LD57100 datasheet(6/21 Pages) STMICROELECTRONICS

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Electrical characteristics

VBIAS = 3.0 V or VOUT + 1.6 V (whichever is greater); VIN = VOUT(NOM) + 0.3 V; IOUT = 1 mA; CIN = 4.7 µF, COUT

= 10 µF; CBIAS = 1 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 7. Electrical characteristics

Symbol

Parameter

Test conditions

Min.

Typ.

Max.

Unit

VIN

Operating input voltage

VOUT +

VDROP

5.5

VBIAS

Operating bias voltage

(VOUT +

1.60) ≥

3.0

5.5

VUVLO

Bias undervoltage

lockout

VBIAS rising

TJ = 25 °C

1.45

1.6

1.75

Hysteresis

TJ = 25 °C

0.15

0.2

0.25

VREF

Reference voltage for

adjustable devices

TJ = 25 °C;

0.4975

0.5

0.5025

VOUT

Output voltage

accuracy

All versions, as per conditions above

-0.5

0.5

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

3.0 V or VOUT(NOM) + 1.6 V (whichever is

greater) ≤ VBIAS ≤ 5.5 V;

IOUT = 1 mA to 1 A;

-40 °C ≤ TJ ≤ 85 °C

-1.0

+1.0

∆VOUT-IN

VIN static regulation

VOUT(NOM) + 0.3 V ≤ VIN ≤ 5.0 V,

TJ = 25 °C

0.01

0.1

% / V

∆VOUT-BIAS

VBIAS line regulation

3.0 V or VOUT(NOM) + 1.6 V (whichever is

greater) ≤ VBIAS ≤ 5.5 V,

TJ = 25 °C

0.01

0.1

% / V

∆VOUT-LOAD

Static load regulation

IOUT = 1 mA to 1 A, TJ = 25 °C

1.0

2.0

VDROP

Dropout voltage

IOUT = 1 A; VOUT = 97% of VOUT(NOM)

VDROP-BIAS

Bias dropout voltage (1)

VBIAS=VIN; IOUT = 1 A; VOUT = 97% of

VOUT(NOM)

1.05

1.5

ILIM

Output current limit

VOUT = 90% VOUT(NOM)

1.5

2.6

VOUT = 90% VOUT(NOM) , −30 °C ≤ TJ ≤ 85 °C

1.55

2.6

IFB, ISNS

FB/SNS pin operating

current

0.1

0.5

µA

IBIAS

VBIAS operating

current

VBIAS = 3.0 V, IOUT = 0 mA

µA

IStandby-BIAS

VBIAS standby current

VBIAS input current in OFF mode: VEN = GND

0.1

µA

IStandby-IN

VIN standby current

VIN input current in OFF mode: VEN = GND

0.1

µA

VEN

Enable input logic low

0.4

Enable input logic high

0.9

LD57100

Electrical characteristics

DS13123 - Rev 5

page 6/21

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