EEWORLDEEWORLDEEWORLD

Part Number

Search

IRU3138CS

Description
Switching Controller
CategoryPower/power management    The power supply circuit   
File Size183KB,18 Pages
ManufacturerInfineon
Websitehttp://www.infineon.com/
Download Datasheet Parametric Compare View All

IRU3138CS Overview

Switching Controller

IRU3138CS Parametric

Parameter NameAttribute value
MakerInfineon
package instruction,
Reach Compliance Codecompliant
ECCN codeEAR99
Analog Integrated Circuits - Other TypesSWITCHING CONTROLLER
Data Sheet No. PD94701 revB
IRU3138(PbF)
SYNCHRONOUS PWM CONTROLLER
FOR TERMINATION POWER SUPPLY APPLICATIONS
FEATURES
1A Peak Output Drive Capability
0.8V Precision Reference Voltage Available
Shuts off both drivers at shorted output
and shutdown
200KHz to 400KHz operation set by an external
resistor
Soft-Start Function
Uncommitted Error Amplifier available for DDR
voltage tracking application
Protects the output when control FET is shorted
Synchronous Controller in 14-Pin Package
DESCRIPTION
The IRU3138 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 IRU3138
together with two N-channel MOSFETs, 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 de-
vice when an output short is detected.
APPLICATIONS
DDR memory source sink Vtt application
Graphic Card
Low cost on-board DC to DC such as
5V to 3.3V, 2.5V or 1.8V
TYPICAL APPLICATION
5V
V
DDQ
(2.5V)
C1
0.1uF
R1
1K
12V
C2
1uF
C3
2x 47uF
L1
1uH
C4
47uF
DDR
Memory
Vcc
V
REF
V
P
Vc
HDrv
Q1
IRF7460
D1
BAT54
L2
3.3uH
R2
1K
SS/SD
C5
0.1uF
U1
IRU3138
LDrv
PGnd
Fb
Vtt
1.25V @ 10A
C6
2x 150uF
40m
V
Rt
Comp
C7
3300pF
R3
13K
Q2
IRF7456
Gnd
Figure 1 - Typical application of IRU3138 when V
TT
tracks the V
DDQ
.
PACKAGE ORDER INFORMATION
Part Nuber
Package
Parts Per Tube Parts Per Reel
IRU3138CS
14-Pin Plastic SOIC NB
55
2500
IRU3138CSPbF 14-Pin Plastic SOIC NB
55
2500
www.irf.com
1

IRU3138CS Related Products

IRU3138CS IRU3138CSPBF
Description Switching Controller Switching Controller, Voltage-mode, 440kHz Switching Freq-Max, BIPolar, PDSO14,
Maker Infineon Infineon
Reach Compliance Code compliant compliant
ECCN code EAR99 EAR99
Analog Integrated Circuits - Other Types SWITCHING CONTROLLER SWITCHING CONTROLLER
Can someone send me a copy of the ATA Command Set? And where do I send the commands after I create them?
Can someone send me a copy of the ATA Command Set? And where do I send the commands after I create them? Don't reply and look for them online yourself....
thedegree Embedded System
Serial communication
#include#define uchar unsigned char #define uint unsigned int sbit E=P2^7; //1602 enable pin sbit RW=P2^6; //1602 read and write pin sbit RS=P2^5; //1602 data/command selection pin uint t; uchar input...
51新手 51mcu
Simple head mounted LCD information display
Wearable devices are a hot development trend now. With the miniaturization and low power consumption of electronic devices, they will become more and more popular. RL78 is a very advanced MCU. Its ext...
lcdi Renesas Electronics MCUs
I would like to ask about the interrupt service subroutine ISR
I saw on the Internet that ISR cannot have return values and parameters, but in the ISR of wince, the OEMInterruptHandle() function has both return values and parameters. This OEMInterruptHandle funct...
核桃佳子 Embedded System
IBM chip reaches 500GHz speed, will enable high-speed wireless networks
Sina Technology News, June 20, according to foreign media reports, IBM and Georgia Tech have successfully made a chip run at 500GHz, at a temperature of -268℃, which also refreshed the speed record of...
rain MCU
Happy Dragon Boat Festival, salty rice dumplings, sweet rice dumplings, which kind do you like?
Well, I like roasted zongzi~~~~Did you eat zongzi today? As a zongzi lover, I bought two boxes of zongzi a month in advance and started eating them. (ω)╯Eat zongzi (ω)╯Eat zongzi...
okhxyyo Talking

EEWorld
subscription
account

EEWorld
service
account

Automotive
development
circle

Robot
development
community

Index Files: 985  792  1609  655  2513  20  16  33  14  51 
Datasheet   0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Room 1530, 15th Floor, Building B, No. 18 Zhongguancun Street, Haidian District, Beijing Telephone: (010) 82350740 Postal Code: 100190
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved 京ICP证060456号 京ICP备10001474号-1 电信业务审批[2006]字第258号函 京公网安备 11010802033920号