LNBH23L LNB supply and control IC with step-up and I²C interface
Intended for analog and digital satellite receivers, the LNBH23L is a monolithic voltage regulator and interface IC, assembled in QFN32 5 x 5 specifically designed to provide the 13 / 18 V power supply and the 22 kHz tone signalling to the LNB down-converter in the antenna dish or to the multi-switch box. In this application field, it offers a 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 LNB 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 pin) facilitates DiSEqC™ 1.X encoding
- Accurate built-in 22 kHz tone generator suits widely accepted standards
- Low-drop post regulator and high efficiency step-up PWM with integrated power NMOS allow low power losses
- Overload and over-temperature internal protections with I²C diagnostic bits
- LNB short circuit dynamic protection
- ± 4 kV ESD tolerant on output power pins
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功能框图
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LNBH23L 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 |
| LNBH23LQTR |
Active |
|
1000 |
VFQFPN 32 5x5x1.0 |
Tape And Reel |
|
LNBH23LQTR |
DATASHEET
| 描述 |
版本 |
大小 |
| LNBH23L : LNB supply and control IC with step-up and I²C interface |
4 |
478KB |
APPLICATION NOTES
| 描述 |
版本 |
大小 |
| AN3115: LNB power supply based on the LNBH23L supply and control IC with step-up and I²C interface |
3 |
871KB |
BOARDS AND TOOLS
| 型号 |
描述 |
| STEVAL-CBL007V1 |
LNB power supply demonstration board based on the LNBH23L DiSEqC 1.X compliant (QFN) |
