FAN5609MPX

FAN5609MPX Datasheet

FAN5609

Part	Datasheet
FAN5609MPX	FAN5609MPX (pdf)

Related Parts	Information
FAN5609MTCX	FAN5609MTCX

PDF Datasheet Preview
FAN5609 LED Driver with Adaptive Charge Pump DC/DC Converter • Parallel LED Driver Supports All Forward Voltages • Adaptive VOUT Adjustment to the Highest Diode Voltage • Internally Matched LED Current Sources • No External Components Needed to Set LED Current • Built-in Charge Pump has Three Modes of Operation: Linear Regulation VIN > 4.2V 3/2 DC-DC Converter and Regulation 3.6V<VIN<4.2V 2/1 DC-DC Converter and Regulation 2.7V<VIN<3.6V • Up to 86% • Low EMI, Low Ripple • Up to 80mA Output Current 4 x 20mA • Built-in DAC for Digital or PWM Brightness Control • Can be Duty Cycle Modulated between 0 to 18mA • 2.7V to 5.5V Input Voltage Range • ICC < 2µA in Shutdown Mode • 1MHz Operating Frequency • Shutdown Isolates Output from Input • Soft-Start Limits Inrush Current • Short Circuit Protection • Minimal External Components Needed • Available in a 14-lead TSSOP Package • Available in a 16-lead MLP Package • Cell Phones • Handheld Computers • PDA, DSC, MP3 Players • Keyboard Backlight • LED Displays The FAN5609 generates regulated output current from a battery with input voltage varying between 2.7V to 5.5V. Switch and fractional switching techniques are utilized to achieve high over the entire input voltage range. A proprietary internal circuitry continuously monitors each LED current loop and automatically adjusts the generated output DC voltage to the lowest minimum value required by the LED having the highest forward voltage. This adaptive nature of the FAN5609 eliminates the need for LED pre-selection matching and ensures operation at high When the input voltage is high to sustain the programmed current level in the LEDs, the FAN5609 itself to operate as a linear regulator, and the DC-DC converter is turned off. An internal two-bit digital to analog converter provides programmability of the output currents. Only two 0.1µF bucket capacitors and two 4.7µF input/output capacitors are needed for proper operation. Soft-start circuitry prevents excessive current draw during power on. The device has built-in short circuit protection. COUT VOUT VOUT VIN LED- LED- LED- D IN A FAN5609 C IN B LEDCAPCAP+ CAP+ CAP- CAP2 CAP1 FAN5609 PRODUCT SPECIFICATION Pin Assignments Top-View NC CAP2CAP2+ VIN VOUT GND A LED- LED- FAN5609 CAP2CAP2+ CAP1+ CAP1NC LEDLED- FAN5609 14-Lead TSSOP VIN 1 V OUT GND 3 16 15 14 13 12 CAP1+ 11 CAP110 NC 9 LED- 5 67 8 A LEDLEDLED- FAN5609 4x4mm 16-Lead MLP Pin Descriptions Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 FAN5609 Ordering Information Product Number FAN5609 Package Type 14-Lead TSSOP 4mmx4mm 16-Lead MLP PRODUCT SPECIFICATION Order Code FAN5609MTCX FAN5609MPX DISCLAIMER FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS. LIFE SUPPORT POLICY FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: Life support devices or systems are devices or systems which, a are intended for surgical implant into the body, or b support or sustain life, and c whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury of the user. A critical component in any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. 5/30/03 0.0m 005 Stock#DS30005609 2003 Fairchild Semiconductor Corporation

PDF Datasheet Preview

FAN5609

LED Driver with Adaptive Charge Pump DC/DC Converter
• Parallel LED Driver Supports All Forward Voltages
• Adaptive VOUT Adjustment to the Highest Diode Voltage
• Internally Matched LED Current Sources
• No External Components Needed to Set LED Current
• Built-in Charge Pump has Three Modes of Operation:

Linear Regulation VIN > 4.2V 3/2 DC-DC Converter and Regulation 3.6V<VIN<4.2V 2/1 DC-DC Converter and Regulation 2.7V<VIN<3.6V
• Up to 86%
• Low EMI, Low Ripple
• Up to 80mA Output Current 4 x 20mA
• Built-in DAC for Digital or PWM Brightness Control
• Can be Duty Cycle Modulated between 0 to 18mA
• 2.7V to 5.5V Input Voltage Range
• ICC < 2µA in Shutdown Mode
• 1MHz Operating Frequency
• Shutdown Isolates Output from Input
• Soft-Start Limits Inrush Current
• Short Circuit Protection
• Minimal External Components Needed
• Available in a 14-lead TSSOP Package
• Available in a 16-lead MLP Package
• Cell Phones
• Handheld Computers
• PDA, DSC, MP3 Players
• Keyboard Backlight
• LED Displays

The FAN5609 generates regulated output current from a battery with input voltage varying between 2.7V to 5.5V. Switch and fractional switching techniques are utilized to achieve high over the entire input voltage range. A proprietary internal circuitry continuously monitors each LED current loop and automatically adjusts the generated output DC voltage to the lowest minimum value required by the LED having the highest forward voltage. This adaptive nature of the FAN5609 eliminates the need for LED pre-selection matching and ensures operation at high When the input voltage is high to sustain the programmed current level in the LEDs, the FAN5609 itself to operate as a linear regulator, and the DC-DC converter is turned off. An internal two-bit digital to analog converter provides programmability of the output currents. Only two 0.1µF bucket capacitors and two 4.7µF input/output capacitors are needed for proper operation.

Soft-start circuitry prevents excessive current draw during power on. The device has built-in short circuit protection.

COUT

VOUT

VOUT VIN

LED-

LED-

LED-

D IN A

FAN5609

C IN B

LEDCAPCAP+ CAP+

CAP-

CAP2 CAP1

FAN5609

PRODUCT SPECIFICATION

Pin Assignments

Top-View

NC CAP2CAP2+

VIN VOUT GND

A LED-

LED-

FAN5609

CAP2CAP2+ CAP1+ CAP1NC LEDLED-

FAN5609 14-Lead TSSOP

VIN 1

V OUT

GND 3
16 15 14 13
12 CAP1+ 11 CAP110 NC 9 LED-
5 67 8

A LEDLEDLED-

FAN5609 4x4mm 16-Lead MLP

Pin Descriptions

Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

FAN5609
Ordering Information

Product Number FAN5609

Package Type 14-Lead TSSOP 4mmx4mm 16-Lead MLP

PRODUCT SPECIFICATION

Order Code FAN5609MTCX FAN5609MPX

DISCLAIMER

FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS.

LIFE SUPPORT POLICY

FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein:

Life support devices or systems are devices or systems which, a are intended for surgical implant into the body, or b support or sustain life, and c whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury of the user.

A critical component in any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness.
5/30/03 0.0m 005 Stock#DS30005609 2003 Fairchild Semiconductor Corporation

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Datasheet ID: FAN5609MPX 513944