FAN5606DMPX

FAN5606DMPX Datasheet

FAN5606

Part	Datasheet
FAN5606DMPX	FAN5606DMPX (pdf)

PDF Datasheet Preview
FAN5606 Serial LED Driver with Current-Regulated, Step-Up DC/DC Converter • Drives Up to Six LEDs in Series • Pulse Skip PWM Mode of Operation of the Boost Circuit • Up to 90% Peak • No External Schottky Diode Required • Up to 25mA Output • Built-in DAC for Digital Brightness Control • LED’s Current Can be Duty-Cycle-Modulated • Digital, Analog, and PWM Brightness Control • 2.7V to 5.5V Input Voltage Range • 0.5MHz Operating Frequency 8MHz internal clock • Soft Start • Low Shutdown Current ICC < 1µA • LED Short Circuit Protection • Minimal External Components Needed • Available in an 8-lead MLP Package • Cell Phones • Handheld Computers • PDAs, DSCs, MP3 Players • Keyboard Backlights • LED Display The FAN5606 LED driver generates regulated output currents from a battery with input voltage varying between 2.7V to 5V. An internal NMOS switch drives an external inductor, and a Schottky diode delivers the inductor’s stored energy to the load. Soft start circuitry prevents excessive current drawn from the supply during power on. Any number of LEDs can be connected in series as long as the summed forward voltages do not lead to exceeding the operating output voltage range. In the FAN5606 device, the internal two-bit D/A converters provide programmability of the output channel current. Analog programming of the output current is also possible in the FAN5606. To do this, ground the “B” pin and connect a resistor between the “A” pin and a supply voltage. The output current can then be programmed to any desired value within its range. The analog version uses a single external resistor to set the current, and to turn the device ON and OFF. The device is available in an 8-lead MLP package. Analog Brightness Control 2.7V to 5.5V L = 6.8µH CIN VExternal IND VOUT GINND 4.7µF FAN5606 Digital Brightness Control VOUT 2.7V to 5.5V L = 6.8µH DAC Inputs GINND CAT B 4.7µF VOUT FAN5606 Pin Assignment A1 B2 CAT 3 IND 4 8 VIN 7 NC 6 GND 5 VOUT FAN5606 8-Lead 3x3mm MLP PRODUCT SPECIFICATION Pin Descriptions Pin No. 1 2 3 4 5 6 7 8 Pin Name A B CAT IND VOUT GND NC VIN Pin Function Description DAC A Input DAC B Input LED Cathode Inductor Output LED’s Anode Ground No Connection Input Voltage of Terms Output Current Accuracy the difference between the measured value of the output current LED and programmed value of this current. Output Current Accuracy % = programmed is expressed as a ratio between the electrical power into the LEDs and the total power consumed from the input power supply. Efficiency % = this leads to a lower value than the boost converter it more accurately better system performance, from the user’s point-of-view. PRODUCT SPECIFICATION Absolute Maximum Ratings Parameter VIN, A, B Voltage to GND VOUT, CAT Voltage to GND Any LED Short Circuit Duration Anode to Cathode Lead Soldering Temperature 10 seconds Thermal Resistance Operating Junction Temperature Range Storage Temperature Range Electrostatic Discharge ESD Protection Note 1, 2 FAN5606 Ordering Information Product Number FAN5606 Package Type 8-Lead 3x3mm MLP Order Code FAN5606DMPX FAN5606 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.

PDF Datasheet Preview

FAN5606

Serial LED Driver with Current-Regulated, Step-Up DC/DC Converter
• Drives Up to Six LEDs in Series
• Pulse Skip PWM Mode of Operation of the Boost Circuit
• Up to 90% Peak
• No External Schottky Diode Required
• Up to 25mA Output
• Built-in DAC for Digital Brightness Control
• LED’s Current Can be Duty-Cycle-Modulated
• Digital, Analog, and PWM Brightness Control
• 2.7V to 5.5V Input Voltage Range
• 0.5MHz Operating Frequency 8MHz internal clock
• Soft Start
• Low Shutdown Current ICC < 1µA
• LED Short Circuit Protection
• Minimal External Components Needed
• Available in an 8-lead MLP Package
• Cell Phones
• Handheld Computers
• PDAs, DSCs, MP3 Players
• Keyboard Backlights
• LED Display

The FAN5606 LED driver generates regulated output currents from a battery with input voltage varying between 2.7V to 5V. An internal NMOS switch drives an external inductor, and a Schottky diode delivers the inductor’s stored energy to the load. Soft start circuitry prevents excessive current drawn from the supply during power on. Any number of LEDs can be connected in series as long as the summed forward voltages do not lead to exceeding the operating output voltage range.

In the FAN5606 device, the internal two-bit D/A converters provide programmability of the output channel current. Analog programming of the output current is also possible in the FAN5606. To do this, ground the “B” pin and connect a resistor between the “A” pin and a supply voltage. The output current can then be programmed to any desired value within its range. The analog version uses a single external resistor to set the current, and to turn the device ON and OFF. The device is available in an 8-lead MLP package.

Analog Brightness Control
2.7V to 5.5V L = 6.8µH CIN

VExternal

IND VOUT GINND
4.7µF

FAN5606

Digital Brightness Control

VOUT 2.7V to 5.5V L = 6.8µH

DAC Inputs

GINND

CAT B
4.7µF

VOUT

FAN5606

Pin Assignment

A1 B2 CAT 3 IND 4
8 VIN 7 NC 6 GND 5 VOUT

FAN5606 8-Lead 3x3mm MLP

PRODUCT SPECIFICATION

Pin Descriptions

Pin No. 1 2 3 4 5 6 7 8

Pin Name A B

CAT IND VOUT GND NC VIN

Pin Function Description DAC A Input DAC B Input LED Cathode Inductor Output LED’s Anode Ground No Connection Input Voltage
of Terms

Output Current Accuracy the difference between the measured value of the output current LED and programmed value of this current.

Output Current Accuracy % = programmed
is expressed as a ratio between the electrical power into the LEDs and the total power consumed from the input power supply.

Efficiency % = this leads to a lower value than the boost converter it more accurately better system performance, from the user’s point-of-view.

PRODUCT SPECIFICATION

Absolute Maximum Ratings

Parameter VIN, A, B Voltage to GND VOUT, CAT Voltage to GND Any LED Short Circuit Duration Anode to Cathode Lead Soldering Temperature 10 seconds Thermal Resistance Operating Junction Temperature Range Storage Temperature Range Electrostatic Discharge ESD Protection Note 1, 2

FAN5606
Ordering Information

Product Number FAN5606

Package Type 8-Lead 3x3mm MLP

Order Code FAN5606DMPX

FAN5606

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.

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived FAN5606DMPX Datasheet file may be downloaded here without warranties.

Datasheet ID: FAN5606DMPX 513941