Product overview
Description
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.
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All 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
Circuit Diagram
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STMicroelectronics - LNBH23L
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Quality and Reliability
| Part Number | Marketing Status | Package | Grade | RoHS Compliance Grade | Material Declaration** |
|---|---|---|---|---|---|
| LNBH23LQTR | Active | VFQFPN 32 5x5x1.0 mm | Industrial | Ecopack2 |
(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.
Sample & Buy
| Part Number | Order from distributors | Order from ST | Marketing Status | ECCN (US) | ECCN (EU) | Packing Type | Package | Temperature (°C) | Country of Origin | Budgetary Price (US$)*/Qty | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| min | max | |||||||||||
| LNBH23LQTR | distributors No availability of distributors reported, please contact our sales office | Active | EAR99 | NEC | Tape and Reel | VFQFPN 32 5x5x1.0 mm | - | - | MALAYSIA | | ||
(*) Suggested Resale Price (USD) per defined quantity for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors