Linear Technology Analog Devices LT8708, Datasheet, Page: 10 / 64

LT8708
10
Rev 0
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TYPICAL PERFORMANCE CHARACTERISTICS
Minimum Inductor Current Sense
Voltage vs Duty Cycle
INTV
CC
Line Regulation
(EXTV
CC
= 0V)
Minimum Inductor Current Sense
Voltage at Minimum Duty Cycle
Maximum and Minimum V
C
vs SS
INTV
CC
Line Regulation
(V
IN
= 12V) IMONx, ICx Output Current
CLKOUT Duty Cycle
LDO33 Pin Regulation
(I
LDO33
= 1mA)
V
IN
Supply Current vs Voltage
(Not Switching)
BUCK REGION
BOOST REGION
M2 OR M3 DUTY CYCLE (%)
0 20 40 60 80 100
–140
–120
–100
–80
–60
–40
–20
0
–|CSP–CSN| (mV)
8708 G10
V
IN
(V)
4 6 8 10 12 14 16 18 20
4.0
4.5
5.0
5.5
6.0
6.5
7.0
INT
V
CC
(V)
8708 G11
BUCK REGION
BOOST REGION
TEMPERATURE (°C)
–45 –20 5 30 55 80 105 130 155
–120
–100
–80
–60
–40
–20
0
–|CSP–CSN| (mV)
8708 G12
BUCK REGION
BOOST REGION
MINIMUM V
C
MAXIMUM V
C
T
J
= 25°C
SS (V)
0 0.3 0.6 0.9 1.2 1.5
0
0.5
1.0
1.5
2.0
2.5
V
C
(V)
Maximum and Minimum V
C
vs SS
8708 G13
EXTV
CC
RISING
EXTV
CC
FALLING
EXTV
CC
(V)
4 6 8 10 12
5.5
6.0
6.5
7.0
INT
V
CC
(V)
8708 G14
CSPIN–CSNIN (mV)
CSPOUT–CSNOUT (mV)
–200 –100 0 100 200
–25.0
0
25.0
50.0
75.0
100.0
125.0
150.0
175.0
200.0
225.0
250.0
IMONX, ICX CURRENT (µA)
8708 G15
IMON_INN
IMON_ON
ICN
IMON_INP
IMON_OP
ICP
TEMPERATURE (°C)
–45 –20 5 30 55 80 105 130 155
0
20
40
60
80
100
DUT
Y CYCLE (%)
CLKOUT Duty Cycle
8708 G16
150°C
–45°C
25°C
INTV
CC
(V)
2.5 3 3.5 4 4.5 5 5.5 6 6.5
1.5
2.0
2.5
3.0
3.5
LDO33 (V)
8708 G17
150°C
–45°C
25°C
V
IN
(V)
5 20 35 50 65 80
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
I
IN
(mA)
8708 G18