音影先锋亚洲天堂网|电影世界尽头的爱完整版播放|国产 熟女 91|高清无码免费观看欧美日韩|韩国一区二区三区黄色录像|美女亚洲加勒比在线|亚洲综合网 开心五月|7x成人在线入口|成人网站免费日韩毛片区|国产黄片?一级?二级?三级

IRU3138CS Datasheet

  • IRU3138CS

  • SYNCHRONOUS PWM CONTROLLER FOR TERMINATION POWER SUPPLY APPL...

  • 18頁

  • IRF

掃碼查看芯片數(shù)據(jù)手冊

上傳產(chǎn)品規(guī)格書

PDF預覽

Data Sheet No. PD94701
IRU3138
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
12V
C2
1uF
C3
2x 47uF
L1
1uH
C4
47uF
DDR
Memory
R1
1K
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
Q2
IRF7456
Rt
Comp
C7
3300pF
R3
13K
Gnd
Figure 1 - Typical application of IRU3138 when V
TT
tracks the V
DDQ
.
PACKAGE ORDER INFORMATION
T
A
(擄C)
0 To 70
DEVICE
IRU3138CS
PACKAGE
14-Pin Plastic SOIC NB (S)
Rev. 1.0
01/29/04
www.irf.com
1

IRU3138CS相關型號PDF文件下載

您可能感興趣的PDF文件資料

熱門IC型號推薦

掃碼下載APP，
一鍵連接廣大的電子世界。

在線人工客服

買家服務：
賣家服務：
技術客服：

0571-85317607

網(wǎng)站技術支持

13606545031

客服在線時間周一至周五
9:00-17:30

關注官方微信號，
第一時間獲取資訊。

建議反饋
返回頂部

建議反饋

聯(lián)系人：

聯(lián)系方式：

按住滑塊，拖拽到最右邊
>>
感謝您向阿庫提出的寶貴意見，您的參與是維庫提升服務的動力！意見一經(jīng)采納，將有感恩紅包奉上哦！