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文件大小: 4mb
下载次数: 0
上传时间: 2019-08-24
详细说明:lm2576芯片使用手册lEXAS
INSTRUMENTS
Gnd
5-ON/OFF
4- Feedback
I3-Ground
5-ON/OF
FR5-ON/OFF
TAB IS
曰4- Feed back
GND
3- Ground
TAB IS
口4- Feed back
2-Output
GND
3-Ground
N
Side vie
Side view
EXAS
INSTRUMENTS
≤≤
lEXAS
INSTRUMENTS
≤
≤
≤
EXAS
INSTRUMENTS
lEXAS
INSTRUMENTS
EXAS
INSTRUMENTS
V=20v
08
1.2
LOAD =500 mA
LCAD -500 mA
=25°C
1.0
0.4
08
0.6
0.4
0.2
2V义15V
0
-0.6
-0.2
-0.8
0.4
0.6
50-25-0255075100125
0102030405060
JUNCTION TEMPERATURE (oC)
INPUT VOLTAGE (V)
2.0
150LH
OAD
3A
N
6.0
1.5
1.0
5.0
LOAd =200 mA
0.5
4.5
Rr
4.0
-75-50-250255075100125150
-75-50-250255075100125150
JUNCTION TEMPERATURE (oc)
JUNCTION TEMPERATURE (oC)
20
5V
18
OUT
VIN =40V
Ground pin
16
J=2
14
VON /OFF,5V
12
O=zu∽
LCAD
3A
10
IN
50
200 mA
0
0
02030405060
-50-250255075100125
INPUT VOLTAGE (V)
JUNCTION TEMPERATURE (oC
lEXAS
INSTRUMENTS
T
1.6
Norma| ized at25°c
1.4
1.2
55°c
1.0
0.8
6
IN=40V
>z=
150°C
0.4
75-50-250255075100125150
00.51.01.5202.53.0
JUNCTION TEM PERATURE (oc)
SWITCH CURRENT (A)
5.0
LOAD
3A
25°C
Adiustable version Onl
4.5
OAD
200mA
4.0
90
85}/15V0u
3.0
zu5
80
2.5
5V
20
5
9>
LOAD
3A
LOAD500 mA
65
0.5
L0A0=200mA
0
60
-50-250255075100125
102030405060
INPUT VOLTAGE (V
JUNCTION TEMPERATURE (oC)
20.0
Adjustable Version Onl
Adjustable Version Only
VIN=7V
E15.0
Eu2o
OAD
=500mA
0
乙∝Ou9
5
N
40V
10.0
0
VIN =7V
7.5
出5.0
LCAD=500 mA
10
-15
40
60
80
100
0
20
60
80100
丫 CYCLE(%)
儿 UTY CYCLE(%)
EXAS
INSTRUMENTS
00
544
05050
Adjusta ble Version Onl
Adjustable Version Only
17.5
E15.0
12.5
0.0
N=40V
2.0
oJT≈1.23v
7.5
1.5
500mA
LOAD =500 mA
LOAD
50
2.5
50-250255075100125
20
100
JUNCTION TEMPERATURE (oc)
DUTY CYCLE(‰)
20
100
Adjustable Version Only
Adjustable Version Only
15
75
LCAD
500mA
10
u=
40
050
VI=7v
5Ez兰a
75
100
40
-75-50-250255075100125150
DUTY CYCLE(‰)
JUNCTION TEMPERATURE ( oc)
A
32°C
B·2A
z=0∽0=m31
4A
OJA=50.C/ W
Ci 2A
1A=73°cW
0
5 J1s/niv
0102030405060708090100
AMEIENT TEMPERATURE (c)
e
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