SC1548 查看數據表（PDF） - Semtech Corporation

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SC1548

Linear FET Controller

Semtech Corporation 

SC1548

POWER MANAGEMENT

Electrical Characteristics (Cont.)(1)

Unless specified: TA = 25°C, VIN = 12V, VPWR = 3.3V, IOUT = 0A. Values in bold apply over full operating temperature range.

Parameter

Symbol

Test Conditions

Min Typ

Max Units

Output Voltage Regulation (Fixed Output Voltage Parts)

Output Voltage(2)

VOUT

3.0V

≤

V (4)

PWR

≤

3.6V,

1mA

≤

IOUT

≤

1A

-1.5%

-2.5%

DRV

Output Current

Output Voltage

Rise Time(2)(3)

Fall Time(2)(3)

Overcurrent Protection

IDRV

VDRV

tr

tf

VDRV = 4V, VSNS = 1.2V

5

Full On, IDRV = 0mA

9.0

VEN

= Low

VEN =

to High, measured

VTH(EN) to 90% VDRV

from

VEN

= High to Low, measured

VEN = VTH(EN) to 10% VDRV

from

Trip Threshold

VTH(OC)

30

Power-up Output Short

1

Circuit Immunity

Output Short Circuit Glitch

0.5

Immunity

Control Section

Bandwidth

VDRV = 9V, THD = 5%, CL = 600pF

Notes:

(1) This device is ESD sensitive. Use of standard ESD handling precautions is required.

(2) See Application Circuit on page 1.

(3) See Timing Diagram on page 4.

(4) Connected to FET drain.

VOUT +1.5%

V

+2.5%

10

mA

10.5

V

1.0

ms

550

µs

50

70

%VOUT

5

60

ms

4

30

ms

5

MHz

 2004 Semtech Corp.

3

www.semtech.com

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