ISL9103IRUNZ-T Intersil, ISL9103IRUNZ-T Datasheet

ISL9103IRUNZ-T

Manufacturer Part Number

ISL9103IRUNZ-T

Description

IC CONV SYNC 3.3V 500MA 6-UTDFN

Manufacturer

Intersil

Type

Step-Down (Buck)r

Datasheet

1.ISL9103AIRUAZ-T.pdf (13 pages)

Specifications of ISL9103IRUNZ-T

Internal Switch(s)

Yes

Synchronous Rectifier

Yes

Number Of Outputs

Voltage - Output

3.3V

Current - Output

500mA

Frequency - Switching

2.4MHz

Voltage - Input

2.7 ~ 6 V

Operating Temperature

-40°C ~ 85°C

Mounting Type

Surface Mount

Package / Case

6-µTDFN

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Power - Output

Current page: 1 of 13
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500mA 2.4MHz Low I

Synchronous Buck Converter

The ISL9103, ISL9103A is a 500mA, 2.4MHz step-down

regulator, which is ideal for powering low-voltage

microprocessors in compact devices such as PDAs and

cellular phones. It is optimized for generating low output

voltages down to 0.8V. The supply voltage range is from

2.7V to 6V allowing the use of a single Li+ cell, three NiMH

cells or a regulated 5V input. It has guaranteed minimum

output current of 500mA. A high switching frequency of

2.4MHz pulse-width modulation (PWM) allows using small

external components. Under light load condition, the device

operates at low I

current for highest light load efficiency to maximize battery

life, and it automatically switches to fixed frequency PWM

mode under heavy load condition.

The ISL9103, ISL9103A includes a pair of low

ON-resistance P-Channel and N-Channel internal MOSFETs

to maximize system efficiency and minimize the external

component count. 100% duty-cycle operation allows less

than 300mV dropout voltage at 500mA.

The ISL9103, ISL9103A offers internal digital soft-start,

enable for power sequence, overcurrent protection and

thermal shutdown functions. In addition, the ISL9103,

ISL9103A offers a quick bleeding function that discharges

the output capacitor when the IC is disabled.

The ISL9103, ISL9103A is offered in a 1.6x1.6mm µTDFN

package. The complete converter occupies less than

0.5cm

Pinout

skip mode with typical 20µA quiescent

VIN

(6 LD 1.6x1.6 µTDFN)

ISL9103, ISL9103A

TOP VIEW

High Efficiency

Data Sheet

GND

1-888-INTERSIL or 1-888-468-3774

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

Features

• High Efficiency Integrated Synchronous Buck Regulator

• 2.7V to 6.0V Supply Voltage

• 2.4MHz PWM Switching Frequency

• 500mA Guaranteed Output Current

• 3% Output Accuracy Over-Temperature and Line for Fixed

• 20µA Quiescent Supply Current in Skip Mode

• Less than 1µA Logic Controlled Shutdown Current

• 100% Maximum Duty Cycle for Lowest Dropout

• Ultrasonic Switching Frequency at Skip Mode to Prevent

• Discharge Output Capacitor when Disabled

• Internal Digital Soft-Start

• Peak Current Limiting, Short Circuit Protection

• Over-Temperature Protection

• Chip Enable

• Small 6 Pin 1.6mmx1.6mm µTDFN Package

• Pb-Free (RoHS Compliant)

Applications

• Single Li-ion Battery-Powered Equipment

• Mobile Phones and MP3 Players

• PDAs and Palmtops

• WCDMA Handsets

• Portable Instruments

November 24, 2009

with up to 95% Efficiency

Output Options

Audible Frequency Noise (For ISL9103A Only)

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

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

ISL9103, ISL9103A

FN6828.2

Related parts for ISL9103IRUNZ-T

ISL9103IRUNZ-T Summary of contents

Page 1

... Portable Instruments CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. | 1-888-INTERSIL or 1-888-468-3774 Intersil (and design registered trademark of Intersil Americas Inc. Copyright Intersil Americas Inc. 2009. All Rights Reserved All other trademarks mentioned are the property of their respective owners. FN6828.2 ...

