SC2441ITSTRT View Datasheet(PDF) - Semtech Corporation

Part Name

Description

MFG CO.

SC2441ITSTRT

Very Low Input Voltage 2-Phase Synchronous Step-down Controllers with Step-up Converter

Semtech Corporation 

SC2441

POWER MANAGEMENT

Electrical Characteristics (Cont.)

Unless specified: VIN = 2V, VCC = VBST1 = VBST1 =8V, SYNC/SHDN =2V, ROSC = 51.1kΩ, -40°C < TA = TJ < 85°C

Parameter

Symbol

Conditions

Gate Drive Disable SS/EN Voltage

Gate Drive Enable SS/EN Voltage

Virtual Phase Nodes

Output High Voltage

Output Low Voltage

Output High Voltage

Output Low Voltage

Boost Converter

VIN Start Threshold

VIN UVLO Threshold

Feedback Pin Bias Current

Feedback Voltage

Feedback Amplifier Transconductance

Feedback Amplifier Open-Loop Gain

Boost Converter Switching Frequency

Maximum Switch Duty Cycle

Boost Converter Switch Saturation Voltage

Boost Switch Leakage Current

Boost Switch Current Limit

VVPN1,2H

VVPN1,2L

VVPN1,2H

VVPN1,2L

VINTH

VINTL

IFB3

VFB3

GM3

ao3

fOSC3

DMAX3

VCESAT

ILEAKAGE

ILIMIT

Note 1: Guaranteed by design not tested in production.

IVPN1=0, IVPN2=0

IVPN1=0, IVPN2=0

IVPN1= IVPN2= -12mA

IVPN1= IVPN2= 12mA

VIN Increasing

VIN Decreasing

1.55V

-40°C

<<VTINA

<

<

16.5V

85°C

ROSC = 51.1kΩ

ISW = 1A, TA = 25°C

VSW = 12V

Min

1.2

PVIN -

0.05

PVIN -

0.22

1.45

1.225

0.94

82

1.7

Typ

1.74

1.59

40

1.250

180

50

86

0.23

2

Max

0.5

20

200

1.8

250

1.275

1.1

0.35

5

Units

V

V

V

mV

V

mV

V

V

nA

V

µΩ-1

dB

MHz

%

V

µA

A

 2005 Semtech Corp.

4

www.semtech.com

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