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參數資料
| 型號： | CMPWR160 |
| 廠商： | California Micro Devices Corporation |
| 英文描述： | USB peripheral Power Management |
| 中文描述： | USB外設電源管理 |
| 文件頁數： | 1/10頁 |
| 文件大小： | 124K |
| 代理商： | CMPWR160 |
CALIFORNIA MICRO DEVICES
2000 California Micro Devices Corp. All rights reserved. SmartOR is a trademark of California Micro Devices Corporation.
12/5/2000
1
215 Topaz Street, Milpitas, California 95035
Tel: (408) 263-3214 Fax: (408) 263-7846 www.calmicro.com
CMPWR160
USB Peripheral Power Management
Features
3.3V regulated output up to 500mA
Quiescent current 35μA (typical)
Shutdown mode current 7μA (typical)
30ms active LOW Power-On Reset (POR) pulse
Thermal overload protection
Foldback current limiting protection
Reverse-current protection
8 pin SOIC power package
Applications
Bus-powered USB peripherals
Self-powered USB peripherals
Portable/battery-powered devices
Critical power monitoring, hot-insertion devices
C1571000
1
2
3
4
V
CC
SD
POR
V
OUT
8
7
6
5
GND
GND
GND
GND
Top View
CMPWR160
8 LEAD SOIC
V
OUT
3.3V/500mA
POR
V
REF
3.3V
+
–
V
CC
SD
2.9V
GND
+
30ms
–
SD
Pin Diagram
Simplified Electrical Schematic
Standard Part Ordering Information
Package
Pin
8
Ordering Part Number
Tape & Reel
CMPWR160SA/R
Style
Tubes
Part Marking
CMPWR160SA
Power SOIC
CMPWR160SA/T
The SmartOR
TM
CMPWR160 combines a Low Dropout
Regulator (LDO) with a Power-On Reset (POR) pulse
generator, and is intended for Universal Serial Bus
(USB) peripherals. To meet the specification require-
ments 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 automatically
enter reverse-current protection mode and maintain
isolation between V
and V
. This is useful for applica-
tions 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 an 8-pin SOIC thermally
enhanced package, ideal for applications where space
is tight.
Block Diagram
相關PDF資料 |
PDF描述 |
|---|---|
| CMPWR160SA | USB peripheral Power Management |
| CMPWR160SAR | USB peripheral Power Management |
| CMPWR160SAT | USB peripheral Power Management |
| CMPWR161 | Micropower, Low Noise 4.75V/150mA LDO Regulator |
| CMPWR161R | Micropower, Low Noise 4.75V/150mA LDO Regulator |
相關代理商/技術參數 |
參數描述 |
|---|---|
| CMPWR160SA | 制造商:CALMIRCO 制造商全稱:California Micro Devices Corp 功能描述:USB peripheral Power Management |
| CMPWR160SA/R | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog IC |
| CMPWR160SA/T | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog IC |
| CMPWR160SAR | 制造商:CALMIRCO 制造商全稱:California Micro Devices Corp 功能描述:USB peripheral Power Management |
| CMPWR160SAT | 制造商:CALMIRCO 制造商全稱:California Micro Devices Corp 功能描述:USB peripheral Power Management |
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