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Maxim > Solutions > PDAs and Handheld Equipment

LED Backlighting and LCD Bias

DATA SHEETS
Display Title / Parts Key Advantages
QV  PDF Evaluation Kit for the MAX8678
MAX8678EVKIT

QV  PDF Evaluation Kit for the MAX8822
MAX8822EVKIT

QV  PDF White LED Charge Pump with Mono Class D Audio Amp and Dual LDO
MAX8821

Industry's First LED Charge Pump with Integrated Audio Amplifier and 2 LDOs Providing Space Savings and Highest Efficiency
QV  PDF MAX5128 Evaluation Kit/Evaluation System
MAX5128EVCMAXQU+, MAX5128EVKIT+

QV  PDF Ultra-Efficient Negative Charge-Pump LED Driver with Dual LDOs in 3mm x 3mm Thin QFN
MAX8822

Independent Adaptive Voltage Supply for Four WLEDs with Two 200mA Low-Noise/High PSRR LDOs for Display Backlighting
QV  PDF Highest Efficiency Supply for 2 to 6 Series WLEDs in a 2mm x 2mm TDFN Package
MAX8901, MAX8901A, MAX8901B

Drive a String of 2 to 6 WLEDs for 1.5in to 4in LCD Backlighting Used in Battery Operated Devices
QV  PDF 125mA 1x/1.5x Charge Pumps for 5 White LEDs in 3mm x 3mm TDFN
MAX8630W, MAX8630X

Delivers Thermal Derating, 1% LED Accuracy, and 85% Efficiency in a Tiny 3mm x 3mm TDFN Package and Easy Control Interfacing
QV  PDF White LED Charge Pump with 1.1W Audio Amplifier
MAX8678

Industry’s First LED Charge Pump with Integrated Audio Amplifier Saves 50% PCB Area While Providing Highest Efficiency
QV  PDF Ultra-Efficient Charge Pumps for Six White/RGB LEDs in 3mm x 3mm Thin QFN
MAX8647, MAX8648

Achieves Industry's Highest Efficiency Using the Industry's First Negative Charge Pump Driving Six White/RGB LEDs Independently
QV  PDF 1x/1.5x/2x White LED Charge Pumps with Two LDOs in 4mm x 4mm TQFN
MAX8645X, MAX8645Y

QV  PDF High-Efficiency, 26V Step-Up Converters for Main and Subdisplays Using OLEDs and/or White LEDs
MAX8608Y, MAX8608Z

Boost Converter for Dual-Display Output Utilizing Any Combination of WLED and OLED Displays, Smallest 3mm x 3mm TDFN Package with Only One Inductor and Schottky Diode with More Flexibility in Meeting Customer Application Design Requirements
QV  PDF 1MHz PWM Boost Converter for 1.5A White LED Camera Flash
MAX8607

Highest Current, White LED, Step-Up DC-DC for the Brightest Camera Flash Delivers 1.5A Regulated Current with Up to 84% Efficiency
QV  PDF 128-Tap, Nonvolatile, Linear-Taper Digital Potentiometer in 2mm x 2mm µDFN Package
MAX5128

QV  PDF Light-Management IC with Efficient 1x/1.5x/2x Charge Pump for Backlight/Flash/RGB LEDs
MAX1707

High-Efficiency Backlight and Flash Driver with Up to 400mA Flash Capability and 3 RGB Drivers with a Programmable RGB Ramp for Main, Sub, RGB, Keypad, or Flash Applications in a Compact, 4mm x 4mm TQFN Package
QV  PDF 64-Tap, One-Time Programmable, Linear-Taper Digital Potentiometers
MAX5527, MAX5528, MAX5529

QV  PDF 1x/1.5x/2x White LED Charge Pump with Two LDOs in 4mm x 4mm Thin QFN
MAX8631X, MAX8631Y

QV  PDF 1.2A White LED Regulating Charge Pump for Camera Flashes and Movie Lights
MAX1577Y, MAX1577Z

Highest Current, 1.2A, Charge Pumps Enable Brightest WLED Flashes in Camera Phones, Even with Low-Battery Input Voltage
QV  PDF 5-Output PMICs with DC-DC Core Supply for Low-Cost PDAs
MAX8594

QV  PDF Complete Bias and White LED Power Supplies for Small TFT Displays
MAX1578, MAX1579

