Datasheet

LTC3631
4
3631fe
For more information www.linear.com/LTC3631
Typical perForMance characTerisTics
Efficiency vs Load Current,
V
OUT
= 5V
Efficiency vs Input Voltage Line Regulation Load Regulation
Feedback Comparator Trip
Voltage vs Temperature
Feedback Comparator Hysteresis
vs Temperature
Peak Current Trip Threshold
vs Temperature and I
SET
Efficiency vs Load Current,
V
OUT
= 3.3V
Efficiency vs Load Current,
V
OUT
= 2.5V
LOAD CURRENT (mA)
0.1
80
EFFICIENCY (%)
85
90
95
1 10 100
3631 G01
75
70
65
60
V
OUT
= 5V
FIGURE 10 CIRCUIT
V
IN
= 12V
V
IN
= 36V
V
IN
= 24V
LOAD CURRENT (mA)
0.1
80
EFFICIENCY (%)
85
90
95
1 10 100
3631 G02
75
70
65
60
V
OUT
= 3.3V
FIGURE 10 CIRCUIT
V
IN
= 12V
V
IN
= 36V
V
IN
= 24V
LOAD CURRENT (mA)
0.1
70
EFFICIENCY (%)
80
90
1 10 100
3631 G03
60
65
75
85
55
50
V
OUT
= 2.5V
FIGURE 10 CIRCUIT
V
IN
= 12V
V
IN
= 36V
V
IN
= 24V
INPUT VOLTAGE (V)
10
EFFICIENCY (%)
85
90
95
25 35
3631 G04
80
75
15 20
30 40 45
70
65
V
OUT
= 5V
FIGURE 10 CIRCUIT
I
LOAD
= 100mA
I
LOAD
= 10mA
I
LOAD
= 1mA
INPUT VOLTAGE (V)
105
–0.20
∆V
OUT
/V
OUT
(%)
–0.10
0
0.10
0.20
15 20 25 30
3631 G05
35 40 45
I
LOAD
= 100mA
FIGURE 10 CIRCUIT
LOAD CURRENT (mA)
0
4.96
OUTPUT VOLTAGE (V)
4.97
4.99
5.00
5.01
60 80
5.05
3631 G06
4.98
20 40
10
70 90
30 50 100
5.02
5.03
5.04
V
IN
= 10
V
OUT
= 5V
FIGURE 10 CIRCUIT
TEMPERATURE (°C)
–40
0.798
FEEDBACK COMPARATOR TRIP VOLTAGE (V)
0.799
0.800
0.801
–10 20 50 80
LTC1144 • TPC06
110
V
IN
= 10V
TEMPERATURE (°C)
–40
4.4
FEEDBACK COMPARATOR HYSTERESIS (mV)
4.6
4.8
5.0
5.2
5.4
5.6
–10 20 50 80
3631 G08
110
V
IN
= 10V
TEMPERATURE (°C)
–40
0
PEAK CURRENT TRIP THRESHOLD (mA)
50
100
150
–10
20
50
3631 G09
80
200
250
25
75
125
175
225
110
V
IN
= 10V
I
SET
= OPEN
I
SET
= GND
R
SET
= 500k