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參數(shù)資料
| 型號： | CMPWR160SA/R |
| 元件分類： | 電源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8 |
| 封裝： | POWER, SOIC-8 |
| 文件頁數(shù)： | 1/9頁 |
| 文件大?。?/td> | 112K |
| 代理商： | CMPWR160SA/R |
2001 California Micro Devices Corp. All rights reserved. SmartOR is a trademark of California Micro Devices Corporation.
9/17/2001
1
215 Topaz Street, Milpitas, California 95035
Tel: (408) 263-3214 Fax: (408) 263-7846 www.calmicro.com
CMPWR160
CALIFORNIA MICRO DEVICES
USB Peripheral Power Management
Features
3.3V regulated output up to 500mA (PWR160SA),
or 300mA (PWR160MA)
Quiescent current 35μA (typical)
Shutdown mode current 7μA (typical)
Power watch-dog function, 30ms active LOW
Power-Outage-Reset (POR) pulse
Foldback current limiting protection
Reverse-current and thermal overload protection
8 pin SOIC and MSOP power packages
Applications
Bus-powered USB peripherals
Self-powered USB peripherals
Portable/battery-powered devices
Critical power monitoring, hot-insertion devices
C1571000
Pin Diagram
Simplified Electrical Schematic
The SmartOR
TM
CMPWR160 combines a Low Dropout
Regulator (LDO) with a Power-Outage-Reset (POR)
pulse generator, and is intended for Universal Serial
Bus (USB) peripherals. To meet the specification
requirements of both USB 1.0 and USB 2.0, the
CMPWR160 draws a very low quiescent current
(35μA), and delivers up to 500mA of load current at a
fixed 3.3V output.
The POR pulse (active LOW) has a typical duration of
30ms after the output has exceeded and stabilized
above 2.9V. Thus a new POR pulse is developed each
time the regulator power is interrupted and restored,
which occurs often on USB buses when cables are
connected (or disconnected) by the user. It is not
necessary to have a V
supply for POR to operate,
allowing the CMPWR160 to work in Wired-ORed power
systems.
When V
is powered down, the device will automati-
cally enter reverse-current protection mode and
maintain isolation between V
and V
. This is useful
for applications that can use power from the USB port
in addition to internal batteries or an AC adapter supply
(Wired-ORed power systems). In the event of V
collapsing below V
, the device will automatically
enter shutdown mode and fully isolate the V
CC
power
source from the output.
A ShutDown input (
SD
) forces the regulator to be
powered down on demand. While in shutdown mode the
POR circuitry will remain active, making the device
suitable for systems which contain backup or alternative
power sources.
The CMPWR160 is available in 8-pin SOIC, (500mA
rated) or MSOP (300mA rated) thermally enhanced
packages, ideal for applications where space
is tight.
Pin Diagram and Electrical Schematic
Standard Part Ordering Information
Package
Pin
8
8
Ordering Part Number
Tape & Reel
CMPWR160SA/R
CMPWR160SA/R
Style
Tubes
Part Marking
CMPWR160SA
160M
Power SOIC
Power MSOP
CMPWR160SA/T
CMPWR160MA/T
1
2
3
4
V
CC
SD
POR
V
OUT
8
7
6
5
GND
GND
GND
GND
Top View
CMPWR160
8 LEAD SOIC and MSOP
V
OUT
3.3V
POR
V
REF
3.3V
+
–
V
CC
SD
2.9V
GND
+
30ms
–
SD
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CMPWR160SAT | 制造商:CALMIRCO 制造商全稱:California Micro Devices Corp 功能描述:USB peripheral Power Management |
| CMPWR161 | 制造商:CALMIRCO 制造商全稱:California Micro Devices Corp 功能描述:Micropower, Low Noise 4.75V/150mA LDO Regulator |
| CMPWR161R | 制造商:CALMIRCO 制造商全稱:California Micro Devices Corp 功能描述:Micropower, Low Noise 4.75V/150mA LDO Regulator |
| CMPWR161Y | 制造商:CALMIRCO 制造商全稱:California Micro Devices Corp 功能描述:Micropower, Low Noise 4.75V/150mA LDO Regulator |
| CMPWR163-33 | 制造商:CALMIRCO 制造商全稱:California Micro Devices Corp 功能描述:Micropower, 150mA / 3.3V Low Dropout CMOS Regulator |
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