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LM2795TLX from NS,National Semiconductor

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LM2795TLX

Manufacturer: NS, NATIONAL, NS/PBF

Current Regulated Switched Capacitor LED Supply with Analog and PWM Brightness Control

Partnumber Manufacturer Quantity Availability
LM2795TLX NS, NATIONAL, NS/PBF 9830 In Stock

Description and Introduction

Current Regulated Switched Capacitor LED Supply with Analog and PWM Brightness Control The LM2795TLX/NOPB is a charge pump-based white LED driver manufactured by Texas Instruments (formerly National Semiconductor). Here are its specifications, descriptions, and features:

### **Specifications:**
- **Manufacturer:** Texas Instruments (formerly National Semiconductor)  
- **Part Number:** LM2795TLX/NOPB  
- **Type:** White LED Driver  
- **Topology:** Charge Pump (1x/1.5x/2x)  
- **Input Voltage Range:** 2.7V to 5.5V  
- **Output Current:** Up to 30mA per LED (adjustable)  
- **Number of Outputs:** 3  
- **Efficiency:** Up to 90%  
- **Switching Frequency:** 1MHz (typical)  
- **Dimming Control:** PWM (Pulse-Width Modulation)  
- **Package:** 10-Pin LLP (3mm x 3mm)  
- **Operating Temperature Range:** -40°C to +85°C  

### **Descriptions:**
The LM2795TLX/NOPB is a compact, high-efficiency LED driver designed for powering white LEDs in portable applications. It uses a charge pump architecture to regulate current, ensuring uniform brightness across multiple LEDs. The device supports PWM dimming for brightness control and operates efficiently across a wide input voltage range.

### **Features:**
- **Integrated Charge Pump:** Supports 1x, 1.5x, and 2x modes for optimal efficiency.  
- **Adjustable LED Current:** Up to 30mA per LED with external resistor setting.  
- **Low Dropout Operation:** Maintains regulation even at low input voltages.  
- **PWM Dimming:** Allows precise brightness control.  
- **Automatic Mode Switching:** Dynamically adjusts charge pump mode for efficiency.  
- **Thermal Protection:** Prevents overheating.  
- **Small Footprint:** 10-pin LLP package (3mm x 3mm) for space-constrained designs.  
- **Low Quiescent Current:** Minimizes power consumption in standby.  

This information is based solely on the manufacturer's datasheet and product documentation.

Application Scenarios & Design Considerations

Current Regulated Switched Capacitor LED Supply with Analog and PWM Brightness Control

Alternative Part Number

  • TPS61160DRVR --: Single-channel white LED boost driver in a small WSON package, functionally similar to the LM2795 charge-pump LED driver and widely available.
  • CAT3649HV4-T2 --: Quad-mode charge pump LED driver with similar current-source outputs and dimming control, suitable as a drop-in functional replacement.
  • MAX1574ETB+T --: Charge-pump white LED driver with comparable output current and small TDFN package, offering an alternative source for the same application.
  • MAX8822ETE+ --: Charge-pump white LED driver with comparable output current and I2C dimming, offering a different series and vendor for second sourcing.
  • TPS61165DRVR --: Single-channel boost LED driver in a small WSON package, functionally similar to the LM2795 charge-pump LED driver and widely available.

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