Texas Instruments LM3537
The LM3537 is a highly integrated LED driver capable of driving 8 LEDs in parallel for single display backlighting applications. The LM3537 provides multi-zone Ambient Light Sensing allowing autonomous backlight intensity control in the event of changing ambient light conditions.| Part No. | LM3537 |
|---|---|
| Datasheet | LM3537 Download |
| Manufacturer |  Texas Instruments |
| Description | 8-Channel WLED Driver |
| Buy | Stock & Price |
FEATURES
1 2Lighting:● 8-channel Backlight Capability
● Internal ALS Engine; PWM Input to Support CABC
● Built-In Power Supply and Gain Control for Ambient Light Sensor
● Up to 90% Efficiency
● Adaptive Charge Pump with 1x and 1.5x Ggains for Maximum Efficiency
● 128 Dimming Steps for Group A, Exponential or Linear Dimming Selectable by Register Setup
● 8 Linear Dimming States for Group B LDOs:
● 4 Programmable LDOs (300 mA/150 mA Output Currents)
● Default Startup Voltage States
● Low Dropout Voltage: 100 mV typ. at 150 mA Load Current
● LDO Input Voltage = 1.8V to VIN_A
● Overload Protection Combined Common
FEATURES
:● Wide Input Voltage Range: 2.7V to 5.5V
● I2C-Compatible Serial Interface
● 2 General-Purpose Outputs
APPLICATIONS
● Smartphone Lighting● MP3 Players, Gaming Devices
● Digital Cameras
DESCRIPTION
Independent LED control allows for a subset of the main display LEDs to be selected for partial illumination applications. GROUP A Typical Application Circuit VIN = 2.7 to 5.
