SC561

4

Parameter

Symbol

Conditions

Min

Typ

Max

Units

Current Limit

I

LIMx

350

850

mA

Noise

e

N

I

OUTx

= 50mA ,

10Hz < f < 100kHz, C

BYP

= 22nF

50

μV

RMS

Power Supply Rejection

Ratio

PSRR

I

OUTx

= 50mA, f = 1kHz,

C

BYP

= 22nF

65

dB

PGOOD Delay

t

DELAY

160

200

240

ms

PGOOD Threshold

V

TH-PGOOD

Percentage of nominal output,

V

OUTA

falling

82

87

92

%

PGOOD Threshold Hysteresis

V

PGOOD-HYS

3%

Start-Up Time

t

SU

From OFF to 87% V

OUTx

, I

OUTx

= 50mA,

C

BYP

= 22nF

1ms

Under Voltage Lockout

V

UVLO

V

IN

Rising

2.20

2.30

2.40

V

UVLO Hysteresis

V

UVLO-HYS

100

mV

Over Temperature Protection

T

OT

Temperature Rising

160

°C

Over Temperature Threshold

Hysteresis

V

OT-HYS

20

°C

Digital Inputs

Logic Input High Threshold

V

IH

V

IN

= 5.5V

1.25

V

Logic Input Low Threshold

V

IL

V

IN

= 2.5V

0.4

V

Logic Input High Current

I

IH

V

IN

= 5.5V

1

μA

Logic Input Low Current

I

IL

V

IN

= 5.5V

1

μA

Digital Outputs

PGOOD Output voltage Low

V

OL

I

SINK

= 500μA,V

IN

=3.7V

7

20

mV

Electrical Characteristics (continued)

Notes:

(1) Dropout voltage is defined as V

IN

- V

OUTx

, when V

OUTx

is 100mV below the value of V

OUTx

at V

IN

= V

OUTx

+ 0.5V.

(2) Guaranteed by design

(3) Thermal shutdown latches both LDOs off. Cycle EN or VIN pin to reset.