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SC1176

Dual Synchronous Voltage Mode Controller with Current Sharing Circuitry

Semtech Corporation 

SC1176/SC1176A

POWER MANAGEMENT

Absolute Maximum Rating

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.

Parameter

Symbol

Limits

Units

VCC to GND

PGND to GND

VIN

-0.3 to 15

V

±1

V

BST to GND

-0.3 to 26

V

Thermal Resistance Junction to Case

SOIC

TSSOP

Thermal Resistance Junction to Ambient

SOIC

TSSOP

Operating Ambient Temperature Range

Operating Junction Temperature Range

Storage Temperature Range

Lead Temperature (Soldering) 10 sec

θJC

θJA

TA

TJ

TSTG

TLEAD

24

27

65

85

0 to 70

0 to 125

-65 to +150

300

°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

Output Voltage

Supply Voltage

Supply Current

Reference Voltage

Reference Voltage Line Regulation

Reference Voltage Load Regulation

Output Line Regulation

Output Load Regulation

Gain (AOL)

Current Limit Voltage

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

VCC

VCC = 5.0

IREF = 0µA

5V < VCC < 15V

IREF = 0µA to 30µA

5V < VIN < 15V

IO = 0.3A to 15A (1)

VOSENSE to VO

2.65

4.2

0.89

60

Oscillator Frequency

270

Oscillator Max Duty Cycle

90

DH Sink Current

DH - PGND = 3.0V

1.3

DH Sink Current

DH - PGND = 2.0V

0.85

DH Source Current

BSTH - DH = 3.5V

1.3

DH Source Current

BSTH - DH = 2.5V

0.85

Typ Max

2.75 2.85

15

15

0.9 0.91

0.5

-12

0.5

1

35

70

80

300 330

95

Units

V

V

mA

V

%

mV

%

%

dB

mV

kHz

%

A

A

A

A

 2006 Semtech Corp.

3

www.semtech.com

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