LDK120XX datasheet(8/25 Pages) STMICROELECTRONICS

Part #	LDK120XX

Description	200 mA low quiescent current very low noise LDO

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

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Electrical characteristics

LDK120xx

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Doc ID 023965 Rev 2

TJ = 25 °C, VIN = VOUT(NOM) + 1 V, CIN = COUT = 1 µF, IOUT = 1 mA, VEN = VIN, unless

otherwise specified.

Table 6.

Electrical characteristics for LDK120

Symbol

Parameter

Test conditions

Min.

Typ.

Max.

Unit

VIN

Operating input voltage

1.9

5.5

V

VADJ

VADJ accuracy

IOUT=1 mA, TJ=25 °C

784

800

816

mV

IOUT=1 mA, -40 °C<TJ<125 °C

-3.0

3.0

%

ΔVOUT

Static line regulation

VOUT +1 V ≤ VIN ≤ 5.5 V, IOUT=1 mA

0.05

%/V

ΔVOUT

Static load regulation

IOUT=1 mA to 200 mA

0.006

%/mA

VDROP

Dropout voltage (1)

IOUT=100 mA, VOUT=2.5 V

100

mV

IOUT = 200 mA, VOUT=2.5 V

40 °C<TJ<125 °C,

150

300

eN

Output noise voltage

10 Hz to 100 kHz, IOUT=10 mA

130

µVRMS

/V

IADJ

Adjust pin current

1

µA

SVR

Supply voltage rejection

VIN=VOUTNOM+0.5 V+/-VRIPPLE

VRIPPLE=0.1 V Freq.=120 Hz to 10

kHz IOUT=10 mA

55

dB

IQ

Quiescent current

IOUT=0 mA, -40 °C<TJ<125 °C

30

60

µA

IOUT=200 mA, -40 °C<TJ<125 °C

50

100

VIN input current in OFF mode:

VEN=GND

1

ISC

Short-circuit current

RL=0

400

mA

VEN

Enable input logic low

VIN=1.9 V to 5.5 V, -40 °C<TJ<125 °C

0.4

V

Enable input logic high

VIN=1.9 V to 5.5 V, -40 °C<TJ<125 °C

1.2

IEN

Enable pin input current VSHDN=VIN

100

nA

TSHDN

Thermal shutdown

160

°C

Hysteresis

20

COUT

Output capacitor

Capacitance (see

Section 6: Typical

performance characteristics)

122

µF

1.

Dropout voltage is the input-to-output voltage difference at which the output voltage is 100 mV below its nominal value.

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