SC1175(2000) 데이터 시트보기 (PDF) - Semtech Corporation

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SC1175
(Rev.:2000)

Low Power Dual Synchronous DC/DC Controller With Current Sharing Circuitry

Semtech Corporation 

SC1175

POWER MANAGEMENT

Absolute Maximum Rating

Parameter

VCC to GND

PGND to GND

BST to GND

Thermal Resistance Junction to Case

Thermal Resistance Junction to Ambient

Operating Ambient Temperature Range

Operating Junction Temperature Range

Storage Temperature Range

Lead Temperature (Soldering) 10 sec

Symbol

VIN

q

JC

q

JA

TA

TJ

TSTG

TLEAD

Limits

-0.3 to 15

±1

-0.3 to 26

30

90

0 to 85

0 to 125

-65 to +150

300

Units

V

V

V

°C/W

°C/W

°C

°C

°C

°C

Electrical Characteristics

Unless Specified: VCC = 4.75 to 5.25V, GND = PGND = 0V, FB = VO, 0mV < (CS(+) - CS(-)) < 60mV , TJ = 25°C

PARAMETER

CONDITIONS

MIN TYP MAX UNITS

Output Voltage

Supply Voltage

Supply Current

Reference

Load Regulation

Reference Line Regulation

Output Line Regulation

Gain (AOL)

Current Limit Voltage

Oscillator Frequency

Oscillator Max Duty Cycle

DH Sink Current

DH Sink Current

DH Source Current

DH Source Current

IO = 2A(1), VOUT set to 2.75V

VCC

VCC = 5.0

IO = 0.3A to 15A (1)

5V < VCC < 15V

5V < VIN < 15V

VOSENSE to VO

DH - PGND = 3.5V

DH - PGND = 1.75V

BSTH - DH = 5.0V

BSTH - DH = 2.5V

2.65 2.75 2.85

V

4.2

15

V

10

mA

1.2375-

±1

1.25

1.2625-

±1

V

1

%

.5

%

.5

%

35

dB

60 70 80

mV

270 300 330 kHz

90 95

%

1

A

.5

A

1

A

.5

A

ã 2000 Semtech Corp.

2

www.semtech.com

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