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Diodes Incorporated PAM2803AAF095
- Part No.:
- PAM2803AAF095
- Manufacturer:
- Diodes Incorporated
- Category:
- LED Drivers
- Package:
- SOT-23-6
- Datasheet:
-
PAM2803AAF095.pdf
- Description:
- IC LED DRVR RGLTR 750MA SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:49,803
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Product details
Overview
PAM2803AAF095 from Diodes Incorporated is a 1MHz step-up DC-DC white LED driver IC with integrated 2A/100mΩ NMOS switch, 95mV feedback reference voltage, and shutdown current <1µA. It delivers up to 750mA regulated LED current from 0.9V start-up input, targeting flashlight and camera flash applications powered by two-cell alkaline batteries.
For engineers reviewing the PAM2803AAF095 datasheet, PAM2803AAF095 pinout, PAM2803AAF095 application, or PAM2803AAF095 equivalent, key selection criteria include feedback voltage accuracy (±5mV), low RDS(ON), thermal shutdown at 150°C, and SOT23-6 package compatibility with high-current LED load designs.
Technical Context
The PAM2803AAF095 implements a constant-frequency current-mode boost converter architecture with internal 2A NMOS switch and precision 95mV FB reference. Its 1MHz switching frequency enables compact 2.2–4.7µH inductors and ceramic input/output capacitors.
It operates down to 0.75V hold voltage under 200mA load and features over-temperature protection with 15°C hysteresis. Shutdown mode disconnects both RS resistor and LED load, reducing quiescent current to <1µA while maintaining full isolation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching Frequency | 1.0 MHz ±15% - enables use of small 2.2µH inductors and low-ESR ceramic capacitors |
| Feedback Voltage | 95 mV (typ) - sets LED current as ILED = 95mV/RS; low value minimizes power loss in sense resistor |
| RDS(ON) | 100 mΩ (typ) - reduces conduction loss at 750mA output, supporting >90% peak efficiency |
| Start-Up Voltage | 0.9 V @ 370mA - allows operation from nearly-dead alkaline cells in portable flashlights |
| Shutdown Current | <1 µA - ensures battery longevity in standby mode for battery-powered imaging devices |
| Over-Temp Shutdown | 150 °C - protects IC during sustained high-current LED drive in confined enclosures |
Pinout & Package
The PAM2803AAF095 is housed in a Pb-free, RoHS-compliant 6-lead SOT23-6 package with standard footprint and thermal pad exposure not present.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SW) | Switch Node | Drives external Schottky diode and inductor; carries high di/dt pulsed current up to 2A peak |
| 2 (GND) | Power Ground | Reference for FB, SHDN, and internal circuitry; must be low-impedance connection to minimize noise |
| 3 (FB) | Current Sense Input | Compares voltage across RS to 95mV reference; determines regulated LED current magnitude |
| 4 (SHDN) | Enable/Disable Control | Active-high logic input; pulls internal NMOS gate low when <0.4V to enter sub-1µA shutdown |
| 5 (VOUT) | Boost Output | Delivers regulated current to LED string; requires ≥6.8µF low-ESR ceramic capacitor |
| 6 (VIN) | Input Supply | Accepts 0.9–6V input; supports two-cell alkaline (1.8–3.2V) and Li-ion (2.7–4.2V) sources |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 2A NMOS Switch | Eliminates external high-current MOSFET; reduces BOM count and PCB area in space-constrained flash modules |
| 95mV Feedback Reference | Enables precise LED current setting with 1% RS; lowers sense resistor power dissipation vs. 200–300mV alternatives |
| 0.9V Start-Up Voltage | Extends usable battery life in dual-alkaline flashlight designs by enabling operation below 1.0V per cell |
| Thermal Protection with Hysteresis | Shuts down at 150°C and re-enables at 135°C, preventing thermal runaway during continuous flash bursts |
Applications
| Flashlight Torch | Camera Flash |
|---|---|
Use Scenario: Portable handheld LED torch powered by two AA/AAA alkaline cells. IC Role / Device Role / Timing Role: Boost converter LED driver regulating 750mA current into single or parallel white LEDs. Use Value: 0.9V start-up extends runtime by 15–20% versus higher-threshold drivers; 90% efficiency minimizes heat in plastic housing. | Use Scenario: High-intensity burst flash in digital still cameras (DSC) and smartphone rear cameras. IC Role / Device Role / Timing Role: Fast-response current source delivering 750mA within <10ms after shutter command. Use Value: 1MHz switching enables rapid on/off control without audible coil whine; shutdown current <1µA preserves standby battery life. |
| Digital Camera Module | Camcorder Auxiliary Light |
Use Scenario: Compact DSC or action camera requiring consistent flash intensity across battery discharge. IC Role / Device Role / Timing Role: Constant-current LED driver with tight 5% current accuracy over 1.8–3.6V input range. Use Value: 95mV FB reference and low RDS(ON) maintain stable brightness from fresh to depleted batteries. | Use Scenario: Continuous auxiliary lighting in handheld camcorders during video recording. IC Role / Device Role / Timing Role: Regulated boost driver powering multi-LED array at 750mA with thermal foldback. Use Value: Over-temperature hysteresis prevents abrupt shutdown during extended use; SOT23-6 fits tight board layouts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar white LED boost driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP3012KTR-G1 | Fixed 1.2MHz switching; 100mV FB; no thermal shutdown; 1.5A switch | Lacks over-temperature protection; requires external thermal management in enclosed flash units | Prefer for cost-sensitive, short-duration flash where thermal margin is guaranteed |
| MT9700-13 | 1.3MHz switching; 100mV FB; 1.2A switch; 1.2µA shutdown current | Higher shutdown current and no explicit hold voltage spec; less validated for alkaline start-up | Consider only with Li-ion input; verify 0.9V start-up behavior via bench test |
Compared with AP3012KTR-G1 and MT9700-13, the PAM2803AAF095 uniquely combines 0.9V start-up, 150°C thermal shutdown with hysteresis, and sub-1µA shutdown-making it optimal for battery-life-critical alkaline-powered flash systems.
