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Diodes Incorporated PAM8019KGR
- Part No.:
- PAM8019KGR
- Manufacturer:
- Diodes Incorporated
- Category:
- Audio Amplifiers
- Package:
- 20-UFQFN Exposed Pad
- Datasheet:
-
PAM8019KGR.pdf
- Description:
- IC AMP D/AB STER 3W U-QFN4040-20
- Quantity:
- Payment:
- Shipping:
Inventory:46,680
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Product details
Overview
PAM8019KGR from Diodes Incorporated is a stereo 3W Class-D audio power amplifier with integrated Class-AB headphone driver, DC volume control, non-clip power limit (NCPL), and programmable undervoltage protection (UVP). It operates from 2.8V to 5.5V, delivers 3.0W into 4Ω (THD+N = 10%) and 60mW into 32Ω headphones, and uses a U-QFN4040-20 package for space-constrained portable audio systems including LCD monitors, projectors, and active speakers.
For engineers reviewing the PAM8019KGR datasheet, PAM8019KGR pinout, PAM8019KGR application, or PAM8019KGR equivalent, key selection considerations include its dual-mode output (speaker/headphone), 64-step DC volume control range (+20dB to –60dB), NCPL threshold programming via PL pin, UVP shutdown at 1.2V on UVP pin, and thermal/overcurrent protection with auto-recovery.
Technical Context
The PAM8019KGR integrates two independent amplifier paths: a filter-free Class-D BTL stage for speakers (200–300kHz oscillator) and a low-noise Class-AB SE stage for headphones. Its internal PWM modulator uses adaptive gain control to maintain THD+N ≤ 0.08% at 1kHz under full load, while the NCPL circuit dynamically reduces gain when output power approaches user-defined limits set by the PL pin voltage.
Control logic includes active-low SD (shutdown), active-high Mute, and HP/SPK mode-select input that reconfigures internal routing and biasing. The device implements hysteresis in both UVP (via external resistor divider) and thermal protection (trip at +150°C, recovery at +108°C), ensuring stable operation across –40°C to +85°C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Power (Class-D) | 3.0W into 4Ω @ THD+N = 10%, VDD = 5V - enables loud, efficient speaker drive without external heat sinking |
| Output Power (Headphone) | 60mW into 32Ω @ THD+N = 1% - sufficient for line-level headphone monitoring with low distortion |
| DC Volume Control | 64-step linear-in-dB range from +20dB to –60dB - eliminates need for external digital potentiometer or DAC |
| Non-Clip Power Limit | Programmable via PL pin voltage (0.27×VDD to 0.45×VDD) - prevents speaker damage by limiting peak output before clipping occurs |
| Undervoltage Protection | Shuts down at 1.2V on UVP pin with user-defined hysteresis - avoids pop noise during brown-out conditions |
| Quiescent Current | 7mA @ VDD = 5V, speaker mode, no load - supports battery-powered devices with multi-hour runtime |
| THD+N (Speaker) | 0.08% @ 1kHz, 0.8W into 8Ω - preserves audio fidelity in mid-power consumer playback |
| SNR (Headphone) | 89dB A-weighted - ensures clean signal path for sensitive earphone loads |
Pinout & Package
Package: U-QFN4040-20 (4.0mm × 4.0mm, 0.5mm pitch, exposed thermal pad).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 19 | ROUTN / ROUTP | Right-channel Class-D BTL speaker outputs - require no LC filter due to spread-spectrum modulation |
| 2, 14 | HPROUT / HPLOUT | Right/left headphone SE outputs - internally biased for 32Ω loads with DC-coupled capability |
| 3 | SD | Active-low global shutdown - pulls internal bias to zero, reducing current to 1µA |
| 4 | Bypass | Connects to 0.47–1.0µF ceramic capacitor - sets startup timing and suppresses reference noise coupling |
| 5, 7 | RIN / LIN | Differential inputs for speaker channels - high-impedance (33kΩ) with 1V common-mode range |
| 6, 18 | GND | Power ground pins - must be connected to low-impedance PCB plane; PAD also connects to GND |
| 8 | Volume | Analog DC voltage input (0–5V) - maps directly to 64-step gain table per Table 1 in datasheet |
| 9 | Mute | Active-high output disable - mutes speaker outputs instantly without volume ramping |
| 10 | HP/SPK | Mode select - high = headphone mode (enables AB amps), low = speaker mode (enables Class-D amps) |
| 11 | PL | NCPL reference input - voltage determines maximum output power limit per Table 2 |
| 12 | UVP | Undervoltage detection input - comparator triggers shutdown when voltage drops below 1.2V |
| 13, 16, 20 | VDD | Primary supply pins - three separate connections reduce IR drop and improve PSRR |
| 15, 17 | LOUTN / LOUTP | Left-channel Class-D BTL speaker outputs - identical electrical behavior to right channel |
Key Features
| Feature | Design Value |
|---|---|
| Filter-free Class-D architecture | Eliminates external LC output filters - reduces BOM count and PCB area in portable designs |
| 64-step DC volume control with hysteresis | Enables precise analog volume setting without microcontroller intervention or I²C interface |
| Non-clip power limit (NCPL) | Prevents audible clipping by dynamically scaling gain before output saturation - protects speakers and improves perceived loudness |
| Programmable UVP with hysteresis | Allows custom brown-out threshold and recovery margin using two external resistors - avoids pop during battery discharge |
| Thermal and overcurrent protection with auto-recovery | Shuts down at +150°C junction temperature and resumes operation after cooling to +108°C - no manual reset required |
| Low EMI spread-spectrum modulation | Reduces radiated emissions by distributing switching energy across 200–300kHz band - simplifies EMC compliance |
Applications
| LCD Monitors & TVs | Portable Projectors |
|---|---|
Use Scenario: Integrated audio subsystem in compact display units with dual output requirements (internal speaker + headphone jack). IC Role / Device Role / Timing Role: Dual-path audio amplifier managing simultaneous speaker BTL drive and headphone SE drive under single VDD rail. Use Value: Eliminates need for separate headphone amp IC; 64-step DC volume enables OEM front-panel knob control without MCU firmware. |
