回掃:是 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:8-TSSOP（0.173"，4.40mm 寬） 包裝:帶卷 (TR) |
| IRU3038CSTR | 功能描述:IC REG CTRLR BUCK PWM VM 14-SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 特色產(chǎn)品:LM3753/54 Scalable 2-Phase Synchronous Buck Controllers 標(biāo)準(zhǔn)包裝:1 系列:PowerWise® PWM 型:電壓模式 輸出數(shù):1 頻率 - 最大:1MHz 占空比:81% 電源電壓:4.5 V ~ 18 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:-5°C ~ 125°C 封裝/外殼:32-WFQFN 裸露焊盤 包裝:Digi-Reel® 產(chǎn)品目錄頁面:1303 (CN2011-ZH PDF) 其它名稱:LM3754SQDKR |
| IRU3039 | 制造商:IRF 制造商全稱:International Rectifier 功能描述:SYNCHRONOUS PWM CONTROLLER WITH OVER CURRENT PROTECTION |
| IRU3039CH | 制造商:IRF 制造商全稱:International Rectifier 功能描述:SYNCHRONOUS PWM CONTROLLER WITH OVER CURRENT PROTECTION |
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