L5955 查看數據表（PDF） - STMicroelectronics
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L5955 Datasheet PDF : 17 Pages
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L5955
Electrical specification
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
1.8-2.5V/200mA REG6 output
VREG6 Output voltage
IREG6 = 200mA
ΔVline Line regulation
7V ≤ VBAT ≤ 18V (measure Δ
VREG6 across VBAT range)
ΔVload Load regulation
5mA ≤ IREG6 ≤ 200mA
VDROPOUT
Dropout voltage (measure VBAT -
VREG6 when VREG6 drops 0.1V)
IREG6 = 200mA @ VREG6=1.8V
IREG6 = 5mA @ VREG6=1.8V
IREG6 = 200mA @ VREG6=2.5V
IREG6 = 5mA @ VREG6=2.5V
Ilim6 Current limit
SVR
Ripple rejection (guaranteed by
characterization-test at 1kHz with
50dB limit)
2A HSD1
Vsat Output saturation voltage
Ileak1
Ilim
Output leakage current
Current limiting
0.45A HSD2 & HSD3
IHSD1 = 1A
continuous time operation
IHSD1=2A t=5seconds
All Driver Outputs are Off
RHSD1 = 0.5Ω
Vsat Output saturation voltage
Ileak2,3 Output leakage current
Ilim Current limiting
Characteristics for I2C
IHSD2,3 = 300mA
continuous time operation
IHSD2,3=450mA t=5 seconds
All driver outputs are Off
RHSD2,3 = 0.5Ω
VIL
VIH
VHYS
VOL1
VOL1
I1
fSCL
LOW level input voltage
HIGH level input voltage
Input hysteresis
LOW level output
Input current
SCL clock frequency
Sink current = 3mA
Sink current = 6mA
0.5V ≤ VI ≤ 4.5V
1.71
2.38
240
50
2.4
0.550
3
0.2
1.89
V
2.62
V
40
mV
50
mV
4.89
V
4.29
V
4.22
V
3.62
V
600 mA
dB
0.6
V
1.2
V
50
μA
4
A
0.6
V
1.2
V
50
μA
1
A
1.5
V
V
V
0.4
V
0.6
V
10
μA
400 kHz
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