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SP6136

Synchronous Buck Controller

Signal Processing Technologies 

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 maxi-

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

VCC .................................................................................................. 6V

VIN .............................................................................................. 24.5V

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

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

SWN.....................................................................................-2V to 24V

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

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

ABSOLUTE MAXIMUM RATINGS

Peak Output Current < 10µs

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

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

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

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

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

All other pins............................................................-0.3V to VCC+0.3V

ELECTRICAL SPECIFICATIONS

Unless otherwise specified: -40°C < TAMB < 85°C, 4.5V < VCC < 5.5V, BST=VCC, SWN = GND = PGND = 0.0V, UVIN = 3.0V, CVCC

= 10µF, CCOMP = 0.1µF, CGH = CGL = 3.3nF, CSS = 50nF, RPWRGD = 10KΩ.

PARAMETER

MIN TYP

QUIESCENT CURRENT

VIN Supply Current

1.5

VCC Supply Current

1.5

BST Supply Current

0.2

PROTECTION: UVLO

VCC UVLO Start

Threshold

4.00 4.25

VCC UVLO Hysteresis 150 200

UVIN Start Threshold

2.35 2.50

UVIN Hysteresis

200 300

VIN Start Threshold

9.0 9.5

VIN Hysteresis

300

Enable Pullup Current

0.4

ERROR AMPLIFIER REFERENCE

Error Amplifier Reference 0.792 0.800

Error Amplifier Reference

Over Line and Tempera- 0.788 0.800

ture

COMP Sink Current

70 150

COMP Source Current -230 -150

VFB Input Bias Current 1

50

COMP Common Mode

Output Range

1.9 3.0

COMP Pin Clamp

Voltage

3.2 3.5

MAX

3.0

3.0

0.4

4.5

250

2.65

400

10.0

0.808

0.812

230

-70

100

3.2

3.8

UNITS CONDITIONS

mA VFB = 1V (no switching)

mA VFB = 1V (no switching)

mA VFB = 1V (no switching)

V

mV

V Apply voltage to UVIN pin

mV Apply voltage to UVIN pin

V UVIN Floating

mV UVIN Floating

µA Apply voltage to EN pin

V 2X Gain Config.

V

µA

µA

nA

V

V VFB = 0.7V

Oct 31-06 Rev L

SP6136 Synchronous Buck Controller



© 2006 Sipex Corporation

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