KA7553A 查看數據表（PDF） - Fairchild Semiconductor

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产品描述 (功能)

生产厂家

KA7553A

SMPS Controller

Fairchild Semiconductor 

KA7552A/KA7553A

Electrical Characteristics (Continued)

(VCC = 18V, FOSC = 135kHz, TA = 25°C, unless otherwise specified)

Parameter

Symbol

UNDER VOLTAGE LOCKOUT SECTION

Start-up threshold voltage

VTH(ST)

Minimum operating voltage

VOPR(Min)

Hysteresis

VHYS

ON/OFF CONTROL SECTION

Source current(pin8)

ISOURCE(CS)

On threshold voltage

VTH(ON)

Off threshold voltage

VTH(OFF)

OUTPUT SECTION

Low output voltage

VOL

High output voltage

Rise time(Note1)

Fall time(Note1)

VOH

TR

TF

OVERALL

Stand-by current

ISB

Operating current

ICC(OPR)

Power supply current off

ICC(OFF)

Power supply current shutdown

ICC(SD)

Conditions

-

-

-

VPIN8 = 0V

VPIN8 : OFF->ON

VPIN8 : ON -> OFF

IO = 100mA, VCC = 18V

IO = -100mA, VCC = 18V

No load

No load

VCC = 14V

VPIN2 = 0V

VPIN8 = 0V

VPIN8 = 7.6V

Min. Typ. Max. Unit

15.5 16.0 16.5 V

8.20 8.70 9.20 V

6.40 7.30 8.20 V

-15 -10 -5 uA

0.45 0.56 0.70 V

0.30 0.42 0.55 V

- 1.3 1.8 V

16.0 16.5 18.0 V

-

50

-

ns

-

50

-

ns

- 90 150 uA

-

9 15 mA

- 1.1 1.8 mA

- 1.1 1.8 mA

Note :

1. These parameters, although guaranteed, are not 100% tested in production.

2. Recommend operating condition :

- Vcc(min) = 12V

- RT = 3.3kΩ ~ 10kΩ

- Oscillation frequency = 5kHz ~ 600kHz

- Soft start capacitor(CS) = 0.1uF ~ 1uF

3

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