SC1154(2000) 데이터 시트보기 (PDF) - Semtech Corporation

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SC1154
(Rev.:2000)

PROGRAMMABLE SYNCHRONOUS DC/DC HYSTERETIC CONTROLLER FOR ADVANCED PROCESSORS

Semtech Corporation 

PROGRAMMABLE SYNCHRONOUS

DC/DC HYSTERETIC CONTROLLER

FOR ADVANCED PROCESSORS

SC1154

PRELIMINARY - March 1, 2000

ELECTRICAL CHARACTERISTICS

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

PARAMETER

SYMBOL

CONDITIONS

MIN TYP MAX UNITS

Supply Voltage Range

VIN12V

11.4 12 13 V

Supply Current (Quiescent)

High Side Driver Supply

Current (Quiescent)

IINq

IBOOTq

INH = 5V, VID not 11111,

VIN above UVLO threshold during start-up,

fSW = 200kHz, BOOTLO = 0V,

CDH = CDL = 50pF

INH = 0V or VID = 11111 or VIN below

UVLO threshold during start-up,

BOOT = 13V, BOOTLO = 0V

15

mA

10 µA

INH = 5V, VID not 11111, VIN

5

mA

above UVLO threshold during start-up,

fSW = 200kHz, BOOT = 13V, BOOTLO = 0V,

CDH = 50pF

REFERENCE/VOLTAGE IDENTIFICATION

Reference Voltage Accuracy

VREF 11.4V < VIN12V < 12.6V, over full VID

-1

range (see Output Voltage Table)

1

%

VID0 - VID4 High Threshold

Voltage

VTH(H)

2.25

V

VID0 - VID4 Low Threshold

Voltage

VTH(L)

1

V

POWER GOOD

Undervoltage Threshold

VTH(PWRGD)

Output Saturation Voltage

VSAT

IO = 5mA

Hysteresis

VHYS(PWRGD)

OVER VOLTAGE PROTECTION

90

0.5

10

95 % VREF

V

mV

OVP Trip Point

Hysteresis(1)

VOVP

VHYS(OVP)

12 15

10

20 %VREF

mV

© 2000 SEMTECH CORP.

4

652 MITCHELL ROAD NEWBURY PARK CA 91320

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