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LM3532TME-40A/NOPB

LED Driver 30 Segment 16-Pin DSBGA T/R

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LM3532TME-40A/NOPB General Description

The LM3532 is a 500-kHz fixed frequency asynchronous boost converter which provides the power for 3 high-voltage, low-side current sinks. The device is programmable over an I2C-compatible interface and has independent current control for all three channels. The adaptive current regulation method allows for different LED currents in each current sink thus allowing for a wide variety of backlight and keypad applications.

The main features of the LM3532 include dual ambient light sensor inputs each with 32 internal voltage setting resistors, 8-bit logarithmic and linear brightness control, dual external PWM brightness control inputs, and up to 1000:1 dimming ratio with programmable fade in and fade out settings.

The LM3532 is available in a 16-pin, 0.4-mm pitch thin DSBGA package. The device operates over a 2.7-V to 5.5-V input voltage range and the ?40°C to +85°C temperature range.

Texas Instruments, Inc Inventory

Key Features

  • Drives up to 3 Parallel High-Voltage LED Strings
    at 40 V Each With up to 90% Efficiency
  • 0.4% Typical Current Matching Between Strings
  • 256 Level Logarithmic and Linear Brightness
    Control With 14-Bit Equivalent Dimming
  • I2C-Compatible Interface
  • Direct Read Back of Ambient Light Sensor Via
    8-bit ADC
  • Programmable Dual Ambient Light Sensor Inputs
    With Internal Sensor Gain Selection
  • Dual External PWM Inputs for LED Brightness
    Adjustment
  • Independent Current String Brightness Control
  • Programmable LED Current Ramp Rates
  • 40-V Overvoltage Protection
  • 1-A Typical Current Limit
Texas Instruments, Inc Original Stock
Texas Instruments, Inc Inventory

Specifications

Category Integrated Circuits (ICs)Power Management (PMIC)LED Drivers Mfr Texas Instruments
Series - Package Tape & Reel (TR)Cut Tape (CT)Digi-Reel®
Product Status Active Type DC DC Regulator
Topology Step-Up (Boost) Internal Switch(s) Yes
Number of Outputs 3 Voltage - Supply (Min) 2.7V
Voltage - Supply (Max) 5.5V Voltage - Output 40V
Current - Output / Channel 30mA Frequency 500kHz
Dimming PWM Applications Backlight
Operating Temperature -40°C ~ 125°C (TJ) Mounting Type Surface Mount
Package / Case 16-WFBGA, DSBGA Supplier Device Package 16-DSBGA
Base Product Number LM3532

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