Wide Input Voltage, 2.4 MHz, 3.0 AAsynchronous Buck Regulator With

Low-IQ Standby, Sleep Mode, External Synchronization, and NPOR Output

A8590

3

Allegro MicroSystems, LLC

115 Northeast Cutoff

Worcester, Massachusetts 01615-0036 U.S.A.

1.508.853.5000; www.allegromicro.com

Absolute Maximum Ratings*

Characteristic

Symbol

Notes

Rating

Unit

VIN, SLEEP, SS Pin Voltage

–0.3 to 40

V

SW Pin Voltage

Continuous (minimum limit is a function of temperature)

V

t < 50 ns

V

BOOT Pin Voltage

Continuous

V

BOOT OV Fault Condition

V

BIAS Pin Voltage

Continuous

–0.3 to 5.5

V

BIAS OV Fault Condition

–0.3 to 6

V

All Other Pin Voltages

–0.3 to 5.5

V

Operating Ambient Temperature

K Temperature Range

–40 to 125

ºC

Maximum Junction Temperature

150

ºC

Storage Temperature

–55 to 150

ºC

*Operation at levels beyond the ratings listed in this table may cause permanent damage to the device. The Absolute Maximum ratingsare stress ratings only, and functional

operation of the device at these or any other conditions beyond those indicated in the Electrical Characteristics table is not implied. Exposure to Absolute Maximum-rated

conditions for extended periods may affect device reliability.

Thermal Characteristics

(may require derating at maximum conditions, see application information)

Characteristic

Symbol

Test Conditions*

Value

Unit

Package Thermal Resistance

On 4-layer PCB based on JEDEC standard

34

ºC/W

*Additional thermal information available on the Allegro website.

SPECIFICATIONS