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