L5959 datasheet(8/19 Pages) STMICROELECTRONICS

8 / 19 page

Electrical specification

L5959

8/19

VUV

VBAT Under-voltage warning

Verify VBATVW* asserted low

(VBAT Falling)

77.4

7.8

VHYSUV

Hysteresis of under-voltage

warning

300

500

VSTBY

Vo(VSTBY) Output voltage of VSTBY

3.14

3.3

3.46

V

Line regulation

VBAT = 6 to 18V; I = 100mA

-10

+10

V

Load regulation

IVSTBY = 0.5 to 100 mA

-40

-5

+10

Vover

Over shoot

IVSTBY = 100 to 0.5 mA,

Co=1µF

2.5

PSRR

Supply voltage ripple rejection

IVSTBY = 50 mA;

fo = 20 to 1 kHz;

VBAT = 14 Vdc, 1.0 Vac(pp)

IVSTBY = 50 mA;

fo = 20 to 20 kHz;

VBAT = 14 Vdc, 1.0 Vac(pp)

Output noise

Weighted filter

fo = 20 Hz to 20 kHz

IVSTBY = 5 mA

200

µV

Vdrop

Drop out voltage

IVSTBY = 100mA

(1)

2.6

Drop out voltage

IVSTBY = 5 mA

2.3

Current limit

Rshort = 0



150

200

300

TSEN

VSTBY thermal shutdown

IVSTBY = 500 µA;

Increase Ta until VSTBY

disabled

150

190

°C

VREGSW

(VREGSW)

Output voltage 3.3V

3.14

3.3

3.46

VTRK

VREGSW output tracking

voltage on VSTBY

IVSTBY = 50 mA

IVREGSW = 0.5 to 800 mA

Measure VSTBY – VREGSW

-40

IVSTBY = 0.5 mA to 100 mA

IVREGSW = 0.5 to 800 mA

Measure VSTBY – VREGSW

-50

V

Line regulation

Vin1 = 9 to 18V; I = 800mA

-40

V

Load regulation

IVREGSW = 1 to 800mA

-50

-15

Table 5.

Electrical characteristics (continued)

(VS = 14.4V; Tamb = 25°C; unless otherwise specified)

Symbol

Parameter

Test Condition

Min.

Typ.

Max.

Unit

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