2

Date: 5/25/04

SP6134 Dual Supply, Synchronous Buck Controller

© Copyright 2004 Sipex Corporation

PARAMETER

MIN

TYP

MAX

UNITS

♦

CONDITIONS

QUIESCENT CURRENT

1.5

3

mA

BST Supply Current

0.2

0.4

mA

♦

PROTECTION: UVLO

4.00

4.25

4.5

V

♦

3.80

4.05

4.4

V

♦

100

200

300

mV

UVIN Start Threshold

2.3

2.5

2.65

V

♦

UVIN Stop Threshold

2.0

2.2

2.35

V

♦

UVIN Hysteresis

300

mV

ERROR AMPLIFIER REFERENCE

Error Amplifier Reference

0.792

0.800

0.808

V

2X Gain Config., Measure COMP/2

Error Amplifier Reference

0.788

0.800

0.812

V

Over Line and Temperature

♦

Error Amplifier Transconductance

6

ms

Error Amplifier Gain

60

dB

No Load

COMP Sink Current

150

COMP Source Current

150

50

200

nA

♦

Internal Pole

4

MHz

COMP Clamp

2.5

V

COMP Clamp Temp. Coefficient

-2

mV/°C

CONTROL LOOP: PWM COMPARATOR, RAMP & LOOP DELAY PATH

Ramp Amplitude

0.92

1.1

1.28

V

♦

RAMP Offset

1.1

V

until GH starts switching

RAMP Offset Temp. Coefficient

-2

mV/°C

GH Minimum Pulse Width

90

180

ns

♦

Maximum Controllable Duty Ratio

92

97

%

♦

Maximum Duty Ratio Measured just

before pulse skipping begins

Maximum Duty Ratio

100

%

Valid for 20 Cycles

Internal Oscillator Frequency

540

600

660

kHz

♦

ELECTRICAL SPECIFICATIONS

apply over the full operating temperature range, unless otherwise specified.

These are stress ratings only and functional operation of the device at

these ratings or any other above those indicated in the operation sections

of the specifications below is not implied. Exposure to absolute maximum

rating conditions for extended periods of time may affect reliability.

BST ............................................................................................... 22V

BST-SWN ......................................................................... -0.3V to 7V

SWN ................................................................................... -1V to 15V

GH ......................................................................... -0.3V to BST+0.3V

GH-SWN ......................................................................................... 7V

Peak Output Current < 10us

GH,GL ............................................................................................. 2A

Storage Temperature .................................................. -65°C to 150°C

Power Dissipation .......................................................................... 1W

Lead Temperature (Soldering, 10 sec) ...................................... 300°C

ESD Rating .......................................................................... 2kV HBM

Thermal Resistance ............................................................. 41.9°C/W

ABSOLUTE MAXIMUM RATINGS

510

600

690