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L5955 Datasheet, PDF (8/17 Pages) STMicroelectronics – Multiple multifunction voltage regulator for car radio
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Electrical specification
L5955
Table 4.
Symbol
Electrical characteristics (continued)
(Refer to the application circuit, Vbat =Vbat1+Vbat2+Vbat3= 14V, IST-BY1 = 0.5mA, IST-BY2 =
0.5mA, IREG1 = IREG2 = IREG3 = IREG4 = IREG5 = IREG6 = 5mA, RHSD1 = RHSD2 = RHSD3 = 16Ω)
Parameter
Test condition
Min. Typ. Max. Unit
Ilim4
SVR
Current limit
Ripple rejection (guaranteed by
characterization-test at 1kHz with
50dB Limit)
1.25
2.5
A
50
dB
8V/10V/1A REG4 output
VREG4 Output voltage
IREG4 = 1A
ΔVline Line regulation
11.4V ≤ VBAT ≤ 18V, For
VREG4=10V
9.3V<VBAT<18V For VREG4=8V
(measure Δ VREG4 across VBAT
range)
ΔVload Load regulation
5mA ≤ IREG4≤ 1A
VDROPOUT
Dropout voltage (measure VBAT -
VREG4 when VREG4 drops 0.1V)
IREG4 = 1A
IREG4 = 5mA
Ilim4 Current limit
SVR
Ripple rejection (guaranteed By
characterization-test at 1kHz with
50dB Limit)
7.6
9.50
1.5
50
8.4
V
10.5
V
50
mV
50
mV
150 mV
1.100 mV
600 mV
3
A
dB
1.8-3.3-5V/250mA REG5 output
VREG5 Output voltage
IREG5 = 250mA
ΔVline Line regulation
7V ≤ VBAT ≤ 18V for VREG5=1.8V,
3.3V
9V<VBAT>18V for VREG5=5V
(measure Δ VREG5 across VBAT
range)
ΔVload Load regulation
5mA ≤ IREG5 ≤ 250mA
VDROPOUT
Dropout voltage (measure VBAT -
VREG5 when VREG5 drops 0.1V)
IREG5 = 250mA @ VREG5=1.8V
IREG5 = 5mA @ VREG5=1.8V
IREG5 = 250mA @ VREG5=3.3V
IREG5 = 5mA @ VREG5=3.3V
IREG5 = 250mA @ VREG5=5V
IREG5 = 5mA @ VREG5=5V
Ilim5 Current limit
SVR
Ripple rejection (guaranteed by
characterization-test at 1kHz with
50dB limit)
1.71
3.14
4.75
300
50
1.89
V
3.46
V
5.25
V
40
mV
100 mV
4.89
V
4.29
V
3.46
V
2.86
V
1.85
V
1.25
V
700 mA
dB
8/17
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