LT8705
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C unless otherwise specified.
Minimum Inductor Current Sense
Voltage in Forced Continuous Mode
INTVCC LineRegulation
(EXTVCC =0V)
INTVCC LineRegulation
(VIN =12V)
7.0
6.5
6.0
5.5
0
7.0
6.5
6.0
5.5
5.0
4.5
4.0
–20
BUCK REGION
BOOST REGION
–40
–60
EXTV RISING
CC
EXTV FALLING
CC
–80
–100
–120
–140
14 16
4
6
8
10 12
(V)
18 20
20
40
60
100
0
80
4
6
8
10
12
V
EXTV (V)
M2 OR M3 DUTY CYCLE (%)
IN
CC
8705 G11
8705 G10
8705 G12
VIN Supply Current vs Voltage
(Not Switching)
Maximum VC vs SS
IMONOutputCurrents
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
3.5
3.0
200
175
150
125
100
75
T = 25°C
J
GATEV CONNECTED TO INTV
CC
CC
BOOST AND
BUCK-BOOST REGIONS
BUCK
REGION
2.5
2.0
1.5
1.0
0.5
50
25
125°C
25°C
–40°C
0
0
–25
15
25
5
35
45
55
65
75
0
0.4 0.6 0.8 1.0 1.2 1.4
SS (V)
0.2
–100 –50
0
50
200
100
150
V
(V)
CSPIN-CSNIN (mV)
CSPOUT-CSNOUT (mV)
IN
8705 G14
8705 G13
8705 G15
LDO33 Pin Regulation
(ILDO33 = 1mA)
SHDN and SWEN Pin Thresholds
CLKOUT Duty Cycle
vs Temperature
100
3.5
3.0
2.5
2.0
1.5
1.30
1.28
1.26
1.24
1.22
1.20
1.18
1.16
1.14
1.12
1.10
80
60
RISING
40
20
0
FALLING
125°C
25°C
SHDN
SWEN
–40°C
50
TEMPERATURE (°C)
4
4.5
–15
5
65 85 105
125 145
–50 –25
0
25
75 100 125 150
2.5
5
5.5
6
–55 –35
25 45
3
3.5
INTV (V)
TEMPERATURE (°C)
CC
8705 G16
8705 G17
8705 G18
8705p
8
For more information www.linear.com/8705
Linear [ Linear ]
