HIGH EFFICIENCY. 8220 Datasheet

8220 Datasheet PDF, Equivalent


Part Number

8220

Description

LOW-DROPOUT REGULATORS . HIGH EFFICIENCY

Manufacture

Allegro MicroSystems

Total Page 8 Pages
PDF Download
Download 8220 Datasheet PDF


8220 Datasheet
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-
A82xxSLH
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
54
DUCT YVR
PRO ONL1 2
3
INUED ENCEDwg.PS-021-4
ONT EFERABSOLUTE MAXIMUM RATINGS
C RInput Voltage, VI . . . . . . . . . . . . . . . 7 V
Peak Output Current,
IS RIOM . . . . . . . . . . . . . . . . . . 100 mA*
Enable Input Voltage, VE . . . . . . . . . . VI
D FOOperating Temperature Range,
(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.
FEATURES AND BENEFITS
I High Efficiency Provides Extended Battery Life
I 125 mV Typical Dropout Voltage at IO = 50 mA
I 32 µA Typical Quiescent Current
Less Than 1 µA “Sleep” Current
I Low Output Noise
I 100 mA Peak Output Current
I Improved PSRR and Transient Performance
TA . . . . . . . . . . . . . -20°C to +85°C
Junction Temperature, TJ . . . . +150°C
Storage Temperature Range,
TS . . . . . . . . . . . . -40°C to +150°C
* Output current rating is limited by input
voltage, duty cycle, and ambient temperature.
APPLICATIONS
I Cordless and Cellular Telephones
I Personal Data Assistants
I Personal Communicators
I Palmtop Computers
Under any set of conditions, do not exceed a
junction temperature of +150°C. See follow-
Always order by complete part number, e.g., A82xxSLH , where “xx” is
ing pages.
the required output voltage in tenths.

8220 Datasheet
8220 THRU 8233
LOW-DROPOUT
REGULATORS
IN 3
FUNCTIONAL BLOCK DIAGRAM
4 OUT
ENABLE 1
BIAS
2 GND
DRIVE
ERROR
AMP
BANDGAP
REF.
Dwg. FS-012-9
A82xxSLH Maximum Allowable Average Output Current* with device mounted on 2.24" x 2.24"
(56.9 mm x 56.9 mm) solder-coated copper-clad board in still air.
TA
25°C
Allowable Total Average (10 ms) Output Current in Milliamperes with TJ = 150°C, Duty Cycle = 100%†
VI - VO
1.5 2.0 2.5 3.0 3.5 4.0* 4.5*
100 100 100 100 100 100 100
50°C 100 100 100 100 100 100 100
70°C 100 100 100 100 100
91
81
85°C 100 100 100
98
84
74
66
* Absolute maximum peak output current rating is 100 mA; absolute maximum input voltage is 7 V.
† IO = (TJ – TA)/([VI – VO] RθJA x dc) = (150 – TA)/([VI – VO] x 220 x 1.00)
Output current rating can be increased (to 100 mA maximum) by additional heat sinking or reducing the duty cycle.
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
Copyright © 2000, Allegro MicroSystems, Inc.


Features Datasheet pdf 8220 THRU 8233 PRELIMINARY INFORMATION ( subject to change without notice) Janua ry 18, 2000 LOW-DROPOUT REGULATORS — HIGH EFFICIENCY Designed specifically to meet the requirement for extended op eration of battery-powered equipment su ch as cordless and cellular telephones, the A8220SLH thru A8233SLH voltage reg ulators offer the reduced dropout volta ge and quiescent current essential for maximum battery life. Applicable also t o palmtop computers and personal data a ssistants, these devices deliver a regu lated output at up to 100 mA (transient ), which is limited only by package pow er dissipation. Regulated output voltag es of 2.6, 2.7, 2.8, 2.9, 3.0 and 3.3 a re currently provided. Other voltages, down to 2.0 volts, are available on spe cial order. A PMOS pass element provide s a typical dropout voltage of only 125 mV at 50 mA of load current. The low d ropout voltage permits deeper battery d ischarge before output regulation is lo st. Quiescent current does not increase significantly as the drop.
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