My Inquiry
My Account
Diodes Incorporated PAM8907SB10-7
- Part No.:
- PAM8907SB10-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Special Purpose Amplifiers
- Package:
- 10-UFQFN Exposed Pad
- Datasheet:
-
PAM8907SB10-7.pdf
- Description:
- AUDIO LOW VOLT U-QFN2020-10 T&R
- Quantity:
- Payment:
- Shipping:
Inventory:5,676
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
PAM8907SB10-7 from Diodes Incorporated is a piezoelectric sounder driver IC with integrated 1.8MHz current-mode boost converter, delivering up to 31VPP differential output across OUTP/OUTN to drive ceramic/piezo sounders. It operates from 1.8V–5.5V supply, supports dual selectable boost outputs (11V or 15.6V via VSET), and achieves <1μA shutdown current - enabling ultra-low-power alarm and tracker applications.
For engineers reviewing the PAM8907SB10-7 datasheet, PAM8907SB10-7 pinout, PAM8907SB10-7 application circuit for piezo drivers, or PAM8907SB10-7 equivalent for battery-powered audio alert systems, this device offers verified fast turn-on (1.1ms), thermal/overcurrent/UVLO/OVP protections, and U-QFN2020-10 space-constrained packaging.
Technical Context
The PAM8907SB10-7 integrates a current-mode boost controller with soft-start, cycle-by-cycle overcurrent protection, and dual-loop regulation (inner current loop + outer voltage loop) to maintain stable 11V/15.6V VOUT under varying load conditions. Its proprietary piezo driver uses fully differential architecture with short turn-on/turn-off timing and no voltage cross at shutdown.
Control logic implements auto wake-up/shutdown: DIN low ≥100ms triggers <1μA quiescent mode; DIN high or pulsed input resumes operation after 1.1ms VOUT ramp-up. Protection includes OTP (+150°C), OCP, UVLO (~1.6V), VOUT OV/UV, and hiccup-mode recovery.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 1.8V–5.5V input range - supports single-cell Li-ion, alkaline, or CR2032 batteries without external LDO. |
| Boost Output Voltage | Selectable 11V or 15.6V via TTL-level VSET pin - enables SPL optimization across different piezo sounder impedance/load profiles. |
| Differential Output | 31VPP max across OUTP/OUTN - delivers high acoustic pressure for compact piezo elements in space-constrained trackers or alarms. |
| Shutdown Current | <1μA - extends battery life in intermittent-alert applications like asset trackers or smoke detectors. |
| Turn-On Delay | 1.1ms from DIN high to 90% VOUT - ensures rapid audible response for time-critical alerts. |
| Oscillation Frequency | 1.8MHz typical boost switching - allows use of small 1.0μH inductor and reduces EMI vs lower-frequency converters. |
| Thermal Protection | +150°C junction OTP with +30°C hysteresis - prevents latch-up during sustained high-load operation in sealed enclosures. |
Pinout & Package
Package: U-QFN2020-10 (2.0mm × 2.0mm, 0.4mm pitch, exposed thermal pad). Dimensions per Diodes Package Outline U-QFN2020-10 Rev. A.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 VCC | LDO output | Internal 5V regulator output - requires 1μF decoupling capacitor for stable internal biasing. |
| 2 GND | Power ground | Main ground reference for all circuits; must connect to exposed epoxy pad for thermal dissipation. |
| 3 BOOT | Bootstrap capacitor node | Drives high-side FET gate; requires 0.1μF/25V ceramic capacitor placed adjacent to pin. |
| 4 SW | Switch node | Connects to external inductor and optional Schottky diode - carries peak currents up to 1.6A. |
| 5 VOUT | Boost output | Regulated 11V/15.6V supply for piezo driver stage - requires 1–2.2μF/25V ceramic capacitor. |
| 6 OUTN | Negative output | Differential piezo drive terminal - complements OUTP to generate zero-crossing-free 31VPP swing. |
| 7 OUTP | Positive output | Differential piezo drive terminal - paired with OUTN for balanced high-voltage AC drive. |
| 8 DIN | PWM control input | TTL-compatible enable/disable signal; low ≥100ms enters shutdown, high resumes operation. |
| 9 VSET | VOUT selection | TTL logic input: low = 11V, high = 15.6V - sets boost output without external resistors. |
