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LDFMPT-TR

500 mA very low drop voltage regulator

STMicroelectronics 

LDFM

Electrical characteristics

TJ = 25 °C, VIN = VOUT(NOM) + 1 Va, CIN = 1 µF, COUT = 2.2 µF, ILOAD = 10 mA, VEN = 2 V, unless otherwise

specified.

Table 6: Electrical characteristics for LDFM (adjustable version)

Symbol

Parameter

Test conditions

Min.

Typ.

Max.

Unit

VIN

VADJ

∆VOUT

∆VOUT

Operating input

voltage

Reference voltage

Reference voltage

tolerance

Static line regulation

Static load regulation

VIN = VOUT+1 V(1)

VOUT+1 V(1) ≤ VIN ≤ 16 V

ILOAD = 10 mA

10 mA ≤ ILOAD ≤ 500 mA

TJ = -40 to 125 °C

VOUT+1 V (1) ≤ VIN ≤ 16 V

VOUT+1 V(1) ≤ VIN ≤ 16 V,

TJ = -40 to 125 °C

10 mA ≤ ILOAD ≤ 500 mA

10 mA ≤ ILOAD ≤ 500 mA,

TJ = -40 to 125 °C

10 mA ≤ ILOAD ≤ 500 mA,

TJ = -40 to 125 °C

DFN6 version

2.5

16

V

0.8

V

-1

1

%

-1.5

1.5

0.01

%/V

0.04

0.06

%/A

0.2

0.4

10

VDROP Dropout voltage (2)

IQ

Quiescent current

VOUT fixed to 2.5 V,

ILOAD = 500 mA,

-40 °C < TJ < 125 °C

ON mode: VEN = 2 V

ILOAD= 10 mA to 500 mA,

TJ = -40 to 125 °C

OFF Mode:VEN = GND,

PPAK and DFN versions

125

300

mV

200

800

30

µA

OFF Mode:VEN = GND,

PPAK and DFN versions,

-40 °C < TJ < 125 °C

ISC Short-circuit current

Enable input logic low

VEN Enable input logic

VIN= 2.5 V to 16 V,

-40 °C < TJ < 125 °C

high

120

0.8

A

0.8

V

2

IEN

Enable pin input

current

VEN = VIN

5

10

µA

Power Good output

Rising edge

threshold

PG

Falling edge

Power Good output

voltage low

ISINK = 6 mA, open drain output

0.92*

VADJ

0.8*

V

VADJ

0.4

a For VOUT < 1.5 V; VIN = 2.5 V.

DocID023585 Rev 4

9/36

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