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LT3595
ELECTRICAL CHARACTERISTICS The ● denotes the speci?cations which apply over the full operating
temperature range, otherwise speci?cations are at T A = 25°C, V IN = 45V, V CC = 3.3V, PWM = ? S ? H ? D ? N = ? O ? P ? E ? N ? L ? E ? D = 3.3V, R SET = 75k Ω ,
GND = 0V, unless otherwise noted.
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V IN Operating Voltage
4.5
V
V CC Operating Voltage
V CC Input Under Voltage Lockout
3
2.6
5.5
2.9
V
V
I VIN Quiescent Current ON, No Switching
V IN = 45V
0.25
mA
I VIN Quiescent Current in Shutdown
I VCC Quiescent Current ON, No Switching
I VCC Quiescent Current in Shutdown
V IN = 45V, ? S ? H ? D ? N = 0V
V CC = 3.3V
V CC = 3.3V, ? S ? H ? D ? N = 0V
15
17
3
40
10
μA
mA
μA
I L1-16 Output Current Accuracy
Switching Frequency
Maximum Duty Cycle
R SET = 75.0k Ω
●
18.4
1.6
78
20
2
83
21.6
2.4
mA
MHz
%
Switch Current Limit
Switch V CESAT
Switch Leakage Current
Schottky Forward Drop
Schottky Leakage Current
ISW1-16 = 50mA
VSW1-16 = 45V
I SCHOTTKY = 50mA
V IN = 45V, V SW1-16 = 0.7V, ? S ? H ? D ? N = 0V
●
90
120
450
0.1
0.8
0.1
150
6
4
mA
mV
μA
V
μA
? S ? H ? D ? N, PWM1-16 Input Low Voltage
? S ? H ? D ? N, PWM1-16 Input High Voltage
1.6
0.4
V
V
? S ? H ? D ? N Pin Bias Current
? S H ? ? D ? N = 3.3V
35
μA
PWM1-16 Pin Bias Current
? O P ? ? E ? N ? L ? E ? D Pin Voltage
? O ? P ? E ? N ? L ? E ? D Pin Input Leakage Current
PWM1-16 = 3.3V
V CC = 3.3V, I ? O ? P ? E ? N ? L ? E ? D = 200μA
? O ? P ? E ? N ? L ? E ? D = 3.3V
0.1
0.12
0.1
1
1
μA
V
μA
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: The LT3595 is guaranteed to meet performance speci?cations
from 0°C to 85°C junction temperature. Speci?cations over the –40°C
to 85°C operating junction temperature range are assured by design,
characterization and correlation with statistical process controls.
3595f
3
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