NJW1280
FEATURES
(VDD=3V)
- Output Voltage (VDD = 5V, Differential)
- Piezo-Sounder Drive Capacity
- Internal 3 times Charge pump Circuit
- Operating Voltage
- Operating Current
30VPP typ. 30n F typ.
2.0 to 5.5V
- Active: (FIN = 4k Hz, CPIEZO = 30n F)
3.5m A typ.
- Shutdown
0.5u A max.
- Input Signal Detection Circuit (Auto Shutdown)
- Operating Temperature
- Thermal Shutdown Circuit
- Current Limit Circuit
-40°C to 105°C
- Low-PVDD Detection Circuit
- Package Outline
EQFN16-G2,
MSOP10 (TVSP10)
- APPLICATIONS
- Security Alarm
- Fire Alarm
- Smoke Detector
- DESCRIPTION
NJW1280 is a driver for large-capacity piezo-sounder. With the built-in charge pump circuit and differential output, it is enabling to output 30Vpp with 5V single power supply, and can be configure a large-capacity 30n F piezo-sounder with four external capacitors.
The operating voltage of NJW1280 is 2.0V to 5.5V, and it can be used with coin type batteries or Li-ion batteries. When not operating (no signal), the...
