SC1548 查看數據表（PDF） - Semtech Corporation

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产品描述 (功能)

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SC1548

Linear FET Controller

Semtech Corporation 

SC1548

POWER MANAGEMENT

Absolute Maximum Ratings

Exceeding the specifications below may result in permanent damage to the device, or device malfunction. Operation outside of the parameters specified

in the Electrical Characteristics section is not implied. Exposure to Absolute Maximum rated conditions for extended periods of time may affect device

reliability.

Parameter

Symbol

Maximum

Units

Input Supply Voltage

VIN

-0.5 to +15

V

Input Pins

VADJ, VEN, VSNS

-0.5 to +7

V

Thermal Impedance Junction to Case

θJC

81

°C/W

Thermal Impedance Junction to Ambient

θJA

256

°C/W

Operating Ambient Temperature Range

TA

0 to +70

°C

Operating Junction Temperature Range

TJ

0 to +125

°C

Storage Temperature Range

TSTG

-65 to +150

°C

Lead Temperature (Soldering) 10 Sec

TLEAD

300

°C

Electrical Characteristics(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

IN

Supply Voltage

VIN

Quiescent Current

IQ

11.28 12.00 12.72 V

1.0

1.5 mA

2.0

Undervoltage Lockout

Start Threshold

UVLO

7

8

9

V

EN

Enable Pin Current

Threshold Voltage

Hysteresis

Enable Delay Time(2)(3)

IEN

VTH(EN)

VHYST

tD(ON)

Disable Delay Time(2)(3)

tD(OFF)

SNS (Fixed Output Voltage Parts)

VEN = 0V

VEN rising

VEN

= Low

VEN =

to High, measured

VTH(EN) to 10% VDRV

from

VEN

= High to Low, measured

VEN = VTH(EN) to 90% VDRV

from

100 150 µA

1.8

2.3

V

200

mV

500

ns

150

ns

Sense Pin Current

ISNS

ADJ (Adjustable Output Voltage Parts)

Sinking

75

100 125 µA

Adjust Pin Current

Reference Voltage(2)

IADJ

Sourcing

0.25

µA

VADJ

3.0V

≤

V (4)

PWR

≤

3.6V,

1mA

≤

IOUT

≤

1A

-1.5% 1.263 +1.5% V

-2.5%

+2.5%

 2004 Semtech Corp.

2

www.semtech.com

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