EL7534
®
Data Sheet
July 12, 2006
FN7431.8
Monolithic 600mA Step-Down Regulator
Features
2
2
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
• Less than 0.15 in (0.97 cm ) footprint for the complete
600mA converter
• Components on one side of PCB
• Max height 1.1 mm MSOP10
accommodates supplies of 3.3V, 5V, or a Li-Ion battery
source. The output can be externally set from 0.8V to V
with a resistive divider.
IN
• 100ms Power-On-Reset output (POR)
• Internally-compensated voltage mode controller
• Up to 94% efficiency
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.
• <1µA shut-down current
• Overcurrent and over-temperature protection
• Pb-free plus anneal available (RoHS compliant)
The EL7534 is available in the 10 Ld MSOP package,
making the entire converter occupy less than 0.15 in 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.
2
Applications
• PDA and pocket PC computers
• Bar code readers
Ordering Information
PART
NUMBER
PART
MARKING REEL
TAPE &
PKG.
DWG. #
• Cellular phones
PACKAGE
• Portable test equipment
• Li-Ion battery powered devices
• Small form factor (SFP) modules
EL7534IY
EL7534IY-T7
BPAAA
BPAAA
-
7”
13”
-
10 Ld MSOP MDP0043
10 Ld MSOP MDP0043
10 Ld MSOP MDP0043
EL7534IY-T13 BPAAA
EL7534IYZ
(Note)
BGAAA
10 Ld MSOP MDP0043
(Pb-free)
Typical Application Diagram
EL7534
TOP VIEW
EL7534IYZ-T7 BGAAA
(Note)
7”
10 Ld MSOP MDP0043
(Pb-free)
V
V
(2.5V to 5.5V)
L
1
O
S
VIN
LX
EL7534IYZ-T13 BGAAA
(Note)
13”
10 Ld MSOP MDP0043
(Pb-free)
1.8µH
R
100Ω
3
C
10µF
1
VDD
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
3
2
0.1µF
EL7534
R
R
100kΩ
5
4
R *
1
124kΩ
POR
C
4
FB
VO
EN
470pF
100kΩ
RSI
R *
2
100kΩ
Pinout
R
6
EL7534 (10 LD MSOP)
100kΩ
PGND
SGND
TOP VIEW
(1.8V @ 600mA)
SGND
PGND
LX
FB
VO
1
2
3
4
5
10
9
* V = 0.8V * (1 + R / R )
O
1
2
POR
EN
8
VIN
7
6
VDD
RSI
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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1
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