EL7562CU-T13 INTERSIL [Intersil Corporation], EL7562CU-T13 Datasheet

EL7562CU-T13

Manufacturer Part Number

EL7562CU-T13

Description

Monolithic 2Amp DC-DC Step-Down Regulator

Manufacturer

INTERSIL [Intersil Corporation]

Datasheet

1.EL7562CU-T13.pdf (9 pages)

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Monolithic 2Amp DC-DC Step-Down

Regulator

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

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

(4.5V- 5.5V)

Please refer to page 4 for 3.3V input Application Diagram

Manufactured under U.S. Patent No. 57,323,974

39Ω

100µF

0.1µF

area. The minimal external components and

0.1µF

270pF

The EL7562 is an integrated,

synchronous step-down regulator with

output voltage adjustable from 1.0V to

(16-PIN QSOP)

TOP VIEW

EL7562

SGND

COSC

VDD

PGND

VIN

PGND

VDRV

Data Sheet

VREF

VHI

0.1µF

1kΩ

0.1µF

2.37kΩ

1-888-INTERSIL or 321-724-7143

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

100µF

(3.3V,

2A)

Features

• Integrated synchronous MOSFETs and current mode

• 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-pin QSOP package

Applications

• DSP, CPU core and IO supplies

• Logic/Bus supplies

• Portable equipment

• DC-DC converter modules

• GTL + Bus power supply

Ordering Information

EL7562CU

EL7562CU-T7

EL7562CU-T13 16-Pin QSOP

controller

NUMBER

PART

All other trademarks mentioned are the property of their respective owners.

April 30, 2004

Intersil (and design) is a registered trademark of Intersil Americas Inc.

16-Pin QSOP

PACKAGE

TAPE & REEL

13”

7”

EL7562

PKG. DWG. #

MDP0040

FN7295

Related parts for EL7562CU-T13

EL7562CU-T13 Summary of contents

Page 1

... EL7562CU 10 EL7562CU-T7 9 EL7562CU-T13 16-Pin QSOP CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. | 1-888-INTERSIL or 321-724-7143 Copyright © 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. ...

Page 2

Absolute Maximum Ratings (T A Supply Voltage between and GND . . . . . . . . . . . . +6. Voltage . . . . . . . . . . ...

Page 3

Closed-Loop AC Electrical Specifications PARAMETER DESCRIPTION F Oscillator Initial Accuracy OSC t Minimum Oscillator Sync Width SYNC M Soft-start Slope SS t FET Break Before Make Delay BRM t High Side FET Minimum On Time LEB D Maximum Duty Cycle ...

Page 4

Application Diagram for 3.3V Input C 3 0.1µ 39Ω 100µF 0.1µ (3V-3.6V SGND PGND 270pF 2 COSC VREF 15 3 VDD PGND VDRV 13 5 PGND ...

Page 5

Typical Performance Curves Efficiency =5V IN 100 =1 0.1 1 Load Current I Efficiency =3.3V O 100 V =4.5 IN ...

Page 6

Typical Performance Curves Oscillator Frequency vs Temperature 390 C =390p OSC 385 380 375 370 365 360 Temperature (°C) Switching Frequency vs C OSC 1400 1200 1000 800 600 400 200 0 0 200 ...

Page 7

Block Diagram Junction Temperature Controller Supply 39Ω VDD 5V 0.1µF EN SGND Applications Information Circuit Description General The EL7562 is a fixed frequency, current mode controlled DC-DC converter with integrated N-channel power MOSFETs and a high precision reference. The device ...

Page 8

The resulting system offers several advantages over traditional voltage control systems, including simpler loop compensation, pulse by pulse current limiting, rapid response to line variation and good load step response. The heart of the controller ...

Page 9

Figure 1 shows a typical connection. 100p BAT54 External Oscillato FIGURE 1. Oscillator Synchronization Thermal Shut-down An internal temperature sensor continuously monitors die temperature. In the event that die temperature exceeds the thermal trip-point, the system is ...

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