5

Electrical characteristics

VBIAS = 2.7 V or VOUT + 1.6 V (whichever is greater); VIN = VOUT(NOM) + 0.3 V; IOUT = 1 mA; CIN = 1 µF, COUT =

2.2 µF; VEN = 1 V; typical values are at TJ = 25 °C; min./max. values are at -40 °C ≤ TJ ≤ 85 °C, unless otherwise

specified.

Table 6. Electrical characteristics

Symbol

Parameter

Test conditions

Min.

Typ. Max.

Unit

VIN

Operating input voltage

VOUT +

VDROP

5.5

V

VBIAS

Operating bias voltage

VOUT ≤ 1 V

2.4

5.5

V

VOUT > 1 V

VOUT +

1.4

5.5

V

VUVLO

BIAS undervoltage

lockout

VBIAS rising

1.6

V

Hysteresis

0.2

VOUT

Output voltage accuracy

±0.5

%

VOUT(NOM) + 0.3 V ≤ VIN ≤ VOUT(NOM) + 1.0 V;

2.7 V or VOUT(NOM) + 1.6 V (whichever is greater) ≤

VBIAS ≤ 5.5 V;

IOUT = 1 mA to 0.5 A; -40°C ≤ TJ ≤ 85°C

-1.5

+1.5

%

∆VOUT-IN

VIN static regulation(1)

VOUT(NOM) + 0.3 V ≤ VIN ≤ 5.0 V, IOUT = 1 mA

0.02

0.1

%/V

∆VOUT-BIAS

VBIAS line regulation(1)

2.7 V or VOUT(NOM) + 1.6 V (whichever is greater) ≤

VBIAS ≤ 5.5 V; IOUT = 1 mA

0.01

0.1

%/V

∆VOUT

Static load regulation

IOUT = 1 mA to 500 mA

1.5

mV

VDROP

Dropout voltage

IOUT = 0.15 A; VOUT = 97% of VOUT(NOM)

27

75

mV

IOUT = 0.5 A; VOUT = 97% of VOUT(NOM)

80

250

VDROP-BIAS

Dropout voltage

VBIAS = VIN; IOUT = 0.5 A

0.9

1.5

V

eN

Output noise voltage

VOUT(NOM) = 1.05 V; VIN = 1.5 V 10 Hz to 100 kHz,

IOUT = 1 mA

38

µVRMS

SVRIN

VIN supply voltage

rejection

VIN = VOUT(NOM)+ 0.5 V +/- VRIPPLE

VRIPPLE = 0.2 V, freq=1 kHz, IOUT = 150 mA;

VBIAS = 2.7 V or VOUT + 1.6 V (whichever is

greater)

75

dB

SVRBIAS

VBIAS supply voltage

rejection

VBIAS = 2.9 V or VOUT + 1.8 V (whichever is

greater) +/- VRIPPLE

VRIPPLE = 0.2 V freq = 1 kHz IOUT = 150 mA;

VIN = VOUT(NOM)+ 0.5 V

76

dB

IBIAS

VBIAS operating current

IOUT = 0 mA; VBIAS = 2.7 V

27

40

µA

IStandby-BIAS

VBIAS standby current

VBIAS input current in OFF MODE: VEN = GND

0.03

1

µA

IStandby-IN

VIN standby current

VIN input current in OFF MODE: VEN = GND

0.03

1

µA

ILIM

Output current limit

VOUT= 0.9 x VOUT(NOM)

550

700 1000

mA

ISC

Short-circuit current

VOUT = 0 (foldback protection)

365

500

mA

LD56050

Electrical characteristics

DS12441 - Rev 2

page 6/21