®
EL7536
Data Sheet
August 10, 2005
FN7396.5
Monolithic 1A Step-Down Regulator
The EL7536 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 be externally set from 0.8V to V
IN
with a resistive
divider.
The EL7536 features PWM mode control. The operating
frequency is typically 1.4MHz. Additional features include a
100ms Power-On-Reset output, <1µA shut-down current,
short-circuit protection, and over-temperature protection.
The EL7536 is available in the 10-pin MSOP package,
making the entire converter occupy less than 0.15in
2
of PCB
area with components on one side only. Both packages are
specified for operation over the full -40°C to +85°C
temperature range.
Features
• Less than 0.15in
2
(0.97cm
2
) footprint for the complete 1A
converter
• Components on one side of PCB
• Max height 1.1mm MSOP10
• 100ms Power-On-Reset output (POR)
• Internally-compensated voltage mode controller
• Up to 94% efficiency
• <1µA shut-down current
• Overcurrent and over-temperature protection
• Pb-Free plus anneal available (RoHS compliant)
Applications
• PDA and pocket PC computers
• Bar code readers
Ordering Information
PART NUMBER
(BRAND)
EL7536IY
(BDAAA)
EL7536IY-T7
(BDAAA)
EL7536IY-T13
(BDAAA)
EL7536IYZ
(BFAAA) (Note)
EL7536IYZ-T7
(BFAAA) (Note)
EL7536IYZ-T13
(BFAAA) (Note)
PACKAGE
10-Pin MSOP
10-Pin MSOP
10-Pin MSOP
10-Pin MSOP
(Pb-free)
10-Pin MSOP
(Pb-free)
10-Pin MSOP
(Pb-free)
TAPE &
REEL
-
7”
13”
-
7”
13”
PKG.
DWG. #
MDP0043
MDP0043
MDP0043
MDP0043
MDP0043
MDP0043
• Cellular phones
• Portable test equipment
• Li-Ion battery powered devices
• Small form factor (SFP) modules
Pinout and Typical Application Diagram
EL7536
TOP VIEW
1 SGND
2 PGND
3 LX
4 VIN
5 VDD
FB 10
VO 9
POR 8
EN 7
RSI 6
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.
R
1
*
100kΩ
R
2
*
124kΩ
C
1
10µF
V
O
(1.8V@1A)
V
IN
(2.5V-6V)
L
1
1.8µH
C
2
10µF
POR
EN
RSI
R
6
100kΩ
R
3
100Ω
C
3
0.1µF
R
4
R
5
100kΩ
100kΩ
* V
O
= 0.8V * (1 + R
2
/ R
1
)
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774
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Copyright © Intersil Americas Inc. 2003-2005. All Rights Reserved.
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