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Diodes Incorporated AP8802SG-13
- Part No.:
- AP8802SG-13
- Manufacturer:
- Diodes Incorporated
- Category:
- LED Drivers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AP8802SG-13.pdf
- Description:
- IC LED DRIVER RGLTR PWM 1A 8SOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,823
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Product details
Overview
AP8802SG-13 from Diodes Incorporated is a 1A constant-current step-down DC/DC converter optimized for driving up to 13 series-connected LEDs from 8V–48V input. It integrates a 0.65Ω (typ) internal MOSFET, operates up to 700kHz switching frequency, and supports analog/PWM dimming via the CTRL pin. Used in commercial lighting, LCD backlighting, and architectural accent lighting where uniform LED brightness and compact board area are critical.
For engineers reviewing the AP8802SG-13 datasheet, AP8802SG-13 pinout, AP8802SG-13 application, or AP8802SG-13 equivalent, key selection factors include its 1A output current capability, SO-8 package thermal resistance (θJA = 82°C/W), open-circuit LED protection, 0.2V shutdown threshold on CTRL, and RSET-based current programming with ±8% accuracy over input voltage range.
Technical Context
The AP8802SG-13 implements a current-mode buck topology with internal 1A power switch and 200mV current-sense threshold. Its control loop regulates LED current by adjusting duty cycle based on feedback from the SET pin voltage relative to VIN.
Dimming is implemented through dual-mode CTRL pin operation: analog control (0.3–2.5V) adjusts output current from 25% to 200% of RSET-set value, while PWM input (0–0.2V low) enables full on/off modulation with >100:1 dynamic range. Built-in soft-start and open-LED fault protection ensure robust startup and fail-safe behavior.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 1A continuous; set externally via RSET between VIN and SET pins (ILED ≈ 0.2V / RSET) |
| Input Voltage Range | 8V to 48V; supports wide-range industrial and automotive supply rails without pre-regulation |
| Switching Frequency | Up to 700kHz; enables use of compact 68µH inductors and reduces EMI filter size |
| Efficiency | Up to 92%; minimizes thermal load in enclosed lighting fixtures and extends thermal design margin |
| CTRL Dimming Range | DC mode: 25–200% ILED; PWM mode: >100:1 dynamic range; supports precise brightness control in human-centric lighting |
| Thermal Resistance | θJA = 82°C/W (SO-8); requires ≥2 oz copper pad and thermal vias for 1A operation at TA ≤ +85°C |
| Protection Features | Built-in open-LED shutdown (SW forced low, SET rises to VIN); no external fault circuitry needed |
Pinout & Package
AP8802SG-13 uses the SO-8 package (3.95mm × 4.95mm × 1.50mm), with exposed pad internally connected to substrate (not power GND). Thermal performance depends on soldering the EP to a ≥25mm² GND copper area with ≥4 thermal vias.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SET) | Current sense reference | Voltage across RSET sets nominal LED current; 200mV threshold ensures stable regulation |
| 2 (GND) | Analog ground | Reference for SET, CTRL, and internal circuits; must be low-impedance path to PCB GND plane |
| 3 (NC) | No connection | Unbonded die pad; leave unconnected per manufacturer recommendation |
| 4 (VIN) | Power input | 8–48V supply input; requires local 2.2–4.7µF ceramic bypass capacitor near pin |
| 5 (SW) | Power switch node | Drives external inductor/diode; track length must be minimized to reduce EMI and switching losses |
| 6 (SW) | Power switch node | Dual-SW pin configuration improves current handling and reduces parasitic inductance |
| 7 (GND) | Power ground | Dedicated return path for high-current SW node; connect directly to GND plane under IC |
| 8 (CTRL) | Dimming & enable control | 0.2V or lower disables output; 0.3–2.5V enables analog dimming; PWM input enables digital brightness control |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 1A MOSFET with 0.65Ω RDS(ON) | Eliminates external switch, reduces BOM count, and simplifies layout for space-constrained LED drivers |
| Programmable constant current via RSET | Enables precise LED current tuning across production batches without trimming or calibration |
| Single-pin dual-mode dimming (PWM/DC) | Reduces system-level GPIO count and eliminates need for separate analog DAC or PWM generator |
| Built-in open-LED protection | Prevents overvoltage stress on SW node during LED string failure-no external Zener or comparator required |
| SO-8, SO-8EP, and U-DFN3030-10 package options | Allows thermal and board-area trade-offs: SO-8 for legacy compatibility, U-DFN3030-10 for highest power density |
Applications
| Commercial Lighting | LCD Backlighting |
|---|---|
|
Use Scenario: Linear LED troffer fixtures in office ceilings requiring uniform brightness across 8–12 series LEDs powered from 24V or 48V DC distribution. IC Role / Device Role / Timing Role: Constant-current buck controller regulating LED string current independent of forward voltage variation and line fluctuations. Use Value: Eliminates ballast resistors, achieves ±8% current matching across LEDs, and maintains >90% efficiency at full load. |
Use Scenario: Edge-lit 10–15" LCD panels in point-of-sale terminals, where thin mechanical profile and low EMI are mandatory. IC Role / Device Role / Timing Role: High-frequency (≥500kHz) LED driver enabling small 47µH inductors and minimizing conducted emissions near display timing circuits. Use Value: Reduces total solution height to <1.5mm and meets CISPR-22 Class B radiated emission limits without shielding. |
| Appliance Interior Lighting | Architectural Accent Lighting |
|
