8226IC贸易商引脚图技术参数全新原装-中国IC网-芯三七

8233 ^THRU

8226

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.

A82xxSLM

5

4

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.

VR

1

2

3

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.

Dwg. PS-021-3

FEATURES AND BENEFITS

I High Efficiency Provides Extended Battery Life

I 125 mV Typical Dropout Voltage at I_O= 50 mA

I 32 µA Typical Quiescent Current

Less Than 1 µA “Sleep” Current

ABSOLUTE MAXIMUM RATINGS

Input Voltage, V_I. . . . . . . . . . . . . . . 7 V

Peak Output Current,

I Low Output Noise

I_OM. . . . . . . . . . . . . . . . . . 100 mA*

Enable Input Voltage, V_E. . . . . . . . . . V_I

Operating Temperature Range,

I 100 mA Peak Output Current

I Improved PSRR and Transient Performance

T_A. . . . . . . . . . . . . -20°C to +85°C

Junction Temperature, T_J. . . . +150°C

Storage Temperature Range,

APPLICATIONS

I Cordless and Cellular Telephones

I Personal Data Assistants

I Personal Communicators

I Palmtop Computers

T_S. . . . . . . . . . . . -40°C to +150°C

* 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.

Always order by complete part number, e.g., A82xxSLM , where “xx” is

the required output voltage in tenths.

8226 THRU 8233

LOW-DROPOUT

REGULATORS

FUNCTIONAL BLOCK DIAGRAM

5

4

IN

OUT

DRIVE

BIAS

ERROR

AMP

1

ENABLE

BANDGAP

REF.

2

GND

Dwg. FS-012-5B

A82xxSLM 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.

Allowable Total Average (10 ms) Output Current in Milliamperes with T_J= 150°C, Duty Cycle = 100%†

V_I- V_O

T_A

1.5

100

2.0

100

2.5

100

3.0

100

98

3.5

100

84

4.0*

100

91

4.5*

100

81

25°C

50°C

70°C

85°C

74

66

* Absolute maximum peak output current rating is 100 mA; absolute maximum input voltage is 7 V.

† I_O= (T_J– T_A)/([V_I– V_O] R_θJAx dc) = (150 – T_A)/([V_I– V_O] 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

8226 THRU 8233

LOW-DROPOUT

REGULATORS

ELECTRICAL CHARACTERISTICS at T_A= +25°C, V_E≥ 2.0 V (unless otherwise noted).

Limits

Characteristic

Symbol

Test Conditions

Min.

-0.05

—

Typ.

Max.

+0.05

-0.25

—

Units

V

Output Voltage

V_O

4 V ≤ V_I≤ 7 V, 10 µA ≤ I_O≤ 50 mA*

V_I= V_O(nom), I_O= 50 mA

0.00

—

(reference specified V_O(nom)

)

V

Output Volt. Temp. Coeff.

Line Regulation

a_VO

V_I= 6 V, I_O= 10 mA, T_J≤ 125°C

4 V ≤ V_I≤ 7 V, I_O= 1 mA

—

-0.20

3.0

—

mV/°C

mV

µA

∆V_O(∆VI)

∆V_O(∆IO)

—

10

Load Regulation

1 mA ≤ I_O≤ 50 mA*, 4 V ≤ V_I≤ 7 V

—

20

Dropout Voltage

V_Imin - V_OI_O= 50 mA

I_GNDV_I< 7 V, I_O≤ 50 mA

I_Q

—

125

32

250

45

Ground Terminal Current

—

V_I≤ 7 V, V_E≤ 0.8 V, I_O= 0 mA

4 V ≤ V_I≤ 7 V, Output ON

4 V ≤ V_I≤ 7 V, Output OFF

V_E= V_I= 7 V

—

1.0

µA

ENABLE Input Voltage

V_EH

V_EL

I_E

2.0

—

V

—

0.8

V

ENABLE Input Current

Rejection Ratio

—

1.0

µA

PSRR

V_I= V_O(nom)+ 1.5 V, V_i= 100 mV, I_O= 10 mA,

f = 1 kHz

—

70

52

—

dB

f = 10 kHz

Output Noise

e_n

10 Hz ≤ f ≤ 100 kHz, I_O= 10 mA, C_O= 10 µF

—

0.5

—

µV/√Hz

Typical values are at T_A= +25°C and are given for circuit design information only.

