Datasheet

LTC3816
6
3816f
Typical perForMance characTerisTics
Efficiency vs V
IN
with V
EXTVCC
= 5V
V
CC(CORE)
vs Temperature
Load Regulation with
AVP Slope = –3mV/A
Efficiency vs Load Current Efficiency vs V
CC(CORE)
Efficiency vs V
IN
with V
EXTVCC
= 0V
LOAD CURRENT (A)
30
EFFICIENCY (%)
90
100
20
10
80
50
70
60
40
0.01 1 10
3816 G01
0
0.1
V
IN
= 12V, f
OSC
= 400kHz
V
CC(CORE)
= 0.75V, V
EXTVCC
= 0V
LAST PAGE CIRCUIT
PULSE-SKIPPING
MODE
FORCED CONTINUOUS
MODE
LOAD CURRENT (A)
30
EFFICIENCY (%)
90
100
20
10
80
50
70
60
40
0.01 1 10
3816 G02
0
0.1
V
IN
= 12V, f
OSC
= 400kHz, V
EXTVCC
= 0V
FORCED CONTINOUS MODE
LAST PAGE CIRCUIT
V
CC(CORE)
= 0.50V
V
CC(CORE)
= 0.75V
V
CC(CORE)
= 1.00V
V
CC(CORE)
= 1.20V
LOAD CURRENT (A)
30
EFFICIENCY (%)
90
100
20
10
80
50
70
60
40
0.01 1 10
3816 G03
0
0.1
V
CC(CORE)
= 0.75V, f
OSC
= 400kHz
V
EXTVCC
= 0V
FORCED CONTINOUS MODE
LAST PAGE CIRCUIT
V
IN
= 5V
V
IN
= 12V
V
IN
= 24V
LOAD CURRENT (A)
30
EFFICIENCY (%)
90
100
20
10
80
50
70
60
40
0.01 1 10
3816 G04
0
0.1
V
CC(CORE)
= 0.75V, f
OSC
= 400kHz
V
EXTVCC
= 5V
FORCED CONTINOUS MODE
LAST PAGE CIRCUIT
V
IN
= 12V
V
IN
= 24V
Efficiency vs f
OSC
with
V
EXTVCC
= 0V
LOAD CURRENT (A)
30
EFFICIENCY (%)
90
100
20
10
80
50
70
60
40
0.01 1 10
3816 G05
0
0.1
V
IN
= 12V, V
CC(CORE)
= 0.75V
V
EXTVCC
= 0V
FORCED CONTINOUS MODE
LAST PAGE CIRCUIT
f
OSC
= 210kHz
f
OSC
= 400kHz
f
OSC
= 580kHz
Efficiency vs f
OSC
with
V
EXTVCC
= 5V
LOAD CURRENT (A)
30
EFFICIENCY (%)
90
100
20
10
80
50
70
60
40
0.01 1 10
3816 G06
0
0.1
V
IN
= 12V, V
CC(CORE)
= 0.75V
V
EXTVCC
= 5V
FORCED CONTINOUS MODE
LAST PAGE CIRCUIT
f
OSC
= 210kHz
f
OSC
= 400kHz
f
OSC
= 580kHz
TEMPERATURE (°C)
–50
0.745
V
CC(CORE)
(V)
0.746
0.748
0.749
0.750
0.755
0.752
0
50
75
3816 G07
0.747
0.753
0.754
0.751
–25
25
100
125
LOAD CURRENT (A)
0
–80
∆V
CC(CORE)
(mV)
–70
–50
–40
–30
16
10
3816 G08
–60
8
4
20 24
12 28
–20
–10
0
V
CC(CORE)
= 0.5V
V
CC(CORE)
= 1.2V
V
IN
= 12V, f
OSC
= 400kHz
V
EXTVCC
= 0V
AVP SLOPE = –3mV/A
FORCED CONTINOUS MODE
LAST PAGE CIRCUIT