LT1239 Просмотр технического описания (PDF) - Linear Technology
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LT1239 Datasheet PDF : 12 Pages
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ELECTRICAL CHARACTERISTICS
PARAMETER
Regulator 1 (Notes 7, 8)
Shutdown Threshold
Shutdown Pin Current (Note 13)
Quiescent Current in Shutdown (Note 10)
Ripple Rejection
Current Limit
Reverse Output Current
Current Monitor Pin Output Current
Comparator
Output Saturation Voltage (V5VIN – VOUT2)
Low-Battery Detector
Turn-Off Threshold
Turn-On Threshold
Hysteresis
Regulator 2
Regulated Output Voltage
Output Voltage Temperature Coefficient
Line Regulation
Load Regulation
Ground Pin Current
Shutdown Threshold
Shutdown Pin Current
Ripple Rejection
Current Limit
Reverse Output Current
Current Monitor Pin Output Current
Error Amplifier
Bias Current
CONDITIONS
VOUT1 = Off to On
VOUT1 = On to Off
VSHDN1 = 0V
VIN1 = 24V, VSHDN1 = 0V
VIN1 = 5V (Avg), VRIPPLE = 0.5VP-P
fRIPPLE = 120Hz, ILOAD = 20mA, TJ = 25°C
VIN1 = 7V, VOUT1 = 0V, TJ = 25°C
VOUT1 = VOUT1(NOM) – 100mV, TJ = 25°C
VOUT1 = 3.75V, VIN1 < 3.75V
VOUT1 = 3.75V, VIN1 = Open Circuit
VOUT1 = 3.75V, VIMON1 = 0V, IOUT1 = 1mA
VOUT1 = 3.75V, VIMON1 = 0V, IOUT1 = 10mA
VOUT1 = 3.75V, VIMON1 = 0V, IOUT1 = 50mA
VIN1 = 7V, VIN2 = 0V, V5VIN = 5V, IOUT2 = 1mA
VIN1 = 7V, VIN2 = 0V, V5VIN = 5V, IOUT2 = 30mA
VIN1 = 7V, VIN2 = 0V, V5VIN = 5V, IOUT2 = 50mA
TJ = 25°C
TJ = 25°C
TJ = 25°C
VIN2 = 6.8V, IOUT = 1mA, TJ = 25°C
IOUT2 = 1mA, VIN2 = 5.4V to 10V
VIN2 = 6.8V, ILOAD = 1mA to 30mA, TJ = 25°C
VIN2 = 6.8V, ILOAD = 1mA to 30mA
VIN2 = 6.8V, ILOAD = 1mA to 50mA, TJ = 25°C
VIN2 = 6.8V, ILOAD = 1mA to 50mA
ILOAD = 0mA, VIN2 = 5.4V
ILOAD = 30mA, VIN2 = 5.4V
ILOAD = 50mA, VIN2 = 5.4V
VOUT2 = Off to On
VOUT2 = On to Off
VSHDN2 = 0V
VIN2 = 6.4V (Avg), VRIPPLE = 0.5VP-P
fRIPPLE = 120Hz, ILOAD = 20mA, TJ = 25°C
VIN2 = 6.8V, VOUT2 = 0V, TJ 25°C
VOUT2 = VOUT2(NOM) – 100mV, TJ = 25°C
VOUT2 = 4.85V, VIN2 < 4.85V
VOUT2 = 4.85V, VIN2 = Open Circuit
VOUT2 = 6.8V, VIMON2 = 0V, IOUT2 = 1mA
VOUT2 = 6.8V, VIMON2 = 0V, IOUT2 = 10mA
VOUT2 = 6.8V, VIMON2 = 0V, IOUT2 = 50mA
VE/A(IN) = 3.4V, VIN2 = 6.8V
LT1239
MIN TYP MAX UNITS
q
1.20
2.8
V
q 0.25 0.75
V
q
2
4
µA
q
10
16
µA
50
59
dB
30
50
mA
40
70
mA
q
6
12
µA
q
6
12
µA
4.6
µA
q 38
44
50
µA
215
µA
q
12
40
mV
q
110 150
mV
q
135 220
mV
4.85 5.00 5.15
V
5.3
V
0.2
0.3
V
4.775
q
q
q
q
q
q
q 0.25
q
4.850
– 0.5
2
– 12
– 20
– 20
– 30
16
0.80
1.35
1.20
0.75
1.7
4.925
5
– 25
– 50
25
1.2
2.8
4
50
58
30
50
40
70
q
6
12
q
6
12
4.7
q 35
41
47
210
V
mV/°C
mV
mV
mV
mV
mV
µA
mA
mA
V
V
µA
dB
mA
mA
µA
µA
µA
µA
µA
q
3
20
nA
3
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