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Maxim > Solutions > Digital Cameras (DIGICAMs)

Backlight and LCD Bias Power Supplies

DATA SHEETS
Display Title/Parts Key Advantages
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 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 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 Dual-Output (+ and -) DC-DC Converters for CCD
MAX8614A, MAX8614B

Small, 3mm x 3mm TDFN Package
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 1x/1.5x/2x White LED Charge Pump with Two LDOs in 4mm x 4mm Thin QFN
MAX8631X, MAX8631Y

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 180mA, 1x/2x, White LED Charge Pump in 3mm x 3mm TDFN
MAX1574

White LED Charge Pump in 3mm x 3mm TDFN Achieves 83% Average Efficiency
QV  PDF White LED 1x/1.5x Charge Pump for Main and Sub-Displays
MAX1575

First 85% Efficient, Fractional, White-LED Charge Pump with Dual, Single-Wire Dimming Control for Main and Sub-Displays
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, 26V Step-Up Converters for Two to Six White LEDs
MAX1561, MAX1599

26V, Step-Up DC-DC Powers Up to 6 White LEDs with Up to 87% Efficiency
QV  PDF White LED Step-Up Converter in SOT23
MAX1848

Current Regulated Step-Up Converter Powers White LEDs with Uniform Brightness
QV  PDF 28V Internal Switch LCD Bias Supply with True Shutdown
MAX1606

LCD Bias Supply Uses Internal Switches to Deliver Up to 28V, and True Shutdown
QV  PDF 30V Internal Switch LCD Bias Supply
MAX1605




Key Specifications:  Inverting Switching Regulators
Part Number VIN
(V)
VIN
(V)
Max. IOUT
(A)
Max. IOUT
(A)
Output Adjust. Method DC-DC Outputs Alternate Topology Oper. Freq.
(kHz)
Package/Pins Smallest Available Pckg.
(mm2)
min max max w/pins
MAX8614  2.7 5.5 0.125 0.125 Resistor 2
Inverting
Step-Up
1000
TDFN-EP/14
9.6
See All Inverting Switching Regulators (25)

Key Specifications:  Multifunction PMICs
Part Number Primary Topology Monitor/Control Features DC-DC/Power Features VIN
(V)
VIN
(V)
Max. IOUT
(A)
Max. IOUT
(A)
Oper. Freq.
(kHz)
Package/Pins Smallest Available Pckg.
(mm2)
min max max w/pins
MAX8614 
Inverting
Step-Up
Low Batt./POK Output
Shutdown
Current Limit
Fixed Freq./PWM
Internal Pwr. FETs
Soft Start
2.7 5.5 0.125 0.125 1000
TDFN-EP/14
9.6
See All Multifunction PMICs (83)

Key Specifications:  Step-Up Switching Regulators
Part Number VIN
(V)
VIN
(V)
VOUT
(V)
VOUT
(V)
Preset VOUT
(V)
Max. IOUT
(A)
Max. IOUT
(A)
Output Adjust. Method DC-DC Outputs Oper. Freq.
(kHz)
Package/Pins Smallest Available Pckg.
(mm2)
min max min max max w/pins
MAX8614  2.7 5.5 - - - 0.125 0.125 Resistor 2 1000
TDFN-EP/14
9.6
MAX8570  2.7 2.7 28 - 0.01 0.01 Resistor 1 -
SOT/6
9
MAX8571  2.7 2.7 28 - 0.015 0.015 Resistor 1 -
SOT/6
9
MAX8572  2.7 15 15 15 0.01 0.01 Preset 1 -
SOT/6
9
MAX8573  2.7 15 15 15 0.015 0.015 Preset 1 -
SOT/6
9
MAX8574  2.7 2.7 28 - 0.025 0.025 Resistor 1 -
SOT/6
9
MAX8575  2.7 15 15 15 0.025 0.025 Preset 1 -
SOT/6
9
MAX1605  2.5 2.5 28 - 0.02 0.02 Resistor 1 500
SOT/6
TDFN-EP/6
9
MAX1606  0.8 1.25 28 - 0.02 0.02 Resistor 1 500
µMAX/8
16.2
See All Step-Up Switching Regulators (90)

Key Specifications:  White LED Drivers
Part Number Topology LEDs Config. Dimming Control VDROPOUT
(mV)
VCURR_SENSE
(mV)
POUT
(W)
ILED
(mA)
VIN
(V)
VIN
(V)
ICC
(mA)
VOUT
(V)
Oper. Freq.
(kHz)
Package/Pins
max num. of typ max min max max max
MAX8822  Charge Pump 4 Parallel Digital 60 - 0.4 24 2.7 5.5 1.4 5.5 1000
TQFN/16
MAX8821  Charge Pump 6 Parallel
Digital
I2C Serial
72 - 0.6 25 2.7 0.12 5.5 1000
TQFN/28
MAX8647  Charge Pump 6 Parallel I2C Serial - - 0.6 24 2.7 0.1 5 1000
TQFN/16
MAX8648  Charge Pump 6 Parallel Serial Pulse - - 0.6 24 2.7 0.2 5 1000
TQFN/16
MAX8678  Charge Pump 4 Parallel Serial Pulse - - 0.4 244 2.7 0.2 5 1000
TQFN/16
MAX8645  Charge Pump 8 Parallel
Analog
Digital
PWM
Serial Pulse
40 - 2.8 200 2.7 5.5 5.5 1000
TQFN/28
MAX1707  Charge Pump 11 Parallel
Digital
I2C Serial
40 100 2.5 100 2.7 6.5 5 1000
TQFN/24
MAX8630  Charge Pump 5 Parallel
PWM
Serial Pulse
- - 0.5 25 2.7 1.4 5.5 1000
TDFN-EP/14
MAX8631  Charge Pump 8 Parallel
Digital
PWM
Serial Pulse
- - 2.25 100 2.7 6 5 1000
TQFN/28
MAX1576  Charge Pump 8 Parallel
Analog
PWM
Serial Pulse
- - 2 400 2.7 6 5 1000
TQFN/24
MAX1575  Charge Pump 6 Parallel Serial Pulse - - 0.75 30 2.7 2 5 1000
TQFN/16
MAX1574  Charge Pump 3 Parallel Serial Pulse - - 0.75 60 2.7 2 5 1000
TDFN-EP/10
MAX1561  Inductor Based 6 Series
Analog
PWM
- 100 0.9 20 2.6 0.55 26 1000
TDFN-EP/8
MAX1599  Inductor Based 6 Series
Analog
PWM
- 100 0.9 20 2.6 0.55 26 500
TDFN-EP/8
MAX1553  Inductor Based 6 Series
Analog
PWM
- 200 0.5 20 2.7 0.35 40 -
TDFN-EP/8
MAX1554  Inductor Based 10 Series
Analog
PWM
- 200 0.8 20 2.7 0.65 40 -
TDFN-EP/8
MAX1848  Inductor Based 6 Series Analog - 75 0.8 60 2.6 2 12 1200
SOT/8
TDFN-EP/8
See All White LED Drivers (46)



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