L4979D-E datasheet(8/22 Pages) STMICROELECTRONICS

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Electrical specifications

L4979D-E, L4979MD

8/22

DS3717 Rev 12

2.2

Electrical characteristics

Vs = 5.6 V to 31 V; Tj = -40 °C to 150 °C, unless otherwise specified.

Table 5. General

Symbol

Parameter

Test condition

Min.

Typ.

Max.

Unit

Vs, Vo

Quiescent current

Vs = 13.5 V, Io = 150 mA,

enable high all

I/O currents = 0

1.5

Vs, Vo

Quiescent current

Vs = 13.5 V, Io = 0 mA,

enable high all

I/O currents = 0

100

200

µA

Vs, Vo

Quiescent current

Vs = 13.5 V, Io = 0 mA,

enable low all

I/O currents = 0

µA

Thermal protection

temperature

150

190

°C

Tw_hy

Thermal protection

temperature

hysteresis

°C

Table 6. Voltage regulator

Symbol

Parameter

Test condition

Min.

Typ.

Max.

Unit

Vo_ref Output voltage

Vs = 5.6 to 31 V;

Io = 1 to 150 mA

4.90

5.00

5.10

Ishort

Output short -ircuit

current(1)

1. See Figure 3: Behavior of output current versus regulated voltage V

Vs = 13.5 V

150

280

400

Ilim

Output current

limitation(1)

Vs = 13.5 V

150

320

500

Vs, Vo

Vline

Line regulation voltage

Vs = 5.6 to 31 V

Io = 1 to 150 mA

Vload

Load regulation voltage Io = 1 to 150 mA

Vs, Vo

Vdp

Drop voltage

Io = 150 mA

200

400

Vs, Vo

SVR

Ripple rejection(2)

2. Guaranteed by design.

fr = 100 Hz

Table 7. Reset

Symbol

Parameter

Test condition

Min.

Typ.

Max.

Unit

Res

Vres_l

Reset output low

voltage

Rext = 5 k to Vo;

Vo > 1 V

0.4

Res

Ires_h

Reset output high

leakage current

Vres = 5 V

µA

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