SC1154CSW(2000) 查看數據表（PDF） - Semtech Corporation

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SC1154CSW
(Rev.:2000)

PROGRAMMABLE SYNCHRONOUS DC/DC HYSTERETIC CONTROLLER FOR ADVANCED PROCESSORS

Semtech Corporation 

PROGRAMMABLE SYNCHRONOUS

DC/DC HYSTERETIC CONTROLLER

FOR ADVANCED PROCESSORS

PRELIMINARY - March 1, 2000

ELECTRICAL CHARACTERISTICS (cont.)

Unless specified: 0 < TJ < 125°C, VIN12V = 12V

PARAMETER

SYMBOL

CONDITIONS

HIGH-SIDE OUTPUT DRIVER (cont.)

Output Resistance

RsrcHIGHDR’

TJ = 125°C

VBOOT - VBOOTLO = 6.5V,

VHIGHDR = 6V

RsinkHIGHDR

TJ = 125°C

VBOOT - VBOOTLO = 6.5V,

VHIGHDR = 0.5V

LOW-SIDE OUTPUT DRIVER

Peak Outout Current

IsrcLOWDR’

IsinkLOWDR

duty cycle < 2%, tpw < 100us,

TJ = 125°C

VDRV = 6.5V, VLOWDR = 1.5V

(src), or VLOWDR = 5V (sink)

(Note 1)

Output Resistance

RsrcLOWDR’ TJ = 125°C

VDRV = 6.5V, VLOWDR = 6V

RsinkLOWDR

HYSTERETIC COMPARATORS(1)

TJ = 125°C

VDRV = 6.5V, VLOWDR = 0.5V

Propagation Delay Time

from

VSENSE to HIGHDR or

LOWDR (excluding

deadtime)

tHCPROP

10mV overdrive,

1.3V < Vref < 3.5V

OUTPUT DRIVERS

HIGHDR rise/fall time

trHIGHDR

,tfHIGHDR

LOWDR rise/fall time

trLOWDR ,

tfLOWDR

OVERCURRENT PROTECTION(1)

Cl = 9nF, VBOOT = 6.5v,

VBOOTLO = grounded,

TJ = 125 °C

Cl = 9nF, VDRV = 6.5v,

TJ = 125 °C

Comparator Propagation

Delay Time

tOCPROP

Deglitch Time

tOCDGL

OVERVOLTAGE PROTECTION

Comparator Propagation

Delay Time

tOVPROP

Deglitch Time

tOVDGL

MIN

2

1

1

TYP

150

1

1

SC1154

MAX UNITS

45

Ω

5

A

45

Ω

5

250

ns

60

ns

60

ns

µs

3

µs

µs

3

µs

© 2000 SEMTECH CORP.

7

652 MITCHELL ROAD NEWBURY PARK CA 91320

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