* Pulse test (≤20 ms). See previous page for duty cycle limitations.

www.allegromicro.com

8226 THRU 8233

LOW-DROPOUT

REGULATORS

TYPICAL CHARACTERISTICS

LOAD REGULATION

LINE REGULATION

+0.06

+0.04

+0.02

+0.03

+0.02

+0.01

V

T

= -20°C

A

25 mA INTERVALS

I

= 0 mA

O

V

O(nom)

V = 4 V

O(nom)

I

= 50 mA

-0.02

-0.04

-0.06

-0.08

-0.01

O

V = 7 V

I

-0.02

-0.03

T

= -20°C

A

-0.04

20

OUTPUT CURRENT in mA

50

7.0

0

10

30

40

60

2.0

3.0

4.0

5.0

6.0

8.0

INPUT VOLTAGE in VOLTS

Dwg. GP-052-16

Dwg. GP-053-17

+0.06

+0.04

+0.02

+0.03

+0.02

+0.01

V

T

= 25°C

A

25 mA INTERVALS

I

= 0 mA

O

V = 7 V

I

V

O(nom)

I

= 50 mA

O

-0.02

-0.04

-0.06

-0.08

-0.01

V = 4 V

I

-0.02

-0.03

-0.04

T

= 25°C

A

50

0

10

20

30

40

60

7.0

2.0

3.0

4.0

5.0

6.0

8.0

OUTPUT CURRENT in mA

INPUT VOLTAGE in VOLTS

Dwg. GP-052-17

Dwg. GP-053-18

CAUTION:

Maximum allowable duty cycle will be significantly less than 100% at high temperatures, at high input voltages, or at

high output currents. See appropriate Maximum Allowable Output Current table.

115 Northeast Cutoff, Box 15036

Worcester, Massachusetts 01615-0036 (508) 853-5000

8226 THRU 8233

LOW-DROPOUT

REGULATORS

TYPICAL CHARACTERISTICS (cont’d)

LOAD REGULATION

LINE REGULATION

+0.03

+0.02

+0.01

+0.06

+0.04

+0.02

T

= 85°C

A

I

= 0 mA

O

V

O(nom)

V = 7 V

I

V = 6 V

I

= 60 mA

I

O

-0.01

-0.02

-0.03

-0.04

-0.02

-0.04

-0.06

-0.08

V = 4 V

I

T

= 85°C

A

7.0

2.0

3.0

4.0

5.0

6.0

8.0

50

0

10

20

30

40

60

INPUT VOLTAGE in VOLTS

OUTPUT CURRENT in mA

Dwg. GP-053-16

Dwg. GP-052-15

OUTPUT VOLTAGE

3.5

3.0

2.5

2.0

+0.02

V

O(nom)

+0.01

V

O(nom)

-0.01

-0.02

1.5

1.0

0.5

0

I

= 0 - 50 mA

O

V = 6 V

I

T

= 25°C

I

= 0

A

O

4.0

0

1.0

2.0

3.0

-50

0

+50

+100

INPUT VOLTAGE in VOLTS

AMBIENT TEMPERATURE in °C

Dwg. GP-050-4

Dwg. GP-059-3

CAUTION:

Maximum allowable duty cycle will be significantly less than 100% at high temperatures, at high input voltages, or at

high output currents. See appropriate Maximum Allowable Output Current table.

www.allegromicro.com

8226 THRU 8233

LOW-DROPOUT

REGULATORS

TYPICAL CHARACTERISTICS (cont’d)

GROUND TERMINAL/QUIESCENT CURRENT

60

T

= 25°C

A

40

50

V

I

= 6 V

= 0

I

= 50 mA

O

V

≥ 2 V

40

30

E

30

20

10

I

= 0

O

20

10

0

-2.0

V

+2.0

INPUT VOLTAGE in VOLTS

+4.0

+6.0

-50

0

+50

+100

O(nom)

AMBIENT TEMPERATURE in °C

Dwg. GP-058-2

Dwg. GP-051-4

DROPOUT VOLTAGE

50

45

40

35

30

0.25

0.20

T = 25°C

≥ VO(nom) + 0.30 V

A

VI

T

= 85°C

= 25°C

= -20°C

A

T

A

T

A

0.15

0.10

0.05

0

25

20

0

10

20

30

40

50

60

0

20

40

60

OUTPUT CURRENT in mA

Dwg. GP-071

Dwg. GP-054-3

CAUTION:

Maximum allowable duty cycle will be significantly less than 100% at high temperatures, at high input voltages, or at

high output currents. See appropriate Maximum Allowable Output Current table.

