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Sheet
Data
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EL7562
April 30, 2004
FN7295
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-pin QSOP package. With proper
external components, the whole converter fits into a less
than 0.5 in
2
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掳C to +70掳C
temperature range.
Features
鈥?Integrated synchronous MOSFETs and current mode
controller
鈥?2A continuous output current
鈥?Up to 95% efficiency
鈥?3.3V or 5V nominal input voltage
鈥?Adjustable output from 1V to 3.8V
鈥?Cycle-by-cycle current limit
鈥?Precision reference
鈥?卤0.5% load and line regulation
鈥?Adjustable switching frequency to 1MHz
鈥?Oscillator synchronization possible
鈥?Internal soft-start
鈥?Over-temperature protection
鈥?Under-voltage lockout
鈥?16-pin QSOP package
Pinout
EL7562
(16-PIN QSOP)
TOP VIEW
Applications
鈥?DSP, CPU core and IO supplies
鈥?Logic/Bus supplies
鈥?Portable equipment
C
3
R
3
39鈩?/div>
C
4
1 SGND
2 COSC
3 VDD
4 PGND
PGND 16
VREF 15
FB 14
VDRV 13
LX 12
LX 11
VHI 10
PGND 9
0.1碌F 270pF
C
5
0.1碌F R
2
R
1
2.37k鈩?/div>
1k鈩?/div>
V
O
(3.3V,
C
7
2A)
100碌F
鈥?DC-DC converter modules
鈥?GTL + Bus power supply
Ordering Information
PART
NUMBER
EL7562CU
EL7562CU-T7
EL7562CU-T13
PACKAGE
16-Pin QSOP
16-Pin QSOP
16-Pin QSOP
TAPE & REEL
-
7鈥?/div>
13鈥?/div>
PKG. DWG. #
MDP0040
MDP0040
MDP0040
C
1
100碌F
C
2
0.1碌F
5 PGND
6 VIN
7 VIN
8 EN
C
6
0.1碌F
V
IN
(4.5V- 5.5V)
Please refer to page 4 for 3.3V input Application Diagram
Manufactured under U.S. Patent No. 57,323,974
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143
|
Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright 漏 Intersil Americas Inc. 2004. All Rights Reserved. Elantec is a registered trademark of Elantec Semiconductor, Inc.
All other trademarks mentioned are the property of their respective owners.
EL7562CU PDF文件相关型号
EL7563,EL7564CM,EL7571,EL7571CM
EL7562CU 产品属性
表面贴装
3.9mm
QSOP
4.9 x 3.9 x 1.4mm
有
16
0 °C
5 V
3.8 V
2A
3.3 V
1 V
+70 °C
1000 kHz
0.5 %
下降
0.5 %
1
可调整的
4.9mm
1.4mm
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