TPS61165

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LED-Treiber für helles, weißes Licht in einem 2 mm x 2 mm QFN-Gehäuse

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Datenblatt

document-pdfAcrobat TPS61165 High-Brightness, White LED Driver in WSON and SOT-23 Packages datasheet (Rev. E) (Englisch) PDF | HTML

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TPS61165

AKTIV

Datenblatt

Jetzt bestellen

Produktdetails

Number of channels

1

Vin (min) (V)

3

Vin (max) (V)

18

Vout (min) (V)

3

Vout (max) (V)

38

Type

Inductive

Switching frequency (max) (kHz)

1200

Duty cycle (max) (%)

93

LED current per channel (mA)

400

Peak efficiency (%)

90

Topology

Boost

Features

EasyScale 1-Wire Interface, Load Disconnect During Shutdown

Operating temperature range (°C)

-40 to 85

Rating

Catalog

Number of channels

1

Vin (min) (V)

3

Vin (max) (V)

18

Vout (min) (V)

3

Vout (max) (V)

38

Type

Inductive

Switching frequency (max) (kHz)

1200

Duty cycle (max) (%)

93

LED current per channel (mA)

400

Peak efficiency (%)

90

Topology

Boost

Features

EasyScale 1-Wire Interface, Load Disconnect During Shutdown

Operating temperature range (°C)

-40 to 85

Rating

Catalog

SOT-23 (DBV)

6

8.12 mm² (2.9 mm × 2.8 mm)

WSON (DRV)

6

4 mm² (2 mm × 2 mm)

3-V to 18-V Input voltage range
38-V Open LED protection
200-mV Reference voltage with 2% accuracy
1.2-A Switch FET with 1.2-MHz switching frequency
Flexible one-wire digital and PWM brightness control
Built-in soft start
Up to 90% efficiency
2-mm × 2-mm × 0.8-mm 6-Pin WSON package with thermal pad, and SOT-23 package

3-V to 18-V Input voltage range
38-V Open LED protection
200-mV Reference voltage with 2% accuracy
1.2-A Switch FET with 1.2-MHz switching frequency
Flexible one-wire digital and PWM brightness control
Built-in soft start
Up to 90% efficiency
2-mm × 2-mm × 0.8-mm 6-Pin WSON package with thermal pad, and SOT-23 package

With a 40-V rated integrated switch FET, the TPS61165 device is a boost converter that drives LEDs in series. The boost converter runs at a
1.2-MHz fixed switching frequency with 1.2-A switch current limit, allowing the use of a high-brightness LED in general lighting.

The default white LED current is set with the external sensor resistor R_set, and the feedback voltage is regulated to 200 mV, as shown in the Typical Application drawing below. During the operation, the LED current can be controlled using the one-wire digital interface (EasyScale™ protocol) through the CTRL pin. Alternatively, a pulse-width-modulation (PWM) signal can be applied to the CTRL pin through which the duty cycle determines the feedback reference voltage. In either digital or PWM mode, the TPS61165 device does not burst the LED current; therefore, it does not generate audible noises on the output capacitor. For maximum protection, the device features integrated open-LED protection that disables the TPS61165 device to prevent the output from exceeding its absolute maximum voltage ratings during open LED conditions.

With a 40-V rated integrated switch FET, the TPS61165 device is a boost converter that drives LEDs in series. The boost converter runs at a
1.2-MHz fixed switching frequency with 1.2-A switch current limit, allowing the use of a high-brightness LED in general lighting.

The default white LED current is set with the external sensor resistor R_set, and the feedback voltage is regulated to 200 mV, as shown in the Typical Application drawing below. During the operation, the LED current can be controlled using the one-wire digital interface (EasyScale™ protocol) through the CTRL pin. Alternatively, a pulse-width-modulation (PWM) signal can be applied to the CTRL pin through which the duty cycle determines the feedback reference voltage. In either digital or PWM mode, the TPS61165 device does not burst the LED current; therefore, it does not generate audible noises on the output capacitor. For maximum protection, the device features integrated open-LED protection that disables the TPS61165 device to prevent the output from exceeding its absolute maximum voltage ratings during open LED conditions.

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Technische Dokumentation

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Top-Dokumentation	Typ	Titel	Format-Optionen	Datum
*	Datenblatt	TPS61165 High-Brightness, White LED Driver in WSON and SOT-23 Packages datasheet (Rev. E)	PDF \| HTML	27.03.2019
	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	Optimizing Transient Response of Internally Compensated DC-DC Converters (Rev. B)		29.11.2017
	Anwendungshinweis	Extending the Soft Start Time Without a Soft Start Pin (Rev. B)		15.06.2017
	Anwendungshinweis	Simple Backlight Driver Dimming Performance		20.03.2017
	Anwendungshinweis	Analog PWM Dimming in White-LED Drivers		21.12.2016
	Anwendungshinweis	Inductor Selection in Boost Converters for LCD Backlight Applications		24.10.2016
	Anwendungshinweis	Schottky Diode Selection in Asynchronous Boost Converters		06.09.2016
	Anwendungshinweis	Designing Low Cost Flyback Power Supply Using Boost Converter (TPS61165) for HF		17.04.2014
	Anwendungshinweis	How to Use Analog Dimming With TPS6116x		05.08.2011
	Analog Design Journal	Compensating and measuring the DC/DC converter loop that powers a high-power LED		22.10.2008

Design und Entwicklung

Weitere Bedingungen oder erforderliche Ressourcen enthält gegebenenfalls die Detailseite, die Sie durch Klicken auf einen der unten stehenden Titel erreichen.

Support-Software

TPS6116XEVM-SW — Software für TPS6116x-Evaluierungsmodule

The TPS6116xEVM-SW software provides a software interface for the TPS6116x/70 EVM boards. Use this software to change the TPS6116x IC register via the USB Interface Adapter.