L4903
ABSOLUTE MAXIMUM RATINGS
Symbol
VIN
Vt
Ptot
Tstg, Tj
Parameter
DC Input Voltage
Transient Input Overvoltage (t = 40ms)
Power Dissipation at Tamb = 50°C
Storage and Junction Temperature
Value
Unit
24
V
60
V
1
W
– 40 to 150
°C
THERMAL DATA
Symbol
Rth (j-pin)
Rth (j-a)
Parameter
Thermal Resistance Junction-pin 4
Thermal Resistance Junction-ambient
Max.
Max.
Value
70
100
Unit
°C/W
°C/W
ELECTRICAL CHARACTERISTICS (VIN = 14.4V, Tamb = 25oC unless otherwise specified)
Symbol
Vi
V01
V02 H
V02 L
I01
IL01
I02
VI01
VIT
VIT H
∆V01
∆V02
∆V01
∆V02
IQ
IQ1
VRT
VRTH
VRH
VRL
tRD
td
VDT
ID
∆∆VT01,
∆V02
∆T
SVR1
SVR2
TJSD
Parameter
DC Operating Input Voltage
Output Voltage 1
Output Voltage 2 HIGH
Output Voltage 2 LOW
Output Current 1 max. (*)
Leakage Output 1 Current
Output Current 2 max. (*)
Output 1 Dropout Voltage (*)
Input Threshold Voltage
Input Threshold Voltage Hyst.
Line Regulation 1
Line Regulation 2
Load Regulation 1
Load Regulation 2
Quiescent Current
Quiescent Current 1
Reset Threshold Voltage
Reset Threshold Hysteresis
Reset Output Voltage HIGH
Reset Output Voltage LOW
Reset Pulse Delay
Timing Capacitor Discharge
Time
V02 Disable Threshold Voltage
V02 Disable Input Current
Thermal Drift
Supply Voltage Rejection
Supply Voltage Rejection
Thermal Shut Down
Test Conditions
R Load 1kΩ
R Load 1kΩ
I02 = – 5mA
∆V01 = – 100mV
VIN = 0, V01 ≤ 3V
∆V02 = – 100mV
I01 = 10mA
I01 = 50mA
7V < VIN < 18V, I01 = 5mA
7V < VIN < 18V, I02 = 5mA
VIN1 = 8V, 5mA < I01 < 50mA
VIN1 = 8V, 5mA < I02 < 100mA
I01 = I02 ≤ 5mA
0 < VIN < 13V
7V < VIN < 13V V02 LOW
7V < VIN < 13V V02 HIGH
6.3V < VIN1 < 13V, VIN2 = 0
I01 ≤ 5mA, I02 = 0
IR = 500µA
IR = – 5mA
Ct = 10nF
Ct = 10nF
VD ≤ 0.4V
VD ≥ 2.4V
– 20°C ≤ Tamb ≤ 125°C
f = 100Hz, VR = 0.5V, Io = 50mA
f = 100Hz, VR = 0.5V, Io =
100mA
Min.
4.95
V01 –0.1
50
100
V01 + 1.2
V02 – 0.04
30
V02 – 1
3
50
50
Typ.
5.05
5
0.1
0.7
0.75
6.4
250
5
5
5
10
4.5
2.7
1.6
0.6
4.7
50
4.12
0.25
5
1.25
- 150
30
0.3
- 0.8
84
80
150
Max.
20
5.15
V01
1
0.8
0.9
V01 + 1.7
50
50
20
50
6.5
4.5
3.5
0.9
V02 – 0.02
80
V02
0.4
11
20
2.4
Unit
V
V
V
V
mA
µA
mA
V
V
V
mV
mV
mV
mV
mV
mA
mA
V
mV
V
V
ms
µs
V
µA
µA
mV/°C
dB
dB
°C
* The dropout voltage is defined as the difference between the input and the output voltage when the output voltage is lowered of 25 mV under
constant output current condition.
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