8220 datasheet, PDF - EEWORLD Datasheet

8220: DescriptionLOW-DROPOUT REGULATORS . HIGH EFFICIENCY; File Size136KB，8 Pages; ManufacturerAllegro; Websitehttp://www.allegromicro.com/

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LOW-DROPOUT REGULATORS . HIGH EFFICIENCY

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8220

THRU

8233

PRELIMINARY INFORMATION

(subject to change without notice)

January 18, 2000

LOW-DROPOUT REGULATORS

— HIGH EFFICIENCY

Designed specifically to meet the requirement for extended opera-

tion of battery-powered equipment such as cordless and cellular tele-

phones, the A8220SLH thru A8233SLH voltage regulators offer the

reduced dropout voltage and quiescent current essential for maximum

battery life. Applicable also to palmtop computers and personal data

assistants, these devices deliver a regulated output at up to 100 mA

(transient), which is limited only by package power dissipation. Regu-

lated output voltages of 2.6, 2.7, 2.8, 2.9, 3.0 and 3.3 are currently

provided. Other voltages, down to 2.0 volts, are available on special

order.

A PMOS pass element provides a typical dropout voltage of only

125 mV at 50 mA of load current. The low dropout voltage permits

deeper battery discharge before output regulation is lost. Quiescent

current does not increase significantly as the dropout voltage is ap-

proached, an ideal feature in standby/resume power systems where data

integrity is crucial. Regulator accuracy and excellent temperature

characteristics are provided by a bandgap reference. The A8220SLH

thru A8233SLH include ENABLE inputs to give the designer complete

control over power up, standby, or power down.

These devices are supplied in a thermally enhanced 5-lead small-

outline plastic package similar to the SOT-23, and fitting the SC-74A

footprint. All devices are rated for operation over a temperature range

of -20°C to +85°C.

Data Sheet

27468.11

A82xxSLH

CONNECT

ABSOLUTE MAXIMUM RATINGS

Input Voltage, V

. . . . . . . . . . . . . . .

7 V

Peak Output Current,

. . . . . . . . . . . . . . . . . .

100 mA*

Enable Input Voltage, V

. . . . . . . . . .

Operating Temperature Range,

. . . . . . . . . . . . .

-20

C to +85

Junction Temperature, T

. . . .

+150

Storage Temperature Range,

. . . . . . . . . . . .

-40

C to +150

* Output current rating is limited by input

voltage, duty cycle, and ambient temperature.

Under any set of conditions, do not exceed a

junction temperature of +150°C. See follow-

ing pages.

U Y

D L

O N

R O

P E

D C

E N

U E

IN ER

T F

N E

O R

C R

IS O

D F

—

ENABLE

GND

Dwg. PS-021-4

OUT

FEATURES AND BENEFITS

High Efficiency Provides Extended Battery Life

125 mV Typical Dropout Voltage at I

= 50 mA

µA

Typical Quiescent Current

Less Than 1

µA

“Sleep” Current

Low Output Noise

100 mA Peak Output Current

Improved PSRR and Transient Performance

APPLICATIONS

Cordless and Cellular Telephones

Personal Data Assistants

Personal Communicators

Palmtop Computers

Always order by complete part number, e.g.,

A82xxSLH

, where “xx” is

the required output voltage in tenths.

8220 Related Products

	8220	A8220SLH	A8222SLH	A8231SLH	A8233SLH
Description	LOW-DROPOUT REGULATORS . HIGH EFFICIENCY	LOW-DROPOUT REGULATORS . HIGH EFFICIENCY	LOW-DROPOUT REGULATORS . HIGH EFFICIENCY	LOW-DROPOUT REGULATORS . HIGH EFFICIENCY	LOW-DROPOUT REGULATORS . HIGH EFFICIENCY
Maker	-	Allegro	Allegro	Allegro	Allegro
Parts packaging code	-	SOT-23	SOT-23	SOT-23	SOT-23
package instruction	-	PLASTIC, SOT-23, SC-74A, 5 PIN	PLASTIC, SOT-23, SC-74A, 5 PIN	LSSOP, TSOP5/6,.11,37	LSSOP, TSOP5/6,.11,37
Contacts	-	5	5	5	5
Reach Compliance Code	-	unknow	unknow	unknow	unknow
ECCN code	-	EAR99	EAR99	EAR99	EAR99
Maximum drop-back voltage 1	-	0.25 V	0.25 V	0.25 V	0.25 V
Maximum input voltage	-	7 V	7 V	7 V	7 V
Minimum input voltage	-	4 V	4 V	4 V	4 V
JESD-30 code	-	R-PDSO-G5	R-PDSO-G5	R-PDSO-G5	R-PDSO-G5
length	-	3 mm	3 mm	3 mm	3 mm
Number of functions	-	1	1	1	1
Number of terminals	-	5	5	5	5
Working temperatureTJ-Max	-	150 °C	150 °C	150 °C	150 °C
Maximum output current 1	-	0.05 A	0.05 A	0.05 A	0.05 A
Maximum output voltage 1	-	2.05 V	2.25 V	3.15 V	3.35 V
Minimum output voltage 1	-	1.95 V	2.15 V	3.05 V	3.25 V
Nominal output voltage 1	-	2 V	2.2 V	3.1 V	3.3 V
Package body material	-	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY
encapsulated code	-	LSSOP	LSSOP	LSSOP	LSSOP
Package shape	-	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR
Package form	-	SMALL OUTLINE, LOW PROFILE, SHRINK PITCH	SMALL OUTLINE, LOW PROFILE, SHRINK PITCH	SMALL OUTLINE, LOW PROFILE, SHRINK PITCH	SMALL OUTLINE, LOW PROFILE, SHRINK PITCH
Certification status	-	Not Qualified	Not Qualified	Not Qualified	Not Qualified
Regulator type	-	FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR	FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR	FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR	FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR
Maximum seat height	-	1.25 mm	1.25 mm	1.25 mm	1.25 mm
surface mount	-	YES	YES	YES	YES
Terminal form	-	GULL WING	GULL WING	GULL WING	GULL WING
Terminal pitch	-	0.95 mm	0.95 mm	0.95 mm	0.95 mm
Terminal location	-	DUAL	DUAL	DUAL	DUAL
width	-	1.975 mm	1.975 mm	1.975 mm	1.975 mm

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