MAX20070BGTJA/V+ by Analog Devices

Integrated TFT Power Supply and LED Backlight Drivers

Status: Active
Series: 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.

Where to Buy

Prices starting from US$10.66

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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) 2100
Package/Pins TQFN/32
BudgetaryPrice (See Notes) 5.69

Last 6 months Inventory & Pricing History



MAX20070BGTJA/V+ LED Driver ICs by Analog Devices

LED DRIVER, BOOST/BUCK-BOOST/SEPIC, 2MHZ

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

Specifications

Device Topology Boost, Buck-Boost, SEPIC
Input Voltage Min 2.7V
Input Voltage Max 5.5V
Output Voltage Max 15V
Output Current Max 100mA
Switching Frequency 2MHz
No. of Outputs 2Outputs
RoHS Compliant Yes

Last 6 months Inventory & Pricing History


Alternative Descriptions

Led Driver, Boost/Buck-Boost/Sepic, 2Mhz | Newark Electronics

Frequently Asked Questions

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This part has not been flagged as RoHS Compliant.

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