The TPS61500 is a monolithic switching regulator with integrated 3-A, 40-V power switch. It is an ideal driver for high brightness 1-W or 3-W LED. The device has a wide input voltage range to support application with input voltage from multi-cell batteries or regulated 5-V or 12-V power rails.
The LED current is set with an external sensor resistor R3, and the feedback voltage that is regulated to 200 mV by current mode PWM (pulse width modulation) control loop, as shown in Typical Application Circuit. The device supports analog and pure PWM dimming methods for LED brightness control. Connecting a capacitor to the DIMC pin configures the device to be used for analog dimming, and the LED current varies proportional to the duty cycle of an external PWM signal. Floating the DIMC pin configures the device for pure PWM dimming with the average LED current being the PWM signal’s duty cycle times a set LED current.
The device features a programmable soft-start function to limit inrush current during start-up, and it has other built-in protection features, such as pulse-by-pulse overcurrent limit, overvoltage protection, and thermal shutdown. The TPS61500 is available in 14-pin HTSSOP package with PowerPAD.
| Typ | Titel | Datum | ||
|---|---|---|---|---|
| * | Data sheet | TPS61500 High-Brightness, LED Driver With Integrated 3-A, 40-V Power Switch datasheet (Rev. F) | PDF | HTML | 30 Mai 2019 |
| White paper | Common LED Functions and LED Driver Design Considerations | 21 Sep 2020 | ||
| Application note | Performing Accurate PFM Mode Efficiency Measurements (Rev. A) | 11 Dez 2018 | ||
| Application note | TPS61500 SEPIC Configuration | 05 Apr 2018 | ||
| Application note | Extending the Soft Start Time Without a Soft Start Pin (Rev. B) | 15 Jun 2017 | ||
| Analog Design Journal | Design considerations for a resistive feedback divider in a DC/DC converter | 26 Apr 2012 | ||
| Application note | Analog Dimming With the TPS61500 Using an Analog Input Signal | 30 Apr 2009 | ||
| EVM User's guide | TPS61500EVM-369 User's Guide | 31 Jul 2008 | ||
| More literature | Seminar 400 Topic 1 - Current-Mode Control of Switching Power Supplies | 15 Feb 2001 |
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The TPS61500EVM-369 facilitates evaluation of the TPS61500 High Brightness LED Driver IC.
| Gehäuse | Pins | Herunterladen |
|---|---|---|
| HTSSOP (PWP) | 14 | Optionen anzeigen |
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