Use Scenario: Audio output in battery-powered all-in-one projector with limited board space and thermal budget. IC Role / Device Role / Timing Role: Primary audio power stage delivering 3W speaker output and 60mW headphone output from single 5V supply. Use Value: 7mA quiescent current extends battery life; NCPL prevents speaker damage during dynamic video content peaks. |
| Active Portable Speakers | Game Consoles & DVD Players |
Use Scenario: Compact Bluetooth speaker requiring high-efficiency amplification and clean headphone monitoring. IC Role / Device Role / Timing Role: Class-D speaker driver with integrated headphone buffer and programmable UVP for Li-ion battery protection. Use Value: UVP shutdown at 1.2V prevents pop during battery depletion; thermal auto-recovery maintains reliability during extended play. |
Use Scenario: Audio subsystem in handheld gaming device or portable DVD player with shared power rail and space constraints. IC Role / Device Role / Timing Role: Stereo audio amplifier supporting both speaker playback and private headphone listening via HP/SPK mode select. Use Value: Mode-switching eliminates need for external multiplexers; low THD+N (0.08%) ensures fidelity for game audio and movie soundtracks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar stereo Class-D + headphone amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PAM8019E | Pin-compatible revision with improved ESD rating (±4kV HBM) and updated thermal derating curve; same electrical specs. | Recommended for new designs per Diodes' notice; supports same use cases but with enhanced robustness. | Select PAM8019E for production ramps; PAM8019KGR remains valid for legacy replacement only. |
| TPA2013D1RTJR | TI part with 3W Class-D + 100mW headphone, but requires I²C control for volume and lacks NCPL; higher IQ (10mA). | Suitable where digital volume control is preferred and external protection logic can replace NCPL/UVP. | Choose only if system already uses I²C infrastructure and can implement external power limiting. |
Compared with PAM8019KGR, the PAM8019E offers identical functionality with enhanced ESD immunity and lifecycle support, while the TPA2013D1RTJR trades analog volume simplicity and NCPL for digital configurability and higher headphone output - making it less suitable for cost-sensitive, analog-control-focused designs.
Availability
PAM8019KGR is available at Aetrix Electronics and suitable for LCD monitors, portable projectors, and active speakers requiring stable component supply, long-term availability, and RoHS-compliant packaging.
Supply support for PAM8019KGR 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 ICs for power management, signal integrity, and connectivity applications.
The PAM8019KGR belongs to Diodes' PAM audio amplifier product line, designed specifically for space-constrained, battery-aware consumer audio systems requiring dual-output flexibility and analog control simplicity.
FAQ
What is the recommended bypass capacitor value for PAM8019KGR?
A ceramic capacitor of 0.47µF to 1.0µF is recommended on the Bypass pin. This value controls startup timing, suppresses reference noise coupling into the output, and minimizes click/pop during power-on/off transitions. Placement must be within 2mm of the pin with short, low-inductance traces to maximize effectiveness.
How does the Non-Clip Power Limit (NCPL) function protect speakers?
The NCPL circuit monitors output power in real time and reduces amplifier gain before clipping occurs, preserving waveform integrity. When the PL pin voltage falls between 0.27×VDD and 0.45×VDD, NCPL activates and limits maximum output to values defined in Table 2 - e.g., 2.3W into 4Ω - preventing mechanical stress and thermal overload in speakers.
Can PAM8019KGR drive 16Ω headphones?
No - the Class-AB headphone amplifier is optimized for 32Ω loads, delivering 60mW at 1% THD+N. Driving 16Ω would increase current demand beyond design limits, raising THD+N and potentially triggering thermal protection. For lower impedances, external buffering or a dedicated headphone amp is required.
Is PAM8019KGR qualified for automotive applications?
No - the PAM8019KGR is not AEC-Q100 qualified. Diodes explicitly states it is "NOT RECOMMENDED FOR NEW DESIGNS" and directs automotive users to contact their representative for PPAP-capable, IATF 16949-manufactured alternatives meeting AEC-Q100/101/200 requirements.
PAM8019KGR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 20-UFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Class D, Class AB
- Output Type:
- 2-Channel (Stereo) with Stereo Headphones
- Max Output Power x Channels @ Load:
- 3W x 2 @ 4Ohm
- Voltage - Supply:
- 2.8V ~ 5.5V
- Features:
- Mute, Short-Circuit and Thermal Protection
- Mounting Type:
- Surface Mount
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- U-QFN4040-20
PAM8019KGR FAQ
1.How can I place an order for PAM8019KGR through Aetrix?
Please submit a Request for Quotation (RFQ) for PAM8019KGR 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 PAM8019KGR reliable?
The price and inventory of PAM8019KGR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PAM8019KGR is usually 5 days.
3.What payment methods are accepted for PAM8019KGR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PAM8019KGR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PAM8019KGR?
PAM8019KGR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PAM8019KGR 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 PAM8019KGR?
For technical support, including PAM8019KGR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PAM8019KGR requirements.
6.How does Aetrix verify that PAM8019KGR is sourced from the original manufacturer or authorized distributors?
All PAM8019KGR 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 PAM8019KGR meets industry standards.
7.What is the process for return or replacement of PAM8019KGR?
All PAM8019KGR units undergo pre-shipment inspection (PSI). If there is an issue with PAM8019KGR, 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 PAM8019KGR part is unused and in its original packaging.
Return procedure for PAM8019KGR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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