2

Oct 24-06 Rev L

SP633 Synchronous Buck Controller

© 2006 Sipex Corporation

PARAMETER

MIN TYP MAX UNITS CONDITIONS

QUIESCENT CURRENT

VIN Supply Current

.5

3.0

mA

VFB = V (no switching)

VCC Supply Current

.5

3.0

mA

VFB = V (no switching)

BST Supply Current

0.2

0.4

mA

VFB = V (no switching)

PROTECTION: UVLO

VCC UVLO Start Thresh-

old

4.00

4.25

4.5

V

VCC UVLO Hysteresis

50

200

250

mV

UVIN Start Threshold

2.35

2.50

2.65

V

Apply voltage to UVIN

pin

UVIN Hysteresis

200

300

400

mV

Apply voltage to UVIN

pin

VIN Start Threshold

9.0

9.5

0.0

V

UVIN Floating

VIN Hysteresis

300

mV

UVIN Floating

Enable Pullup Current

0.4

µA

Apply voltage to EN pin

ERROR AMPLIFIER REFERENCE

ErrorAmplifierReference 0.792 0.800 0.808

V

2xGainConfig.

ErrorAmplifierReference

Over Line & Temperature 0.788 0.800 0.82

V

COMP Sink Current

70

50

230

µA

COMP Source Current

-230

-50

-70

µA

VFB Input Bias Current



50

00

nA

COMP Common Mode

Output Range

.9

3.0

3.2

V

COMP Pin Clamp Voltage

3.2

3.5

3.8

V

VFB = 0.7V

ELECTRICAL SPECIFICATIONS

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

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

ofthespecificationsbelowisnotimplied.Exposuretoabsolutemaxi-

mum rating conditions for extended periods of time may affect reliability.

BST................................................................................................ 30V

BST-SWN ........................................................................................ 7V

SWN .................................................................................-2V to 24.5V

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

GH-SWN.......................................................................................... 6V

PeakOutputCurrent<10µs

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

Storage Temperature................................................... -65°Cto150°C

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

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

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

ABSOLUTE MAXIMUM RATINGS