SC1154 데이터 시트보기 (PDF) - Semtech Corporation

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SC1154

Programmable Synchronous DC/DC Hysteretic Controller for Advanced Processors

Semtech Corporation 

SC1154

POWER MANAGEMENT

DC Electrical Characteristics (Cont.)

Parameter

High-Side Output Driver

Peak Output Current

Equivalent Output

Resistance

Low-Side Output Driver

Peak Output Current

Equivalent Output

Resistance

Symbol

Conditions

Min

Isrc

duty cycle < 2%, tpw < 100us,

2

HIGHDR

IsinkHIGHDR

RsrcHIGHDR

RsinkHIGHDR

TJ = 125°C

VBOOT - VBOOTLO = 6.5V, VHIGHDR =1.5V(src),

or VHIGHDR = 5V (sink)

TJ = 125°C

VBOOT - VBOOTLO = 6.5V, VHIGHDR = 6V

TJ = 125°C

VBOOT - VBOOTLO = 6.5V,

VHIGHDR = 0.5V

IsrcLOWDR duty cycle < 2%, tpw < 100us,

2

TJ = 125°C

IsinkLOWDR VDRV - VBOOTLO = 6.5V, VLOWDR = 1.5V (src),

or VLOWDR = 5V (sink) (Note 1)

RsrcLOWDR TJ = 125°C

VDRV = 6.5V, VLOWDR = 6V

RsinkLOWDR

TJ = 125°C

VDRV = 6.5V, VLOWDR = 0.5V

AC Electrical Characteristics (Note 1)

Parameter

Symbol

Conditions

Min

Hysteretic Comparators

Propagation Delay Time

from VSENSE to HIGHDR

or LOWDR (excluding

deadtime)

Output Drivers

tHCPROP

10mV overdrive,

1.3V < Vref < 3.5V

HIGHDR rise/fall time

LOWDR rise/falltime

Overcurrent Protection

trHIGHDR

tr

HIGHDR

trLOWDR

tfLOWDR

CI = 9nF, VBOOT = 6.5V,

V

= grounded,

BOOTLO

TJ =125°C

CI = 9nF, VDRV = 6.5V,

TJ =125°C

Comparator Propagation

Delay Time

tOCPROP

Deglitch Time

tOCDGL

1

PRELIMINARY

Typ Max Units

A

45

Ω

5

A

45

Ω

5

Typ Max Units

150 250 ns

60

ns

60

ns

1

µs

3

µs

 2001 Semtech Corp.

5

www.semtech.com

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