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Diodes Incorporated AP8801SG-13
- Part No.:
- AP8801SG-13
- Manufacturer:
- Diodes Incorporated
- Category:
- LED Drivers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AP8801SG-13.pdf
- Description:
- IC LED DRVR RGLTR PWM 500MA 8SOP
- Quantity:
- Payment:
- Shipping:
Inventory:27,086
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Product details
Overview
AP8801SG-13 from Diodes Incorporated is a constant-current step-down DC/DC converter IC designed to drive up to 13 series-connected LEDs from 8V–48V input, delivering up to 500mA output current with 92% peak efficiency and 700kHz switching frequency. It supports PWM and analog dimming via the CTRL pin and integrates open-circuit LED protection for commercial lighting and backlight systems.
For engineers reviewing the AP8801SG-13 datasheet, AP8801SG-13 pinout, AP8801SG-13 application, or AP8801SG-13 equivalent, key selection criteria include input voltage range (8–48V), dimming interface compatibility (0.3–2.5V analog / 0–500Hz PWM), thermal resistance (88°C/W for SO-8), RDS(ON) (0.70–1.15Ω), and built-in soft-start via external CTRL capacitor.
Technical Context
The AP8801SG-13 employs a current-mode buck topology with an integrated 500mA MOSFET switch and internal 1.25V reference. Its SET pin senses voltage drop across an external resistor to regulate LED current with ±8% accuracy over input voltage and temperature.
CTRL pin operation supports three modes: shutdown (<0.2V), analog dimming (0.3–2.5V, 25–200% ILED), and PWM dimming (0–500Hz, 8-bit resolution). The device features automatic open-LED fault detection that halts switching and clamps SW to GND, preventing overvoltage stress.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | Up to 500mA continuous; set precisely via external RSET (e.g., 0.56Ω → 357mA nominal). |
| Input Voltage Range | 8V to 48V DC; enables direct use with 12V/24V/48V industrial and architectural power rails. |
| Switching Frequency | Up to 625kHz (typical); allows compact 68–100µH inductors and reduces EMI filtering requirements. |
| Efficiency | Up to 92% at 12V input and 350mA load; minimizes thermal load in enclosed lighting fixtures. |
| Dimming Interface | CTRL pin accepts 0.3–2.5V analog (25–200% ILED) or 0–500Hz PWM (8-bit resolution); no external driver needed. |
| Thermal Resistance | 88°C/W (Junction-to-Ambient, SO-8 package); requires ≥2 oz copper pad + thermal vias for >350mA continuous operation. |
| Protection Features | Built-in open-LED shutdown (SW pulled low, SET rises to VIN); no external fault circuitry required. |
Pinout & Package
AP8801SG-13 uses the SO-8 package (4.90mm × 6.00mm, 1.45mm height) with exposed thermal pad per Diodes Inc. outline DW-008A. Pin 1 is NC; Pins 2 & 5 are SW (switch node); Pin 3 is CTRL; Pin 4 is SET; Pin 6 is VIN; Pins 7 & 8 are GND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SW (Pins 2, 5) | Power Switch Node | Connects to inductor and freewheeling diode; track length must be minimized to reduce EMI and switching losses. |
| CTRL (Pin 3) | Dimming & Shutdown Control | 0.2V or lower forces standby mode; 0.3–2.5V sets analog current; PWM toggles full on/off; 50kΩ input impedance. |
| SET (Pin 4) | Current Sense Reference | Voltage between VIN and SET is regulated to 200mV (±8%); defines ILED = 0.2V / RSET. |
| VIN (Pin 6) | Power Input | 8–48V supply input; requires local 2.2–4.7µF ceramic bypass capacitor near pin. |
| GND (Pins 7, 8) | Power Ground | Dual ground pins reduce ground loop impedance; must connect to large copper pour and thermal vias for heat dissipation. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 500mA MOSFET | Eliminates external high-side switch; RDS(ON) = 0.70–1.15Ω ensures <1.2W conduction loss at 500mA. |
| Single-Pin Dimming (CTRL) | Unifies shutdown, analog dimming, and PWM control-reduces BOM count and PCB routing complexity. |
| Open-Circuit LED Protection | Auto-detects open string and disables switching without latch-up; prevents SW overvoltage and system failure. |
| Soft-Start via CTRL Capacitor | External capacitor (e.g., 10nF) adds ~2ms delay; prevents inrush current and stabilizes startup in multi-LED arrays. |
| Green Packaging | SO-8 package is fully RoHS 3 compliant, halogen-free (<900ppm Br+Cl), antimony-free (<1000ppm), lead-free. |
Applications
| Commercial Lighting | Small LCD Backlight |
|---|---|
|
Use Scenario: Indoor office ceiling panels using 6–10 white LEDs in series powered from 24V DC bus. IC Role / Device Role / Timing Role: Constant-current buck controller regulating LED string current while rejecting input ripple and enabling DALI-compatible dimming. Use Value: Delivers uniform brightness across all LEDs without ballast resistors; 92% efficiency reduces heatsink size by 35% vs. linear drivers. |
Use Scenario: 7-inch industrial HMI display with edge-lit white LED array requiring flicker-free dimming down to 1% brightness. IC Role / Device Role / Timing Role: Primary LED driver with analog dimming (0.3–2.5V CTRL) synchronized to microcontroller DAC output. Use Value: Achieves 8.33:1 analog dimming range (24–200% ILED) and <1% current variation across 10–40°C ambient. |
| Appliance Interior Lighting | Architectural Detail Lighting |
|
Use Scenario: Refrigerator interior light using 3-series 20mA LEDs driven from 12V SMPS rail with occupancy-sensor-triggered PWM dimming. IC Role / Device Role / Timing Role: Low-quiescent-current (78μA) LED driver with fast-response PWM dimming (≤500Hz) controlled by MCU GPIO. Use Value: Enables <100ms fade-on/fade-off via CTRL pin capacitance tuning; standby current <10μA when CTRL <0.2V. |
