SC461 데이터 시트보기 (PDF) - Semtech Corporation

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SC461

EcoSpeed® DC-DC Buck Controller with Integrated LDO

Semtech Corporation 

SC461

Electrical Characteristics (continued)

Parameter

Fault Protection

ILIM Source Current

ILIM Source Current Temperature Coefficient

ILIM Comparator Offset

Output Under-Voltage Threshold

Smart Power-Save Protection Threshold

Over-Voltage Protection Threshold

Over-Voltage Fault Delay

Over-Temperature Shutdown

Logic Inputs/Outputs

Logic Input High Voltage — EN

Logic Input High Voltage — PSV

Logic Input Low Voltage — EN, ENL(3)

EN Input Bias Current

ENL Input Bias Current

FB Input Bias Current

PSV Input Bias Current

Linear Regulator

VLDO Accuracy

Current Limit

VLDO Drop Out Voltage

Conditions

Temperature 25°C

With respect to AGND

VFB with respect to internal 600mV reference,

8 consecutive cycles

VFB with respect to internal 600mV reference

VFB with respect to internal 600mV reference

10°C hysteresis

Forced Continuous Mode operation;

PSV pin with respect to VDDA

With respect to AGND

EN = VDDA or AGND

VIN = 28V

FB = VDDA or AGND

PSV = VDDA

0.8V < PSV < 1.5V

VLDO load = 10mA

VLDO < 1V (typ) start-up

1V < VLDO < 4.0V (typ)

Operating, VLDO > 4.0V (typ)

VIN to VLDO, LDO load = 50mA

Min Typ Max Units

9

10

11

μA

0.28

%/°C

-8

0

+8

mV

-25

%

+10

%

+20

%

5

μs

165

°C

1.4

V

-0.4

V

0.4

V

-10

+10

μA

+11

μA

-1

+1

μA

5

16

μA

1

μA

4.875 5.0 5.125

V

15

96

mA

200

1.4

V



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