A8438 Photoflash Capacitor Charger with IGBT Driver
Performance Characteristics
Tests performed using application circuit shown in figure 6 (unless otherwise noted)
Charging Waveforms: 140 μF photoflash capacitor
Symbol Parameter Units/Division
C1
VOUT
50 V
C4
IBATT(Avg)
200 mA
t
time
1s
Conditions Parameter
Value
VBATT
2.0 V
VBIAS
3.3 V
C4
IAVG
770 mA
ILIM
1.8 A
COUT
140 μF
C1
VOUT
IBATT
t
Symbol Parameter Units/Division
C1
VOUT
50 V
C4
IBATT(Avg)
200 mA
t
time
1s
Conditions Parameter
Value
VBATT
2.0 V
VBIAS
3.3 V
IAVG
820 mA
ILIM
2.0 A
C4
COUT
140 μF
C1
VOUT
IBATT
t
A8438-DS, Rev. 1
Allegro MicroSystems, Inc.
6
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com