First Complete LCD Bias and WLED Backlight Supplies for Small TFT Displays
QV  PDF High-Efficiency, 32V Step-Up Converters with TA Derating Option for 2 to 8 White LEDs
MAX8595Z, MAX8596Z

High-Efficiency, 32V Step-Up Converters with Temperature Derating Option for 2 to 8 White LEDs
QV  PDF High-Efficiency LCD Boost with True Shutdown
MAX8570, MAX8571, MAX8572, MAX8573, MAX8574, MAX8575

First Fully Protected LCD and OLED Supplies in SOT23 Package
QV  PDF 480mA White LED 1x/1.5x/2x Charge Pump for Backlighting and Camera Flash
MAX1576

QV  PDF High-Efficiency, 40V Step-Up Converters for 2 to 10 White LEDs
MAX1553, MAX1554

Smallest, Highest Efficiency, 40V Driver for Up to 10 White LEDs
QV  PDF High-Efficiency Step-Up Current Regulator for LEDs
MAX1698, MAX1698A




Key Specifications:   Digital Potentiometers
Part Number Taper POTs Per Pkg. Control Interface Wiper Memory Number of Steps End-to-End Resistance (kΩ) Res. Tol. (%) Temp. Coeff. (typ)(ppm/°C) Wiper Resistance (typ) (Ω) Max. Idle State Supply Current @5V (µA) Applications Features Supply Voltage (V) Industry Qualified Package Smallest Available Package (max w/pins) (mm2) Operating Temp. Range (°C)
MAX5128  Linear 1 Up/Down Non-Volatile 128 22 25 50 600 1.5
Backlight Adjustment
Bias Adjustment
Fiber Communications
Low Step Size Applications
Portable Consumer
Power Supply Cal.
Precision Voltage Divider
Vcom Adjustment
Custom Programmed Resistance Response
EEPROM Wiper Memory
Low THD+N and Crosstalk
2.7 to 5.5  -  MicroDFN/8 4 -40 to +85
MAX5527  Linear 1 Up/Down Non-Volatile 64 100 25 35 100 1.5  - 
One Time Programmable
2.7 to 5.5  -  THIN QFN (Dual)/8
uMAX/8
16  - 
MAX5528  Linear 1 Up/Down Non-Volatile 64 50 25 35 100 1.5  - 
One Time Programmable
2.7 to 5.5  -  THIN QFN (Dual)/8
uMAX/8
16  - 
MAX5529  Linear 1 Up/Down Non-Volatile 64 10 25 35 100 1.5  - 
One Time Programmable
2.7 to 5.5 Automotive - AECQ100
Automotive - General
THIN QFN (Dual)/8
uMAX/8
16  - 
See All Digital Potentiometers (121)

Key Specifications:   Switch-Mode DC-DC Power Supplies
Part Number Topology VIN (min) (V) VIN (max) (V) Number of DC-DC Outputs Preset VOUT (V) Digital/VID Programmed Output Max. Adjustable VOUT (V) IOUT (A) Operating Current, ICC (max) (mA) Fixed Freq/PWM Operation Internal Power Switch(es) Synchronous Rectifier Package Smallest Available Package (max w/pins) (mm2)
MAX8570  Step-Up 2.7 5.5 1  -  No 28 0.01 0.035 No Yes No SOT-23/6 9
MAX8571  Step-Up 2.7 5.5 1  -  No 28 0.015 0.035 No Yes No SOT-23/6 9
MAX8572  Step-Up 2.7 5.5 1 15 No  -  0.01 0.035 No Yes No SOT-23/6 9
MAX8573  Step-Up 2.7 5.5 1 15 No  -  0.015 0.035 No Yes No SOT-23/6 9
MAX8574  Step-Up 2.7 5.5 1  -  No 28 0.025 0.035 No Yes No SOT-23/6 9
MAX8575  Step-Up 2.7 5.5 1 15 No  -  0.025 0.035 No Yes No SOT-23/6 9
See All Switch-Mode DC-DC Power Supplies (417)

