MAX20070EVKIT# by Analog Devices

Integrated TFT Power Supply and LED Backlight Drivers

Status: Active
Series: MAX20070, MAX20070B
RoHS: Unknown
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The MAX20070/MAX20070B are highly integrated power supplies and LED backlight drivers for automotive TFT-LCD applications. The devices integrate one buck-boost converter, one boost converter, two gate-driver supplies, and a boost/SEPIC converter that can power one to two strings of LEDs in the display backlight. The source-driver power supplies consist of a boost converter and an inverting buck-boost converter that can generate voltages up to +15V and -15V. Both source-driver power supplies can deliver up to 100mA. The positive source-driver supply regulation voltage (VPOS) is set by connecting an external resistor-divider on FBP. Connecting the FBP pin to ground sets the regulation voltage (VPOS) to +6.5V. The negative source-driver supply voltage (VNEG) is always tightly regulated to -VPOS within ±50mV. The source-driver supplies use an input voltage from 2.7V to 5.5V to generate the output voltages. The gate-driver power supplies consist of regulated charge pumps that generate up to +22V and -22V and can deliver up to 3mA each. The regulation voltage (VGVDD) on the positive charge pump is set by a resistor-divider on FBPG; the regulation voltage (VGVEE) on the negative charge pump is set by a resistor-divider on FBNG. The ICs feature a dual-string LED driver that operates off a separate input voltage (VBATT) and can power up to two strings of LEDs with 160mA (max) of current per string. The startup and shutdown sequences for all power domains is controlled using one of the seven preset modes that are selectable through a resistor on SEQ. The MAX20070/MAX20070B are available in a 32-pin, 5mm × 5mm TQFN package with an exposed pad, and operates over the -40°C to +105°C ambient temperature range.

Prices starting from US$19.37


Distributor Starting From Stock
Logo for element14 element14 US$66.33
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Logo for Newark Electronics Newark Electronics US$19.37
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Features

Integrates Both TFT Power Supplies and LED Backlight Driver in One IC, Reducing Component Count
Alleviates EMI Due to Spread Spectrum on Both Source Driver Supplies and LED Driver
10000:1 Dimming Ratio at 200Hz Dimming Frequency
Available in a 32-Pin (5mm × 5mm) TQFN with an Exposed Pad for Heat Dissipation and Operates Over the -40°C to +105°C Ambient Temperature Range

Specifications

VIN (V) (min) 2.7
VIN (V) (max) 5.5
Max. No. of LEDs 24
# LED Channels 2
Regulation Topology Inductor Based
LED Configuration Series-Parallel
ILED per Channel (A) (max) 0.16
PWM Dimming Freq. (kHz) (max) 20
Dimming Ratio (max) 10000
Dimming Control PWM
POUT (W) 12
ICC (mA) (max) 2.2
LED String Volt. (V) (max) 52
Switching Frequency (kHz) 1000
Package/Pins TQFN/32
BudgetaryPrice (See Notes) 5.69


MAX20070EVKIT# Lighting & LED Development Kits by Analog Devices

EVAL KIT, TFT & LED BACKLIGHT DRIVER

Status: Unknown
Series: -
RoHS: Compliant
View Datasheet Manufacturer Site View Pricing & Stock

Specifications

Device Topology Boost (Step Up)
No. of Outputs 2Outputs
Output Current 160mA
Output Voltage 40V
Input Voltage Min 2.7V
Input Voltage Max 5.5V
Core Chip MAX20070, MAX20070B
RoHS Compliant Yes

Alternative Descriptions

Eval Kit, Tft & Led Backlight Driver | Newark Electronics

Frequently Asked Questions

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Is the MAX20070EVKIT# RoHS compliant?

This part has not been flagged as RoHS Compliant.

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Authorised distributors including element14, Farnell and Newark Electronics have stock available or on a lead time for MAX20070EVKIT# .

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