EL7530 Datasheet, PDF (1/11 Pages) Intersil Corporation – Monolithic 600mA Step-Down Regulator with Low Quiescent Current

®
Data Sheet
August 10, 2005
EL7530
FN7434.3
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-pin MSOP package,
making the the entire converter occupy less than 0.18n² of
PCB area with components on one side only. The 10-pin
MSOP package is specified for operation over the full -40°C
to +85°C temperature range.
Features
• Less than 0.18in² 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
Ordering Information
• Bar code readers
PART NUMBER
(BRAND)
EL7530IY
(BYAAA)
EL7530IY-T7
(BYAAA)
EL7530IY-T13
(BYAAA)
EL7530IYZ
(BAADA) (Note)
PACKAGE
10-Pin MSOP
10-Pin MSOP
10-Pin MSOP
10-Pin MSOP
(Pb-free)
TAPE &
REEL
-
7”
13”
-
PKG.
DWG. #
MDP0043
MDP0043
MDP0043
MDP0043
• Cellular phones
• Portable test equipment
• Li-Ion battery powered devices
• Small form factor (SFP) modules
Pinout and Typical Application Diagram
EL7530
TOP VIEW
EL7530IYZ-T7
10-Pin MSOP
7”
MDP0043
(BAADA) (Note)
(Pb-free)
EL7530IYZ-T13
10-Pin MSOP
13”
(BAADA) (Note)
(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.
C₁
10µF
V_O (1.8V@600mA)
V_S (2.5V-6V)
C₂
L_{1 10µF}
1.8µH
R₃
100Ω
C₃
0.1µF
1 SGND
FB 10
2 PGND
VO 9
3 LX
PG 8
4 VIN
EN 7
5 VDD SYNC 6
R₄ 100kΩ
R₁*
100kΩ
R₂*
124kΩ
C₄
470pF
PG
EN
SYNC
R₆
100kΩ
R₅ 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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