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TPS61166

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TPS61166

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Produktdetails

Number of channels 1 Vin (min) (V) 2.5 Vin (max) (V) 10 Vout (min) (V) 2.5 Vout (max) (V) 17 Type Inductive Switching frequency (max) (kHz) 1400 Duty cycle (max) (%) 93 LED current per channel (mA) 400 Peak efficiency (%) 85 Topology Boost Features EasyScale 1-Wire Interface, OVP Operating temperature range (°C) -40 to 85 Rating Catalog
Number of channels 1 Vin (min) (V) 2.5 Vin (max) (V) 10 Vout (min) (V) 2.5 Vout (max) (V) 17 Type Inductive Switching frequency (max) (kHz) 1400 Duty cycle (max) (%) 93 LED current per channel (mA) 400 Peak efficiency (%) 85 Topology Boost Features EasyScale 1-Wire Interface, OVP Operating temperature range (°C) -40 to 85 Rating Catalog
WSON (DSK) 10 6.25 mm² (2.5 mm × 2.5 mm)
  • IC Supply Range: 2.5-V to 6-V
  • Power Stage Input Range: 4.5-V to 10-V
  • Integrated 1.1-A / 20-V Internal Switch FET and Power Diode
  • Drive up to 5 LEDs in Series
  • Fast on/off LED Current Within 1-µs in Brightness Dimming
  • Burst PWM Dimming Method With Frequency Range From 60-Hz to 40-kHz
  • Built-in Soft Start-up
  • Over Load Protection
  • Over Voltage Protection
  • 2.5 × 2.5 × 0.8 mm SON Package
  • APPLICATIONS
    • Small Form Factor LCD Backlight
    • Mobile Phone
    • Digital Camera
    • Personal Camcorder
    • Single Lens Reflex
  • IC Supply Range: 2.5-V to 6-V
  • Power Stage Input Range: 4.5-V to 10-V
  • Integrated 1.1-A / 20-V Internal Switch FET and Power Diode
  • Drive up to 5 LEDs in Series
  • Fast on/off LED Current Within 1-µs in Brightness Dimming
  • Burst PWM Dimming Method With Frequency Range From 60-Hz to 40-kHz
  • Built-in Soft Start-up
  • Over Load Protection
  • Over Voltage Protection
  • 2.5 × 2.5 × 0.8 mm SON Package
  • APPLICATIONS
    • Small Form Factor LCD Backlight
    • Mobile Phone
    • Digital Camera
    • Personal Camcorder
    • Single Lens Reflex

The TPS61166 is a boost converter with a 20-V rated integrated switch FET and power diode that drives up to 5 LEDs in series. This device integrates a high side switch FET that can turn on/off the LED current within 1-µs of the applied external PWM signal. The high side switch also provides input-to-output isolation during IC shutdown.

The default white LED current is set with the external sensor resistor R1, and the feedback voltage is regulated to 200-mV, as shown in the typical application circuit. The LED current can be adjusted using a pulse width modulation (PWM) signal through the PWM pin. The LED current is synchronized to the PWM signal. The device does not discharge the output ceramic capacitor during dimming, thus reducing audible noise when dimming.

Separating the IC input (VIN pin) and power stage input (VBAT pin) makes the device flexible enough to support single- or two-cell Li-ion battery applications. Other protection features include 1.1-A peak-to-peak over current protection (OCP), over voltage protection (OVP), over load protection (OLP), and thermal shutdown. The TPS61166 is available in a 2.5 mm × 2.5 mm SON package with thermal pad.

The TPS61166 is a boost converter with a 20-V rated integrated switch FET and power diode that drives up to 5 LEDs in series. This device integrates a high side switch FET that can turn on/off the LED current within 1-µs of the applied external PWM signal. The high side switch also provides input-to-output isolation during IC shutdown.

The default white LED current is set with the external sensor resistor R1, and the feedback voltage is regulated to 200-mV, as shown in the typical application circuit. The LED current can be adjusted using a pulse width modulation (PWM) signal through the PWM pin. The LED current is synchronized to the PWM signal. The device does not discharge the output ceramic capacitor during dimming, thus reducing audible noise when dimming.

Separating the IC input (VIN pin) and power stage input (VBAT pin) makes the device flexible enough to support single- or two-cell Li-ion battery applications. Other protection features include 1.1-A peak-to-peak over current protection (OCP), over voltage protection (OVP), over load protection (OLP), and thermal shutdown. The TPS61166 is available in a 2.5 mm × 2.5 mm SON package with thermal pad.

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Technische Dokumentation

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Top-Dokumentation Typ Titel Format-Optionen Neueste englische Version herunterladen Datum
* Datenblatt White LED Driver With Integrated Power Diode and Fast Burst Mode Dimming datasheet 16.09.2009
Whitepaper Common LED Functions and LED Driver Design Considerations 21.09.2020
Anwendungshinweis Performing Accurate PFM Mode Efficiency Measurements (Rev. A) 11.12.2018
Auswahlhilfe Power Management Guide 2018 (Rev. R) 25.06.2018
Anwendungshinweis How to Use Analog Dimming With TPS6116x 05.08.2011

Design und Entwicklung

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Berechnungstool

SLVC366 — Design Tool for Analog Dimming Using a PWM Signal

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