Remote controls
Wireless keys and handheld remote controls.
LBT17 433.92 MHz ASK/OOK Transmitter IC with FB1527 Encoding
4,000–11,999 · MOQ 4,000US$0.25per IC
12,000–100,000US$0.20per IC
100,001+ · Volume orderRequest quoteFor production quantities
Typical applications
For compact one-way remote-control transmitters.
LBT17 combines ASK/OOK transmission and FB1527 encoding in one SOP-8 IC.
Doorbells & switches
Simple trigger transmission for home devices.
Alarm triggers
Low-rate alarm and status signalling.
Small controllers
Battery-powered remote-control terminals.
How it works
Ground-triggered key input to encoded RF transmission.
K0–K3 select the encoded key value; PA connects to the applicable-band antenna through its matching network.
K0–K3 key inputsGround-triggeredFB1527
→433.92 MHz
ASK/OOK
ASK/OOK
Compatible receiverReceiver-side decodingRF link
Application boundary: LBT17 is a one-way, low-rate remote-control transmitter IC. It is not a UART device, continuous-data transmitter, or bidirectional communication link.
Default frequency433.92 MHz
Operating voltage2.0–5.5 V
ModulationASK/OOK
EncodingFB1527
Output power14.5 dBm typical
Operating current8 mA typical
Standby current0 µA
ESD6 kV
Application boundaries
Match the RF path to the final product.
Communication range and stability depend on the matching network, antenna, battery, enclosure and installation environment.
Good starting fit
✓ Four ground-triggered key inputs.
✓ ASK/OOK remote-control protocol.
✓ Band-matched crystal, RF network and antenna.
✓ Battery-powered low-rate trigger products.
Check carefully
! Tune matching separately for 315 MHz and 433.92 MHz.
! Keep PA, matching and antenna away from metal and noise.
! Verify VDD at the minimum battery voltage.
! Validate final enclosure and target distance.
Technical specifications
Confirmed selection data for LBT17.
The released LBT17 Datasheet V1.7 is the authority for final circuit, matching and antenna decisions.
Operating voltage2.0–5.5 V · 3.0 V typical
Operating frequency310–450 MHz · 433.92 MHz typical
ModulationASK/OOK
EncodingFB1527 · 20 address bits + 4 key bits
Output power14.5 dBm typical · 17 dBm maximum at 5 V
Operating current8 mA typical at 14 dBm
Standby current0 µA
Shutdown delay1.4 ms typical · 2.0 ms maximum
Minimum pulse width370 µs default · customizable
Operating temperature−40 to +120 °C
ESD rating6 kV
PackageSOP-8
Pin assignment
Eight IC connections
- K3
- Ground-triggered key input / LED; default value 0x01.
- VDD
- Positive supply; 3.0 V typical.
- GND
- Power ground.
- PA
- RF output to the matching network and antenna.
- K2
- Ground-triggered key input; default value 0x02.
- K1
- Ground-triggered key input; default value 0x04.
- K0
- Ground-triggered key input; default value 0x08.
- XTAL
- External crystal connection per reference circuit.
Evaluation
Validate the RF transmitter
- 1 · SupplyConnect VDD, GND and 0.1 µF local decoupling.
- 2 · Key inputTrigger K0–K3 to ground and verify encoded output.
- 3 · RF pathConnect PA through the band-matched network and antenna.
- 4 · Final productTest battery, enclosure, antenna orientation and distance.
Technical downloads
File for evaluation and design-in.
LBT17 Datasheet V1.7
Is LBT17 a UART transmitter?
No. LBT17 is an ASK/OOK remote-control transmitter IC with integrated FB1527 encoding.
How are key inputs triggered?
K0–K3 are ground-triggered; each input has its defined default key value.
Can I use the same RF matching for 315 MHz and 433.92 MHz?
No. Tune the crystal, matching network and antenna for each target band.
Can the IC communicate in both directions?
No. Use a compatible receiver for the receive and decode side of the system.
Purchase options
Order ICs or start with a development kit.
Transmitter IC
LBT17 · 433.92 MHz
SKU: LBT17-433M-370_BD · Stock: 3,343,485
US$0.254,000–11,999 · per IC
US$0.2012,000–100,000 · applied in cart
Online purchase quantity: 4,000–100,000 ICs. Request a quote for 100,001 or more.
Development kit
Start testing faster
US$69 / set
- 10 LBT17 ICs
- 10 Ling-T1pro modules
- 1 development assistant
- 5 TT02 antennas
- 3 Ling-R1 decoder modules
- Free shipping
SKU: SET-LBT17-433M-370_BD · Stock: 200 sets
Volume order
100,001 ICs or more?
Send the target quantity, delivery location and schedule for a quotation.
Request bulk quote →