LT3669 View Datasheet(PDF) - Linear Technology
Part Name
Description
Manufacturer
LT3669 Datasheet PDF : 40 Pages
| |||
LT3669/LT3669-2
TYPICAL PERFORMANCE CHARACTERISTICS
Buck Load Regulation
1.0
LT3669-2
0.8 f = 600kHz, L = 33µH
0.6 REFERENCED TO VOUT AT 150mA LOAD
0.4
0.2
0
−0.2
−0.4
−0.6 LT3669
−0.8 FRONT PAGE APPLICATION
REFERENCED TO VOUT AT 50mA LOAD
−1.0
0 50 100 150 200 250 300
BUCK LOAD CURRENT (mA)
36692 G28
Buck Load Transient Response
IOUT
200mA/DIV
20mA
VOUT
200mV/DIV
LT3669-2
COUT = 22µF
f = 600kHz, L = 33µH
VOUT = 5V
IOUT
200mA/DIV
10mA
VOUT
200mV/DIV
LT3669
FRONT PAGE
APPLICATION
100µs/DIV
VOUT = 5V
36692 G29
LDO Dropout Voltage
400
350
ILOAD = 150mA
300
250
200
150
100
ILOAD = 30mA
50
0
–50 –25
0 25 50 75 100 125 150
TEMPERATURE (°C)
36692 G30
LDO Current Limit
220
200
VL+ = 24V
VLDOIN – VLDO = 5V
180
160
140
120
100
VLDOIN – VLDO = 24V
80
60
VLDOIN – VLDO = 30V
40
VLDOIN – VLDO = 40V
20
–50 –25
0 25 50 75 100 125 150
TEMPERATURE (°C)
36692 G31
LDO Current Limit Foldback
200
180
160
140
120
100
80
60
40
20
0
5 10 15 20 25 30 35 40
VLDOIN – VLDO (V)
36692 G32
LDO Minimum Load Current
450
VLDO = 300mV
400
VLDO = 400mV
VLDO = 500mV
VLDO = 600mV
350
VLDO = 700mV
300
250
200
150
100
–50 –25
0 25 50 75 100 125 150
TEMPERATURE (°C)
36692 G33
LDO Load Regulation
0
REFERENCED TO VLDO AT 0mA LOAD
−0.01
−0.02
−0.03
−0.04
LDO Load Transient Response
VLDO = 3.3V
CLDO = 1µF
VLDO
100mV/DIV
−0.05
−0.06
−0.07
−0.08
−0.09
ILDO
100mA/DIV
5mA
100µs/DIV
36692 G35
−0.10
0
25 50 75 100 125 150
LDO LOAD CURRENT (mA)
36692 G34
3669fa
10
For more information www.linear.com/LT3669
Share Link: 