Wide Input Voltage, 2.4 MHz, 3.0 AAsynchronous Buck Regulator With
Low-IQ Standby, Sleep Mode, External Synchronization, and NPOR Output
A8590
SPECIFICATIONS
Absolute Maximum Ratings*
Characteristic
Symbol
Notes
Rating
–0.3 to 40
Unit
V
VIN, SLEEP, SS Pin Voltage
Continuous (minimum limit is a function of temperature)
–0.3 to VIN + 0.3
–1.0 to VIN + 0.3
VSW – 0.3 to VSW + 5.5
V
SW Pin Voltage
BOOT Pin Voltage
BIAS Pin Voltage
VSW
VBOOT
VBIAS
t < 50 ns
V
Continuous
V
BOOT OV Fault Condition
Continuous
V
SW – 0.3 to VSW + 7.0
–0.3 to 5.5
–0.3 to 6
V
V
BIAS OV Fault Condition
V
All Other Pin Voltages
–0.3 to 5.5
–40 to 125
150
V
Operating Ambient Temperature
Maximum Junction Temperature
Storage Temperature
TA
TJ(max)
Tstg
K Temperature Range
ºC
ºC
ºC
–55 to 150
*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
RqJA
On 4-layer PCB based on JEDEC standard
34
ºC/W
*Additional thermal information available on the Allegro website.
Allegro MicroSystems, LLC
115 Northeast Cutoff
3
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com