3728L1 View Datasheet(PDF) - Linear Technology
Part Name
Description
MFG CO.
'3728L1' PDF : 32 Pages View PDF
TYPICAL PERFORMANCE CHARACTERISTICS
LTC3728L-1
Input Source/Capacitor
Instantaneous Current (Figure 13)
Burst Mode Operation (Figure 13)
Constant Frequency (Burst Inhibit)
Operation (Figure 13)
IIN
2A/DIV
VIN
200mV/DIV
VSW1
10V/DIV
VSW2
10V/DIV
VOUT
20mV/DIV
IL
0.5A/DIV
VOUT
20mV/DIV
IL
0.5A/DIV
VIN = 15V
1μs/DIV
VOUT1 = 5V, VOUT2 = 3.3V
VPLLFLTR = 0V
IOUT5 = IOUT3.3 = 2A
3728L1 G22
VIN = 15V
VOUT = 5V
VPLLFLTR = 0V
VFCB = 5V
IOUT = 20mA
10μs/DIV
3728L1 G23
VIN = 15V
VOUT = 5V
VPLLFLTR = 0V
VFCB = 5V
IOUT = 20mA
2μs/DIV
3728L1 G24
Current Sense Pin Input Current
vs Temperature
35
VOUT = 5V
33
31
29
27
25
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3728L1 G26
Oscillator Frequency
vs Temperature
700
600
VPLLFLTR = 2.4V
500
VPLLFLTR = 1.2V
400
300
VPLLFLTR = 0V
200
100
0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3728L1 G28
EXTVCC Switch Resistance
vs Temperature
10
8
6
4
2
0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3728L1 G27
Undervoltage Lockout
vs Temperature
3.50
3.45
3.40
3.35
3.30
3.25
3.20
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3728L1 G29
3728l1fc
7
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