LNBH24L Dual LNBS supply and control IC with step-up and I²C interface
Intended for analog and digital DUAL satellite receivers/Sat-TV, Sat-PC cards, the LNBH24L is a monolithic voltage regulator and interface IC, assembled in QFN 5x5 ePAD, specifically designed to provide the 13 / 18 V power supply and the 22 kHz tone signaling for two independent LNB down-converters in the antenna dishes and/or multi-switch box. In this application field, it offers a dual tuner STBs complete solution with extremely low component count, low power dissipation together with simple design and I²C standard interfacing
技术特性
- Complete interface between LNBS and I²C bus
- Built-in DC-DC converter for single 12 V supply operation and high efficiency (typ. 93%@0.5 A)
- Selectable output current limit by external resistor
- Compliant with main satellite receivers output voltage specification
- Auxiliary modulation input (EXTM) facilitates DiSEqC™ 1.X encoding
- Low-drop post regulator and high efficiency step-up PWM with integrated power N-MOS allow low power losses
- Overload and over-temperature internal protections with I²C diagnostic bits
- Output voltage and output current level diagnostic feedback by I²C bits
- LNB short circuit dynamic protection
- +/- 4 kV ESD tolerant on output power pins
|
功能框图
 |
LNBH24L 订购信息
| 订购型号 |
产品状态 |
美金价格 |
数量 |
封装 |
包装形式 |
温度范围 |
材料声明 |
| LNBH24LQTR |
Active |
1.709 |
1000 |
VFQFPN 32 5x5x1.0 |
Tape And Reel |
|
LNBH24LQTR |
DATASHEET
| 描述 |
版本 |
大小 |
| LNBH24L : Dual LNBS supply and control IC with step-up and I²C interface |
2 |
536KB |
APPLICATION NOTES
| 描述 |
版本 |
大小 |
| AN3352: Dual LNB power supply based on the LNBH24L supply and control IC with step-up and I²C interface |
3 |
1292KB |
BOARDS AND TOOLS
| 型号 |
描述 |
| STEVAL-CBL006V1 |
Demonstation board: power supply for LNB based on the LNBH24 (QFN32) |
