EL7562_06 Datasheet, PDF (1/9 Pages) Intersil Corporation – Monolithic 2Amp DC-DC Step-Down Regulator

NOT ^{RECOM® MESNEDEEDDEatLFa7O5SR3h2NeeEtW DESIGNS}
May 1, 2006
EL7562
FN7295.1
Monolithic 2Amp DC-DC Step-Down
Regulator
The EL7562 is an integrated, synchronous step-down
regulator with output voltage adjustable from 1.0V to 3.8V. It
is capable of delivering 2A continuous current at up to 95%
efficiency. The EL7562 operates at a constant frequency
pulse width modulation (PWM) mode, making external
synchronization possible. Patented on-chip resistorless
current sensing enables current mode control, which
provides cycle-by-cycle current limiting, over-current
protection, and excellent step load response. The EL7562 is
available in a fused-lead 16 Ld QSOP package. With proper
external components, the whole converter fits into a less
than 0.5 in² area. The minimal external components and
small size make this EL7562 ideal for desktop and portable
applications.
The EL7562 is specified for operation over the 0°C to +70°C
temperature range.
Pinout
EL7562
(16 LD QSOP)
TOP VIEW
Features
• Integrated synchronous MOSFETs and current mode
controller
• 2A continuous output current
• Up to 95% efficiency
• 3.3V or 5V nominal input voltage
• Adjustable output from 1V to 3.8V
• Cycle-by-cycle current limit
• Precision reference
• ±0.5% load and line regulation
• Adjustable switching frequency to 1MHz
• Oscillator synchronization possible
• Internal soft-start
• Over-temperature protection
• Under-voltage lockout
• 16 Ld QSOP package
• Pb-free plus anneal available (RoHS compliant)
Applications
C₃
C₄
0.1µF 270pF
R₃
39Ω
1 SGND PGND 16
2 COSC VREF 15
3 VDD
FB 14
4 PGND VDRV 13
C₅
0.1µF R₂
R₁ 2.37kΩ
1kΩ
• DSP, CPU core and IO supplies
• Logic/Bus supplies
• Portable equipment
• DC-DC converter modules
• GTL + Bus power supply
Ordering Information
C₁
C₂
100µF 0.1µF
V_IN
(4.5V- 5.5V)
5 PGND
LX 12
6 VIN
LX 11
7 VIN
VHI 10
8 EN
PGND 9
C₆
0.1µF
Please refer to page 4 for 3.3V input Application Diagram
Manufactured under U.S. Patent No. 57,323,974
V_O
(3.3V,
C_{7 2A)}
100µF
PART TAPE &
PKG.
PART NUMBER MARKING REEL PACKAGE DWG. #
EL7562CU
7562CU
- 16 Ld QSOP MDP0040
EL7562CU-T7 7562CU
7” 16 Ld QSOP MDP0040
EL7562CU-T13 7562CU
13” 16 Ld QSOP MDP0040
EL7562CUZ
(Note)
7562CUZ
- 16 Ld QSOP MDP0040
(Pb-free)
EL7562CUZ-T7 7562CUZ
(Note)
7” 16 Ld QSOP MDP0040
(Pb-free)
EL7562CUZ-T13 7562CUZ
(Note)
13” 16 Ld QSOP MDP0040
(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.
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, 2006. All Rights Reserved.
All other trademarks mentioned are the property of their respective owners.