Datasheet

LTC3621/LTC3621-2
6
3621fb
For more information www.linear.com/LTC3621
Typical perForMance characTerisTics
R
DS(ON)
vs Temperature Load Regulation
Line Regulation
Efficiency vs Load at 1MHz
V
IN
Supply Current
vs Temperature
Switch Leakage
vs Temperature
Oscillator Frequency
vs Supply Voltage
Reference Voltage
vs Temperature
R
DS(ON)
vs Input Voltage
T
J
= 25°C, unless otherwise noted.
SUPPLY VOLTAGE (V)
2
OSCILLATOR FREQUENCY (MHz)
3621 G10
7
12
17
2.30
2.35
2.45
2.50
2.40
2.25
2.20
2.15
2.05
2.00
2.10
INPUT VOLTAGE (V)
100
R
DS(ON)
(mΩ)
300
500
700
200
400
600
4 8 12 16
3621 G12
2020 6 10 14 18
TOP FET
BOTTOM FET
TEMPERATURE (°C)
–50
100
R
DS(ON)
(mΩ)
150
250
300
350
600
450
0
50
75 100
3621 G13
200
500
550
400
–25
25
125
TOP FET
BOTTOM FET
LOAD CURRENT (mA)
0
–5
∆V
OUT
(%)
500
5
3621 G14
1000
1500
4
3
2
1
0
–1
–2
–3
–4
V
IN
= 12V
V
OUT
= 3.3V
FORCED CONTINUOUS MODE
INPUT VOLTAGE (V)
0
–0.5
∆V
OUT
ERROR (%)
4321
0.5
3621 G15
8765 11109 12
17
16151413
0.3
0.1
–0.1
–0.3
TEMPERATURE (°C)
–50
V
IN
SUPPLY CURRENT (µA)
4
5
6
25 75
3521 G17
3
2
–25 0
50 100 125
1
0
SLEEP
SHUTDOWN
TEMPERATURE (°C)
–100 –50
REFERENCE VOLTAGE
599.5
600.0
600.5
3521 G11
599.0
598.5
0
50 100
150
598.0
597.5
TEMPERATURE (°C)
–50
0
SW LEAKAGE (µA)
0.01
0.03
0.04
0.05
50
0.09
3621 G18
0.02
0
–25
75 100
25 125
0.06
0.07
0.08
BOTTOM FET
TOP FET
LOAD CURRENT (A)
EFFICIENCY (%)
3621 G16
100
90
80
70
60
50
40
30
20
10
0
0.0001 0.001 0.1
1
0.01
V
IN
= 12V
V
OUT
= 2.5V
V
OUT
= 3.3V
V
OUT
= 5V