EL7530_06 Datasheet, PDF (1/11 Pages) Intersil Corporation – Monolithic 600mA Step-Down Regulator with Low Quiescent Current

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Data Sheet
July 12, 2006
EL7530
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 0.18n² 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.
Ordering Information
PART TAPE &
PKG.
PART NUMBER MARKING REEL PACKAGE 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 MDP0043
(Pb-free)
EL7530IYZ-T7 BAADA
(Note)
7” 10 Ld MSOP MDP0043
(Pb-free)
EL7530IYZ-T13 BAADA
(Note)
13” 10 Ld MSOP MDP0043
(Pb-free)
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.
Pinout
EL7530 (10 LD MSOP)
TOP VIEW
1 SGND
FB 10
2 PGND
VO 9
3 LX
PG 8
4 VIN
EN 7
5 VDD SYNC 6
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
• Bar code readers
• Cellular phones
• Portable test equipment
• Li-Ion battery powered devices
• Small form factor (SFP) modules
Typical Application Diagram
EL7530
TOP VIEW
V_S
(2.5V to 5.5V)
L₁
V_O
R₃ 100Ω
C₂
C₃
VIN
VDD
LX _1.8µH
C₁
10µF
10µF
0.1µF
EL7530
R₅ 100kΩ
R₄ 100kΩ
R₆
100kΩ
PG
EN
SYNC
PGND
SGND
R₁*
124kΩ
FB
R₂*
100kΩ
C₄
470pF
VO
(1.8V @ 600mA)
* V_O = 0.8V * (1 + R₁ / R₂)
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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