SC1159 データシートの表示（PDF） - Semtech Corporation

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SC1159

Programmable Synchronous DC/DC Hysteretic Controller with VRM 8.5 VID Range

Semtech Corporation 

SC1159

POWER MANAGEMENT

DC Electrical Characteristics (Cont.)

Parameter

Droop Compensation

Symbols

Conditions

Initial Accuracy

Overcurrent Protection

VDROOP ACC VDROOP = 50 mV

OCP Trip Point

Input Bias Current

High-Side VDS Sensing

VOCP

IbiasOCP

Gain

Initial Accuracy

IOUT Source

IOUT Sink Current

VIOUT Voltage Swing

LOSENSE High Level Input Voltage

LOSENSE Low Level Input Voltage

Sample/Hold Resistance

Buffered Reference

VREFB Load Regulation

Deadtime Circuit (1)

LOHIB High Level Voltage

LOHIB Low Level Input Voltage

LOWDR High Level Input Voltage

LOWDR Low Level Input Voltage

Drive Regulator

DRV Voltage

Load Regulation

Short Circuit Current

VIOUT ACC

IsourceIOUT

IsinkIOUT

VIOUT(11)

VIOUT(4.5V)

VIOUT(3V)

VihLOSENSE

VilLOSENSE

RS/H

VHISENSE = 12V, VIOUTLO = 11.9V

VIOUT = 0.5V, VHISENSE = 12V,

VIOUTLO = 11.5V

VIOUT =0.05V, VHISENSE = 12V,

VIOUTLO = 12V

VHISENSE = 11V, RIOUT = 10K Ω

VHISENSE = 4.5V, RIOUT = 10k Ω

VHISENSE = 3V, RIOUT = 10k Ω

VHISENSE = 4.5V (Note 1)

VHISENSE = 4.5V (Note 1)

(Note 1)

VldregREFB 10µA < IREFB < 500µA

VihLOHIB

VilLOHIB

VihLOWDR

VilLOWDR

VDRV

VldregDRV

IshortDRV

11.4 < VIN12V < 12.6V, IDRV = 50mA

1mA < IDRV < 50mA

Min Typ Max Units

5 mV

0.09 0.1 0.11 V

100 nA

2

500

V/V

6 mV

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

2

mV

2

V

1.0 V

2

V

1.0 V

7

9

V

100

mV

100

mA

 2002 Semtech Corp.

4

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