Page 2

... Pin Descriptions PIN NUMBER PIN NAME 1 VIN GND 6 SW Ordering Information PART NUMBER PART (Notes MARKING ISL9103IRUNZ-T J0 ISL9103IRUJZ-T J1 ISL9103IRUFZ-T J2 ISL9103IRUDZ-T J3 ISL9103IRUCZ-T J4 ISL9103IRUBZ-T J5 ISL9103IRUWZ-T J6 ISL9103IRUAZ-T J7 ISL9103AIRUNZ-T J8 ISL9103AIRUJZ-T J9 ISL9103AIRUFZ-T K0 ISL9103AIRUDZ-T K1 ISL9103AIRUCZ-T K2 ISL9103AIRUBZ-T K3 ISL9103AIRUWZ-T K4 ISL9103AIRUAZ-T K5 NOTES: 1. Please refer to TB347 for details on reel specifications. 2. Other output voltage options may be available upon request, please contact Intersil for more details. ...

Page 3

... Thermal Information Thermal Resistance (Typical, Note 1.6x1.6 µTDFN Package . . . . . . . . . . . . . . . . . Junction Temperature Range .-40°C to +125°C Storage Temperature Range . . . . . . . . . . . . . . . . . .-65°C to +150°C Pb-free Reflow Profile . . . . . . . . . . . . . . . . . . . . . . . . .see link below http://www.intersil.com/pbfree/Pb-FreeReflow.asp = 10µ (see “Typical Applications” on page 8). Boldface limits apply over the 2 OUT SYMBOL ...

Page 4

Electrical Specifications Unless otherwise noted, all parameter limits are guaranteed over the recommended operating conditions and the typical specifications are measured at the following conditions 10µ operating temperature range, -40°C to +85°C. (Continued) PARAMETER SW ...

Page 5

Typical Operating Performance 2.520 2.515 VIN = 4.0V, RISING 2.510 2.505 VIN = 4.0V, FALLING 2.500 2.495 0 100 200 300 I (mA) OUT FIGURE 5. OUTPUT VOLTAGE vs LOAD CURRENT (ISL9103, VO_NORMINAL = 2.5V) 5V/DIV 1V/DIV 500mA/DIV 5V/DIV FIGURE ...

Page 6

Typical Operating Performance 5V/DIV V SW 50mV/DIV V OUT 20mA/DIV I L FIGURE 11. LOAD TRANSIENT IN PFM MODE ( 2.5V, 5mA TO 30mA) OUT 5V/DIV 50mV/DIV 200mA/DIV FIGURE 13. LOAD TRANSIENT FROM PFM TO PWM MODE (V ...

Page 7

Typical Operating Performance 5V/DIV V SW 50mV/DIV V (AC COUPLED) OUT 500mA/DIV I o FIGURE 17. LOAD TRANSIENT IN PWM MODE ( 1.5V, 200mA TO 500mA) O 5V/DIV 50mV/DIV 500mA/DIV FIGURE 19. LOAD TRANSIENT IN PWM MODE (V ...

Page 8

Typical Applications INPUT: 2. 10µF ENABLE DISABLE INPUT: 2. µ F ENABLE DISABLE Note: For adjustable output version, the internal feedback resistor divider is disabled and the FB pin is directly connected to ...

Page 9

Block Diagram ...

Page 10

EAMP v CSA OUT FIGURE 23. PWM OPERATION WAVEFORMS The output voltage is regulated by controlling the reference voltage to the current loop. The bandgap circuit outputs a 0.8V reference voltage to the voltage control ...

Page 11

Overcurrent Protection The overcurrent protection is provided on ISL9103, ISL9103A when overload condition happens realized by monitoring the CSA output with the OCP comparator, as shown in Figure 22. When the current at P-Channel MOSFET is sensed to ...

Page 12

... Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use ...

Page 13

Package Outline Drawing L6.1.6x1.6 6 LEAD ULTRA THIN DUAL FLAT NO-LEAD COL PLASTIC PACKAGE (UTDFN COL) Rev 1, 11/07 1.60 6 PIN 1 INDEX AREA (4X) 0.15 TOP VIEW ( ...

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