SC560A datasheet(4/18 Pages) SEMTECH

Part #	SC560A

Description	Dual Output Low Noise LDO Linear Regulator

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Manufacturer	SEMTECH [Semtech Corporation]

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SC560

4

Parameter

Symbol

Conditions

Min

Typ

Max

Units

Noise(3)

e

N

V

IN = 3.7V, IOUTx = 50mA ,

10Hz < f < 100kHz, C

BYP = 22nF

50

μV

RMS

V

IN = 3.7V, IOUTx = 50mA ,

10Hz < f < 100kHz

300

μV

RMS

Power Supply Rejection

Ratio (3)

PSRR

V

IN = 3.7V, IOUTx = 50mA, f = 1kHz,

C

BYP = 22nF

65

dB

V

IN = 3.7V, IOUTx = 50mA, f = 1kHz

40

PGOOD Delay(4)

t

DELAY

160

200

240

ms

PGOOD Threshold(4)

V

TH-PGOOD

Percentage of nominal output,

V

OUTA falling

82

87

92

%

Start-Up Time

t

SU

From OFF to 87% V

OUTx, IOUTx = 50mA,

C

BYP = 22nF

(2)

1

ms

Power Up Delay Between LDOA and

LDOB(5)

t

DELAY

Delay between V

OUTA and VOUTB start-ups

128

μs

Under Voltage Lockout

V

UVLO

V

IN Rising

2.15

2.25

2.35

V

UVLO Hysteresis

V

UVLO-HYS

100

mV

Over Temperature Protection

Threshold

T

OT

Temperature Rising

160

°C

Over Temperature Hysteresis

T

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,VIN=3.7V

7

20

mV

Electrical Characteristics (continued)

Notes:

(1) Dropout voltage is de ned as V

IN - VOUTx , when VOUTx is 100mV below the value of VOUTx at VIN = VOUTx + 0.5V.

(2) SC560A, SC560B and SC560C only

(3) Except SC560B and xed output versions

(4) Except SC560A and SC560B

(5) SC560A and SC560C only

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