Use Scenario: Under-cabinet LED strips in smart kitchen appliances, operating from 12V or 24V rail with dimming synchronized to user interface. IC Role / Device Role / Timing Role: Analog-dimming LED driver accepting 0–3.3V microcontroller output directly on CTRL pin for seamless UI integration. Use Value: Achieves smooth 25–100% brightness scaling without flicker, with <1% current drift over temperature (–40°C to +85°C). |
Use Scenario: Low-voltage (12–24V) linear LED modules embedded in aluminum extrusions for retail display lighting. IC Role / Device Role / Timing Role: Thermally robust LED driver in SO-8EP package delivering 1A with θJA = 45°C/W for passive heatsink-only cooling. Use Value: Enables 100% duty-cycle operation at ambient up to +70°C without derating or fan assistance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar constant-current LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AL8862SP-13 | Higher 60V max input, 1.2A output, but requires external MOSFET and sense resistor; no integrated switch | Suitable for higher-voltage industrial signage where input exceeds 48V; adds complexity and footprint | Choose when input >48V or when adjustable overcurrent limit is required beyond fixed 1A |
| MPQ4425AGU-AEC1-P | Automotive-grade AEC-Q100 qualified, 2.5A output, 500kHz max fSW, integrated soft-start and spread-spectrum | Targeted at automotive interior lighting with stringent EMI and reliability requirements | Choose only if AEC-Q100 qualification, higher current, or spread-spectrum EMI reduction are mandatory |
Compared with AL8862SP-13 and MPQ4425AGU-AEC1-P, AP8802SG-13 offers lowest BOM count and smallest PCB area for 1A, 48V-max LED driving, with proven thermal performance in SO-8 and native open-LED protection-making it optimal for cost-sensitive commercial and architectural lighting.
Availability
AP8802SG-13 is available at Aetrix Electronics and suitable for commercial lighting, LCD backlighting, and appliance interior lighting requiring stable component supply, long-term lifecycle support, and RoHS-compliant "Green" packaging.
Supply support for AP8802SG-13 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 for power management, signal integrity, and connectivity applications.
The AP8802 belongs to Diodes' LED driver product line, designed specifically for high-efficiency, constant-current DC/DC conversion in general-purpose lighting systems where simplicity, reliability, and thermal efficiency are prioritized over automotive or ultra-high-voltage requirements.
FAQ
What is the minimum RSET value for 1A output current?
The AP8802SG-13 sets nominal LED current using ILED ≈ 0.2V / RSET. For 1A output, RSET = 0.2Ω. The datasheet confirms stable operation down to 0.2Ω with ≤8% current deviation across input voltage and temperature. Lower values risk exceeding internal current limit and thermal constraints in SO-8.
Can AP8802SG-13 drive a single LED at 48V input?
Yes, but with reduced efficiency and increased thermal stress. At 48V input and 3V LED VF, duty cycle drops to ~7%, increasing switching losses. Figure 8 shows ±10% current deviation at 48V with 1 LED; Figure 22 recommends U-DFN3030-10 package for 48V/1A operation to maintain TC < 70°C.
Does CTRL pin require a pull-up or pull-down resistor?
No external resistor is required. The CTRL pin has an internal ~50kΩ impedance and accepts direct connection to MCU GPIO or open-drain driver. For PWM dimming, an external NPN transistor is recommended to avoid overvoltage; for analog dimming, a 3.3kΩ series resistor protects against accidental overdrive from microcontroller outputs.
How does open-LED protection behave during fault conditions?
When the LED string opens, the AP8802SG-13 halts switching, pulls SW low, and allows SET voltage to rise to VIN. No destructive voltage appears at SW-maximum observed is VIN + 0.7V (diode clamp). This behavior is verified in Figure 24 and eliminates need for external overvoltage clamping components.
AP8802SG-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- DC DC Regulator
- Topology:
- Step-Down (Buck)
- Internal Switch(s):
- Yes
- Number of Outputs:
- 1
- Voltage - Supply (Min):
- 8V
- Voltage - Supply (Max):
- 48V
- Voltage - Output:
- -
- Current - Output / Channel:
- 1A (Switch)
- Frequency:
- 700kHz
- Dimming:
- Analog, PWM
- Applications:
- Backlight, Lighting
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOP
AP8802SG-13 FAQ
1.How can I place an order for AP8802SG-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP8802SG-13 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 AP8802SG-13 reliable?
The price and inventory of AP8802SG-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP8802SG-13 is usually 5 days.
3.What payment methods are accepted for AP8802SG-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP8802SG-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP8802SG-13?
AP8802SG-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP8802SG-13 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 AP8802SG-13?
For technical support, including AP8802SG-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP8802SG-13 requirements.
6.How does Aetrix verify that AP8802SG-13 is sourced from the original manufacturer or authorized distributors?
All AP8802SG-13 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 AP8802SG-13 meets industry standards.
7.What is the process for return or replacement of AP8802SG-13?
All AP8802SG-13 units undergo pre-shipment inspection (PSI). If there is an issue with AP8802SG-13, 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 AP8802SG-13 part is unused and in its original packaging.
Return procedure for AP8802SG-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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