Datasheet

LT8705
8
8705fb
For more information www.linear.com/LT8705
Typical perForMance characTerisTics
IMON Output Currents
CLKOUT Duty Cycle
LDO33 Pin Regulation
(I
LDO33
= 1mA)
SHDN and SWEN Pin Thresholds
vs Temperature
INTV
CC
Line Regulation
(EXTV
CC
= 0V)
INTV
CC
Line Regulation
(V
IN
= 12V)
Maximum V
C
vs SS
Minimum Inductor Current Sense
Voltage in Forced Continuous Mode
V
IN
Supply Current vs Voltage
(Not Switching)
M2 OR M3 DUTY CYCLE (%)
0
–40
–20
0
80
8705 G10
–60
–80
20 40 60 100
–100
–120
–140
–|CSP-CSN| (mV)
BUCK REGION
BOOST REGION
V
IN
(V)
4
4.0
INTV
CC
(V)
4.5
5.0
5.5
6.0
8 12
16
20
8705 G11
6.5
7.0
6 10
14
18
EXTV
CC
(V)
4
5.5
INTV
CC
(V)
6.0
6.5
7.0
6 8
8705 G12
10 12
EXTV
CC
RISING
EXTV
CC
FALLING
SS (V)
0
0
MAXIMUM V
C
(V)
0.2
0.6
0.8
1.0
2.0
1.4
0.4
0.8
1.0 1.2
8705 G13
0.4
1.6
1.8
1.2
0.2
0.6
1.4
BOOST AND
BUCK-BOOST REGIONS
BUCK
REGION
T
J
= 25°C
V
IN
(V)
5
I
IN
(mA)
2.0
2.5
3.0
65 7535 45 55
8705 G14
1.5
1.0
15 25
0.5
0
3.5
GATEV
CC
CONNECTED TO INTV
CC
125°C
25°C
–40°C
CSPIN-CSNIN (mV)
CSPOUT-CSNOUT (mV)
–100
–25
IMON_OUT, IMON_IN (µA)
0
50
75
100
100
200
8705 G15
25
0
–50
150
50 200
125
150
175
TEMPERATURE (°C)
–50
DUTY CYCLE (%)
60
80
100
25 75 150
8705 G16
40
20
0
–25 0
50
100 125
INTV
CC
(V)
2.5
LDO (V)
2.5
3.0
6
8705 G17
2.0
1.5
3
4
3.5
4.5
5 5.5
3.5
125°C
25°C
–40°C
TEMPERATURE (°C)
–55
PIN THRESHOLD VOLTAGE (V)
1.22
1.26
1.30
125
8705 G18
1.18
1.14
1.20
1.24
1.28
1.16
1.12
1.10
–15
25
65 85
–35 145
5
45
105
RISING
FALLING
SHDN
SWEN
T
A
= 25°C unless otherwise specified.