没有合适的资源?快使用搜索试试~ 我知道了~
LM2576S.pdf
资源推荐
资源详情
资源评论
1 www.semtech.com
LM2575 & LM2576
1A & 3A Miniconverter
Switching Regulators
POWER MANAGEMENT
Revision 1, January 2001
u Pin for pin replacement for Nationals LM2575/6
series
u DC-to-DC buck or buck/boost converter requiring
only 4 support components
u Fixed or adjustable voltages
u Preset output voltages of 3.3V, 5V and 12V
u Wide output voltage range, 1.23V to 35V
u 82% typical efficiency @ 5V out
u Wide input voltage range, 4V to 40V
u Inhibit/enable control pin
u Industrial temperature range
u TO-220 and TO-263 packages
The LM2575/6 series switching regulators are monolithic
integrated circuits designed for use in buck or buck/
boost regulator applications requiring accurate output
voltages over combined variations of line, load and
temperature. This unique series greatly simplifies
switching power supply design. The LM2575 has a
maximum output current of 1A and the LM2576 is rated
for 3A.
The LM2575/6 series miniconverters include a
switching regulator and compensation network all within
the same package. Just add a choke, catch diode and
two capacitors to obtain an efficient DC-to-DC converter.
The current limit and thermal shutdown features of the
LM2575/6 series fully protect the device against
overstress conditions.
The LM2575/6 series offers an alternative to popular 3
terminal linear regulators by providing higher efficiency
with reduced heatsink size. In many applications a heat
sink will not be required.
u Micro controller power supplies
u Medical equipment
u Industrial power supplies
u Instrumentation power supplies
Description Features
Applications
Typical Application Circuits
5752ML6752ML
L
1
Hµ033Hµ001
D
1
A3A7
C
NI
Fµ86Fµ021
C
TUO
Fµ033Fµ000,1
2ã 2001 Semtech Corp. www.semtech.com
LM2575 & LM2576
POWER MANAGEMENT
retemaraPlobmySmumixaMstinU
egatloVtupnIV
NI
54V
egatloVtupnIniPffO/nOV
FFO/NO
3.0- £ V
FFO/NO
£ V
NI
V
)etatSydaetS(nommoCotegatloVtuptuO 1-V
noitapissiDrewoPP
D
detimiLyllanretnIW
tneibmAotnoitcnuJecnatsiseRlamrehT
022-OT
362-OT
q
AJ
55
06
W/C°
esaCotnoitcnuJecnatsiseRlamrehT
022-OT
362-OT
q
CJ
0.2
0.2
W/C°
egnaRerutarepmeTnoitcnuJgnitarepOT
J
521+ot04-C°
egnaRerutarepmeTegarotST
GTS
051+ot56-C°
.ceS01)gniredloS(erutarepmeTdaeLT
DAEL
003C°
)ledoMydoBnamuH(gnitaRDSEV
DSE
2Vk
retemaraPlobmySsnoitidnoCtseTniMpyTxaMstinU
egatloVtuptuOV
O
I
O
A5.0=32.303.373.3V
3.3-6752MLVotV8
NI
detaR02.304.3
41.374.3
egatloVtuptuOV
O
I
O
A5.0=09.400.501.5V
5-6752MLVotV8
NI
detaR58.451.5
57.452.5
egatloVtuptuOV
O
I
O
A5.0=67.1100.2142.21V
21-6752MLVotV51
NI
detaR25.1184.21
04.1106.21
egatloVkcabdeeFV
BF
I
O
A5.0=712.1032.1342.1V
V,JDA-6752ML
O
V5=VotV8
NI
detaR391.1762.1
081.1082.1
tnerruCsaiBkcabdeeFI
B
V
NI
I,V21=
O
A5.0=05001An
JDA-6752ML 005
Unless otherwise specified: V
IN
= 12V for 3.3V, 5V and ADJ options and 25V for 12V option; V
OUT
= 5V for ADJ option; T
A
= 25ºC; V
IN
rated = 40V;
I
O
= 0.5 to 3A (LM2576), 0.2 to 1A (LM2575). Values in bold apply over full operating temperature range.
