EL7536 Datasheet, PDF (1/8 Pages) Intersil Corporation – Monolithic 1A Step-Down Regulator

®
Data Sheet
August 10, 2005
EL7536
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 0.15in² 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.
Ordering Information
PART NUMBER
(BRAND)
PACKAGE
TAPE & PKG.
REEL DWG. #
EL7536IY
(BDAAA)
10-Pin MSOP
-
MDP0043
EL7536IY-T7
(BDAAA)
10-Pin MSOP
7” MDP0043
EL7536IY-T13
(BDAAA)
10-Pin MSOP
13” MDP0043
EL7536IYZ
(BFAAA) (Note)
10-Pin MSOP
(Pb-free)
-
MDP0043
EL7536IYZ-T7
(BFAAA) (Note)
10-Pin MSOP
(Pb-free)
7” MDP0043
EL7536IYZ-T13
(BFAAA) (Note)
10-Pin MSOP
(Pb-free)
13” MDP0043
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.
Features
• Less than 0.15in² (0.97cm²) 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
• Cellular phones
• Portable test equipment
• Li-Ion battery powered devices
• Small form factor (SFP) modules
Pinout and Typical Application Diagram
EL7536
TOP VIEW
C₁
10µF
V_O (1.8V@1A)
V_IN (2.5V-6V)
C₂
L_{1 10µF}
1.8µH
R₃
100Ω
C₃
0.1µF
1 SGND
2 PGND
3 LX
4 VIN
5 VDD
FB 10
VO 9
POR 8
EN 7
RSI 6
R₄ 100kΩ
R₅ 100kΩ
R₁*
100kΩ
R₂*
124kΩ
POR
EN
RSI
R₆
100kΩ
* V_O = 0.8V * (1 + R₂ / R₁)
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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