Alpha Semiconductor Inc. 1031 Serpentine Lane. Pleasanton, CA 94568 Tel: (925) 417-1391 Fax: (925) 417-1390

Rev. 9/14/99

AS1117

ABSOLUTE MAXIMUM RATINGS

Power Dissipation.......................................Internally Limited

Input Supply Voltage.................................... -20V to +20V

Lead Temp. (Soldering, 5 Seconds) .............................. 260°C

ESD Rating .........................................................2KV Min

Storage Temperature Range .......................... -65° to +150°C

Operating Junction Temperature Range

AS1117 ................................................-40C° to +125°C

µf, unless otherwise specified. Limits in

Boldface apply over the full operating temperature range.

Parameter

Conditions

Typ

AS1117

Min

Max

Units

1.5V Version

Output Voltage

0

≤I

OUT

≤800mA, 4.25≤V

IN

≤10V

1.500

1.485

1.470

1.515

1.530

V

2.5V Version

Output Voltage

0

≤I

OUT

≤800mA, 4.25≤V

IN

≤10V

2.500

2.475

2.450

2.525

2.550

V

2.85V Version

Output Voltage

0

≤I

OUT

≤800mA, 4.25≤V

IN

≤10V

2.850

2.822

2.793

2.879

2.907

V

3.0V Version

Output Voltage

0

≤I

OUT

≤800mA, 4.75≤V

IN

≤10V

3.000

2.970

2.940

3.030

3.060

V

3.3V Version

Output Voltage

0

≤I

OUT

≤800mA, 4.75≤V

IN

≤10V

3.300

3.267

3.234

3.333

3.366

V

5.0V Version

Output Voltage

0

≤I

OUT

≤800mA, 6.50≤V

IN

≤12V

5.000

4.950

4.900

5.050

5.100

V

All Output Options

Reference Voltage

10

≤ I

OUT

≤800mA, 1.4≤(V

≤10V

1.250

1.238

1.225

1.262

1.270

V

Output Voltage

Temperature Stability

(Note 1)

0.05

%

Line Regulation

4.25V

≤V

IN

≤10V, V

4.50V

≤V

IN

≤12V, V

4.80V

≤V

IN

≤12V, V

6.50V

≤V

IN

≤15V, V

1.00

1.00

1.00

1.00

6.00

7.00

7.00

10.00

mV

Load Regulation

0

≤I

OUT

≤800mA, V

0

≤I

OUT

≤800mA, V

0

≤I

OUT

≤800mA, V

0

≤I

OUT

≤800mA, V

1.00

1.00

1.00

1.00

10.00

12.00

12.00

15.00

mV

Dropout Voltage

( Note 2)

1.00

1.05

1.10

1.10

1.15

1.20

V

Quiescent Current

4.25V

≤V

IN

≤6.5V

5.00

10.00

mA

Current Limit

1000

1200

mA

Thermal Regulation

25

°C,30mS Pulse

0.01

0.1

%/W

Ripple Rejection

60

75

dB

Long Term Stability

125°C, 1000Hrs

0.03

%

RMS Output Noise

≤f≤10kHz

0.003

%

Thermal Resistance

Junction to case, at tab

15

°C/W

°

Note 1: Output temperature coefficient is defined as the worst case voltage change divided by the total temperature range

Note 2: Dropout voltage is defined as the input to output differential at which the output voltage drops 100mV below its nominal value measured at 1V differential at very low values of programmed

output voltage, the minimum input supply voltage of 2V ( 2.3V over temperature) must be taken into account.

Note 3: Thermal regulation is defined as the change in output voltage at a time T after a change in power dissipation is applied. excluding load or line regulation effect.