EL7562 Datasheet, PDF (1/9 Pages) Intersil Corporation – Monolithic 2Amp DC-DC Step-Down Regulator

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April 30, 2004
EL7562
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 in² area. The minimal external components and
small size make this EL7562 ideal for desktop and portable
applications.
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
The EL7562 is specified for operation over the 0°C to +70°C
temperature range.
• Over-temperature protection
• Under-voltage lockout
Pinout
• 16-pin QSOP package
EL7562
(16-PIN QSOP)
TOP VIEW
Applications
• DSP, CPU core and IO supplies
• Logic/Bus supplies
C₃
C₄
0.1µF 270pF
R₃
39Ω
C₁
C₂
100µF 0.1µF
V_IN
(4.5V- 5.5V)
1 SGND PGND 16
2 COSC VREF 15
3 VDD
FB 14
4 PGND VDRV 13
5 PGND
LX 12
6 VIN
LX 11
7 VIN
VHI 10
8 EN
PGND 9
• Portable equipment
C₅
0.1µF R₂
R₁ 2.37kΩ
1kΩ
C₆
0.1µF
V_O
(3.3V,
C_{7 2A)}
100µF
• DC-DC converter modules
• GTL + Bus power supply
Ordering Information
PART
NUMBER
EL7562CU
PACKAGE TAPE & REEL
16-Pin QSOP
-
PKG. DWG. #
MDP0040
EL7562CU-T7 16-Pin QSOP
7”
MDP0040
EL7562CU-T13 16-Pin QSOP
13”
MDP0040
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.
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