L5951
ELECTRICAL CHARACTERISTICS (continued)
(Tamb = 25°C, VBAT = 14.4V unless otherwise specified. Standard Loads: IREG1 = 0.5mA, IREG2 = 0.5mA, IREG3 = 5mA)
Symbol
Parameter
Test Condition
Min. Typ. Max. Unit
∆Vload Load Regulation
0.5mA ≤ IREG2 ≤ 100mA
(Measure ∆VREG2 Across VLOAD
Range)
14
100 mV
VDROPOUT Dropout Voltage (Measure VBAT - IREG2 =100mA
VREG2 when VREG2 drops 0.1V) IREG2 =5mA
450
mV
22
mV
Ilim2 Current Limit
200
mA
SVR2 Reg2 Supply Voltage Rejection
IREG1 = IREG2 = IREG3 = 50mA
f = 20 to 20kHz
VBAT = 14Vdc, 1Vac,pp
45
dB
7.8V/100mA Regulator Output 3
VREG3 Output Voltage
IREG3 =100mA - 8.8V ≤ VBAT ≤
7.60 7.8
8
V
Range
DVline Line Regulation
8.8V ≤ VBAT ≤ 26V
(Measure ∆VREG3 Across VBAT
Range)
50
mV
DVload Load Regulation
5mA ≤ IREG3 ≤ 100mA
(Measure ∆VREG3 Across VLOAD
Range)
50
mV
VDROPOUT Dropout Voltage
(Measure VBAT - VREG3 when
VREG3 drops 0.1V)
IREG3 = 100mA
IREG3 = 5mA
0.5
V
0.04
V
Ilim3 Current Limit
200
mA
SVR3 Reg3 Supply Voltage Rejection
IREG1 = IREG2 = IREG3 = 50mA
f = 20 to 20kHz
VBAT = 14Vdc, 1Vac,pp
45
dB
DC Characteristics for Class 2 Transceiver
Standard Loads: IREG1 = 0.5mA, IREG2 = 0.5mA, IREG3 = 5mA
BUSih BUS Guaranteed
BUSil Input Voltages
Verify RX > 3 VDC
Verify RX < 3 VDC
4.25 3.7
V
3.50
V
BUSHyst BUS Hysteresis
BUSItoh - BUShhtol
0.15
V
BUSov BUS Output Voltage
TX = 5 VDC,
BUS = 257 to 1380Ω to gnd
VBAT - 8.2 to 16 VDC
VBAT - 6.0 to 8.2 VDC
TX = 0V
7.2
V
5
V
IBUSshort BUS Short Circuit Current
TX = 5VDC
BUS = -2 to 4.8VDC
170
mA
IBUSleak BUS Leakage Current
BUS = -2 to 0 VDC
BUS = 0 to VBAT
0
mA
0
mA
LOADON Load Output
ILOAD = 6mA
0.045
V
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