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L5959

Multifunction voltage regulator for car radio

STMicroelectronics 

Electrical specification

L5959

Table 5.

Symbol

Electrical characteristics (continued)

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

Parameter

Test Condition

VUV VBAT Under-voltage warning

VHYSUV

Hysteresis of under-voltage

warning

Verify VBATVW* asserted low

(VBAT Falling)

VSTBY

Vo (VSTBY) Output voltage of VSTBY

ΔV

Line regulation

ΔVi

Load regulation

Vover Over shoot

PSRR Supply voltage ripple rejection

VN

Output noise

Vdrop

Im

Drop out voltage

Drop out voltage

Current limit

TSEN VSTBY thermal shutdown

VBAT = 6 to 18V; I = 100mA

IVSTBY = 0.5 to 100 mA

IVSTBY = 100 to 0.5 mA,

Co=1µF

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)

Weighted filter

fo = 20 Hz to 20 kHz

IVSTBY = 5 mA

IVSTBY = 100mA(1)

IVSTBY = 5 mA

Rshort = 0Ω

IVSTBY = 500 µA;

Increase Ta until VSTBY

disabled

VREGSW

Vo

(VREGSW)

Output voltage 3.3V

VTRK

VREGSW output tracking

voltage on VSTBY

ΔV

Line regulation

ΔVi

Load regulation

IVSTBY = 50 mA

IVREGSW = 0.5 to 800 mA

Measure VSTBY – VREGSW

IVSTBY = 0.5 mA to 100 mA

IVREGSW = 0.5 to 800 mA

Measure VSTBY – VREGSW

Vin1 = 9 to 18V; I = 800mA

IVREGSW = 1 to 800mA

Min. Typ. Max. Unit

7

7.4 7.8

V

70 300 500 mV

3.14 3.3 3.46

V

-10

0

+10 mV

-40

-5

+10 mV

2.5

6

%

50

70

dB

45

55

dB

85 200 µV

2.6

V

2.3

V

150 200 300 mA

150

190 °C

3.14 3.3 3.46

V

-40

40

mV

-50

50

mV

-40 10

40

mV

-50

-15

10

mV

8/19

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