Overview
The LM3630ATMX, produced by Texas Instruments, is a high-efficiency dual-string white LED driver. This device is designed to drive up to two strings of 10 series LEDs each, making it suitable for various LED lighting applications. It operates over a wide input voltage range of 2.3 V to 5.5 V and can adjust the LED current from 5 mA to 28.5 mA. The LM3630ATMX features an I2C-compatible interface for programming and brightness control, allowing for both exponential and linear dimming.
Key Specifications
| Parameter | Min | Max | Unit | |
|---|---|---|---|---|
| Input Voltage (VIN) | 2.3 | 5.5 | V | |
| Operating Ambient Temperature (TA) | -40 | 85 | °C | |
| LED Current (ILED1, ILED2) | 5 | 28.5 | mA | |
| Boost Switching Frequency | 500 | 1000 | kHz | |
| Overvoltage Protection (OVP) | 16 | 40 | V | |
| Efficiency | Up to 87% | % | ||
| Package Type | 12-Pin DSBGA |
Key Features
- Drives up to 2 strings of 10 series LEDs each
- Wide 2.3-V to 5.5-V input voltage range
- I2C-compatible interface for programming and brightness control
- 8-bit 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 control
- Programmable overvoltage protection (16 V, 24 V, 32 V, 40 V)
- Low profile 12-pin DSBGA package
Applications
The LM3630ATMX is suitable for a variety of LED lighting applications, including:
- Smartphones and mobile devices
- Tablets and e-readers
- Laptops and notebooks
- Automotive lighting systems
- General LED lighting solutions requiring high efficiency and programmable brightness control
Q & A
- What is the input voltage range of the LM3630ATMX?
The input voltage range is from 2.3 V to 5.5 V.
- How many LEDs can the LM3630ATMX drive?
The device can drive up to two strings of 10 series LEDs each.
- What is the maximum LED current adjustable range?
The LED current is adjustable from 5 mA to 28.5 mA.
- Does the LM3630ATMX support PWM brightness control?
- What is the package type of the LM3630ATMX?
The device comes in a 12-pin DSBGA package.
- What is the operating ambient temperature range of the LM3630ATMX?
The operating ambient temperature range is from -40°C to +85°C.
- Does the LM3630ATMX have overvoltage protection?
- How does the LM3630ATMX control brightness?
The device controls brightness through an I2C-compatible interface with 8-bit programmable exponential or linear brightness control.
- What is the efficiency of the LM3630ATMX?
The device has an efficiency of up to 87%.
- Does the LM3630ATMX have independent current control per string?
