AT1454B 데이터 시트보기 (PDF) - Unspecified

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AT1454B

Preliminary Product Information Photoflash Capacitor Charger for DSC

Unspecified 

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

VUVLO VCC falling

VFB Ta=+25℃

IOFF 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

ILX(MAX)

Isec

― 2.5 ― A

― 5 ― mA

RLX(ON) ILX=2A

― 0.17 ― Ω

ILC

VLX=28V

― 0.01 6 µA

VCC=3.3V, CL=3900pF

― 55 ― ns

tr

VCC=3.3V, CL=8200pF

― 90 ― ns

VCC=3.3V, CL=3900pF

― 55 ― ns

tf

VCC=3.3V, CL=8200pF

― 90 ― ns

0.45Vc

c

―

―

V

― ― 0.3Vcc V

VON 0.1V hysteresis

0.9 ― ― V

VOFF

― ― 0.8 V

VCHARGE =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: 886-3-563-0878 Fax: 886-3-563-0879

WWW: http://www.aimtron.com.tw

3/24/2006 REV:1.2

Email: service@aimtron.com.tw

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