| 10 VIN | Battery input | Main power input (1.8–5.5V); requires 1μF + 10μF decoupling network near pin. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated boost + piezo driver | Eliminates need for separate DC-DC and driver ICs - reduces BOM count and PCB area in compact trackers. |
| Auto shutdown/wake-up | Hardware-based DIN-triggered state machine - removes firmware dependency for low-power alert duty cycles. |
| No voltage cross at shutdown | Ensures zero differential voltage across piezo terminals during disable - prevents unwanted acoustic pop or stress. |
| High-impedance output in shutdown | OUTP/OUTN enter Hi-Z state - isolates piezo element from residual charge, avoiding false triggering. |
| Low EMI 1.8MHz switching | Enables smaller filter components and eases EMC compliance in wireless devices sharing same PCB. |
Applications
| Bluetooth Asset Trackers | Air Humidifier Piezo Drivers |
|---|---|
|
Use Scenario: Compact GPS-enabled tags that emit audible alerts when out of Bluetooth range or geofence breach occurs. IC Role / Device Role / Timing Role: Piezo sounder driver with fast 1.1ms wake-up and 31VPP output to ensure loud, reliable alert even on coin-cell power. Use Value: Enables >1-year battery life with periodic alerts due to <1μA shutdown current and efficient 1.8MHz boost conversion. |
Use Scenario: Ultrasonic mist generation in portable humidifiers using piezoelectric transducers. IC Role / Device Role / Timing Role: High-voltage AC driver supplying precise 11V/15.6V boosted excitation to piezo plates at resonant frequency. Use Value: Delivers clean differential drive without voltage cross, minimizing mechanical stress and extending transducer lifetime. |
| Smart Home Security Alarms | Haptic Feedback Modules |
|
Use Scenario: Battery-powered door/window sensors and motion detectors requiring audible local alarm. IC Role / Device Role / Timing Role: Low-quiescent piezo driver with thermal/overvoltage protection - ensures fail-safe operation in enclosed plastic housings. Use Value: Integrated OTP (+150°C) and OCP prevent thermal runaway during extended alarm tones in unventilated enclosures. |
Use Scenario: Tactile feedback in wearable health monitors or smart remotes using miniature piezo actuators. IC Role / Device Role / Timing Role: Fast-response differential driver generating controlled 31VPP waveforms synchronized to UI events. Use Value: Short turn-on/turn-off timing enables crisp, repeatable haptic pulses without mechanical ringing or overshoot. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar piezo sounder driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Texas Instruments DRV8662 | Higher 100VPP output but requires external boost; no integrated VOUT selection or auto-shutdown logic. | Requires additional IC and layout area; better suited for high-SPL industrial alarms than space-constrained trackers. | Choose if >31VPP output or programmable frequency is required; avoid if minimal BOM and auto-power management are priorities. |
| Rohm BD7123NUX | Integrated boost at fixed 12V output; lacks VSET pin flexibility and has slower 5ms turn-on delay. | Less suitable for time-critical alerts; limited to single-output-voltage designs without hardware reconfiguration. | Choose only for cost-sensitive, non-time-critical piezo applications where 12V output suffices and 1.1ms response is unnecessary. |
Compared with DRV8662 and BD7123NUX, the PAM8907SB10-7 uniquely combines dual-VOUT selection, sub-millisecond wake-up, and <1μA shutdown in a 2mm² package - making it optimal for battery-limited, size-constrained piezo alert systems requiring design simplicity and long operational life.
Availability
PAM8907SB10-7 is available at Aetrix Electronics and suitable for Bluetooth asset trackers, smart home security alarms, and portable air humidifier piezo drivers requiring stable component supply, consistent parametric performance, and RoHS-compliant manufacturing.
Supply support for PAM8907SB10-7 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Diodes Incorporated is a global semiconductor company specializing in discrete, analog, and mixed-signal solutions, with design centers across Asia, Europe, and the US, and manufacturing in IATF 16949-certified facilities.