Use Scenario: Outdoor façade accent lighting with 13-series high-CRI LEDs powered from 48V PoE++ infrastructure. IC Role / Device Role / Timing Role: High-input-voltage buck converter supporting long LED strings while maintaining ±5% current regulation over 8–48V input. Use Value: Eliminates need for intermediate 24V conversion stage; 700kHz switching allows <3mm² total passive area (inductor + caps). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AL8860W7-7 | Higher max input (60V), fixed 600kHz fSW, no analog dimming-CTRL only accepts PWM. | Preferred for 48V PoE-powered signage where analog dimming is unnecessary and higher input margin is critical. | Select AL8860W7-7 when input may exceed 48V or when only digital dimming is required; verify thermal design for 600kHz operation. |
| MPQ4425AGU-AEC1-P | Automotive-grade AEC-Q100, 2.5A switch, but requires external MOSFET; no integrated switch. | Suitable for automotive cabin lighting where qualification and higher current are mandatory, but increases BOM and layout complexity. | Choose MPQ4425AGU-AEC1-P only for AEC-Q100-compliant designs needing >500mA; AP8801SG-13 offers lower cost and simpler layout for industrial use. |
Compared with AL8860W7-7 and MPQ4425AGU-AEC1-P, the AP8801SG-13 uniquely combines integrated 500mA switching, analog+PWM dimming on one pin, and SO-8 thermal performance-making it optimal for cost-sensitive, non-automotive LED lighting where design simplicity and dimming flexibility are prioritized.
Availability
AP8801SG-13 is available at Aetrix Electronics and suitable for commercial lighting, small LCD backlight, and appliance interior lighting requiring stable component supply, consistent parametric performance, and RoHS 3-compliant packaging.
Supply support for AP8801SG-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 manufacturer specializing in discrete, analog, and mixed-signal solutions for power management, signal integrity, and connectivity applications.
The AP8801 belongs to Diodes' LED driver product line, engineered specifically for efficient, reliable constant-current driving of medium-power LED strings in industrial and commercial lighting systems-not general-purpose DC/DC conversion.
FAQ
What is the minimum input voltage required for stable operation of AP8801SG-13?
The AP8801SG-13 requires a minimum input voltage of 8.0V to maintain regulation across its full 500mA output range. Below this, the internal control loop cannot sustain sufficient duty cycle to drive the LED string, resulting in current droop or dropout. Operation at 7.5V may yield reduced current (e.g., ~400mA at 25°C) but is outside specified limits and not guaranteed across temperature or unit variance.
Can AP8801SG-13 drive a single LED, and what is the lowest forward voltage it supports?
Yes-the AP8801SG-13 can drive a single LED, provided its forward voltage (VF) is ≤48V. With a 12V input and typical 3.2V white LED, the device operates at ~27% duty cycle. Minimum VF is not specified, but practical lower limit is ~2.5V (ensuring ≥0.5V headroom for RDS(ON) and diode drop); below this, regulation accuracy degrades due to reduced control margin.
How does the AP8801SG-13 handle thermal overload, and what is the recommended PCB layout for 500mA operation?
The AP8801SG-13 has no thermal shutdown circuit; instead, safe operation relies on derating per Figure 20. At 25°C ambient, maximum power dissipation is 1.2W (SO-8). For 500mA at 12V input, PD ≈ 0.3W-well within limit-but at 48V input, PD ≈ 1.1W. Recommended layout: 2oz copper pad (≥10mm²), 4×0.3mm thermal vias to inner ground plane, and short SW/GND traces to minimize parasitic inductance.
Is the AP8801SG-13 pin-compatible with other Diodes LED drivers like AP8802 or AL8861?
No-AP8801SG-13 is not pin-compatible with AP8802 (different pinout: CTRL and SET swapped) or AL8861 (8-pin MSOP but different function mapping: EN instead of NC, different SW/GND arrangement). Substitution requires schematic and layout revision. Diodes explicitly states "NOT RECOMMENDED FOR NEW DESIGN USE AL8860 and AL8861" in the datasheet, confirming AP8801 is legacy but still supported.
AP8801SG-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:
- Not For New Designs
- 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:
- 500mA (Switch)
- Frequency:
- 625kHz
- Dimming:
- Analog, PWM
- Applications:
- Backlight, Lighting
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOP
AP8801SG-13 FAQ
1.How can I place an order for AP8801SG-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP8801SG-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 AP8801SG-13 reliable?
The price and inventory of AP8801SG-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP8801SG-13 is usually 5 days.
3.What payment methods are accepted for AP8801SG-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP8801SG-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP8801SG-13?
AP8801SG-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP8801SG-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 AP8801SG-13?
For technical support, including AP8801SG-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP8801SG-13 requirements.
6.How does Aetrix verify that AP8801SG-13 is sourced from the original manufacturer or authorized distributors?
All AP8801SG-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 AP8801SG-13 meets industry standards.
7.What is the process for return or replacement of AP8801SG-13?
All AP8801SG-13 units undergo pre-shipment inspection (PSI). If there is an issue with AP8801SG-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 AP8801SG-13 part is unused and in its original packaging.
Return procedure for AP8801SG-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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