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.)

PRELIMINARY

Parameter

Symbols

Conditions

Min Typ Max Units

Droop Compensation

Initial Accuracy

Overcurrent Protection

VDROOP ACC VDROOP = 50 mV

5

mV

OCP Trip Point

Input Bias Current

High-Side VDS Sensing

Gain

VOCP

Ibias

OCP

0.09 0.1 0.11 V

100 nA

2

V/V

Initial Accuracy

VIOUT ACC VHISENSE = 12V, VIOUTLO = 11.9V

6

mV

IOUT Source

IOUT Sink Current

VIOUT Voltage Swing

IsourceIOUT VIOUT = 0.5V, VHISENSE = 12V,

VIOUTLO = 11.5V

IsinkIOUT

VIOUT = 0.05V, VHISENSE = 12V,

VIOUTLO = 12V

VIOUT (11)

VHISENSE = 11V, RIOUT = 10kOhm

VIOUT (4.5)

VHISENSE = 4.5V, RIOUT = 10kOhm

VIOUT (3)

VHISENSE = 3V, RIOUT = 10kOhm

LOSENSE High Level Input Voltage

LOSENSE Low Level Input Voltage

Sample/Hold Resistance

VihLOISENSE VHISENSE = 4.5V (Note 1)

VilLOISENSE VHISENSE = 4.5V (Note 1)

RS/H

(Note 1)

Buffered Reference

500

µA

40 50

µA

0

3.75 V

0

2.0

V

0

1.0

V

2.85

V

1.8

V

50 65 80

Ω

VREFB Load Regulation

Deadtime Circuit

VldregREFB 10µA < IREFB < 500µA

2

mV

LOHIB High Level Voltage

LOHIB Low Level Input Voltage

LOWDR High Level Input Voltage

LOWDR Low Level Input Voltage

Drive Regulator

VihLOHIB

VilLOHIB

VihLOWDR

VilLOWDR

(Note 1)

(Note 1)

(Note 1)

(Note 1)

2

V

1.0

V

2

V

1.0

V

Output Voltage

Load Regulation

Short Circuit Current

VDRV 11.4 < VIN12V < 12.6V, IDRV = 50mA

7

9

V

VldregDRV 1mA < IDRV < 50mA

100

mV

IshortDRV

100

mA

 2001 Semtech Corp.

4

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