®
EL7534
Data Sheet
July 12, 2006
FN7431.8
Monolithic 600mA Step-Down Regulator
The EL7534 is a synchronous, integrated FET 600mA 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 EL7534 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.
The EL7534 is available in the 10 Ld MSOP package,
making the entire converter occupy less than 0.15 in
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 0.15 in
2
(0.97 cm
2
) footprint for the complete
600mA converter
• Components on one side of PCB
• Max height 1.1 mm 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
EL7534IY
EL7534IY-T7
EL7534IY-T13
EL7534IYZ
(Note)
EL7534IYZ-T7
(Note)
PART
TAPE &
MARKING REEL
BPAAA
BPAAA
BPAAA
BGAAA
BGAAA
-
7”
13”
-
7”
13”
PACKAGE
10 Ld MSOP
10 Ld MSOP
10 Ld MSOP
10 Ld MSOP
(Pb-free)
10 Ld MSOP
(Pb-free)
10 Ld MSOP
(Pb-free)
PKG.
DWG. #
MDP0043
MDP0043
MDP0043
MDP0043
MDP0043
• Cellular phones
• Portable test equipment
• Li-Ion battery powered devices
• Small form factor (SFP) modules
Typical Application Diagram
EL7534
TOP VIEW
V
S
(2.5V to 5.5V)
VIN
R
3
100Ω
C
2
10µF
C
3
0.1µF
R
5
100kΩ
POR
EN
FB
R
2
*
100kΩ
VO
R
4
100kΩ
VDD
EL7534
EL7534IYZ-T13 BGAAA
(Note)
MDP0043
LX
L
1
1.8µH
C
1
10µF
V
O
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
*
124kΩ
C
4
470pF
Pinout
EL7534 (10 LD MSOP)
TOP VIEW
1
SGND
2
PGND
3
LX
4
VIN
5
VDD
FB
10
VO
9
POR
8
EN
7
RSI
6
RSI
R
6
100kΩ
PGND
SGND
(1.8V @ 600mA)
* V
O
= 0.8V * (1 + R
1
/ R
2
)
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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