L4995AJTR datasheet(9/36 Pages) STMICROELECTRONICS

9 / 36 page

Electrical specifications

L4995

10/37

DS5053 Rev 15

2.2

Thermal data

For details, please refer to Section 4.1: PowerSSO-12 thermal data and Section 4.2:

PowerSSO-24 thermal data.

2.3

Electrical characteristics

Values specified in this section are for Vs = 5.6V to 31V, Tj = -40 °C to +150 °C unless

otherwise stated.

Table 4. Thermal data(1)

The values quoted are for PCB 77mm x 86mm x 1.6mm, FR4, double layer; Copper thickness 0.070mm

Copper area 3cm2 Thermal Vias, Thermal vias separation 1.2 mm, Thermal via diameter 0.3 mm +/- 0.08

mm, Cu thickness on vias 0.025 mm.

Symbol

Parameter

Value

Unit

Rthj-case

Thermal resistance Junction to Case:

PowerSSO-12

PowerSSO-24

°K/W

Rthj-amb

Thermal resistance Junction to Ambient:

PowerSSO-12

PowerSSO-24

°K/W

Table 5. General

Symbol

Parameter

Test condition

Min.

Typ.

Max.

Unit

Vo_ref

Output voltage

VS = 5.6 to 31V

Io = 0 to 500mA

4.9

5.00

5.1

Ishort

Short circuit current

VS = 13.5V

(1)

550

800

1050

Ilim

(2)

Output current limitation

VS = 13.5V

(1)

600

900

1250

VS, Vo

Vline

Line regulation voltage

VS = 5.6 to 31V

Io = 0 to 500mA

Vload

Load regulation voltage

Io = 0 to 500mA

VS, Vo

Vdp

(3)

Drop voltage

Io = 400mA

270

500

VS, Vo

SVR

Ripple rejection

fr = 100 Hz

(4)

VS, Vo

Iqs

Current consumption with

regulator disabled

VS = 13.5V,

En = low

310

µA

VS, Vo

Iqn_1

Current consumption

with regulator enabled

VS = 13.5V,

Io < 1mA,

160

µA

VS, Vo

Iqn_50

Current consumption

with regulator enabled

VS = 13.5V,

Io = 50mA,

290

400

µA

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