Datasheet

LTC3600
6
3600fc
Typical perForMance characTerisTics
Switching Frequency/Period vs RT
Switch Leakage Current
Continuous Conduction
Mode Operation
Discontinuous Conduction
Mode Operation
INTV
CC
Load Regulation
INTV
CC
CURRENT (mA)
0
INTV
CC
VOLTAGE (V)
4.90
5.00
20
40
60
4.96
4.88
4.98
4.86
4.94
4.92
10
30
80
100
50
70
90
3600 G17
V
SW
5V/DIV
I
L
1A/DIV
3600 G13
V
IN
= 15V
V
OUT
= 2.5V
MODE = 0
L = 2.2µH
V
SW
5V/DIV
I
L
1A/DIV
3600 G14
V
IN
= 15V
V
OUT
= 2.5V
MODE = INTV
CC
L = 2.2µH
TEMPERATURE (°C)
–50 –30 –10
LEAKAGE CURRENT (µA)
4
10
2
8
0
6
130
50 70 90 11010 30
3600 G16
V
IN
= 12V
MBOT
MTOP
RT (kΩ)
0
FREQUENCY (MHz)
PERIOD (µs)
1.0
3.5 6
5
4
3
2
1
0
50
2.5
0.5
3.0
0
2.0
1.5
150
200
100
3600 G15
t
SW
f
SW
Output Tracking
Transient Response DCM,
Operation, External Compensation
Transient Response DCM,
Operation, Internal Compensation
1ms/DIV
I
SET
VOLTAGE
V
OUT
2V/DIV
I
INDUCTOR
CURRENT
500mA/DIV
3600 G12
I
SET
VOLTAGE
V
OUT
20µs/DIV
V
OUT
100mV/DIV
AC-
COUPLED
I
L
1A/DIV
3600 G10
V
IN
= 12V
V
OUT
= 3.3V
I
OUT
= 0.1A TO 1A
L
= 4.7µH
f
SW
= 1MHz
R
ITH
= 27.5kΩ, C
ITH
= 250pF
MODE = 0
C
OUT
= 47µF
20µs/DIV
V
OUT
100mV/DIV
AC-
COUPLED
I
L
1A/DIV
3600 G11
V
IN
= 12V
V
OUT
= 3.3V
I
OUT
= 0.1A TO 1A
L
= 4.7µH
f
SW
=1MHz
ITH = INTV
CC
MODE = 0
C
OUT
= 47µF