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EL7531_06

更新时间： 2024-02-28 20:54:20
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英特矽尔 - INTERSIL 稳压器
页数 文件大小 规格书
11页 344K
描述
Monolithic 1A Step-Down Regulator with Low Quiescent Current

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EL7531_06 数据手册

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EL7531  
®
Data Sheet  
July 13, 2006  
FN7428.9  
Monolithic 1A Step-Down Regulator with  
Low Quiescent Current  
Features  
2
2
• Less than 0.15 in (0.97 cm ) footprint for the complete 1A  
converter  
The EL7531 is a synchronous, integrated FET 1A step-down  
regulator with internal compensation. It operates with an input  
voltage range from 2.5V to 5.5V, which accommodates  
supplies of 3.3V, 5V, or a Li-Ion battery source. The output can  
• Components on one side of PCB  
• Max height 1.1mm MSOP10  
be externally set from 0.8V to V with a resistive divider.  
IN  
• Power-Good (PG) output  
The EL7531 features automatic PFM/PWM mode control, or  
PWM mode only. The PWM frequency is typically 1.4MHz  
and can be synchronized up to 12MHz. The typical no load  
quiescent current is only 120µA. Additional features include  
a Power-Good output, <1µA shut-down current, short-circuit  
protection, and over-temperature protection.  
• Internally-compensated voltage mode controller  
• Up to 94% efficiency  
• <1µA shut-down current  
• 120µA quiescent current  
• Overcurrent and over-temperature protection  
• External synchronizable up to 12MHz  
• Pb-Free plus anneal available (RoHS compliant)  
The EL7531 is available in the 10 Ld MSOP package,  
2
making the entire converter occupy less than 0.15 in of  
PCB area with components on one side only. The 10 Ld  
MSOP package is specified for operation over the full -40°C  
to +85°C temperature range.  
Applications  
• PDA and pocket PC computers  
• Bar code readers  
Ordering Information  
PART  
TAPE &  
REEL  
PKG.  
DWG. #  
PART NUMBER MARKING  
PACKAGE  
10 Ld MSOP  
10 Ld MSOP  
10 Ld MSOP  
• Cellular phones  
EL7531IY  
BEAAA  
BEAAA  
BEAAA  
BHAAA  
-
7”  
13”  
-
MDP0043  
MDP0043  
MDP0043  
MDP0043  
• Portable test equipment  
• Li-Ion battery powered devices  
• Small form factor (SFP) modules  
EL7531IY-T7  
EL7531IY-T13  
EL7531IYZ  
(Note)  
10 Ld MSOP  
(Pb-free)  
Typical Application Diagram  
EL7531IYZ-T7  
(Note)  
BHAAA  
7”  
10 Ld MSOP  
(Pb-free)  
MDP0043  
MDP0043  
EL7531  
TOP VIEW  
EL7531IYZ-T13 BHAAA  
(Note)  
13”  
10 Ld MSOP  
(Pb-free)  
V
V
(2.5V to 5.5V)  
L
1
O
S
VIN  
LX  
NOTE: Intersil Pb-free plus anneal products employ special Pb-free  
material sets; molding compounds/die attach materials and 100% matte  
tin plate termination finish, which are RoHS compliant and compatible  
with both SnPb and Pb-free soldering operations. Intersil Pb-free  
products are MSL classified at Pb-free peak reflow temperatures that  
meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.  
1.8µH  
R
100Ω  
3
C
10µF  
1
VDD  
C
10µF  
C
3
2
0.1µF  
EL7531  
R
R
100kΩ  
5
4
R *  
1
124kΩ  
PG  
EN  
C
Pinout  
4
FB  
VO  
470pF  
EL7531 (10 LD MSOP)  
100kΩ  
SYNC  
R *  
2
100kΩ  
TOP VIEW  
R
6
100kΩ  
PGND  
SGND  
SGND  
PGND  
LX  
FB  
VO  
1
2
3
4
5
10  
9
(1.8V @ 1A)  
PG  
8
* V = 0.8V * (1 + R / R )  
O
1
2
VIN  
EN  
7
6
VDD  
SYNC  
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.  
1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.  
Copyright © Intersil Americas Inc. 2004, 2005, 2006. All Rights Reserved.  
1
All other trademarks mentioned are the property of their respective owners.  
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