FSCQ0765RT 데이터 시트보기 (PDF) - Fairchild Semiconductor

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FSCQ0765RT

Green Mode Fairchild Power Switch (FPS™)

Fairchild Semiconductor 

Electrical Characteristics (Continued)

(TA = 25°C unless otherwise specified)

Parameter

Symbol

Condition

Control Section

Switching Frequency

Switching Frequency Variation7

Feedback Source Current

Maximum Duty Cycle

Minimum Duty Cycle

UVLO Threshold Voltage

Soft Start Time6

Burst Mode Section

FOSC

∆FOSC

IFB

DMAX

DMIN

VSTART

VSTOP

TSS

VFB = 5V, VCC = 18V

-25°C ≤ TA ≤ 85°C

VFB = 0.8V, VCC = 18V

VFB = 5V, VCC = 18V

VFB = 0V, VCC = 18V

VFB = 1V

Burst Mode Enable Feedback Voltage

Burst Mode Feedback Source Current

Burst Mode Switching Time

Burst Mode Hold Time

Protection Section

VBEN

IBFB

TBS

TBH

VFB = 0V

VFB = 0.9V, Duty = 50%

VFB = 0.9V → 0V

Shutdown Feedback Voltage

Shutdown Delay Current

Over Voltage Protection

Over Current Latch Voltage6

Thermal Shutdown Temp7

VSD

IDELAY

VOVP

VOCL

TSD

VCC = 18V

VFB = 5V, VCC = 18V

VFB = 3V

VCC = 18V

Notes:

6. These parameters, although guaranteed, are tested only in EDS (wafer test) process.

7. These parameters, although guaranteed at the design, are not tested in mass production.

Min. Typ. Max. Unit

18 20 22 kHz

0 ±5 ±10 %

0.5 0.65 0.8 mA

92 95 98 %

–

0

–

%

14 15 16 V

8

9 10

18 20 22 ms

0.25 0.40 0.55 V

60 100 140 µA

1.2 1.4 1.6 ms

1.2 1.4 1.6 ms

7.0 7.5 8.0 V

4

5

6 µA

11 12 13 V

0.9 1.0 1.1 V

140 –

– °C

8

FSCQ-Series Rev. 1.1.2

www.fairchildsemi.com

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