AAT1157

1MHz 1.2A Buck DC/DC Converter

1157.2005.11.1.4

3

Absolute Maximum Ratings

1

Thermal Characteristics

Recommended Operating Conditions

Symbol

Description

Value

Units

T

Ambient Temperature Range

-40 to 85

°C

Symbol

Description

Value

Units

θ

JA

Maximum Thermal Resistance (QFN33-16)

3

50

°C/W

θ

JC

Maximum Thermal Resistance (QFN33-16)

4.2

°C/W

P

D

Maximum Power Dissipation (QFN33-16) (T

3, 4

2.0

W

Symbol

Description

Value

Units

V

V

6

V

V

LX

LX to GND

-0.3 to V

V

V

FB

FB to GND

-0.3 to V

V

V

EN

EN to GND

-0.3 to -6

V

T

J

Operating Junction Temperature Range

-40 to150

°C

V

ESD

ESD Rating

3000

V

1. Stresses above those listed in Absolute Maximum Ratings may cause damage to the device. Functional operation at conditions other

than the operating conditions specified is not implied. Only one Absolute Maximum Rating should be applied at any one time.

2. Human body model is 100pF capacitor discharged through a 1.5k

Ω resistor into each pin.

3. Mounted on a demo board (FR4, in still air). Exposed pad must be mounted to PCB.

4. Derate 20mW/°C above 25°C.