TPS61194PWPRQ1-德州仪器

描述

TPS61194PWPRQ1 is designed and developed by Texas Instruments. It is a very good performance LED lighting driver chip that integrates rich feedback of fault detection functions. It is suitable for automotive lighting systems and is an automotive-grade chip. If you want to buy the full range of original Texas Instruments chips, 请联系xt-shenzhen为您服务! ! !

这 TPS61194PWPRQ1 is a low electromagnetic interference (EMI) and easy-to-use automotive high-efficiency LED driver with an integrated DC-DC converter. The DC-DC converter supports boost and SEPIC modes of operation. The device features four high-precision current sinks that can be combined to increase current capability. The DC-DC converter can provide adaptive output voltage control based on the LED current sink headroom voltage. This feature minimizes power consumption by regulating the voltage to the minimum level required under all conditions. To reduce EMI, the DC-DC converter supports spread spectrum, using dedicated pins for switching frequency and external synchronization. The TPS61194PWPRQ1 has a large adjustable frequency range to avoid AM radio band interference.

• Input operating voltage range: 4.5V to 40V
• Four high precision current sinks
– Current match rate is 1% (典型的)
– Light emitting diode (LED) string current up to 100mA/channel
• Dimming ratio up to 10000:1 at 100Hz
• Integrated boost/SEPIC converter for LED string power
– Output voltage up to 45V
– Switching frequency: 300kHz to 2.2MHz
– Toggle sync input
– Spread spectrum to reduce electromagnetic interference (EMI)
• Rich fault detection function
– fault output
– Input Overvoltage Protection (PVO) and Undervoltage Lockout (VLOOK)
– Open and short LED fault detection
– Thermal shutdown