TPS61183 Series
WLED driver for notebooks with PWM interface and programmable PWM dimming
Manufacturer: Texas Instruments
Catalog(2 parts)
| Part | Internal Switch(s)▲▼ | Voltage - Output▲▼ | Type | Current - Output / Channel▲▼ | Number of Outputs▲▼ | Dimming | Supplier Device Package | Voltage - Supply (Max)▲▼ | Voltage - Supply (Min)▲▼ | Applications | Mounting Type | Operating Temperature▲▼ | Operating Temperature▲▼ | Frequency▲▼ | Frequency▲▼ | Package / Case | Topology | Outputs and Type | Outputs and Type▲▼ | Supplied Contents | Utilized IC / Part |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Texas Instruments TPS61183RTJRLED Driver IC 6 Output DC DC Regulator Step-Up (Boost) PWM Dimming 30mA 20-QFN (4x4) | 38 V | DC DC Regulator | 0.029999999329447743 A | 6 ul | PWM | 20-QFN (4x4) | 24 V | 4.5 V | Backlight | Surface Mount | 85 °C | -40 °C | 1000000 Hz | 300000 Hz | 20-WFQFN Exposed Pad | Step-Up (Boost) | |||||
38 V | 0.119999997317791 A | Non-Isolated | 6 ul | Board(s) | TPS61183 |
Key Features
• 4.5-V to 24-V Input Voltage38-V Maximum Output VoltageIntegrated 2-A, 40-V MOSFET280-kHz to 1-MHz Programmable Switching FrequencyAdaptive Boost Output to WLED VoltagesWide PWM Dimming Frequency Range100 Hz to 50 KHz for Direct PWM Mode100 Hz to 22 KHz for Frequency Programmable Mode100:1 Dimming Ratio at 20 kHz10000:1 Dimming Ratio at 200 Hz (Direct PWM mode)Small External ComponentsIntegrated Loop CompensationSix Current Sinks of 30 mA, Maximum1.5% (Typical) Current MatchingPWM Brightness Interface ControlPWM Programmable Mode Brightness Dimming Method or Direct PWM Dimming Method4000-V HBM ESD ProtectionProgrammable Overvoltage ThresholdBuilt-in WLED Open and Short ProtectionsThermal Shutdown4.5-V to 24-V Input Voltage38-V Maximum Output VoltageIntegrated 2-A, 40-V MOSFET280-kHz to 1-MHz Programmable Switching FrequencyAdaptive Boost Output to WLED VoltagesWide PWM Dimming Frequency Range100 Hz to 50 KHz for Direct PWM Mode100 Hz to 22 KHz for Frequency Programmable Mode100:1 Dimming Ratio at 20 kHz10000:1 Dimming Ratio at 200 Hz (Direct PWM mode)Small External ComponentsIntegrated Loop CompensationSix Current Sinks of 30 mA, Maximum1.5% (Typical) Current MatchingPWM Brightness Interface ControlPWM Programmable Mode Brightness Dimming Method or Direct PWM Dimming Method4000-V HBM ESD ProtectionProgrammable Overvoltage ThresholdBuilt-in WLED Open and Short ProtectionsThermal Shutdown
Description
AI
The TPS61183 device provides a highly integrated white-LED (WLED) driver solution for notebook LCD backlights. This device has a built-in high-efficiency boost regulator with integrated 2-A, 40-V power MOSFET. The six current sink regulators provide high-precision current regulation and matching. The device can support a total of up to 60 WLEDs. In addition, the boost output automatically adjusts its voltage to the WLED forward voltage to optimize efficiency.
The TPS61183 supports the programmable brightness dimming method. In this configuration, the dimming duty cycle of the WLED current is controlled by the input PWM signal but the dimming frequency is fixed and set by an external resistor. During direct PWM dimming, the WLED current completely synchronized with the input PWM signal's duty cycle and frequency.
The TPS61183 device provides a highly integrated white-LED (WLED) driver solution for notebook LCD backlights. This device has a built-in high-efficiency boost regulator with integrated 2-A, 40-V power MOSFET. The six current sink regulators provide high-precision current regulation and matching. The device can support a total of up to 60 WLEDs. In addition, the boost output automatically adjusts its voltage to the WLED forward voltage to optimize efficiency.
The TPS61183 supports the programmable brightness dimming method. In this configuration, the dimming duty cycle of the WLED current is controlled by the input PWM signal but the dimming frequency is fixed and set by an external resistor. During direct PWM dimming, the WLED current completely synchronized with the input PWM signal's duty cycle and frequency.