ISL6414IR-TK Intersil, ISL6414IR-TK Datasheet

ISL6414IR-TK

Manufacturer Part Number

ISL6414IR-TK

Description

TRIPLE OUTPUT LOW DROPOUT LINEAR REG. WITH FAULT PIN MODIFIC

Manufacturer

Intersil

Datasheet

1.ISL6414IR-TK.pdf (12 pages)

Specifications of ISL6414IR-TK

Rohs Compliant

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Triple Output, Low-Noise LDO Regulator

with Integrated Reset Circuit

The ISL6414 is an ultra low noise triple output LDO regulator

with microprocessor reset circuit and is optimized for

powering wireless chip sets. The IC accepts an input voltage

range of 3.0V to 3.6V and provides three regulated output

voltages: 1.8V (LDO1), 2.84V (LDO2), and another ultra

clean 2.84V (LDO3). On chip logic provides sequencing

between LDO1 and LDO2 for BBP/MAC and I/O supply

voltage outputs. LDO3 features ultra low noise that does not

typically exceed 30µV RMS to aid VCO stability. High

integration and the thin Quad Flat No-lead (QFN) package

makes ISL6414 an ideal choice to power many of today’s

small form factor industry standard wireless cards, such as

PCMCIA, mini-PCI and Cardbus-32.

The ISL6414 uses an internal PMOS transistor as the pass

device. The SHDN pin controls LDO1 and LDO2 outputs

whereas SHDN3 controls LDO3 output. Internal voltage

sequencing insures that LDO1 output (1.8V supply) is

always stabilized before LDO2 is turned on. When powering

down, power to the LDO2 is removed before the LDO1

output goes off. The ISL6414 also integrates RESET

function, which eliminates the need for additional RESET IC

required in WLAN applications. The IC asserts a RESET

signal whenever the V

threshold, keeping it asserted for at least 25ms after V

risen above the reset threshold. An output fault detection

circuit indicates loss of regulation on LDO1. Other features

include an overcurrent protection, thermal shutdown and

reverse battery protection.

Ordering Information

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.

ISL6414IR

ISL6414IR-T5K

ISL6414IR-TK

ISL6414IRZ (Note)

ISL6414IRZ-TK

(Note)

PART NUMBER

16 Ld QFN Tape and Reel

(Pb-free)

RANGE (°C)

-40 to +85

TEMP.

supply voltage drops below a preset

16 Ld QFN

(Pb-free)

Data Sheet

PACKAGE

L16.4x4

DWG. #

PKG.

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

has

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

Features

• Small DC/DC Converter Size

• High Output Current

• Ultra-Low Dropout Voltage

• Ultra-Low Output Voltage Noise

• Stable with Smaller Ceramic Output Capacitors

• Voltage Sequencing for BBP/MAC and Analog Supplies

• Extensive Protection and Monitoring Features

• Logic-Controlled Dual Shutdown Pins

• Integrated Microprocessor Reset Circuit

• Proven Reference Design for Total WLAN System

• QFN Package Option

• Pb-Free Plus Anneal Available (RoHS Compliant)

Applications

• PRISM® 3, PRISM GT™, and PRISM WWR Chipsets

• WLAN Cards

• Hand-Held Instruments

- Three LDOs and RESET Circuitry in a Low-Profile

- LDO1, 1.8V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 500mA

- LDO2, 2.84V. . . . . . . . . . . . . . . . . . . . . . . . . . . . 300mA

- LDO3, 2.84V. . . . . . . . . . . . . . . . . . . . . . . . . . . . 200mA

- LDO2, 2.84V. . . . . . . . . . . . . . . 125mV (typ.) at 300mA

- LDO3, 2.84V. . . . . . . . . . . . . . . 100mV (typ.) at 200mA

- <30µV

- Overcurrent and short circuit protection

- Thermal shutdown

- Reverse battery protection

- FAULT indicator

- Programmable Reset Delay

- Complimentary Reset Outputs

Solution

- Compliant to JEDEC PUB95 MO-220 QFN - Quad Flat

- Near Chip-Scale Package Footprint Improves PCB

- PCMCIA, Cardbus32, MiniPCI Cards

- Compact Flash Cards

4x4mm QFN Package

No Leads - Product Outline

Efficiency and Is Thinner in Profile

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

August 2004

RMS

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

(typ.) for LDO3 (VCO Supply)

