NJW1280 High Capacitance Piezo-sounder Driver with charge pump FEATURES (VDD=3V) DESCRIPTION Output Voltage (VDD = 5V, Differential) 30VPP typ. NJW1280 is a driver for large-capacity piezo-sounder. With Piezo-Sounder Drive Capacity 30nF typ. the built-in charge pump circuit and differential output, it is Internal 3 times Charge pump Circuit enabling to output 30Vpp with 5V single power supply, and Operating Voltage 2.0 to 5.5V can be configure a large-capacity 30nF piezo-sounder with Operating Current four external capacitors. - Active: (F = 4kHz, C = 30nF) 3.5mA typ. IN PIEZO The operating voltage of NJW1280 is 2.0V to 5.5V, and it can - Shutdown 0.5uA max. be used with coin type batteries or Li-ion batteries. When not Input Signal Detection Circuit (Auto Shutdown) operating (no signal), the built-in input signal detection circuit Operating Temperature -40C to 105C automatically switches to the shutdown mode (0.5 A max. at Thermal Shutdown Circuit VDD=3V) to reduce battery consumption and realize a long Current Limit Circuit service life of the set. Low-PVDD Detection Circuit Package Outline EQFN16-G2, The NJW1280 is available in a leaded MSOP10 package and MSOP10 (TVSP10) a 2.3mm x 2.3mm size 0.397mm thick leadless DFN8-G2 package, which can be used for ultra-small wearable devices. APPLICATIONS Security Alarm Fire Alarm Smoke Detector APPLICATION CIRCUIT C =0.22 F C =0.22 F 1 2 CP1 CN1 CP2 CN2 VDD PVDD C 0.22 F C =0.1 F IN OUT Charge Pump Oscillator (3x) Control Low-PVDD Detect Logic Thermal Detector Shutdown OUT1 IN Level Shift Piezo 1M Sounder VSS OUT2 Ver.3.8 - 1 - www.njr.com NJW1280 PIN CONFIGURATIONS 12 11 10 9 (Top View) PVDD 13 8 CN1 CP1 1 10 CN2 (Top View) CP2 14 7 VSS PVDD 2 9 CN1 VDD 15 Exposed 6 OUT2 CP2 3 8 VSS Pad on Underside VDD 16 5 OUT1 VDD 4 7 OUT2 IN 5 6 OUT1 1 2 3 4 NJW1280RB2 TVSP10 NJW1280MG2 EQFN16-G2 PIN NO. SYMBOL MSOP10 (TVSP10) EQFN16-G2 DESCRIPTION N.C. - 1, 3, 4, 9, 11 - CP1 1 12 Capacitor Connection Terminal PVDD 2 13 Charge Pump Output Terminal CP2 3 14 Capacitor Connection Terminal VDD 4 15, 16 Power Supply Terminal IN 5 2 Input Terminal OUT1 6 5 Output Terminal 1 OUT2 7 6 Output Terminal 2 VSS 8 7 VSS Terminal CN1 9 8 Capacitor Connection Terminal CN2 10 10 Capacitor Connection Terminal Exposed Pad: Connect the Exposed Pad on land of float, or GND PRODUCT NAME INFORMATION NJW1280 MG2 (TE1) Part Number Package Taping Form ORDERING INFORMATION PACKAGE HALOGEN- TERMINAL WEIGHT PART NUMBER RoHS MARKING MOQ (pcs) OUTLINE FREE FINISH (mg) NJW1280MG2 (TE1) EQFN16-G2 Yes Yes Sn2Bi 1280 6.5 3000 MSOP10 NJW1280RB2 (TE1) Yes Yes Sn2Bi 1280 19 2000 (TVSP10) Ver.3.8 - 2 - www.njr.com N.C. CP1 IN N.C. N.C. CN2 N.C. N.C.