FSL127H View Datasheet(PDF) - Fairchild Semiconductor

Part Name

Description

View to exact match

FSL127H

Green Mode Fairchild Power Switch (FPS™)

Fairchild Semiconductor 

Electrical Characteristics (Continued)

VDD=15V and TA=25°C unless otherwise specified.

Symbol

Parameter

VIN Section

VIN-ON PWM Turn-on Threshold Voltage

VIN-RL Release Latch Voltage

VIN-H

Pull HIGH Latch Trigger Level

tIN-H

Pull HIGH Latch Debounce Time

VIN-L

Pull LOW Auto Recovery Trigger Level

Feedback Input Section

AV

FB Voltage to Current-Sense Attenuation

ZFB

Input Impedance

VFB-OPEN Output High Voltage

VFB-OLP FB Open-Loop Trigger Level

tD-OLP

Delay Time of FB Pin Open-loop

Protection

VFB-N Green-Mode Entry FB Voltage

VFB-G Green-Mode Ending FB Voltage

VFB-ZDC Zero Duty Cycle FB Voltage

PWM Frequency

Conditions

fOSC

Min. Typ. Max. Unit

0.98 1.03 1.08

V

0.60 0.70 0.80

V

4.4

4.7

5.0

V

120

µs

0.2

0.3

0.4

V

1/4.0

V/V

9.5

kΩ

5

V

4.4

4.6

4.8

V

50

56

59

ms

2.3

2.5

2.7

V

VFB-N -

0.1

V

1.9

2.1

2.3

V

fOSC-G

VFB-ZDC VFB-G

VFB-N

VFB

Figure 4. VFB vs. PWM Frequency

Symbol

Parameter

Conditions Min.

Current-Sense Section

ILIM at VIN = 1.2V Peak Current Limit

VIN = 1.2V

0.51

ILIM at VIN = 3.6V Peak Current Limit

tSS

Period During Soft-Start Time(11)

VIN = 3.6V

0.44

4.5

Over-Temperature Protection Section (OTP)

TOTP

Protection Junction Temperature(11,13)

Notes:

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

12. Pulse test: pulse width ≤ 300μs, duty ≤ 2%.

13. When activated, the output is disabled and the latch is turned off.

Typ. Max. Unit

0.61 0.71

A

0.54 0.64

A

5.0

5.5

ms

142

°C

© 2010 Fairchild Semiconductor Corporation

FSL127H • Rev. 1.0.2

6

www.fairchildsemi.com

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