công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
|
TS19751 bảng dữ liệu(PDF) 5 Page - Taiwan Semiconductor Company, Ltd |
|
TS19751 bảng dữ liệu(HTML) 5 Page - Taiwan Semiconductor Company, Ltd |
5 / 7 page TS19751 Taiwan Semiconductor 5 Version: B1605 The Product is Covered by Patents and/or Pending Patent Applications APPLICATION INFORMATION Start-up Current The typical start-up current is around 45μA. The TS19751 has a built-in HV start-up circuit that avoids the need for a start-up resistor. Under Voltage Lockout (UVLO) A hysteresis UVLO comparator is implemented in TS19751. The turn-on and turn-off thresholds level are fixed at 17.5V and 8V respectively. This hysteresis shown in Fig.1 ensures that the start-up capacitor will be adequate to supply the chip during start-up. For quick start-up of the LED driver, the start-up resistor should be matched with the start-up capacitor. Leading-Edge Blanking (LEB) Each time the power MOSFET is switched on, a turn-on spike will inevitably occur at the sense resistor. To avoid fault trigger, a 400ns leading-edge blanking time is built in. Conventional RC filtering can therefore be omitted. During this blanking period, the current-limit comparator is disabled and cannot switch off the gate driver. VCC Over Voltage Clamp VCC is clamped to 19V by an internal clamping circuit to guarantee IC normal operation. Over Current Protection (OCP) The TS19751 has built-in cycle by cycle over current protection function on CS pin. As the CS pin voltage is larger than VOCP (0.5V), the gate output will be turned off immediately to avoid the driver board to be burned out. Open load Protection (OLP) To prevent the LED driver from being damaged, the TS19751 has an implemented OLP function. The open load protection will shut the gate driver when minimum off time keep shorter than 4.5uS. Over Temperature Protection (OTP) Internal 165℃ comparator will trigger temperature protection (OTP). OTP will shut down system, until internal temperature back to 120℃. Fig.1 |
Số phần tương tự - TS19751 |
|
Mô tả tương tự - TS19751 |
|
|
Link URL |
Chính sách bảo mật |
ALLDATASHEET.VN |
Cho đến nay ALLDATASHEET có giúp ích cho doanh nghiệp của bạn hay không? [ DONATE ] |
Alldatasheet là | Quảng cáo | Liên lạc với chúng tôi | Chính sách bảo mật | Trao đổi link | Tìm kiếm theo nhà sản xuất All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |