PAM8904QJER Diodes Inc. Integrated Circuit (Quad Flat No-Lead) In Stock
Diodes Inc. PAM8904QJER is a high-efficiency piezo haptic driver IC in a compact UQFN-16 (3.0 mm × 3.0 mm) package, delivering up to ±50 V output swing to drive piezo actuators from a 2.5 V to 5.5 V supply. It features programmable waveform generation and I2C interface for flexible haptic feedback control. Available from stock with fast worldwide shipping.
- Manufacturer
- Diodes Inc.
- Package
- Quad Flat No-Lead
- Pin Count
- 17
- Lifecycle
- ACTIVE
- Datasheet
- PAM8904QJER Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.6489(MOQ 1)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Up to ±50 V boosted output swing drives piezo actuators directly from a 2.5 V to 5.5 V supply without external high-voltage rail
- Integrated I2C interface with programmable waveform generation supports complex haptic feedback patterns with minimal MCU overhead
- UQFN-16 (3.0 mm × 3.0 mm) package delivers the smallest available footprint for piezo haptic driver ICs in volume production
- AEC-Q100 qualified for automotive applications requiring reliable haptic feedback in interior HMI systems
Applications
The PAM8904QJER is used in consumer electronics and automotive HMI systems where tactile haptic feedback from piezo actuators is required, such as touchscreens, smart speakers, wearables, and infotainment panel buttons. Its ability to generate up to ±50 V from a single 2.5 V to 5.5 V supply eliminates the need for a separate high-voltage rail, simplifying the power architecture in compact portable devices and in-cabin automotive modules. Designers integrate the PAM8904QJER via its I2C bus in microcontroller-based systems to generate precise vibration waveforms that differentiate product haptic quality.
Specifications
| Pbfree Code | Yes |
| Factory Lead Time | 12Weeks |
| Package | Quad Flat No-Lead |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
| Country of Origin | Mainland China |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What output voltage swing does the PAM8904QJER produce, and how does this enable piezo actuator drive from a low-voltage rail?
The PAM8904QJER generates a differential output swing of up to ±50 V (100 V peak-to-peak) using an integrated boost converter, sourced directly from a 2.5 V to 5.5 V supply input. This onboard voltage multiplication removes the need for an external HV power stage, reducing component count by 8 to 12 passives compared to discrete boost-plus-driver architectures typically used for 60 V piezo excitation.
How does the PAM8904QJER interface with a host microcontroller, and what types of haptic patterns can it produce?
The PAM8904QJER communicates via a standard 2-wire I2C interface supporting up to 400 kHz fast-mode clock, allowing the host MCU to select from built-in waveform libraries or define custom resonance frequency profiles between approximately 50 Hz and 10 kHz. Designers can program click, buzz, and multi-step pulse sequences — including duration and amplitude ramp parameters — directly over I2C using register writes, enabling rich haptic feedback patterns without a dedicated DSP.
For an automotive touchscreen design, how does PAM8904QJER's qualification level compare to a standard consumer-grade haptic driver?
The PAM8904QJER carries AEC-Q100 Grade automotive qualification, meaning it has passed stress tests including 1000 hours high-temperature operating life at 125°C junction temperature and 1000 thermal cycles between -40°C and +150°C. Standard consumer-grade haptic drivers are typically only characterized to 85°C ambient and are not AEC-Q100 tested, making PAM8904QJER the required choice for in-vehicle haptic HMI systems that must meet Tier-1 automotive supplier qualification requirements.
What PCB area does the PAM8904QJER occupy, and how does this compare to alternatives using discrete boost converters?
The PAM8904QJER in its UQFN-16 package occupies 3.0 mm × 3.0 mm = 9 mm² of PCB area, plus decoupling and bootstrap capacitors totaling about 5 additional passives on approximately 15 mm². A discrete approach with a separate boost converter IC (typically 3 mm × 3 mm) plus a class-D amplifier IC (similar size) plus 15 to 20 passives occupies 60 mm² or more, confirming that PAM8904QJER provides a 4× to 5× space reduction in equivalent piezo driver solutions.
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About Diodes Inc.
Diodes Inc. is a leading electronic component manufacturer. FindMyChip sources Diodes Inc. ICs directly from authorized China distributors, offering competitive pricing and reliable stock.
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Diode
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $1.0500 | $1.05 |
| 10+ | $0.7800 | $7.80 |
| 100+ | $0.7330 | $73.30 |
| 250+ | $0.6870 | $171.75 |
| 500+ | $0.6611 | $330.53 |
| 1000+ | $0.6489 | $648.87 |
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