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Audio & Video ICs

Piezo-sounder Driver with Multi-mode charge pump

  • Operating Voltage (2.3 to 5.0V(1x/ 2x Mode), 2.3 to 3.4V(3x Mode))
  • Consumption current (
    (Active) IDS=0.3mA typ. (VIN=3V, DIN=4kHz, CPIEZO=15nF, 1x Mode)
    (Shutdown) IDS=1µA max. (VIN=3V , DIN=0V))
  • Multi-Mode Charge Pump (1x/2x/3x)
  • Input Signal Detector & Shutdown Control
  • Output Short-circuit Protection Circuit
  • C-MOS Technology
  • Package Outline (EQFN12-JE, EQFN16-G2, SSOP14)
General Description
The NJU72501 is a switching driver with multi mode charge pumpfor piezo-sounder. It can drive outputs up to 18Vpp from 3V supply.For adjusting the piezoelectric sounder sound volume, the chargepump can operate in either of a 1x, 2x or 3x mode.Because NJU72501 has the shutdown function, it is suitable forthe battery application.
  • Healthcare
  • Wrist Watches
  • Alarm Clocks
  • Handheld GPS devices
  • PDAs
Package Information
Part Number Package OutlinePinsMaterial Declaration (RoHS/Halogen)Terminal FinishWeight(mg) (Reference)Reflow solderingFlow solderingIron solderingPacking ConditionMSLSolder Foot Print
NJU72501MJE download
12 Sn2Bi 16 Yes - - Non dry pack 1
NJU72501MG2 download
16 Sn2Bi 6.5 Yes - - Non dry pack 1
NJU72501V download
14 Sn2Bi 65 Yes Yes Yes Non dry pack 1
Sample & Buy
Part NumberPackagesStatusPacking SpecificationSample
NJU72501MJE EQFN12-JE (Active)
NJU72501MG2 EQFN16-G2 (Active)
NJU72501V SSOP14 (Active)