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LM2796TLX/NOPB from NS,National Semiconductor

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LM2796TLX/NOPB

Manufacturer: NS, NSC

Dual-Display White LED Driver with 3/2x Switched Capacitor Boost 18-DSBGA -30 to 85

Partnumber Manufacturer Quantity Availability
LM2796TLX/NOPB,LM2796TLXNOPB NS, NSC 250098 In Stock

Description and Introduction

Dual-Display White LED Driver with 3/2x Switched Capacitor Boost 18-DSBGA -30 to 85 The LM2796TLX/NOPB is a dual white LED charge pump with an integrated 1x/1.5x/2x charge pump and two independent current-regulated outputs. It is manufactured by Texas Instruments (formerly National Semiconductor, NS).  

### **Specifications:**  
- **Input Voltage Range:** 2.7V to 5.5V  
- **Output Current:** Up to 32mA per channel (adjustable)  
- **Efficiency:** Up to 90%  
- **Switching Frequency:** 1MHz (typical)  
- **Charge Pump Modes:** 1x, 1.5x, 2x (automatic mode switching)  
- **Current Matching:** ±0.5% (typical) between channels  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 10-pin LLP (3mm x 3mm)  

### **Descriptions:**  
The LM2796TLX/NOPB is designed to drive two white LEDs with high efficiency and precise current matching. It features an automatic charge pump mode selection to optimize efficiency based on input voltage and LED forward voltage.  

### **Features:**  
- Dual regulated current sinks for LED control  
- Automatic mode switching for optimal efficiency  
- Low dropout operation  
- No inductors required  
- Low quiescent current (1.5mA typical)  
- Soft-start to limit inrush current  
- Thermal shutdown protection  

This device is commonly used in backlighting applications for small LCD displays in portable electronics.

Application Scenarios & Design Considerations

Dual-Display White LED Driver with 3/2x Switched Capacitor Boost 18-DSBGA -30 to 85

Alternative Part Number

  • TPS61165DRVR --: Single-channel WLED boost driver in a small WSON package, functionally similar LED backlight driver with integrated switch, suitable replacement after TI acquired National Semiconductor.
  • AP3031KTR-G1 --: White LED boost converter with internal switch and PWM dimming, comparable drive capability and small package, good alternative for backlight applications.
  • LT1937ES5#TRPBF --: Step-up white LED driver in SOT-23 with similar current regulation and dimming control, widely used as a drop-in style alternative for small LCD backlight supplies.
  • TPS61160DRVR --: Single-channel WLED boost driver in a small WSON package, functionally similar LED backlight driver from TI (which absorbed National Semiconductor), easy drop-in for many LM2796 backlight designs.
  • MAX16819ATT+T --: High-brightness LED driver with integrated switch in a tiny TDFN package, comparable current capability and dimming control, suitable alternative when the LM2796 is unavailable.

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