Absolute Maximum Ratings
Electrical Characteristics
3ã 2001 Semtech Corp. www.semtech.com
LM2575 & LM2576
POWER MANAGEMENT
Electrical Characteristics (Cont.)
retemaraPlobmySsnoitidnoCtseTniMpyTxaMstinU
egatloVtuptuOV
O
I
O
A2.0=32.303.373.3V
3.3-5752MLVotV8
NI
detaR02.304.3
41.374.3
egatloVtuptuOV
O
I
O
A2.0=09.400.501.5V
5-5752MLVotV8
NI
detaR58.451.5
57.452.5
egatloVtuptuOV
O
I
O
A2.0=67.1100.2142.21V
21-5752MLVotV51
NI
detaR25.1184.21
04.1106.21
egatloVkcabdeeFV
BF
I
O
A2.0=712.1032.1342.1V
V,JDA-5752ML
O
V5=VotV8
NI
detaR391.1762.1
081.1082.1
tnerruCsaiBkcabdeeFI
B
V
NI
I,V21=
O
A2.0=05001An
JDA-5752ML 005
noitpO/ycneiciffE
V3.3
h
V
NI
I,V21=
O
)6752MLrofA3,5752ML(A1=77
%
V5 28
V21V
NI
I,V51=
O
)6752MLrofA3,5752ML(A1=88
V,JDA
O
V5=V
NI
I,V21=
O
)6752MLrofA3,5752ML(A1=28
ycneuqerFgnihctiwSf
XS
742585
zHk
3426
egatloVnoitarutaS
)1(
V
TAS
I,5752ML
O
A1= 9.02.1
V
I,6752ML
O
A3= 9.04.1
)nO(elcyCytuD.xaM
)3(
CD3989
%
5752MLtnerruCkaeP
)1(
I
LC
7.12.20.3
A
3.12.3
6752MLtnerruCkaeP
)1(
I
LC
2.48.59.6
A
5.35.7
Unless otherwise specified: V
IN
= 12V for 3.3V, 5V and ADJ options and 25V for 12V option; V
OUT
= 5V for ADJ option; T
A
= 25ºC; V
IN
rated = 40V;
I
O
= 0.5 to 3A (LM2576), 0.2 to 1A (LM2575). Values in bold apply over full operating temperature range.
4ã 2001 Semtech Corp. www.semtech.com
LM2575 & LM2576
POWER MANAGEMENT
Notes:
(1) Output sourcing current, resistive load, no inductor or capacitor.
(2) Feedback = V
O
+ 1.0V.
(3) Feedback = 0V.
Electrical Characteristics (Cont.)
retemaraPlobmySsnoitidnoCtseTniMpyTxaMstinU
tnerruCegakaeLtuptuO
)2(
V0=tuptuOI
L
V
NI
V=
NI
detaR2
Am
V1-=tuptuO 5.703
tnerruCtnecseiuQ
)2(
I
Q
501Am
21
tnerruCtnecseiuQybdnatSI
YBTS
05Aµ
)V5=niPffO/nO( 005
leveLtupnIcigoLniPffO/nOV
HI
2.24.1V
4.2
V
LI
2.10.1
V
8.0
tnerruCtupnIniPffO/nOI
HI
V
FFO/NO
)ffO(V5=2103Aµ
I
LI
V
FFO/NO
)nO(V0=001
Unless otherwise specified: V
IN
= 12V for 3.3V, 5V and ADJ options and 25V for 12V option; V
OUT
= 5V for ADJ option; T
A
= 25ºC; V
IN
rated = 40V;
I
O
= 0.5 to 3A (LM2576), 0.2 to 1A (LM2575). Values in bold apply over full operating temperature range.
剩余18页未读,继续阅读
资源评论
sunflower_lhb
- 粉丝: 0
- 资源: 1
上传资源 快速赚钱
- 我的内容管理 展开
- 我的资源 快来上传第一个资源
- 我的收益 登录查看自己的收益
- 我的积分 登录查看自己的积分
- 我的C币 登录后查看C币余额
- 我的收藏
- 我的下载
- 下载帮助
安全验证
文档复制为VIP权益,开通VIP直接复制
信息提交成功