전자부품 데이터시트 검색엔진
  Korean  ▼

Delete All
ON OFF
ALLDATASHEET.CO.KR

X  

Preview PDF Download HTML

LT1977 데이터시트(HTML) 5 Page - Linear Technology

부품명 LT1977
상세내용  High Voltage 1.5A, 500kHz Step-Down Switching Regulator with 100uA Quiescent Current
Download  24 Pages
Scroll/Zoom Zoom In 100% Zoom Out
제조사  LINER [Linear Technology]
홈페이지  http://www.linear.com
Logo 

LT1977 데이터시트(HTML) 5 Page - Linear Technology

 
Zoom Inzoom in Zoom Outzoom out
/ 24 page
 5 / 24 page
background image
LT1977
5
1977f
TYPICAL PERFOR A CE CHARACTERISTICS
Switch Peak Current Limit
Soft-Start Current Threshold
vs FB Voltage
Frequency Foldback Percentage
TEMPERATURE (°C)
–50
1.5
2.0
2.5
3.0
3.5
–25
–0
25
50
1977 G10
75
100
125
FB VOLTAGE (V)
0
0
10
20
30
0.2
0.4
0.6
0.8
1977 G11
1.0
40
50
5
15
25
35
45
1.2
SOFT-START
DEFEATED
TJ = 25°C
FB PIN VOLTAGE (V)
0
60
80
100
1
1977 G12
40
20
50
70
90
30
10
0
0.25
0.5
0.75
1.25
Switch On Voltage (VCESAT)
LOAD CURRENT (A)
–0.1
0
50
150
200
250
500
350
0.3
0.7
0.9
1977 G13
100
400
450
300
0.1
0.5
1.1
1.3
1.5
TJ = 125°C
TJ = 25°C
TJ = –50°C
INPUT VOLTAGE (V)
0
0
50
100
10
20
30
40
1977 F05
50
150
25
75
125
60
VOUT = 3.3V
TA = 25°C
Supply Current vs Input Voltage
LOAD CURRENT (A)
0
6.0
7.0
8.0
1
1977 G19
5.0
4.0
5.5
6.5
7.5
4.5
3.5
3.0
0.25
0.5
0.75
1.25
VOUT = 5V
START-UP
RUNNING
VOUT = 3.3V
START-UP
RUNNING
Minimum Input Voltage
Burst Mode Threshold
vs Input Voltage
INPUT VOLTAGE (V)
5
300
400
500
13
1977 G20
200
100
250
350
450
150
50
0
7
9
11
15
614
8
10
12
16 17 18 19 20
Burst Mode EXIT
(INCREASING LOAD)
Burst Mode ENTER
(DECREASING LOAD)
VOUT = 3.3V
L = 10µH
COUT = 100µF
Minimum On Time
Boost Current vs Load Current
TEMPERATURE (°C)
–50
0
50
150
200
250
500
350
0
50
75
1977 G21
100
400
450
300
–25
25
100
125
LOAD CURRENT = 0.5A
LOAD CURRENT = 1A
LOAD CURRENT (A)
0
0
5
15
20
25
1
45
1977 G22
10
0.5
0.25
1.25
0.75
1.5
30
35
40


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 


데이터시트 Download




링크 URL



Privacy Policy
ALLDATASHEET.CO.KR
ALLDATASHEET 가 귀하에 도움이 되셨나요?  [ DONATE ]  

Alldatasheet는?   |   광고문의    |   운영자에게 연락하기   |   개인정보취급방침   |   즐겨찾기   |   링크교환   |   제조사별 검색
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