5

Electrical characteristics

If not differently specified, TJ = -40 °C to +125 °C, typical values refer to TJ = +25 °C, VIN = VOUT + 0.5 V or 2.7 V

(whichever is greater), IOUT = 1 mA, VEN = VIN, COUT = 2.2 µF, CNR = 10 nF.

Table 5. Electrical characteristics

Symbol

Parameter

Test conditions

Min.

Typ.

Max.

Unit

VIN

Operating input voltage (1)

2.7

6.5

V

VADJ

Reference voltage for Adj

TAMB = 25 °C

1.196

1.208

1.22

V

VOUT

Output voltage range

VADJ

6

V

Output voltage accuracy (1)

1 mA < IOUT < 500 mA

VOUT + 0.5 V < VIN < 6.5 V

VOUT > 2.2 V

-2

2

%

1 mA < IOUT < 500 mA

VOUT + 0.5 V < VIN < 6.5 V

VOUT up to 2.2 V

-3

3

%

Line regulation (1)

VOUT+ 0.5 V < VIN < 6.5 V

0.02

%/V

Load Regulation

0.5 mA < IOUT < 500 mA

0.005

%/mA

VDO

Dropout Voltage (2)

IOUT = 500 mA

190

500

mV

ILIM

Output current limit

VOUT = 0.9 x VOUTNOM,

VIN = VOUTNOM + 0.9 V,

VIN > 2.7 V

800

mA

IGND

Ground pin current

IOUT = 10 mA

48

65

µA

IOUT = 500 mA

70

120

ISHDN

Shutdown current

VEN = 0 V

1

µA

IFB

Feedback pin current (Adj)

VOUTNOM = 1.2 V

-0.5

0.5

µA

PSRR

Power supply rejection

ration

VIN = 4.3 V

VOUT = 3.3 V

CNR = 10 nF

IOUT = 100 mA

F = 100 Hz

65

dB

F = 1 KHz

47

F = 10 KHz

45

dB

F = 100 KHz

38

VNOISE

Output noise

BW = 10 Hz to 100 KHz,

VOUT = 2.8 V, CNR = 10 nF

13xVOUT

µVRMS

BW = 10 Hz to 100 KHz,

VOUT = 2.8 V, no CNR

25xVOUT

µVRMS

TSTR

Start-up time

VOUT = 10% to 90%

Without CNR

45

µsec

CNR = 1 nF

45

CNR = 10 nF

50

CNR = 47 nF

50

VEN (H)

Enable input logic level High

1.2

V

VEN (L)

Enable input logic level Low

0.4

V

IEN

Enable pin current (EN = H)

VEN = VIN = 6.5 V

0.03

1

µA

LDLN050

Electrical characteristics

DS12809 - Rev 4

page 6/22