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LT3689EMSE-PBF Datasheet(PDF) 7 Page - Linear Technology

Part # LT3689EMSE-PBF
Description  700mA Step-Down Regulator with Power-On Reset and Watchdog Timer
Download  32 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LT3689EMSE-PBF Datasheet(HTML) 7 Page - Linear Technology

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LT3689/LT3689-5
7
3689fa
TYPICAL PERFORMANCE CHARACTERISTICS
EN/UVLO Pin Current
EN/UVLO Pin Threshold
Boost Diode Forward Voltage
EN/UVLO Hysteresis Current
Switching Waveform:
Burst Mode Operation
Switching Waveform:
Transition from Burst Mode
to Full Frequency
Switching Waveform:
Full Frequency Continuous Operation
Power-On-Reset Threshold
vs Temperature
VEN/UVLO (V)
3689 G22
05
10
15
20
30
25
35
6
7
5
4
1
0
3
2
TA = 150°C
TA = –50°C
TA = 25°C
TEMPERATURE (°C)
–50
1.200
1.220
1.240
1.260
–25
0
25
50
100
75
125
1.280
1.300
1.210
1.230
1.250
1.270
1.290
150
3689 G23
EN/UVLO THRESHOLD RISING
EN/UVLO THRESHOLD FALLING
VIN = 12V
BOOST DIODE CURRENT (mA)
3689 G24
010
20
30
40
50
600
700
800
500
400
100
0
300
900
200
TA = 150°C
TA = 25°C
TA = –50°C
TEMPERATURE (°C)
3.0
3.5
4.0
4.5
5.0
3689 G25
–50 –25
0
25
50
100
75
125 150
5μs/DIV
VOUT
10mV/DIV
VIN = 12V, FRONT PAGE APPLICATION
ILOAD = 6mA
VSW
5V/DIV
IL
0.2A/DIV
3689 G26
1μs/DIV
VOUT
10mV/DIV
VIN = 12V, FRONT PAGE APPLICATION
ILOAD = 60mA
VSW
5V/DIV
IL
0.2A/DIV
3689 G27
1μs/DIV
VOUT
10mV/DIV
VIN = 12V, FRONT PAGE APPLICATION
ILOAD = 600mA
VSW
10V/DIV
IL
0.5A/DIV
3689 G28
TEMPERATURE (°C)
0.710
0.715
0.720
0.725
0.730
3689 G29
–50 –25
0
25
50
100
75
125 150


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