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TI LM3537TME/NOPB product image
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TI LM3537TME/NOPB

Manufacturer
TI
MPN
LM3537TME/NOPB
LCSC Part #
C1880297
Packaging
DSBGA-30
Customer #
Key Attributes
1.3MHz 8 2V~4V 25mA 2.7V~5.5V DSBGA-30 LED Drivers RoHS
DatasheetTI LM3537TME/NOPB
RoHS Compliance1 documents available
Every Order Guarantee
100% Authentic · 30-Day Return or Replacement
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QtyUnit Price(Reference Only)Total Amount
1+$ 3.5927$ 3.59
250+$ 1.3905$ 347.63
500+$ 1.3413$ 670.65
1,000+$ 1.3176$ 1317.60
Standard Packaging250/Full Reel
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Products Specifications

All
TypeDescription
CategoryIntegrated Circuits (ICs)/Power Management (PMIC)/LED Drivers
ManufacturerTI
PackagingDSBGA-30
Frequency - Switching1.3MHz
DimmingPWM;Analog
Voltage - Input(AC)-
Number of Channels8
Type-
Switch tube (built-in/external)-
Output Voltage2V~4V
Operating Temperature-30℃~+85℃
Output Current25mA
FeaturesOver-Temperature Protection (OTP);Short Circuit Protection
TopologyCharge Pump
Constant Current Accuracy7.5%
Voltage - Input(DC)2.7V~5.5V
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Introduction

AI Translation

The LM3537 is a highly integrated LED driver capable of driving 8 LEDs in parallel for single display backlighting applications. Independent LED control allows for a subset of the main display LEDs to be selected for partial illumination applications. I2C-compatible control allows full configurability of the backlighting function. The LM3537 provides multi-zone Ambient Light Sensing allowing autonomous backlight intensity control in the event of changing ambient light conditions. A PWM input is also provided to give the user a means to adjust the backlight intensity dynamically based upon the content of the display. Four integrated LDOs are fully configurable through I2C, capable of addressing point-of-load regulation needs for functions such as integrated camera modules. The LDOs can be powered from main battery source, or by a fixed output voltage of an external buck converter (post regulation) leading to higher conversion efficiency. The LM3537 provides excellent efficiency without the use of an inductor by operating the charge pump in a gain of 3/2 or in Pass Mode. The proper gain for maintaining current regulation is chosen, based on LED forward voltage, so that efficiency is maximized over the input voltage range. LM3537 is offered in a tiny 30-bump DSBGA package.

Features

AI Translation
  • Lighting:
    • 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 Gains 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
  • Combined Common Features:
    • Wide Input Voltage Range: 2.7V to 5.5V
    • I2C-Compatible Serial Interface
    • 2 General-Purpose Outputs

Applications

AI Translation
  • Smartphone Lighting
  • MP3 Players, Gaming Devices
  • Digital Cameras