A8231SLM datasheet, PDF - EEWORLD Datasheet

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A8231SLM: DescriptionLOW-DROPOUT REGULATORS . HIGH EFFICIENCY; CategoryPower/power management The power supply circuit; File Size136KB，8 Pages; ManufacturerAllegro; Websitehttp://www.allegromicro.com/

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A8231SLM Overview

LOW-DROPOUT REGULATORS . HIGH EFFICIENCY

A8231SLM Parametric

Parameter Name	Attribute value
Is it Rohs certified?	incompatible
Maker	Allegro
package instruction	TSOP, TSOP5/6,.11,37
Reach Compliance Code	unknow
Adjustability	FIXED
Nominal dropback voltage 1	0.13 V
Maximum absolute input voltage	7 V
JESD-30 code	R-PDSO-G5
JESD-609 code	e0
Maximum grid adjustment rate	0.01%
Maximum load regulation	0.02%
Output times	1
Number of terminals	5
Maximum operating temperature	85 °C
Minimum operating temperature	-20 °C
Maximum output current 1	0.05 A
Nominal output voltage 1	3.1 V
Package body material	PLASTIC/EPOXY
encapsulated code	TSOP
Encapsulate equivalent code	TSOP5/6,.11,37
Package shape	RECTANGULAR
Package form	SMALL OUTLINE, THIN PROFILE
Certification status	Not Qualified
surface mount	YES
Terminal surface	Tin/Lead (Sn/Pb)
Terminal form	GULL WING
Terminal pitch	0.95 mm
Terminal location	DUAL
Maximum voltage tolerance	2%

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8226

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 A8226SLM thru A8233SLM 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 A8226SLM

thru A8233SLM 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

27468.10

A82xxSLM

OUT

Dwg. PS-021-3

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

CONNECT

GND

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.,

A82xxSLM

, where “xx” is

the required output voltage in tenths.

A8231SLM Related Products

	A8231SLM	8226	A8228SLM	A8227SLM	A8232SLM	A8233SLM
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	LOW-DROPOUT REGULATORS . HIGH EFFICIENCY
Is it Rohs certified?	incompatible	-	incompatible	incompatible	incompatible	incompatible
Maker	Allegro	-	Allegro	Allegro	Allegro	Allegro
package instruction	TSOP, TSOP5/6,.11,37	-	PLASTIC, SC-74A, SOT-23, SO-5	LSSOP, TSOP5/6,.11,37	TSOP, TSOP5/6,.11,37	LSSOP, TSOP5/6,.11,37
Reach Compliance Code	unknow	-	unknow	unknow	unknow	unknow
Adjustability	FIXED	-	FIXED	FIXED	FIXED	FIXED
Nominal dropback voltage 1	0.13 V	-	0.13 V	0.13 V	0.13 V	0.13 V
Maximum absolute input voltage	7 V	-	7 V	7 V	7 V	7 V
JESD-30 code	R-PDSO-G5	-	R-PDSO-G5	R-PDSO-G5	R-PDSO-G5	R-PDSO-G5
JESD-609 code	e0	-	e0	e0	e0	e0
Maximum grid adjustment rate	0.01%	-	0.01%	0.01%	0.01%	0.01%
Maximum load regulation	0.02%	-	0.02%	0.02%	0.02%	0.02%
Output times	1	-	1	1	1	1
Number of terminals	5	-	5	5	5	5
Maximum operating temperature	85 °C	-	85 °C	85 °C	85 °C	85 °C
Minimum operating temperature	-20 °C	-	-20 °C	-20 °C	-20 °C	-20 °C
Maximum output current 1	0.05 A	-	0.1 A	0.1 A	0.05 A	0.1 A
Nominal output voltage 1	3.1 V	-	2.8 V	2.7 V	3.2 V	3.3 V
Package body material	PLASTIC/EPOXY	-	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY
encapsulated code	TSOP	-	LSSOP	LSSOP	TSOP	LSSOP
Encapsulate equivalent code	TSOP5/6,.11,37	-	TSOP5/6,.11,37	TSOP5/6,.11,37	TSOP5/6,.11,37	TSOP5/6,.11,37
Package shape	RECTANGULAR	-	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR
Package form	SMALL OUTLINE, THIN PROFILE	-	SMALL OUTLINE, LOW PROFILE, SHRINK PITCH	SMALL OUTLINE, LOW PROFILE, SHRINK PITCH	SMALL OUTLINE, THIN PROFILE	SMALL OUTLINE, LOW PROFILE, SHRINK PITCH
Certification status	Not Qualified	-	Not Qualified	Not Qualified	Not Qualified	Not Qualified
surface mount	YES	-	YES	YES	YES	YES
Terminal surface	Tin/Lead (Sn/Pb)	-	Tin/Lead (Sn/Pb)	Tin/Lead (Sn/Pb)	Tin/Lead (Sn/Pb)	Tin/Lead (Sn/Pb)
Terminal form	GULL WING	-	GULL WING	GULL WING	GULL WING	GULL WING
Terminal pitch	0.95 mm	-	0.95 mm	0.95 mm	0.95 mm	0.95 mm
Terminal location	DUAL	-	DUAL	DUAL	DUAL	DUAL
Maximum voltage tolerance	2%	-	2%	2%	2%	2%

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