CMPWR160SA CALMIRCO [California Micro Devices Corp], CMPWR160SA Datasheet

CMPWR160SA

Manufacturer Part Number

CMPWR160SA

Description

USB peripheral Power Management

Manufacturer

CALMIRCO [California Micro Devices Corp]

Datasheet

1.CMPWR160SA.pdf (10 pages)

Current page: 1 of 10
Download datasheet (125Kb)

12/5/2000

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

The SmartOR

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

allowing the CMPWR160 to work in Wired-ORed power

systems.

215 Topaz Street, Milpitas, California 95035

CALIFORNIA MICRO DEVICES

POR

OUT

Package

8 LEAD SOIC

Pin Diagram

CMPWR160 combines a Low Dropout

CMPWR160

Top View

supply for POR to operate,

Power SOIC

USB Peripheral Power Management

Style

GND

Standard Part Ordering Information

CMPWR160SA/T

GND

Tel: (408) 263-3214

Block Diagram

Tubes

3.3V

REF

Applications

• Bus-powered USB peripherals

• Self-powered USB peripherals

• Portable/battery-powered devices

• Critical power monitoring, hot-insertion devices

When V

enter reverse-current protection mode and maintain

isolation between V

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

and fully isolate the V

A ShutDown input (

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.

OUT

Simplified Electrical Schematic

, the device will automatically enter shutdown mode

Ordering Part Number

–

is powered down, the device will automatically

CMPWR160SA/R

Fax: (408) 263-7846

Tape & Reel

2.9V

OUT

and V

) forces the regulator to be

power source from the output.

–

30ms

. This is useful for applica-

collapsing below

CMPWR160SA

www.calmicro.com

Part Marking

CMPWR160

3.3V/500mA

POR

OUT

C1571000

Related parts for CMPWR160SA

CMPWR160SA Summary of contents

Page 1

... CC and V . This is useful for applica- OUT CC collapsing below CC power source from the output forces the regulator – V OUT 3.3V/500mA + POR 30ms – 2.9V Ordering Part Number Tape & Reel Part Marking CMPWR160SA/R CMPWR160SA Fax: (408) 263-7846 www.calmicro.com C1571000 1 ...

Page 2

CALIFORNIA MICRO DEVICES Parameter ESD Protection (HBM Voltage CC OUT SD Logic Input Voltage POR Logic Output Voltage Temperature: Storage Operating Ambient Operating Junction Note 1 Power Dissipation Parameter V CC Temperature (Ambient) Load Current C EXT Symbol ...

Page 3

CALIFORNIA MICRO DEVICES Interface Signals V is the input power source for the Low Drop Out CC Regulator, capable of delivering 3.3V/500mA output current even when the input is as low as 4.2V. Internal loading on this pin is typically ...

Page 4

CALIFORNIA MICRO DEVICES Typical DC Characteristics Unless stated otherwise, all DC characteristics were measured at room temperature with a nominal V supply voltage of 5V and an output capacitance of 10µF. Resistive load conditions were used. Line Regulation Characteristics of ...

Page 5

CALIFORNIA MICRO DEVICES Typical DC Characteristics V Operating Current (no load, CC across a range of V supply voltages with the regulator CC enabled in Figure 4. The graph shows that the operating current is 35µA typical and changes by ...

Page 6

CALIFORNIA MICRO DEVICES Typical Transient Characteristics The transient characterization test setup is shown in Figure 6. It was the setup used for the transient tests unless specified otherwise. A maximum rated load current of 6.6Ω (500mA @ 3.3V) was used ...

Page 7

CALIFORNIA MICRO DEVICES Typical Transient Characteristics V Power down CC Figure 8 shows the output response of the regulator during a complete power down situation under full load conditions with SD tied Shutdown Transient Response The ...

Page 8

CALIFORNIA MICRO DEVICES Typical Transient Characteristics Load Step response Figure 11 shows the output voltage (Ch1) response of the regulator during a step load change between 5mA and 500mA (represented on Ch2). For the 5mA to 500mA transition an initial ...

Page 9

... P (θ AMB JUNC JA The CMPWR160SA is housed in a thermally enhanced package where all the GND pins (5 through 8) are integral to the leadframe (fused leadframe). When the device is mounted on a double sided printed circuit board with two square inches of copper allocated for “heat spreading”, the resulting θ ...

Page 10

CALIFORNIA MICRO DEVICES Typical Thermal Characteristics Output Voltage (Rated) vs. Temperature Figure 15 shows the regulator steady state performance when fully loaded (500mA) from –25° the rated maximum temperature of 70°C. The output variation at maximum load is ...

Related keywords

CMPWR160SA datasheet
CMPWR160SA data sheet
CMPWR160SA pdf datasheet
CMPWR160SA component
CMPWR160SA part
CMPWR160SA distributor
CMPWR160SA RoHS
CMPWR160SA datasheet download