Key Specifications:   White LED Drivers
Part Number Topology Max. No. of LEDs Configuration Dimming Control VDROPOUT (typ) (mV) VCURR_SENSE (mV) POUT (W) IMAX per LED (mA) Min. VIN (V) Max. VIN (V) ICC (max) (mA) Max. VOUT (V) Fixed Freq. Operating Freq. (kHz) Soft Start Internal Power Switch(es) Shutdown Open LED Protection Camera Flash LED Temp. Derating EV-Kit Package Smallest Available Package (max w/pins) (mm2) Operating Temp. Range (°C)
MAX8822  NEW! Charge Pump 4 Parallel Digital 60  -  0.4 24 2.7 5.5 1.4 5.5 Yes 1000 Yes Yes Yes Yes No No Yes THIN QFN/16  -  -40 to +85
MAX8821  Charge Pump 6 Parallel Digital
I2C Serial
72  -  0.6 25 2.7 5.5 0.12 5.5 Yes 1000 No Yes Yes Yes No Yes No THIN QFN/28  -  -40 to +85
MAX8901  Inductor Based 6 Series PWM
Serial Pulse
 -  500 0.6 25 2.6 5.5 0.135 24 Yes 750 Yes Yes Yes Yes No No Yes THIN QFN (Dual)/8  -  -40 to +85
MAX8647  Charge Pump 6 Parallel I2C Serial  -   -  0.6 24 2.7 5.5 0.1 5 Yes 1000 Yes Yes Yes Yes No Yes Yes THIN QFN/16  -  -40 to +85
MAX8648  Charge Pump 6 Parallel Serial Pulse  -   -  0.6 24 2.7 5.5 0.2 5 Yes 1000 Yes Yes Yes Yes No Yes Yes THIN QFN/16  -  -40 to +85
MAX8678  Charge Pump 4 Parallel Serial Pulse  -   -  0.4 244 2.7 5.5 0.2 5 Yes 1000 Yes Yes Yes Yes No No No THIN QFN/16  -  -40 to +85
MAX8607  Inductor Based
Linear Current Regulator
1 Parallel Digital  -   -  6 1500 2.7 5.5 4 5.5 Yes 1000 Yes Yes Yes Yes Yes Yes Yes THIN QFN (Dual)/14  -  -40 to +85
MAX8630  Charge Pump 5 Parallel PWM
Serial Pulse
 -   -  0.5 25 2.7 5.5 1.4 5.5 Yes 1000 Yes Yes Yes Yes No Yes Yes THIN QFN (Dual)/14  -  -40 to +85
MAX8631  Charge Pump 8 Parallel Digital
PWM
Serial Pulse
 -   -  2.25 100 2.7 5.5 6 5 Yes 1000 Yes Yes Yes Yes Yes Yes Yes THIN QFN/28  -  -40 to +85
MAX1577  Charge Pump 40 Parallel Digital  -   -  5 1200 2.7 5.5 5 5.1 Yes 1000 Yes Yes Yes Yes Yes No Yes THIN QFN (Dual)/8  -  -40 to +85
MAX1578  Inductor Based 8 Series Analog
PWM
 -  300 0.9 25 2.7 5.5 5 32 Yes 1000 Yes Yes Yes Yes No No Yes THIN QFN/24  -  -40 to +85
MAX1579  Inductor Based 8 Series Analog
PWM
 -  300 0.9 25 2.7 5.5 5 32 Yes 1000 Yes Yes Yes Yes No Yes Yes THIN QFN/24  -  -40 to +85
MAX1576  Charge Pump 8 Parallel Analog
PWM
Serial Pulse
 -   -  2 400 2.7 5.5 6 5 Yes 1000 Yes Yes Yes Yes Yes No Yes THIN QFN/24  -  -40 to +85
MAX1553  Inductor Based 6 Series Analog
PWM
 -  200 0.5 20 2.7 5.5 0.35 40 No  -  Yes Yes Yes Yes No No Yes THIN QFN (Dual)/8  -  -40 to +85
MAX1554  Inductor Based 10 Series Analog
PWM
 -  200 0.8 20 2.7 5.5 0.65 40 No  -  Yes Yes Yes Yes No No Yes THIN QFN (Dual)/8  -  -40 to +85
MAX1698  Inductor Based 50 Series-Parallel Analog  -  300 5 350 2.7 5.5 0.5 60 No  -  Yes No Yes Yes  -  No Yes uMAX/10 15 -40 to +85
See All White LED Drivers (40)





         



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