Datasheet

5
LTC3718
3718fa
TYPICAL PERFOR A CE CHARACTERISTICS
UW
1.5 1.7 1.9 2.1 2.3 2.5 2.7 2.9
INPUT VOLTAGE (V)
FREQUENCY (kHz)
3718 G07
450
400
350
300
250
200
150
100
50
0
LOAD = 0A
V
OUT
= 1.25V
FIGURE 1 CIRCUIT
LOAD = 10A
LOAD CURRENT (A)
0
1 2 3 4 5 6 7 8 910
∆V
OUT
/V
OUT
(%)
3718 G08
0
–0.1
–0.2
–0.3
–0.4
–0.5
–0.6
V
IN
= 2.5V
V
OUT
= 1.25V
FIGURE 1 CIRCUIT
Frequency vs Input Voltage Load Regulation
Start-Up Response
V
IN
= 2.5V 4ms/DIV 3718 G09.eps
V
OUT
= 1.25V
LOAD = 0.2Ω
FIGURE 1 CIRCUIT
V
OUT
1V/DIV
I
L
2A/DIV
Load-Step Transient
V
IN
= 2.5V 20µs/DIV 3718 G10.eps
V
OUT
= 1.25V
LOAD = 500mA TO 10A STEP
FIGURE 1 CIRCUIT
V
OUT
200mV/DIV
I
L
5A/DIV
V
ON
VOLTAGE (V)
0
ON-TIME (ns)
400
600
3718 G11
200
0
1
2
3
1000
I
ION
= 30µA
800
TEMPERATURE (°C)
–50
ON-TIME (ns)
200
250
300
25 75
3718 G12
150
100
–25 0
50 100 125
50
0
I
ION
= 30µA
I
ON
CURRENT (µA)
1
10
ON-TIME (ns)
100
1k
10k
10 100
3718 G13
V
VON
= 0V
On-Time vs V
ON
Voltage
On-Time vs Temperature On-Time vs I
ON
Current