1
FN7434.6
EL7530
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.
Pinout
EL7530 (10 LD MSOP)
TOP VIEW
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
Typical Application Diagram
EL7530
TOP VIEW
Ordering Information
PART NUMBER
PART
MARKING
TAPE &
REEL PACKAGE
PKG.
DWG. #
EL7530IY BYAAA - 10 Ld MSOP MDP0043
EL7530IY-T7 BYAAA 7” 10 Ld MSOP MDP0043
EL7530IY-T13 BYAAA 13” 10 Ld MSOP MDP0043
EL7530IYZ
(Note)
BAADA - 10 Ld MSOP
(Pb-free)
MDP0043
EL7530IYZ-T7
(Note)
BAADA 7” 10 Ld MSOP
(Pb-free)
MDP0043
EL7530IYZ-T13
(Note)
BAADA 13” 10 Ld MSOP
(Pb-free)
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.
SGND FB
VDD SYNC
VIN EN
LX PG
PGND VO
1
2
3
4
10
9
8
7
5 6
* V
O
= 0.8V * (1 + R
1
/ R
2
)
1.8µH
C
1
C
2
10µF
L
1
0.1µF
C
3
(2.5V to 5.5V)
V
S
10µF
(1.8V @ 600mA)
R
1
R
2
*
124kΩ
100kΩ
VIN
VDD
LX
FB
SYNC
EN
PG
PGND
SGND
R
4
100kΩ
R
5
100kΩ
100kΩ
R
6
EL7530
VO
V
O
R
3
100Ω
470pF
C
4
Data Sheet July 12, 2006
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774
| Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright © Intersil Americas Inc. 2004-2006. All Rights Reserved.
All other trademarks mentioned are the property of their respective owners.
N
O
T
R
E
C
O
M
M
E
N
D
E
D
F
O
R
N
E
W
D
E
S
I
G
N
S
P
O
S
S
I
B
L
E
S
U
B
S
T
I
T
U
T
E
P
R
O
D
U
C
T
(
N
O
T
P
I
N
-
F
O
R
-
P
I
N
)
I
S
L
9
1
0
6