SC415_08 datasheet(5/30 Pages) SEMTECH

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SC415

Parameter

Conditions

25°C

-40° to 85°C

Units

Min

Typ

Max

Min

Max

Regulation (Continued)

VOUT2 On-Time Threshold

FB1 = 5V; 0 to 85°C

FB1 = 5V; -40 to 85°C

1.25

1.2343

1.2281

1.2656

1.2718

FB1 = RTN; 0 to 85°C

FB1 = RTN; -40 to 85°C

1.05

1.0368

1.0316

1.0631

1.0684

VOUTx Line Regulation Error

0.04

%/V

VOUTx Load Regulation Error

0.3

Timing

VOUTx On-Time(1)

VOUTx Set to 1.5V

VOUT1; RTON = 1Meg

VOUT2; RTON = 1Meg

VOUT1; RTON = 499K

VOUT2; RTON = 499K

400

330

200

167

320

260

480

400

nsec

Minimum On-Time

DH1, DH2

nsec

Minimum Off-Time

DL1, DL2

330

nsec

Soft-Start/Shutdown

Soft-Start SSx Current Source

3.5

6.5

μA

Soft-Start Ramp Time

CSSx = 4.7nF

1500

μsec

SSx Shutdown

Discharge Resistance

ENx = RTN,

VOUTx < 300mV

VOUTx Shutdown

Discharge Resistance

ENx = RTN,

VOUTx < 300mV

Analog Inputs/Outputs

VOUT1 Input Resistance

EN1 = VDD1

120

kΩ

VOUT2 Input Resistance

EN2 = VDD2

kΩ

FBx Input Bias Current

-1

μA

Current Sense

ILIMx Source Current

μA

ILIMx Comparator Offset

ILIMx - GND

-10

+10

Current Limit (Negative)

LXx - GND

100

Zero Crossing Detector Threshold

LXx - GND

-7

Power Good

PGDx Threshold

1% Hysteresis Typical,

with Respect to

Regulation Point

-12%

-9%

-15%

PGDx Threshold Delay Time (2)

μsec

Electrical Characteristics (continued)

SC415 数据表(PDF) 5 Page - Semtech Corporation

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