115 Northeast Cutoff, Box 15036

Worcester, Massachusetts 01615-0036 (508) 853-5000

8226 THRU 8233

LOW-DROPOUT

REGULATORS

TYPICAL CHARACTERISTICS (concluded)

LOAD TRANSIENT PERFORMANCE

V_I= 3.2 V to 6.2 V, C_O= 4.7 µF, T_A= 25°C

ENABLE TRANSIENT PERFORMANCE

V_I= 3.2 V to 6.2 V, C_O= 1 µF, T_A= 25°C

+30 mV

V

O(nom)

V

O(nom)

-30 mV

V

2 µs

O

0

<100 µs

<150 µs

V

I

50 mA

V

E

I

O

0

1 mA

Dwg. WP-027-3

Dwg. WP-028-3

APPLICATIONS INFORMATION

Linear regulators require input and output capacitors in order to

maintain over-all loop stability. The recommended minimum

value for the input capacitor is 0.1 µF. The output capacitor is

the dominant pole that provides the high-frequency compensa-

tion required for over-all regulator loop stability. These devices

are stable with as little as 1 µF. However, to ensure stable

operation under all conditions and capacitor types, the recom-

mended minimum value is 4.7 µF. The output capacitor may be

partially distributed through the load circuits. However, at least

1 µF should be connected at the regulator using the shortest and

widest foil pattern possible.

The products described here are manufactured under one or more

U.S. patents or U.S. patents pending.

Allegro MicroSystems, Inc. reserves the right to make, from time to

time, such departures from the detail specifications as may be required

to permit improvements in the performance, reliability, or

manufacturability of its products. Before placing an order, the user is

cautioned to verify that the information being relied upon is current.

Thermal Considerations

These devices are intended to provide up to 100 mA of load

current in a very small package. The table on page 2 of this data

sheet gives the maximum allowable average output current for a

worst-case printed circuit design (R_θJA= 220°C/W with a

minimum footprint). Performance improvement is easily

accomplished with the addition of 1 square inch of copper at

terminal 2 (R_θJA= 170°C/W).

Allegro products are not authorized for use as critical components

in life-support devices or systems without express written approval.

The information included herein is believed to be accurate and

reliable. However, Allegro MicroSystems, Inc. assumes no responsi-

bility for its use; nor for any infringement of patents or other rights of

third parties which may result from its use.

www.allegromicro.com

8226 THRU 8233

LOW-DROPOUT

REGULATORS

Dimensions in Inches

(for reference only)

0.122

0.107

0.051

0.040

0.019

0.012

0.0063

5

1

4

3

0.070

0.059

0.118

0.098

2

0.028

0.095

5

1

4

3

0.039

0° TO 10°

0.0374

BSC

2

0.0748

BSC

0.0059

0.0000

0.037

Dwg. MA-010-5 in

Dwg. MA-011-5 in

Dimensions in Millimeters

(controlling dimensions)

3.10

2.70

1.30

1.00

0.50

0.30

0.16

5

1

4

3

1.80

1.50

3.00

2.50

2

0.70

2.40

5

1

4

3

1.00

0° TO 10°

0.95

BSC

2

1.90

BSC

0.15

0.00

0.95

Dwg. MA-011-5 mm

Dwg. MA-010-5 mm

NOTE: Exact body and lead configuration at vendor’s option within limits shown.

115 Northeast Cutoff, Box 15036

Worcester, Massachusetts 01615-0036 (508) 853-5000

型号:	822628771000
是否Rohs认证：	符合
生命周期：	Active
IHS 制造商：	BELDEN INC
Reach Compliance Code：	compliant
风险等级：	5.57
连接器支架类型：	WIRE AND CABLE
Base Number Matches：	1

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