SC1102

SYNCHRONOUS DC/DC CONTROLLER FOR

DISTRIBUTED POWER SUPPLY APPLICATIONS

© 2000 SEMTECH CORP.

652 MITCHELL ROAD NEWBURY PARK CA 91320

September 5, 2000

2

NOTE:

(1) Specification refers to application circuit (Figure 1).

ELECTRICAL CHARACTERISTICS

Unless specified: V

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

POWER SUPPLY

Supply Voltage

V

CC

4.2

12.6

V

Supply Current

EN = V

CC

610

mA

Line Regulation

V

0.5

%

ERROR AMPLIFIER

Gain (AOL)

35

dB

Input Bias

58

µA

OSCILLATOR

Oscillator Frequency

180

200

220

kHz

Oscillator Max Duty Cycle

90

95

%

MOSFET DRIVERS

DH Source/Sink Current

BST

1

A

DL Source/Sink Current

BST

1

A

PROTECTION

OVP Threshold Voltage

20

%

OVP Source Current

V

10

mA

Power Good Threshold

88

112

%

Dead Time

45

100

ns

Over Current Set Isource

2.0V

≤ V

180

200

220

µA

ABSOLUTE MAXIMUM RATINGS

Parameter

Symbol

Maximum

Units

V

V

IN

-0.3 to 14

V

PGND to GND

± 0.5

V

PHASE to GND

-0.3 to 18

V

BSTH to PHASE

14

V

Thermal Resistance Junction to Case

θ

JC

45

°C/W

Thermal Resistance Junction to Ambient

θ

JA

115

°C/W

Operating Temperature Range

T

A

0 to 70

°C

Storage Temperature Range

T

STG

-65 to +150

°C

Lead Temperature (Soldering) 10 sec

T

LEAD

300

°C

ESD Rating (Human Body Model)

ESD

2

kV