AP1122

1A LOW DROPOUT POSITIVE REGULATOR

AP1122

Document number: DS31012 Rev. 9 - 2

3 of 11

www.diodes.com

May 2010

© Diodes Incorporated

Absolute Maximum Ratings

Symbol

Parameter

Rating

Unit

DC Supply Voltage

-0.3 to 12

V

Storage Temperature

-65 to +150

Maximum Junction Temperature

150

Recommended Operating Conditions

Symbol

Parameter

Min

Max

Unit

Output Current

-

1.0

A

Operating Junction Temperature Range

0

125

Parameter

Test Conditions

Min

Typ.

Max

Unit

Output Voltage

1.176

1.2

1.224

V

Line Regulation

0.2

%

Load Regulation

1

%

Dropout Voltage

1.3

V

Current Limit

1. 1

A

Minimum Load Current

(Note 4)

0

5

10

mA

Thermal Regulation

0.008

0.04

%/W

Ripple Rejection

60

70

dB

Temperature Stability

0.5

%

θ

Junction-to-Ambient

SOT89-3L: Control Circuitry/Power Transistor (Note 5)

SOT223-3L: Control Circuitry/Power Transistor (Note 6)

TO252-3L: Control Circuitry/Power Transistor (Note 5)

TO220-3L: Control Circuitry/Power Transistor (Note 5)

TO263-3L: Control Circuitry/Power Transistor (Note 5)

182

107

73

78

60

θ

Junction-to-Case

SOT89-3L: Control Circuitry/Power Transistor (Note 5)

SOT223-3L: Control Circuitry/Power Transistor (Note 6)

TO252-3L: Control Circuitry/Power Transistor (Note 5)

TO220-3L: Control Circuitry/Power Transistor (Note 5)

TO263-3L: Control Circuitry/Power Transistor (Note 5)

42

16

12

3.5

3.5

Notes:

2. See thermal regulation specifications for changes in output voltage due to heating effects. Line and load regulation are

measured at a constant junction temperature by low duty cycle pulse testing. Load regulation is measured at the output lead

= 1/18” from the package.

3. Line and load regulation are guaranteed up to the maximum power dissipation of 15W. Power dissipation is determined by the

difference between input and output differential and the output current. Guaranteed maximum power dissipation will not be

available over the full input/output range.

4. Quiescent current is defined as the minimum output current required in maintaining regulation. At 12V input/output differential

the device is guaranteed to regulate if the output current is greater than 10mA.

5. Test conditions for SOT89-3L, TO252-3L, TO220-3L, and TO263-3L: Devices mounted on FR-4 substrate, single sided PC

board, 2oz copper, with minimum recommended pad layout, no air flow.

6. Test condition for SOT223-3L: Device mounted on FR-4 substrate, single sided PC board, 2oz copper, with 5mmX5mm thermal

pad layout, no air flow.