1
FN7435.9
EL7532
Monolithic 2A Step-Down Regulator
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
output can be externally set from 0.8V to V
IN
with a resistive
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
and over-temperature protection.
The EL7532 is available in the 10-pin MSOP package,
making the entire converter occupy less than 0.18 in
2
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.
Pinout
EL7532
(10 LD MSOP)
TOP VIEW
Features
• 2A continuous current (from -40°C to +85°C)
• Less than 0.18 in
2
footprint for the complete 2A converter
• Max height 1.1mm MSOP10
• 1.5MHz (typ.) switching frequency
• 100ms Power-On-Reset output (POR)
• Internally-compensated voltage mode controller
• Up to 94% efficiency
• <1µA shut-down current
• Over-temperature protection
• Pb-free available (RoHS compliant)
Applications
• PDA and pocket PC computers
• Bar code readers
• ADSL modems
• Portable instruments
• Li-Ion battery powered devices
• ASIC/FPGA/DSP supplies
• Set top boxes
Typical Application Schematic
Ordering Information
PART
NUMBER
PART
MARKING
TEMP.
RANGE
(°C) PACKAGE
PKG.
DWG. #
EL7532IYZ
(Note)
BAARA -40 to +85 10 Ld MSOP
(Pb-free)
MDP0043
*Add -T7 suffix for 1k unit or -T13 suffix for 2.5k unit tape and reel
options. Please refer to TB347 for details on reel specifications.
NOTE: These Intersil Pb-free plastic packaged products employ
special Pb-free material sets; molding compounds/die attach
materials and 100% matte tin plate PLUS ANNEAL - e3 termination
finish, which is 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.
SGND FB
VDD RSI
VIN EN
LX POR
PGND VO
1
2
3
4
10
9
8
7
5 6
1.8µH
C
1
C
2
10µF
L
1
0.1µF
C
3
(2.5V to 5.5V)
V
S
10µF
(1.8V @ 2A)
R
1
*
R
2
*
124k
100k
VIN
VDD
LX
FB
RSI
EN
POR
PGND
SGND
R
4
100k
R
5
100k
100k
R
6
EL7532
VO
V
O
R
3
100
470pF
C
4
POWER
GROUND
SIGNAL
GROUND
V
O
= 0.8V * (1 + R
2
/ R
1
)
*C4 is optional. Make sure that loop response are
measured in actual application.
Data Sheet December 9, 2015
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 trademark of Intersil Americas LLC.
Copyright © Intersil Americas LLC. 2004-2007, 2015. All Rights Reserved.
All other trademarks mentioned are the property of their respective owners.
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