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LED Driver IC 2 Output DC DC Regulator Step-Up (Boost) PWM Dimming 28.5mA 12-DSBGA (1.64x1.24)

LM3630ATMX General Description

To optimize performance, the boost switching frequency of the LM3630ATMX is programmable at either 500 kHz for low switching loss or 1 MHz for the use of small, low-profile inductors. Users can also set a 10% offset for these frequencies. Additionally, the device offers programmable overvoltage protection at 16 V, 24 V, 32 V, or 40 V to accommodate various LED configurations and diode/capacitor combinations

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Key Features

  • Drives up to 2 Strings of 10 Series LEDs
  • Wide 2.3-V to 5.5-V Input Voltage Range
  • Up to 87% Efficient
  • 8-bit I2C-Compatible Programmable Exponential or Linear Brightness Control
  • PWM Brightness Control for CABC Operation
  • Independent Current Control per String
  • True Shutdown Isolation for LEDs
  • Internal Soft-Start Limits Inrush Current
  • Adaptive Headroom
  • Programmable 16-V/24-V/32-V/40-V Overvoltage Protection
  • Selectable Boost Frequency of 500 kHz or 1 MHz with Optionally Additional Offset
  • Low Profile 12-Pin DSBGA Package
  • Solution Size 32 mm²
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TI Inventory


Number of channels 2 Vin (min) (V) 2.3
Vin (max) (V) 5.5 Vout (min) (V) 12
Vout (max) (V) 40 Type Inductive
Switching frequency (max) (kHz) 1120 Duty cycle (max) (%) 94
LED current per channel (mA) 28.5 Peak efficiency (%) 87
Topology Boost Features I2C control, OVP, PWM control, Soft Start, Thermal shutdown
Operating temperature range (°C) -40 to 85 Rating Catalog

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