a8740 Allegro MicroSystems, Inc., a8740 Datasheet - Page 2

• Manufacturer Part Number: a8740
• Description: Ultra Small Mobile Phone Xenon Photoflash Capacitor Charger With Igbt Driver
• Manufacturer: Allegro MicroSystems, Inc.

A8740
Selection Guide
Absolute Maximum Ratings
THERMAL CHARACTERISTICS may require derating at maximum conditions
Package Thermal Resistance
*Additional thermal information available on Allegro Web site.
SW Pin
VIN_DRV, VBAT Pins
CHARGE, TRIG, ¯ D ¯ ¯ O ¯ ¯ N ¯ ¯ E ¯ Pins
Remaining Pins
Operating Ambient Temperature
Maximum Junction
Storage Temperature
A8740EEETR-T
Part Number
Characteristic
Characteristic
3000 pieces per reel
Symbol
Symbol
T
J
R
Packing
V
(max)
I
V
T
T
SW
θJA
SW
stg
IN
A
4-layer PCB, based on JEDEC standard
DC voltage.
(V
and is allowed to exceed 50 V during flyback
spike durations. Maximum repetitive energy
during flyback spike: 0.5 μJ at frequency
≤ 400 kHz.)
DC current, pulse width = 1 ms
Care should be taken to limit the current when
–0.6 V is applied to these pins.
Range E
Ultra Small Mobile Phone Xenon Photoflash
SW
is self-clamped by internal active clamp
8-contact DFN/MLP with exposed thermal pad
Capacitor Charger with IGBT Driver
Notes
Test Conditions*
Package
–0.6 to V
–0.3 to V
–0.3 to 6.0
–55 to 150
–0.3 to 50
–40 to 85
Rating
115 Northeast Cutoff
1.508.853.5000; www.allegromicro.com
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 U.S.A.
150
3
IN
IN
+ 0.3 V
+ 0.3 V
Value Units
49
Units
ºC
ºC
ºC
V
A
V
V
V
ºC/W
2