SC401B

6

Electrical Characteristics (continued)

Parameter

Conditions

Min

Typ

Max

Units

Linear Regulator (LDO)

FBL Accuracy

VLDO load = 5mA

0.728

0.75

0.773

V

LDO Current Limit

Short-circuit protection, V

65

mA

Start-up and foldback, V

0.75 < V

115

Operating current limit, V

V

135

200

-130

+130

mV

-500

+500

mV

VLDO to VOUT Switch-over Resistance

V

2

Ω

From V

1.2

V

Notes:

(1) V

(2) Typical value measured on standard evaluation board.

(3) SC401B has first order temperature compensation for over current. Results vary based upon the PCB thermal layout.

(4) The switch-over threshold is the maximum voltage differential between the VDD and VOUT pins which ensures that VLDO will internally

switch-over to VOUT. The non-switch-over threshold is the minimum voltage differential between the VLDO and VOUT pins which ensures

that VLDO will not switch-over to VOUT.

(5) The LDO drop out voltage is the voltage at which the LDO output drops 2% below the nominal regulation point.