1. Sales Training Presentation
FAN5622/4/6: 2, 4 and 6 Channel Linear LED Drivers with Single- Wire Digital Interface
Sales Training Presentation

2. Introduction
FAN562x is a family of linear LED drivers offered by Fairchild Semiconductor for various lighting applications
There are 3 members in this product family:
FAN5622: 2 Channels
FAN5624: 4 Channels
FAN5626: 6 Channels
Small and cost effective lighting solution that provides excellent performance:
Up to 95% efficiency
32 dimming levels
Easy-to-use single-wire digital interface
Very small package formats

3. FAN5622/4/6 2/4/6-ch. Linear LED Driver w/ Digital Dimming Input
Features
2, 4 6 LED outputs at 30mA each
Current sink driver for each LED output
60mV 30mA IOUT (max)
Single-wire digital control interface
Program up to 32 different LED brightness levels
VIN = 2.7V to 5.5V
External RSET current programming
Very low shutdown current
Compact solution requires only single bypass capacitor
Packages:
FAN5622 = Thin SOT23-6
FAN5624 = 1.40 x 1.80 x 0.55mm UMLP-10
FAN5626 = 1.60 x 2.10 x 0.55mm MicroPAK MLP-10
Applications
Ultra Low Cost Mobile Handsets
MP3 Players
Keypad Backlights
Rugged Handheld PCs
Portable Medical Instruments
Portable Measurement Instruments

4. FAN5622/4/6 Application Diagrams

5. FAN562x vs. Competing Solutions
Parameter
FAN5622/4/6
AHK3292/4/6
MIC2842A/4A
RT9302
# of LEDs
2 / 4 / 6
4 / 6 3
Max LED Current
30mA
20mA
Control Interface
Single-Wire (Digital)
Dimming Levels 32 49
16 Steps
VIN Range
2.7V – 5.5V
Drop-out 15mA
50mV
40mV
Peak Efficiency
95%
91%
Not Known
Quiescent Current
0.4 / 0.6 / 0.8mA
1.8 / 2.5 / 2.5mA
1.8mA
0.4mA
Shutdown Current
1µA (max)
10µA (max)
Package Size
3.0 x 3.0 x 1.10mm
1.4 x 1.8 x 0.55mm
1.6 x 2.1 x 0.55mm
3.0 x 3.0 x 0.55m
2.0 x 2.1 x 1.10mm
2.2 x 2.2 x 0.75mm
2.0 x 2.0 x 0.55mm
2.7 x 2.9 x 0.85mm

6. Simple LED Driver Solution Single-Wire Digital Interface
FAN562x Key Advantages
Simple LED Driver Solution
Single-Wire Digital Interface
Small Package Size
When visiting customers and introducing them to FAN562x, explain these 3 key advantages/strengths to customer’s engineers to reinforce the value FAN562x brings to their designs

7. 1. Simple LED Driver Solution
FAN562x products are easy to design linear LED drivers
Only requires 2 external passive components
Input capacitor
Resistor – to set maximum LED current
No EMI noise issues
Simple and easy PCB layout
FAN562x family of linear LED drivers are very easy to design in projects as it only requires an input capacitor and resistor to set the maximum full scale LED current
These parts are linear devices and “act” like LDOs and become more efficient when the battery voltage goes down.
There are no EMI issues unlike boost converter solutions.

8. 2. Single-Wire Digital Interface
Simple to use interface to dim LEDs and turn FAN562x on and off
Apply series of digital pulses to CTRL pin to dim LEDs
Count-down dimming steps
32 linear dimming steps
A very easy to use and implement solution to dim the LEDs and turn the device on or off.
It is set up as a count-down format so to dim the LEDs, a series of digital pulses from the processor needs to be applied to FAN562x parts.
It cannot count up so to start at a higher LED brightness level, more digital pulses need to be inputted to get back to the highest brightness level.
There are a total of 32 brightness levels and are linear.

9. 3. Small Package Size
Smallest package sizes for 4 and 6 channel linear LED drivers in market
FAN5624 = 1.4 x 1.8mm = 2.52mm2
FAN5626 = 1.6 x 2.1mm = 3.36mm2
Competitors’ next smallest package for either 4 or 6 channel linear LED drivers is 2.0 x 2.0mm = 4.00mm2
59% larger than FAN5624
19% larger than FAN5626
MIC2844A
FAN5626
FAN5624
The FAN5624 and FAN5626 are the smallest form factor linear LED driver products in the market today and occupy 2.52mm^2 and 3.36mm^2 respectively.
Competing solutions are at least 4mm^2 or higher.
FAN5622 is pin-to-pin compatible with AHK3292 from AATI.

