AT1454 Datasheet, PDF (4/18 Pages) Aimtron Technology – Photoflash Capacitor Charger for DSC

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
Input under-voltage threshold
VCC UVLO hysteresis
Feedback voltage
Shutdown current
Quiescent Current
VCC
V_UVLO VCC falling
V_FB Ta=+25℃
I_OFF CHARGE pin=GND
Icc No Switching , FB=1.2V
2.5 ― 5.5 V
― 2.1 ― V
― 100 ― mV
1.08 1.10 1.12 V
― 0.01 1 µA
― 40 60 µA
Primary side current limit
Secondary side transit current
LX Switch On-Resistance
LX Leakage Current
IGBT Driver Rising time
IGBT Driver Falling time
IGBT Trigger signal high
IGBT Trigger signal low
Charge input voltage high
Charge input voltage low
Charge pin Bias current
Ready output signal high
Ready output signal low
I_LX(MAX)
Isec
― 2.5 ― A
― 5 ― mA
R_LX(ON) I_LX=2A
― 0.17 ― _Ω
I_LC
V_LX=28V
― 0.01 6 µA
VCC=3.3V, C_L=3900pF
― 55 ― ns
tr
VCC=3.3V, C_L=8200pF
― 90 ― ns
VCC=3.3V, C_L=3900pF
― 55 ― ns
tf
VCC=3.3V, C_L=8200pF
― 90 ― ns
0.45Vc
c
―
―
V
― ― 0.3Vcc V
V_ON 0.1V hysteresis
0.9 ― ― V
V_OFF
― ― 0.8 V
V_CHARGE =3.3V
― 3 ― µA
100kΩ from Vcc to Ready
pin
―
3.27
―
V
33µA into Ready pin
― 1.0 0 mV
Thermal Shutdown
― 140 ― ℃
7F, No.9,PARK AVENUE. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: [phone] Fax: [phone]
WWW: http://www.aimtron.com.tw
3/24/2006 REV:1.2
Email: [e-mail]
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