AT1454/AT1454A/AT1454B
Preliminary Product Information
Photoflash Capacitor Charger for DSC
Electrical Characteristics
(VCC=3.3V, Ta=+25℃, unless otherwise noted)
Parameter
Symbol
Test Condition
Min. Typ. Max. Units
Input operating voltage
VCC
―
2.5
―
―
5.5
―
―
V
V
Input under-voltage threshold VUVLO VCC falling
VCC UVLO hysteresis
2.1
100
mV
V
Feedback voltage
Shutdown current
Quiescent Current
VFB
IOFF
Icc
Ta=+25℃
1.08 1.10 1.12
CHARGE pin=GND
No Switching , FB=1.2V
―
0.01
40
1
µA
µA
A
―
―
―
―
―
―
―
―
―
60
―
―
―
6
Primary side current limit
Secondary side transit current Isec
ILX(MAX)
2.5
5
mA
Ω
LX Switch On-Resistance
LX Leakage Current
RLX(ON) ILX=2A
0.17
0.01
55
ILC
VLX=28V
µA
ns
VCC=3.3V, CL=3900pF
VCC=3.3V, CL=8200pF
VCC=3.3V, CL=3900pF
VCC=3.3V, CL=8200pF
―
―
―
―
IGBT Driver Rising time
tr
90
ns
55
ns
IGBT Driver Falling time
IGBT Trigger signal high
tf
90
ns
0.45Vc
c
―
―
V
IGBT Trigger signal low
Charge input voltage high
Charge input voltage low
Charge pin Bias current
―
0.9
―
―
―
―
―
3
0.3Vcc
―
V
V
VON
0.1V hysteresis
VCHARGE =3.3V
VOFF
0.8
V
―
µA
Ready output signal high
100kΩ from Vcc to Ready
pin
33µA into Ready pin
―
―
3.27
V
Ready output signal low
Thermal Shutdown
―
―
1.0
0
mV
―
140
℃
7F, No.9,PARK AVENUE. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878
3/24/2006 REV:1.2
Fax: 886-3-563-0879
WWW: http://www.aimtron.com.tw
Email: service@aimtron.com.tw
4
AIMTRON [ AIMTRON TECHNOLOGY ]