The PAM8907 belongs to Diodes' Power Management & Audio Driver product line, engineered specifically for ultra-low-power, high-efficiency piezoelectric actuation in battery-operated consumer and IoT endpoints.
FAQ
What is the minimum external component count required to operate the PAM8907SB10-7?
The PAM8907SB10-7 requires only five external components for basic operation: one 1.0μH inductor, one 0.1μF bootstrap capacitor, one 1μF VCC capacitor, one 1–2.2μF VOUT capacitor, and one 1μF + 10μF VIN decoupling network. No resistors or external feedback networks are needed due to its integrated VSET logic and fixed boost regulation.
Can the PAM8907SB10-7 drive piezo elements with capacitance beyond 33nF?
Yes - the datasheet specifies operation with CPIEZO = 33nF, but application guidance recommends adding a 10μF capacitor at VOUT for loads exceeding 100nF (e.g., multi-element piezo stacks in smoke alarms). The driver's 14mA short-circuit current and robust output stage support higher capacitive loads without instability.
How does the optional Schottky diode affect efficiency and layout?
A 20V/1A Schottky diode placed between SW and VOUT reduces power consumption by ~20% by bypassing the internal high-side FET's RDS(ON) loss during freewheeling. Layout requires placing the diode adjacent to SW and VOUT pins with minimal trace length to preserve EMI benefits of the 1.8MHz switching frequency.
Is the U-QFN2020-10 package compatible with standard reflow profiles?
Yes - the U-QFN2020-10 package has Moisture Sensitivity Level 1 (per J-STD-020) and is rated for standard lead-free reflow profiles (peak 260°C). Its NiPdAu-plated terminals meet J-STD-002 solderability requirements, and the 0.4mm pitch supports fine-pitch stencil printing with appropriate aperture design.
PAM8907SB10-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 10-UFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Driver
- Applications:
- -
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- U-QFN2020-10
PAM8907SB10-7 FAQ
1.How can I place an order for PAM8907SB10-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for PAM8907SB10-7 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for PAM8907SB10-7 reliable?
The price and inventory of PAM8907SB10-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PAM8907SB10-7 is usually 5 days.
3.What payment methods are accepted for PAM8907SB10-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PAM8907SB10-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PAM8907SB10-7?
PAM8907SB10-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PAM8907SB10-7 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for PAM8907SB10-7?
For technical support, including PAM8907SB10-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PAM8907SB10-7 requirements.
6.How does Aetrix verify that PAM8907SB10-7 is sourced from the original manufacturer or authorized distributors?
All PAM8907SB10-7 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that PAM8907SB10-7 meets industry standards.
7.What is the process for return or replacement of PAM8907SB10-7?
All PAM8907SB10-7 units undergo pre-shipment inspection (PSI). If there is an issue with PAM8907SB10-7, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The PAM8907SB10-7 part is unused and in its original packaging.
Return procedure for PAM8907SB10-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PAM8907SB10-7 Tags
-
TSM103WIDT
STMicroelectronics
-
LM392M/NOPB
Texas Instruments
-
MCP6S93T-E/UN
Microchip Technology
-
INA137UA/2K5
Texas Instruments
-
INA134UA/2K5
Texas Instruments
-
TS34118CS28 RDG
Taiwan Semiconductor Corporation
-
SI8920BC-IPR
Skyworks Solutions Inc.
-
ADUM3190ARQZ-RL7
Analog Devices Inc.
-
ADUM3190ARQZ
Analog Devices Inc.
-
AMC1311BDWVR
Texas Instruments
-
AMC1350DWVR
Texas Instruments
-
ADUM3190SRQZ-RL7
Analog Devices Inc.
Tech Hub
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
Engineering guide to Raspberry Pi alternatives, covering chip-level differences, Orange Pi, ROCK, Jetson, Banana Pi, NanoPi, Compute Module, Pico, GPIO, camera, HAT compatibility, and replacement risks…
Engineering guide to dynamic load response testing for high-current buck converters, covering load step setup, slew rate, Vcore undershoot, overshoot, recovery time, probe location, output capacitors a…