ISL6414

FN9128.1

Related parts for ISL6414IR-TK

ISL6414IR-TK Summary of contents

Page 1

... Ordering Information TEMP. PART NUMBER RANGE (°C) PACKAGE ISL6414IR - QFN ISL6414IR-T5K 16 Ld QFN Tape and Reel ISL6414IR- QFN Tape and Reel ISL6414IRZ (Note) - QFN (Pb-free) ISL6414IRZ- QFN Tape and Reel (Note) (Pb-free) NOTE: Intersil Pb-free plus anneal products employ special Pb-free material sets ...

Page 2

Pinout ISL6414 (QFN) TOP VIEW RESET CT 2 SHDN 3 SHDN3 Typical Application Schematic +3. 3.3µF C7 0.01µF +2.84V V OUT3 C5 3.3µF 2 ISL6414 12 OUT1 ...

Page 3

Functional Block Diagram VIN 15 FAULT VIN 3 SHDN 4 SHDN3 RESET 1 RESET 8 GND 3 ISL6414 Gm BAND GAP WINDOW REF. COMP 1.2V Gm THERMAL SHUT DOWN 150°C Gm CONTROL LOGIC ENABLES RESET POR POR ...

Page 4

Absolute Maximum Ratings (Note SHDN/SHDN3 to GND/GND3 . . . . . . . . . . . . . . . -7.0V to 7.0V IN SET, CC, FAULT to GND/GND3 . . . . . . ...

Page 5

Electrical Specifications V = +3.3V, Compensation Capacitor = 33nF PARAMETER Output Voltage Noise LDO3 SPECIFICATIONS Output Voltage (V ) OUT3 Output Voltage Accuracy Maximum Output Current (I ) (Note 6) OUT3 Output Current Limit (Note 6) Dropout Voltage ...

Page 6

Typical Performance Curves TIME (1ms/DIV) FIGURE 3. LINE TRANSIENT RESPONSE ( TIME (1ms/DIV) FIGURE 5. LINE TRANSIENT RESPONSE ( 100 0 TIME (2ms/DIV) FIGURE 7. LOAD TRANSIENT RESPONSE (V ...

Page 7

Typical Performance Curves 1.2 1.1 1 0.9 0.8 -40 - TEMPERATURE (°C) FIGURE 9. LD01 LOAD REGULATION vs TEMPERATURE 1.4 1.3 1.2 1.1 1 0.9 0.8 -40 - TEMPERATURE (°C) FIGURE 11. LD03 LOAD REGULATION vs ...

Page 8

Typical Performance Curves 8.3 8.25 8.2 8.15 8.1 8.05 8 -40 - TEMPERATURE (°C) FIGURE 15. SHUTDOWN CURRENT vs TEMPERATURE 180 160 140 120 100 -40 - TEMPERATURE (°C) FIGURE 17. ...

Page 9

Pin Descriptions OUT1 - This pin is the output for LDO1. Bypass with a minimum of 2.2µF, low ESR capacitor to GND for stable operation Supply input pins. Connect to input power source. IN Bypass with 2.2µF capacitor ...

Page 10

Output Voltages The ISL6414 provides fixed output voltages for use in Wireless Chipset applications. Internal trimmed resistor networks set the typical output voltages as shown here 1.8V 2.84V; V OUT1 OUT2 OUT3 Shutdown Driving the SHDN ...

Page 11

For stable operation, a ceramic capacitor whose value is minimum 3.3µF is recommended for V 300mA output current and 2.2µF is recommended for V and V each at 200mA load ...

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 ...

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