Datasheet

4
LTC1707
Maximum Output Current vs
Input Voltage
Switch Leakage Current
vs Temperature
Switch Resistance
vs Input Voltage Load Step Transient Response
INPUT VOLTAGE (V)
2.5
0
OUTPUT CURRENT (mA)
200
400
600
6.5
1000
1707 G10
4.5
3.5
7.5
5.5 8.5
800
T
J
= 85°C
L = 15µH
V
OUT
= 5V
V
OUT
= 1.5V
V
OUT
= 2.5V
V
OUT
= 2.9V
V
OUT
= 3.3V
V
OUT
= 1.8V
TEMPERATURE (°C)
–50 –25
0
SWITCH LEAKAGE (nA)
200
600
800
1000
75 100
1800
1707 G11
400
0 25 50 125
1200
1400
1600
V
IN
= 8.4V
SYNCHRONOUS
SWITCH
MAIN
SWITCH
Switch Resistance
vs Temperature
TEMPERATURE (°C)
–50 –25
0
SWITCH RESISTANCE (Ω)
0.1
0.3
0.4
0.5
75 100
0.9
1707 G12
0.2
0 25 50 125
0.6
0.7
0.8
V
IN
= 5V
SYNCHRONOUS
SWITCH
MAIN
SWITCH
Burst Mode Operation
INPUT VOLTAGE (V)
2.5
0
SWITCH RESISTANCE (Ω)
0.1
0.3
0.4
0.5
6.5
0.9
1707 G13
0.2
4.5
3.5
7.5
5.5 8.5
0.6
0.7
0.8
SYNCHRONOUS SWITCH
MAIN SWITCH
I
TH
0.5V/DIV
V
OUT
50mV/DIV
AC COUPLED
I
LOAD
500mA/DIV
25µs/DIV
1707 G14
SW
5V/DIV
V
OUT
20mV/DIV
AC COUPLED
I
LOAD
200mA/DIV
10µs/DIV
1707 G15
V
IN
= 5V
V
OUT
= 3.3V
L = 15µH
C
IN
= 22µF
C
OUT
= 100µF
I
LOAD
= 0mA TO 500mA
Burst Mode OPERATION
TYPICAL PERFOR A CE CHARACTERISTICS
UW
V
IN
= 5V
V
OUT
= 3.3V
L = 15µH
C
IN
= 22µF
C
OUT
= 100µF
I
LOAD
= 50mA