®
EL7530
Data Sheet
July 12, 2006
FN7434.6
Monolithic 600mA Step-Down Regulator
with Low Quiescent Current
The EL7530 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 EL7530 features automatic PFM/PWM mode control, or
PWM mode only. The PWM frequency is typically 1.4MHz
and can be synchronized up to 12MHz. The typical no load
quiescent current is only 120µA. Additional features include
a Power-Good output, <1µA shut-down current, short-circuit
protection, and over-temperature protection.
The EL7530 is available in the 10 Ld MSOP package,
making the entire converter occupy less than 0.18n
2
of PCB
area with components on one side only. The 10 Ld MSOP
package is specified for operation over the full -40°C to
+85°C temperature range.
Features
• Less than 0.18in
2
footprint for the complete 600mA
converter
• Components on one side of PCB
• Max height 1.1mm MSOP10
• Power-Good (PG) output
• Internally-compensated voltage mode controller
• Up to 95% efficiency
• <1µA shut-down current
• 120µA quiescent current
• Overcurrent and over-temperature protection
• External synchronizable up to 12MHz
• 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
Ordering Information
PART
TAPE &
PART NUMBER MARKING REEL
EL7530IY
EL7530IY-T7
EL7530IY-T13
EL7530IYZ
(Note)
EL7530IYZ-T7
(Note)
EL7530IYZ-T13
(Note)
BYAAA
BYAAA
BYAAA
BAADA
BAADA
BAADA
-
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
MDP0043
Typical Application Diagram
EL7530
TOP VIEW
V
S
(2.5V to 5.5V)
VIN
R
3
100Ω
C
2
10µF
C
3
0.1µF
R
5
100kΩ
PG
EN
FB
R
2
*
100kΩ
VO
VDD
EL7530
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.
LX
L
1
1.8µH
C
1
10µF
V
O
Pinout
EL7530 (10 LD MSOP)
TOP VIEW
1
SGND
2
PGND
3
LX
4
VIN
5
VDD
FB
10
VO
9
PG
8
EN
7
SYNC
6
R
4
100kΩ
R
6
100kΩ
R
1
*
124kΩ
C
4
470pF
SYNC
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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Copyright © Intersil Americas Inc. 2004-2006. All Rights Reserved.
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