SC1155 View Datasheet(PDF) - Semtech Corporation

Part Name

Description

Manufacturer

SC1155

PROGRAMMABLE SYNCHRONOUS DC/DC HYSTERETIC CONTROLLER WITH VRM 9.0 VID RANGE

Semtech Corporation 

SC1155

POWER MANAGEMENT

DC Electrical Characteristics (Cont.)

PRELIMINARY

Parameter

Droop Compensation

Symbols

Conditions

Min Typ Max Units

Initial Accuracy

Overcurrent Protection

VDROOP ACC VDROOP = 50 mV

5

mV

OCP Trip Point

Input Bias Current

High-Side VDS Sensing

V

OCP

IbiasOCP

0.09 0.1 0.11 V

100 nA

Gain

2

V/V

Initial Accuracy

VIOUT ACC VHISENSE = 12V, VIOUTLO = 11.9V

IOUT Source

IsourceIOUT

V = 0.5V, V

= 12V,

IOUT

HISENSE

VIOUTLO = 11.5V

IOUT Sink Current

IsinkIOUT

VIOUT =0.05V, VHISENSE = 12V,

VIOUTLO = 12V

VIOUT Voltage Swing

VIOUT(11) VHISENSE = 11V, RIOUT = 10K0hm

VIOUT(4.5)

VHISENSE = 4.5V,

RIOUT = 10k0hm

VIOUT(3) VHISENSE = 3V, RIOUT = 10k0hm

LOSENSE High Level Input Voltage VihLOSENSE VHISENSE = 4.5V (Note 1)

LOSENSE Low Level Input Voltage VilLOSENSE VHISENSE = 4.5V (Note 1)

Sample/Hold Resistance

RS/H

(Note 1)

Buffered Reference

6

mV

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

DRV 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

www.semtech.com

Share Link: