Full Bridge MOSFET Driver
A4957
2
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
Load Supply Voltage V
BB
–0.3 to 50 V
Logic Supply Voltage V
DD
–0.3 to 7 V
Logic Inputs V
I
–0.3 to 6.5 V
Logic Outputs V
O
–0.3 to 6.5 V
Pin VREG V
VREG
–0.3 to 16 V
Pins CP1, CP2 V
CPX
–0.3 to 16 V
Pin RDEAD V
RDEAD
–0.3 to 6.5 V
Pins SA, SB V
SX
–5 to 55 V
Pins GHA, GHB V
GHX
V
SX
to V
SX
+ 15 V
Pins GLA, GLB V
GLX
–5 to 16 V
Pins CA, CB V
CX
–0.3 to V
SX
+15 V
ESD Rating, Human Body Model AEC Q100-002, all pins 2000 V
ESD Rating, Charged Device Model AEC Q100-011, all pins 1000 V
Ambient Operating Temperature
Range
T
A
Range S –20 to 85 °C
Continuous Junction Temperature T
J
(max) 150 °C
Transient Junction Temperature T
Jt
Overtemperature event not exceeding
10 s, lifetime duration not exceeding 10 hr,
guaranteed by design characterization
175 °C
Storage Temperature Range T
stg
–55 to 150 °C
*With respect to ground
Selection Guide
Part Number Packing
A4957SESTR-T 1500 pieces per reel
Thermal Characteristics may require derating at maximum conditions, see application information
Characteristic Symbol Test Conditions* Value Unit
Package Thermal Resistance, Junc-
tion to Ambient
R
θJA
Estimated, on 4-layer PCB based on JEDEC standard 37 ºC/W
Package Thermal Resistance, Junc-
tion to Pad
R
θJP
2 ºC/W
*Additional thermal information available on the Allegro website