10. Cannot Operate with Low VIN No PWM Dimming
FAN562x Objections
Lower Efficiency
Cannot Operate with Low VIN
No PWM Dimming
These 3 objections or barriers that may be encountered when visiting customers who balk at using FAN562x in their design
The following slides provides counter arguments to these objections

11. 1. Lower Efficiency
FAN562x devices are very efficient linear LED drivers
Very low drop-out voltage of 50mV to ensure enough headroom for LEDs with higher forward voltage
Li-Ion batteries operate most of time between 3.6V to 3.8V
FAN562x devices would operate with very little power loss and efficiency would remain high – ratio of output voltage to input voltage
Battery Discharge Curve for
Sanyo’s 600mAh and 750mAh
Li-Ion Batteries
FAN562x devices have very low drop-out characteristics to ensure longer operation before the input voltage falls below the forward voltage of the LED.
Also Li-Ion batteries typically operate between 3.6V to 3.8V for most of the time before it needs to be recharged and usually when there is no charge left, the voltage falls off rather quickly.

12. 1. Lower Efficiency Avg. Efficiency = 85% to 90%
Efficiency curve of FAN562x products with LED forward voltage of 3.2V.

13. 2. Cannot Operate with Low VIN
FAN562x parts have very low drop-out voltage to ensure that there is sufficient headroom for the forward voltage of LEDs
~50mV
Most portable electronics tend to shut down at 3,2V to 3.3V
If there is a need to operate at low input voltage then charge pump or boost LED drivers would be a better solution
FAN5701 & FAN5702
FAN5341 & FAN5343
FAN562x LED drivers have very low drop-out voltage which enable it to operate very close to the VIN relative to the forward voltage of the LED.
These parts have a drop-out voltage of 50mV.
Most portable electronics that use Li-Ion batteries tend to shutdown at 3.2V to 3.3V.
If there is a concern with needing to operate with a low input voltage then Fairchild has both charge pump and series boost LED drivers that can be used instead.

14. 3. No PWM Dimming
FAN562x devices were designed using a simple single-wire interface to dim LEDs
If PWM dimming is required then the FAN561x family of linear LED drivers is recommended
FAN562x devices use linear dimming methodology rather than PWM. If there is a requirement for PWM dimming then designers can use Fairchild’s FAN561x product family of linear LED drivers.

15. FA562x Applications Mobile Handset Space Industrial/Measurement
LCD Modules
Industrial/Measurement
Ruggedized Handhelds
Measurement/Test Equipment
Oscilloscopes
Spectrum Analyzers
Network Analyzers
Payment Kiosks/Systems
PC Products
PC All-In-One Printers
Portable Consumer
Digital Still Cameras
Video Camcorders
MP3 Players
PMP Players
GPS Handhelds

16. FAN562x Handset Applications
Main Displays
Main Displays in Medical Devices

17. FAN562x Applications - Other
Main Display in Industrial/Embedded Devices
Ultra Low Cost Consumer Electronics

18. Potential FAN562x Customers
Mobile Handsets
MP3/PMP Players
Medical Equipment
Printers & Fax Machines
Industrial & Measurement
Nokia
Apple
Johnson & Johnson HP
Motorola
Sony/Ericsson
Samsung
Brother
Intermec
Sony
Verifone
iRiver
Lexmark
Tektronix
LG Mobile
Creative Labs
Canon
Agilent
Philips
Epson
Lecroy
Pantech/Curitel
Microsoft
OKI
Rhode & Schwarz
Fujitsu
Nextar
Anritsu
NEC
SanDisk
Qualcomm
Nintendo
Broadcom
Infineon
ST/EMP

19. Summary
FAN5702 is an ideal LCD backlighting solution for designs mid to high-end portable products including smartphones
Able to support larger displays with 6 LED outputs
Configurable LED outputs to provide greater design/feature flexibility
High dimming resolution
Dynamic backlight control feature to improve visual experience
Small form factor to save PCB space

20. Pricing & Availability
Fairchild Part Number
Package
Unit 1ku
Availability
FAN5622SX
SSOT23-6
$0.47
Now
FAN5624UMPX
UMLP-10
$0.55
FAN5626LX
MicroPAK MLP-10
$0.63

21. Technical Materials FAN562x Datasheet
FAN562x Product Overview
Evaluation Boards
Request via KICC or external web
Samples

22. Marketing & Apps Contacts
Marketing Contact
Wayne Seto
Applications Support
Sam Song
x360