SC508 datasheet(5/32 Pages) SEMTECH

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SC508/SC508A

Electrical Characteristics (continued)

Parameter

Conditions

Min

Typ

Max

Units

Fault Protection

LIM Source Current

μA

LIM Source Current Temperature Coefficient

0.41

%/°C

LIM Comparator Offset

With respect to AGND

-8

Output Under-Voltage Threshold

FB with respect to internal 600mV reference,

8 consecutive cycles

-25

Smart Power-Save Protection Threshold

FB with respect to internal 600mV reference

+10

Over-Voltage Protection Threshold

FB with respect to internal 600mV reference

+20

Over-Voltage Fault Delay

μs

Over-Temperature Shutdown

10°C hysteresis

165

°C

Logic Inputs/Outputs

Logic Input High Voltage — EN

1.4

Logic Input High Voltage — PSV

Forced Continuous Mode operation;

PSV pin with respect to VDDA

-0.4

Logic Input Low Voltage — EN, ENL(3)

With respect to AGND

0.4

EN Input Bias Current

EN = VDDA or AGND

-10

+10

μA

ENL Input Bias Current

IN = 46V

+11

μA

FB Input Bias Current

FB = VDDA or AGND

-1

μA

PSV Input Bias Current

PSV = VDDA

μA

PSV < 1.5V

μA

Linear Regulator

VLDO Accuracy

VLDO load = 10mA

4.875

5.0

5.125

Current Limit

VLDO < 1V start-up

1V < VLDO < 4.5V (typ)

Operating, VLDO > 4.5V (typ)

200

VLDO to VOUT Switch-over Threshold (4)

-130

+130

VLDO to VOUT Non-switch-over Threshold (4)

-500

+500

VLDO to VOUT Switch-over Resistance

VLDO = VOUT = 5V

2.0

Ω

VLDO Drop Out Voltage

IN to VLDO, LDO load = 50mA

1.2

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