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.
Key Features
- 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
Product Specifications
Application Notes
Brochures
Sample & Buy
Part Number | Package | Packing Type | Unit Price (US$)
* | Quantity | ECCN (EU) | ECCN (US) | Country of Origin |
---|
LNBH23LQTR | VFQFPN 32 5x5x1.0 | Tape And Reel | 0.823 | 1000 | NEC | EAR99 | MALAYSIA |
Quality & Reliability