EL7534_06 Datasheet, PDF (1/9 Pages) Intersil Corporation – Monolithic 600mA Step-Down Regulator

®
Data Sheet
July 12, 2006
EL7534
FN7431.8
Monolithic 600mA Step-Down Regulator
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
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 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.
The EL7534 is available in the 10 Ld MSOP package,
making the entire converter occupy less than 0.15 in² 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.
Ordering Information
PART
NUMBER
PART TAPE &
PKG.
MARKING REEL PACKAGE DWG. #
EL7534IY
BPAAA
- 10 Ld MSOP MDP0043
EL7534IY-T7 BPAAA
7” 10 Ld MSOP MDP0043
EL7534IY-T13 BPAAA
13” 10 Ld MSOP MDP0043
EL7534IYZ
(Note)
BGAAA
- 10 Ld MSOP MDP0043
(Pb-free)
EL7534IYZ-T7 BGAAA
(Note)
7” 10 Ld MSOP MDP0043
(Pb-free)
EL7534IYZ-T13 BGAAA
(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
EL7534 (10 LD MSOP)
TOP VIEW
1 SGND
FB 10
2 PGND
VO 9
3 LX
POR 8
4 VIN
EN 7
5 VDD
RSI 6
Features
• Less than 0.15 in² (0.97 cm²) footprint for the complete
600mA converter
• Components on one side of PCB
• Max height 1.1 mm MSOP10
• 100ms Power-On-Reset output (POR)
• Internally-compensated voltage mode controller
• Up to 94% efficiency
• <1µA shut-down current
• Overcurrent and over-temperature protection
• 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
EL7534
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
EL7534
R₅ 100kΩ
R₄ 100kΩ
R₆
100kΩ
POR
EN
RSI
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.
1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2004, 2005, 2006. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.