PACKAGE REFERENCE

BS

IN

SW

GND

SS

EN

COMP

FB

1

2

3

4

8

7

6

5

TOP VIEW

Part Number

Package

Temperature

AMS1069

SO

P8

–40° to +85°C

Shutdown Supply Current

1

3.0

µA

Supply Current

1.3

1.5

mA

Feedback Voltage

4.75V

0.

885

0.9

05

0.9

25

V

Feedback Overvoltage Threshold

1.1

V

Error Amplifier Voltage Gain

400

V/V

High-Side Switch On Resistance

-

mΩ

High-Side Switch Leakage Current

10

µA

Lower Switch Current Limit

From Drain to Source

1.

0

A

COMP to Current Sense

Transconductance

3.5

A/V

Oscillation Frequency

3

80

KHz

Short Circuit Oscillation Frequency

100

KHz

Maximum Duty Cycle

90

%

Minimum On Time

220

ns

EN Shutdown Threshold Voltage

1.1

1.5

2.0

V

EN Shutdown Threshold Voltage

Hysteresis

210

mV

EN Lockout Threshold Voltage

2.2

2.5

2.7

V

EN Lockout Hysterisis

210

mV

ABSOLUTE MAXIMUM RATINGS

All Other Pins................................. –0.3V to +6V

Junction Temperature...............................150°C

Lead Temperature ....................................260°C

Storage Temperature .............–65°C to +150°C

Recommended Operating Conditions

(2)

Ambient Operating Temperature .... –40°C to +85°C

ELECTRICAL CHARACTERISTICS

Parameter

Symbol Condition

Min

Typ

Max

Units

Error Amplifier Transconductance

700

µA/V

Low-Side Switch On Resistance

-

mΩ

Upper Switch Current Limit

Minimum Duty Cycle

3.

2

A

Advanced Monolithic Systems http://www.ams-semitech.com

2

AMS1069