Datasheet

LTC3707-SYNC
7
3707sfa
V
IN
= 15V
V
OUT
= 5V
I
OUT5
= I
OUT3.3
= 2A
1μs/DIV
3707 G22
V
IN
200mV/DIV
I
IN
2A/DIV
V
SW2
10V/DIV
V
SW1
10V/DIV
V
IN
= 15V
V
OUT
= 5V
V
FCB
= OPEN
I
OUT
= 20mA
10μs/DIV
3707 G23
I
OUT
0.5A/DIV
V
OUT
20mV/DIV
V
IN
= 15V
V
OUT
= 5V
V
FCB
= 5V
I
OUT
= 20mA
2μs/DIV
3707 G24
I
OUT
0.5A/DIV
V
OUT
20mV/DIV
Input Source/Capacitor
Instantaneous Current (Figure 13) Burst Mode Operation (Figure 13)
Constant Frequency (Burst Inhibit)
Operation (Figure 13)
TYPICAL PERFORMANCE CHARACTERISTICS
TEMPERATURE (°C)
–50 –25
25
CURRENT SENSE INPUT CURRENT (μA)
29
35
0
50
75
3707 G26
27
33
31
25
100
125
V
OUT
= 5V
TEMPERATURE (°C)
–50 –25
0
EXTV
CC
SWITCH RESISTANCE (Ω)
4
10
0
50
75
3707 G27
2
8
6
25
100
125
TEMPERATURE (°C)
–50
200
250
350
25 75
3707 G28
150
100
–25 0
50 100 125
50
0
300
FREQUENCY (kHz)
V
PLLFLTR
= 2.4V
V
PLLFLTR
= 1.2V
V
PLLFLTR
= 0V
TEMPERATURE (°C)
–50
UNDERVOLTAGE LOCKOUT (V)
3.40
3.45
3.50
25 75
3707 G29
3.35
3.30
–25 0
50 100 125
3.25
3.20
TEMPERATURE (°C)
–50 –25
0
SHUTDOWN LATCH THRESHOLDS (V)
0.5
1.5
2.0
2.5
75 10050
4.5
3707 G30
1.0
0 25 125
3.0
3.5
4.0
LATCH ARMING
LATCHOFF
THRESHOLD
Undervoltage Lockout
vs Temperature
Shutdown Latch Thresholds
vs Temperature
Current Sense Pin Input Current
vs Temperature
EXTV
CC
Switch Resistance
vs Temperature
Oscillator Frequency
vs Temperature