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Part Number: MAX1599
Description: The MAX1561/MAX1599 step-up converters drive up to six white LEDs with a constant current to provide b...
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MAX1599
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DataSheet
General Description
MAX1599 General Description
The MAX1561/MAX1599 step-up converters drive up to six white LEDs with a constant current to provide backlight in cell phones, PDAs, and other hand-held devices. The step-up converter topology allows series connection of the white LEDs so the LED currents are identical for uniform brightness. This configuration eliminates the need for ballast resistors and expensive factory calibration.
The MAX1561/MAX1599 include an internal, high-voltage, low-RDS(ON) N-channel MOSFET switch for high efficiency and maximum battery life. A single Dual Mode™ input provides a simple means of brightness adjustment and on/off control. Fast 1MHz (500kHz for the MAX1599) current-mode, pulse-width modulated (PWM) operation allows for small input and output capacitors and a small inductor while minimizing ripple on the input supply/battery. Programmable soft-start eliminates inrush current during startup.
Both devices are available in a space-saving, 8-pin 3mm x 3mm thin DFN package with exposed paddle (EP).
MAX1599 Maximum Ratings
IN to GND................................................................-0.3V to +6V
PGND to GND .......................................................-0.3V to +0.3V
LX, OUT to GND.....................................................-0.3V to +30V
CTRL to GND...................-0.3V to the lower of +6V or (VIN + 2V)
COMP, CS to GND..........................................-0.3 to (VIN + 0.3V)
ILX...........................................................................................1A
Continuous Power Dissipation (TA = +70°C)
3mm x 3mm 8-Pin TDFN
(derate 24.4mW/°C above +70°C) .............................1950mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range ............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
PGND to GND .......................................................-0.3V to +0.3V
LX, OUT to GND.....................................................-0.3V to +30V
CTRL to GND...................-0.3V to the lower of +6V or (VIN + 2V)
COMP, CS to GND..........................................-0.3 to (VIN + 0.3V)
ILX...........................................................................................1A
Continuous Power Dissipation (TA = +70°C)
3mm x 3mm 8-Pin TDFN
(derate 24.4mW/°C above +70°C) .............................1950mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range ............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
MAX1599 Features
Accurate Current Regulation for Uniform Illumination
High Efficiency Up to 87%
Flexible Analog or PWM Dimming Control
Up to 900mW Output Power with Internal 30V MOSFET Switch
Fast 1MHz (MAX1561) or 500kHz (MAX1599) PWM Operation
Small, Low-Profile External Components
2.6V to 5.5V Input Range
26V (max) Output with Overvoltage Protection
Optimized for Low 15mVP-P Input Ripple
Soft-Start with Zero Inrush Current
0.3µA Shutdown Current
Tiny 8-Pin 3mm x 3mm Thin DFN Package
High Efficiency Up to 87%
Flexible Analog or PWM Dimming Control
Up to 900mW Output Power with Internal 30V MOSFET Switch
Fast 1MHz (MAX1561) or 500kHz (MAX1599) PWM Operation
Small, Low-Profile External Components
2.6V to 5.5V Input Range
26V (max) Output with Overvoltage Protection
Optimized for Low 15mVP-P Input Ripple
Soft-Start with Zero Inrush Current
0.3µA Shutdown Current
Tiny 8-Pin 3mm x 3mm Thin DFN Package
MAX1599 Typical Application
Cell Phones and Smart Phones
PDAs, Palmtops, and Wireless Handhelds
e-Books and Subnotebooks
White LED Display Backlighting
PDAs, Palmtops, and Wireless Handhelds
e-Books and Subnotebooks
White LED Display Backlighting
MAX1599 Connection Diagram
MAX1599
PDF/DataSheet Download
- Datasheet: MAX1599
- File Size: 211796 KB
- Manufacturer: MAXIM [Maxim Integrated Products]
- Click here to Download
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MAX1599 Relative Products
MAX1598EZK50+T
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MAX1598EZK36+T
IC LDO REG 200MA 3.6V SOT23-5
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MAX1598EZK33+T
IC LDO REG 200MA 3.3V SOT23-5
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MAX1598EZK32+T
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MAX1598EZK29+T
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