EL7532
®
Data Sheet
August 12, 2005
FN7435.5
Monolithic 2A Step-Down Regulator
Features
• 2A continuous current (from -40°C to +85°C)
The EL7532 is a synchronous, integrated FET 2A 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 single Li-Ion battery source. The
2
• Less than 0.18 in footprint for the complete 2A converter
• Max height 1.1mm MSOP10
output can be externally set from 0.8V to V with a resistive
IN
• 1.5MHz (typ.) switching frequency
• 100ms Power-On-Reset output (POR)
• Internally-compensated voltage mode controller
• Up to 94% efficiency
divider.
The EL7532 features PWM mode control. The operating
frequency is typically 1.5MHz. Additional features include a
100ms Power-On-Reset output, <1µA shut-down current,
short-circuit protection, and over-temperature protection.
• <1µA shut-down current
The EL7532 is available in the 10-pin MSOP package,
making the entire converter occupy less than 0.18 in of
PCB area with components on one side only. The package is
specified for operation over the full -40°C to +85°C
temperature range.
• Overcurrent and over temperature protection
• Pb-Free plus anneal available (RoHS compliant)
2
Applications
• PDA and pocket PC computers
Ordering Information
• Bar code readers
PART NUMBER
TAPE &
REEL
PKG.
• ADSL Modems
(BRAND)
PACKAGE
DWG. #
• Portable instruments
• Li-Ion battery powered devices
• ASIC/FPGA/DSP supplies
• Set Top Boxes
EL7532IY
10-Pin MSOP
-
MDP0043
MDP0043
MDP0043
MDP0043
MDP0043
MDP0043
(BABAA)
EL7532IY-T7
(BABAA)
10-Pin MSOP
10-Pin MSOP
7”
EL7532IY-T13
(BABAA)
13”
-
Typical Application Schematic
EL7532IYZ
(BAARA) (Note)
10-Pin MSOP
(Pb-free)
EL7532IYZ-T7
(BAARA) (Note)
10-Pin MSOP
(Pb-free)
7”
V
(2.5V-6V)
V
(1.8V@ 2A)
IN
O
VIN
VO
LX
R
3
C
1
100Ω
EL7532IYZ-T13
(BAARA) (Note)
10-Pin MSOP
(Pb-free)
13”
10µF
L
1
VDD
C
2
10µF
1.8µH
C
0.1µF
3
EL7532
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.
FB
R *
EN
2
124kΩ
SGND
PGND
POR
RSI
R *
100kΩ
1
* V = 0.8V * (1 + R / R )
O
2
1
Pinout
SGND
PGND
LX
FB
VO
1
2
3
4
5
10
9
POR
EN
8
VIN
7
6
VDD
RSI
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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Copyright © Intersil Americas Inc. 2004, 2005. All Rights Reserved.
1
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