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EL7562 Schematic ( PDF Datasheet ) - Intersil Corporation

Teilenummer EL7562
Beschreibung Monolithic 2Amp DC-DC Step-Down Regulator
Hersteller Intersil Corporation
Logo Intersil Corporation Logo 




Gesamt 9 Seiten
EL7562 Datasheet, Funktion
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.
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
Pinout
www.DataSheet4U.com
EL7562
(16 LD QSOP)
TOP VIEW
• 16 Ld QSOP package
• Pb-free plus anneal available (RoHS compliant)
Applications
• DSP, CPU core and IO supplies
• Logic/Bus supplies
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
• Portable equipment
• DC-DC converter modules
• GTL + Bus power supply
Ordering Information
C1 C2
100µF 0.1µF
VIN
(4.5V- 5.5V)
5 PGND
LX 12
6 VIN
LX 11
7 VIN
VHI 10
8 EN
PGND 9
C6
0.1µF
VO
(3.3V,
C7 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)
Please refer to page 4 for 3.3V input Application Diagram
Manufactured under U.S. Patent No. 57,323,974
EL7562CUZ-T7 7562CUZ
(Note)
EL7562CUZ-T13 7562CUZ
(Note)
7” 16 Ld QSOP MDP0040
(Pb-free)
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.






EL7562 Datasheet, Funktion
Typical Performance Curves (Continued)
Oscillator Frequency vs Temperature
390
COSC=390p
385
380
375
370
365
360
0
10 20 30 40 50 60 70 80 90 100 110
TEMPERATURE (°C)
Switching Frequency vs COSC
1400
1200
1000
800
600
400
200
0
0 200 400 600
COSC (pF)
800 1000
Input Current vs Temperature
(Enable connected to GND)
0.96
0.94
VIN=5.5
0.92
0.9
0.88
VIN=4.5
VIN=5V
0.86
0.84
0.82
0.8
0
10 20 30 40 50 60 70 80 90 100 110
TEMPERATURE (°C)
6

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