LDK320M50R datasheet(8/25 Pages) STMICROELECTRONICS

Part #	LDK320M50R

Description	200 mA low quiescent current and high PSRR voltage regulator

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

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Electrical characteristics

LDK320

8/25

DocID028460 Rev 1

Symbol

Parameter

Test conditions

Min.

Typ.

Max.

Unit

IEN

Enable pin input current

VEN = VIN

0.1

100

nA

TSHDN

Thermal shutdown

160

°C

Hysteresis

20

COUT

Output capacitor

Capacitance (see Section 6:

"Typical characteristics")

1

22

µF

Notes:

(1)Dropout voltage is the input-to-output voltage difference at which the output voltage is 100 mV below its nominal

value.

TJ = 25 °C, VIN = 2.5 V, CIN = COUT

= 1 μF, IOUT = 1 mA, VEN = VIN, unless otherwise

specified.

Table 7: LDK320 electrical characteristics (ADJ version)

Symbol

Parameter

Test conditions

Min.

Typ.

Max.

Unit

VIN

Operating input

voltage

2.5

18

V

VADJ

Adjustable voltage

TJ = 25 °C

1.185

V

Adjustable voltage

accuracy

TJ = 25 °C

-2

+2

%

40 °C < TJ < 125 °C

-3

+3

Adjustable voltage,

LDK320A

TJ = 25 °C

1.2

V

Adjustable voltage

accuracy, LDK320A

TJ = 25 °C

-0.5

+0.5

%

40 °C < TJ <125 °C

-1.5

+1.5

ΔVOUT

Static line regulation

VOUT

+ 1 V ≤ VIN ≤ 18 V

0.001

0.05

%/V

ΔVOUT

Static load regulation

IOUT = 1 mA to 200 mA

0.0002

0.003

%/mA

VDROP

Dropout voltage (1)

IOUT = 100 mA VOUT = 3.3 V

100

mV

IOUT = 200 mA

VOUT = 3.3 V

40 °C < TJ < 125 °C

200

350

eN

Output noise voltage

10 Hz to 100 kHz

IOUT = 10 mA

60

μVRMS

IADJ

Adjust pin current

1

μA

SVR

Supply voltage

rejection

f = 120 Hz

IOUT = 10 mA

VOUT = VADJ

83

dB

f = 1 kHz

IOUT = 10 mA

VOUT = VADJ

73

f = 10 kHz

IOUT = 10 mA

VOUT = VADJ

58

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