TPS61180RTET
Active1.5A WHITE LED DRIVER FOR NOTEBOOKS WITH EXTERNAL 3.3V IC SUPPLY
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TPS61180RTET
Active1.5A WHITE LED DRIVER FOR NOTEBOOKS WITH EXTERNAL 3.3V IC SUPPLY
Technical Specifications
Parameters and characteristics for this part
| Specification | TPS61180RTET |
|---|---|
| Applications | Backlight |
| Current - Output / Channel [custom] | 25 mA |
| Dimming | PWM |
| Frequency | 1 MHz |
| Internal Switch(s) | True |
| Mounting Type | Surface Mount |
| Number of Outputs | 6 |
| Operating Temperature [Max] | 85 °C |
| Operating Temperature [Min] | -40 °C |
| Package / Case | 16-WFQFN Exposed Pad |
| Supplier Device Package | 16-WQFN (3x3) |
| Topology | Step-Up (Boost) |
| Type | DC DC Regulator |
| Voltage - Output | 38 V |
| Voltage - Supply (Max) [Max] | 24 V |
| Voltage - Supply (Min) [Min] | 5 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Arrow | N/A | 250 | $ 1.64 | |
| 500 | $ 1.56 | |||
| Digikey | Cut Tape (CT) | 1 | $ 2.64 | |
| 10 | $ 2.37 | |||
| 25 | $ 2.24 | |||
| 100 | $ 1.91 | |||
| Digi-Reel® | 1 | $ 2.64 | ||
| 10 | $ 2.37 | |||
| 25 | $ 2.24 | |||
| 100 | $ 1.91 | |||
| Tape & Reel (TR) | 250 | $ 1.79 | ||
| 500 | $ 1.57 | |||
| 1250 | $ 1.30 | |||
| 2500 | $ 1.21 | |||
| 6250 | $ 1.16 | |||
| Texas Instruments | SMALL T&R | 1 | $ 1.99 | |
| 100 | $ 1.64 | |||
| 250 | $ 1.18 | |||
| 1000 | $ 0.89 | |||
Description
General part information
TPS61180 Series
The TPS61180/1/2 ICs provide highly integrated solutions for media size LCD backlight. These devices have a built-in high efficiency boost regulator with integrated 1.5A/40V power MOSFET. The six current sink regulators provide high precision current regulation and matching. In total, the device can support up to 60 WLED. In addition, the boost output automatically adjusts its voltage to the WLED forward voltage to improve efficiency.
The devices support pulse width modulation (PWM) brightness dimming. During dimming, the WLED current is turned on/off at the duty cycle and frequency determined by the PWM signal input on the DCRTL pin. One potential issue of PWM dimming is audible noises from the output ceramic capacitors. The TPS61180/1/2 family is designed to minimize this output AC ripple across a wide dimming duty cycle and frequency range; therefore, reducing the audible noise.
The TPS61180/1/2 ICs provide a driver output for an external PFET connected between the input and inductor. During short circuit or over-current conditions, the ICs turn off the external PFET and disconnect the battery from the WLEDs. The PFET is also turned off during IC shutdown (true shutdown) to prevent any leakage current of the battery. The device also integrates over-voltage protection, soft-start and thermal shutdown.
Documents
Technical documentation and resources