LTC3701 View Datasheet(PDF) - Linear Technology
Part Name
Description
MFG CO.
'LTC3701' PDF : 20 Pages View PDF
LTC3701
TYPICAL PERFOR A CE CHARACTERISTICS
Undervoltage Lockout Trip
Voltage (Falling) vs Temperature
2.15
2.10
2.05
2.00
1.95
1.90
1.85
–60 –40 –20 0 20 40 60
TEMPERATURE (°C)
80 100
3701 G04
Undervoltage Lockout Trip
Voltage (Rising) vs Temperature
2.20
2.18
2.16
2.14
2.12
2.10
2.08
2.06
2.04
2.02
2.00
–60 –40 –20 0 20 40 60 80 100
TEMPERATURE (°C)
3701 G05
Maximum Current Sense
Threshold vs Temperature
125
120
115
110
105
100
–60 –40 –20 0 20 40 60
TEMPERATURE (°C)
80 100
3701 G06
Input and Shutdown Currents vs
Input Voltage
600
PULSE SKIPPING MODE OPERATION
500
(EXTCLK/MODE = 0V)
400
BURST MODE OPERATION
(EXTCLK/MODE = VIN)
300
200
FIGURE 1 CIRCUIT
LOAD CURRENT = 0A
100
SHUTDOWN
(ITH/RUN1,2 = 0V)
0
2 3 4 5 6 7 8 9 10 11
INPUT VOLTAGE (V)
3701 G07
PGOOD RON vs Input Voltage
500
IPGOOD = 500µA
450
400
350
300
250
200
150
100
50
0
0 1 2 3 4 5 6 7 8 9 10
INPUT VOLTAGE (V)
3701 G09
Efficiency vs Load Current (Pulse
Skipping Mode)
100
FIGURE 1 CIRCUIT
EXTCLK/MODE = GND
90 VOUT = 2.5V
VIN = 3.3V
80
VIN = 8.4V
70
VIN = 6V
60
VIN = 4.2V
50
40
1
10
100
100O
LOAD CURRENT (mA)
1OOOO
3701 G08
2-Phase Operation
SW1
5V/DIV
SW2
5V/DIV
INPUT
CURRENT
1A/DIV
FIGURE 1 CIRCUIT
500ns/DIV
3701fa
4
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