Electronic Components Datasheet Search
  English  ▼

X  

Preview PDF HTML

LTC7138 Datasheet(PDF) 22 Page - Linear Technology

Part # LTC7138
Description  High Efficiency, 140V 400mA Step-Down Regulator
PDF  24 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC7138 Datasheet(HTML) 22 Page - Linear Technology

Back Button LTC7138 Datasheet HTML 16Page - Linear Technology LTC7138 Datasheet HTML 17Page - Linear Technology LTC7138 Datasheet HTML 18Page - Linear Technology LTC7138 Datasheet HTML 19Page - Linear Technology LTC7138 Datasheet HTML 20Page - Linear Technology LTC7138 Datasheet HTML 21Page - Linear Technology LTC7138 Datasheet HTML 22Page - Linear Technology LTC7138 Datasheet HTML 23Page - Linear Technology LTC7138 Datasheet HTML 24Page - Linear Technology  
Zoom Inzoom in Zoom Outzoom out
 22 / 24 page
background image
LTC7138
22
7138f
For more information www.linear.com/LTC7138
Typical applicaTions
36V to 140V to 36V/400mA with 120mA Input Current Limit
5V to 140V Input to 5V/400mA Output with 20kHz Minimum Switching Frequency
L1: TDK SLF12555T-101M1R1
D1: ROHM RF101L2S
7138 TA06a
VFB
SS
SW
L1
100µH
VIN
RUN
CIN
1µF
250V
X7R
COUT
4.7µF
50V
X7R
VOUT
36V
400mA*
VIN
36V TO 140V
ISET
OVLO
LTC7138
GND
FBO
220k
35.7k
R2
4.02k
R1
470k
VPRG1
VPRG2
INPUT CURRENT LIMIT
=
VOUT
2.5
•
R2
R1
+R2
• 1
+
5µA •R1
VIN


≈
VOUT
2.5
•
R2
R1
+R2
*MAXIMUM LOAD CURRENT
=
VIN
36V
•120mA
≤ 400mA
D1
ANODE
Maximum Load and Input Current
vs Input Voltage
Input Current vs Load Current
Switching Frequency vs Load Current
7138 TA08a
VFB
SW
ANODE
L1
150µH
VIN
RUN
CIN
1µF
250V
COUT
22µF
VOUT
5V
400mA
VIN
5V TO 140V
VPRG1
VPRG2
OVLO
LTC7138
GND
ISET
FBO
SS
953k
6.8
2N7000
100k
175k
OUT
SET
V+
IN
DIV
LTC6994-1
GND
L1: COILTRONICS DR74-101-R
D1: DIODES INC MURS120-13-F
D1
VIN INPUT VOLTAGE (V)
40
400
500
150
140
130
120
110
7138 TA06b
0
50
80
70
60
100
90
200
300
100
MAXIMUM LOAD CURRENT
MAXIMUM INPUT CURRENT
0.1
100
1000
10
1
LOAD CURRENT (mA)
100
1
10
7138 TA08b
0.01
0.1
WITHOUT FREQUENCY LIMIT
WITH FREQUENCY LIMIT
VIN = 48V
0.1
100
1000
10
1
LOAD CURRENT (mA)
100
1
10
7138 TA08c
0.01
0.1
WITHOUT FREQUENCY LIMIT
WITH FREQUENCY LIMIT
VIN = 48V



Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24


Datasheet Download

Go To PDF Page


Link URL



Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Contact us   |   Privacy Policy   |   Link to Datasheet    |   Link Exchange   |   Manufacturer List
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com