Datasheet

LTC3600
5
3600fc
Typical perForMance characTerisTics
R
DS(ON)
vs Temperature
Load Regulation
Transient Response CCM
Operation, External Compensation
Transient Response CCM
Operation, Internal Compensation
Quiescent Current vs
Temperature
Shutdown I
Q
vs V
IN
TEMPERATURE (°C)
–50
R
DS(ON)
(mΩ)
40
260
180
200
220
240
0
120
100
20
140
160
0
80
60
100
150
50
3600 G07
MBOT
MTOP
TEMPERATURE (°C)
–100 –50
QUIESCENT CURRENT (mA)
1.0
4.0
0
2.5
2.0
0.5
3.0
3.5
0
1.5
100
200150
50
3600 G05
CCM
DCM
I
OUT
(A)
0
NORMALIZED V
ISET
AND V
OUT
(%)
0.2 0.4 0.6 0.8
99
96
100
95
98
97
1.8
1 1.2 1.4 1.6
3600 G01
V
IN
= 12V
V
OUT
= 3.3V
V
ISET
V
OUT
20µs/DIV
V
OUT
100mV/DIV
AC-
COUPLED
I
L
1A/DIV
3600 G08
V
IN
= 12V
V
OUT
= 3.3V
I
OUT
= 0A TO 1A
L
= 4.7µH
f
SW
= 1MHz
R
ITH
= 27.5kΩ, C
ITH
= 250pF
MODE = INTV
CC
C
OUT
= 47µF
20µs/DIV
V
OUT
100mV/DIV
AC-
COUPLED
I
L
1A/DIV
3600 G09
V
IN
= 12V
V
OUT
= 3.3V
I
OUT
= 0A TO 1A
L
= 4.7µH
f
SW
= 1MHz
ITH = INTV
CC
MODE = INTV
CC
C
OUT
= 47µF
V
IN
0 2
I
Q
(µA)
0.2
1.0
4 6
0.5
0.4
0.1
0.6
0.7
0.8
0.9
0
0.3
10
1612 14
8
3600 G06
V
RUN
= 0
I
SET
Current vs Temperature
TEMPERATURE (°C)
–50
I
SET
(µA)
50.3
125
50.1
49.9
0
50
–25
25
75 100 150
49.7
49.5
50.5
3600 G02
I
SET
Current vs V
ISET
V
ISET
0
I
SET
(µA)
51
42
48
45
49
50
44
47
46
1210 14
16
86
3600 G03
V
IN
=15V
I
SET
Current Line Regulation
V
IN
0
I
SET
(µA)
50.4
42
49.8
49.4
50.0
50.2
49.2
49.6
1210 14
16 18
86
3600 G04
I
SET
(V
ISET
= 0V)
I
SET
(V
ISET
= 2.5V)