L5957PDTR datasheet(7/16 Pages) STMICROELECTRONICS

7 / 16 page

L5957

Electrical specifications

Doc ID 14442 Rev 2

7/16

Regulator 1

Vo (REG 1)

Output voltage 8.5 V

8.5

ΔV

Line regulation

Vin1 = 10 to 18 V; I = 500 mA

Vin1 = 9.3 to 18 V; I = 10 mA

ΔVi

Load regulation

Ireg1 = 1 to 500 mA

100

Quiescent current

Ireg1 = 10 mA

PSRR

Supply voltage ripple rejection

f = 1 kHz; Vin1 = 1.5 Vpp;

Io = 500 mA

Vdrop

Drop out voltage

Ireg1 = 500 mA

(1)

0.6

Current limit

Rshort = 0.5 Ω

0.6

1.2

Regulator 2

Vo (ST BY)

Output voltage 5 V

4.7

5.3

ΔV

Line regulation

Vin1 = 7 to 18 V; I = 300 mA

Vin1 = 6 to 18 V; I = 10 mA

ΔVi

Load regulation

Ireg2 = 1 to 300 mA

100

Quiescent Current

Ireg2 = 10 mA

PSRR

Supply voltage ripple rejection

f = 1 kHz; Vin1 = 1.5 Vpp;

Io = 300 mA

Vdrop

Drop out voltage

Ireg2 = 300 mA

(1)

1.5

Ireg2 = 100 mA

(1)

0.6

Current limit

Rshort = 0.5 Ω

400

800

Regulator 3

Vo (REG 3)

Output voltage 5V

4.75

5.25

ΔV

Line regulation

Vin2 = 7 to 18 V; I = 800 mA

Vin2 = 6 to 18 V; I = 10 mA

ΔVi

Load regulation

Ireg3 = 1 to 800 mA

100

Quiescent current

Ireg3 = 10 mA

PSRR

Supply voltage ripple rejection

f = 1 kHz; Vin1 = 1.5 Vpp;

Io = 800 mA

Vdrop

Drop out voltage

Ireg3 = 800 mA

(1)

1.5

Current limit

Rshort = 0.5 Ω

1-2

Regulator 4

Vo (REG 4)

Output voltage 3.3V

3.10

3.3

3.50

ΔV

Line regulation

Vin2 = 6 to 18 V; I = 800 mA

ΔV

Line regulation

Vin2 = 6 to 18 V; I = 10 mA

Table 4.

Electrical characteristics (continued)

Symbol

Parameter

Test condition

Min.

Typ.

Max.

Unit

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