Availability
PAM2803AAF095 is available at Aetrix Electronics and suitable for flashlight torches, camera flash modules, digital still camera (DSC) illumination, and camcorder auxiliary lighting requiring stable component supply across production lifecycles.
Supply support for PAM2803AAF095 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 manufacturer of discrete semiconductors and analog ICs, specializing in power management, signal integrity, and protection solutions for consumer, industrial, and automotive markets.
The PAM2803 belongs to Diodes' high-efficiency LED driver product line, engineered specifically for portable battery-powered imaging and illumination systems demanding low-voltage start-up and thermal robustness.
FAQ
What is the minimum input voltage required to initiate LED current regulation?
The PAM2803AAF095 starts regulating LED current at 0.9V input when delivering 370mA, verified per DS36400 Rev. 2–2 Section 3. This enables functional operation even with deeply discharged alkaline cells, extending usable battery life beyond typical 1.0V thresholds.
How is LED current accuracy affected by temperature and input voltage variation?
Current accuracy remains within ±5% across VIN = 1.8V to 3.6V and TA = –40°C to +85°C, as specified in Electrical Characteristics. The 95mV FB reference exhibits low drift, and internal compensation maintains regulation stability despite battery voltage sag during flash pulses.
Can the PAM2803AAF095 drive multiple white LEDs in series?
Yes-it supports output voltages up to VF(LED string) + 0.2V, with typical operation up to ~12V. For three 3.7V white LEDs (11.1V total), the device delivers 750mA using a 4.7µH inductor and MBRA210LT3G Schottky diode, as validated in the Typical Applications Circuit.
What layout practices prevent instability or EMI in high-current flash applications?
Place input and output capacitors within 2mm of VIN/VOUT pins; route SW and GND traces wide and short; position the RS resistor directly between FB and GND pins; and avoid routing sensitive analog nodes near high-di/dt paths. These practices suppress ringing and ensure stable 1MHz operation per PCB Layout Guidelines in DS36400.
PAM2803AAF095 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- DC DC Regulator
- Topology:
- Step-Up (Boost)
- Internal Switch(s):
- Yes
- Number of Outputs:
- 1
- Voltage - Supply (Min):
- 0.9V
- Voltage - Supply (Max):
- 5.5V
- Voltage - Output:
- -
- Current - Output / Channel:
- 750mA
- Frequency:
- 1MHz
- Dimming:
- -
- Applications:
- Camera Flash
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
PAM2803AAF095 FAQ
1.How can I place an order for PAM2803AAF095 through Aetrix?
Please submit a Request for Quotation (RFQ) for PAM2803AAF095 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 PAM2803AAF095 reliable?
The price and inventory of PAM2803AAF095 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PAM2803AAF095 is usually 5 days.
3.What payment methods are accepted for PAM2803AAF095?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PAM2803AAF095 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PAM2803AAF095?
PAM2803AAF095 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PAM2803AAF095 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 PAM2803AAF095?
For technical support, including PAM2803AAF095 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PAM2803AAF095 requirements.
6.How does Aetrix verify that PAM2803AAF095 is sourced from the original manufacturer or authorized distributors?
All PAM2803AAF095 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 PAM2803AAF095 meets industry standards.
7.What is the process for return or replacement of PAM2803AAF095?
All PAM2803AAF095 units undergo pre-shipment inspection (PSI). If there is an issue with PAM2803AAF095, 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 PAM2803AAF095 part is unused and in its original packaging.
Return procedure for PAM2803AAF095:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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