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Product Detailed Parameters
- Description：PIEZO-SOUNDER DRIVER WITH MULTI-
- Series：-
- Mfr：Nisshinbo Micro Devices Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：Class AB
- Output Type：1-Channel (Mono)
- Max Output Power x Channels @ Load：-
- Voltage - Supply：2.3V ~ 3.4V, 2.3V ~ 5V
- Features：-
- Mounting Type：Surface Mount
- Supplier Device Package：12-EQFN (3x3)
- Package / Case：12-WFQFN Exposed Pad
- Operating Temperature：-40°C ~ 85°C
- Grade：-
- Qualification：-
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Overview
The NJU72501MJE-TE2 is a piezo-sounder driver featuring a multi-mode charge pump, enabling output voltages up to 18Vpp from a 3V supply. It operates within a voltage range of 2.3V to 5.0V for 1x and 2x modes, and 2.3V to 3.4V for 3x mode. The device includes an input signal detector and shutdown control, with active consumption current typically at 0.3mA and shutdown current at 1uA maximum. It offers short-circuit protection and is available in EQFN12-JE, EQFN16-G2, and SSOP14 packages.
Feature Summary
- Multi-mode charge pump supporting 1x, 2x, and 3x step-up configurations
- Input signal detector with automatic shutdown control functionality
- Integrated output short-circuit protection circuit
- Direct replacement compatibility with MAS6240
Applications
- Healthcare devices
- Wrist watches
- Alarm clocks
- Handheld GPS devices
- PDAs
Procurement Notes
Verify the specific package suffix against the datasheet to ensure correct pinout and thermal characteristics. Confirm that the ordering suffix matches the required package type (EQFN12-JE, EQFN16-G2, or SSOP14). Ensure component authenticity through authorized distribution channels. Review absolute maximum ratings for power dissipation limits under different mounting conditions before finalizing procurement specifications.
Selection Notes
Select the appropriate charge pump mode based on the required output voltage and supply constraints. Consider the operating temperature range of -40°C to +85°C for environmental suitability. Evaluate the package options for thermal performance and board space requirements. Verify compatibility with the target piezo-sounder impedance and drive frequency specifications.
Part Context
This component belongs to the NJU72501 series of switching drivers designed specifically for piezo-sounders. It utilizes C-MOS technology to achieve low power consumption while providing high output voltage via internal charge pumps. The series supports various package formats to accommodate different design layouts and thermal management needs.
Replacement Considerations
The datasheet explicitly lists the MAS6240 as a direct replacement. Verify pin-to-pin compatibility and electrical parameter alignment when substituting this component with other piezo-sounder drivers in existing designs.
