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Diodes Incorporated AP5725FDCG-7
- Part No.:
- AP5725FDCG-7
- Manufacturer:
- Diodes Incorporated
- Category:
- LED Drivers
- Package:
- 6-UDFN Exposed Pad
- Datasheet:
-
AP5725FDCG-7.pdf
- Description:
- IC LED DRVR RGLTR PWM 750MA 6DFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
AP5725FDCG-7 from Diodes Incorporated is a white LED step-up DC/DC converter IC with integrated 0.95Ω MOSFET, designed to drive 2–6 series-connected LEDs from a 2.7–5.5V Li-ion input. It delivers constant current up to 30mA with 0.25V feedback reference, operates at 1.2MHz switching frequency, and includes OVP, thermal shutdown, and soft-start-used in portable backlighting applications including cellular phones and digital cameras.
For engineers reviewing the AP5725FDCG-7 datasheet, AP5725FDCG-7 pinout, AP5725FDCG-7 application, or AP5725FDCG-7 equivalent, key selection criteria include its 0.25V FB threshold for precision current setting, DFN2020C-6 package thermal resistance (θJA = 200°C/W), 30V OVP threshold, and compatibility with PWM/DC dimming control schemes in space-constrained handheld devices.
Technical Context
The AP5725FDCG-7 implements a current-mode boost controller with internal 1.2MHz oscillator, ramp generator, and comparator-based feedback loop referenced to 0.25V. Its control logic manages MOSFET gate drive, soft-start timing, and overvoltage protection activation via the OVP pin.
It supports both single-string and multi-string parallel LED configurations using one feedback node, enabling uniform current distribution without ballast resistors. Protection features include under-voltage lockout (2.2–2.4V), thermal shutdown, and cycle-by-cycle current limiting (750mA peak switch current).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7V to 5.5V - compatible with single-cell Li-ion battery operation across full discharge curve |
| Feedback Reference Voltage | 0.25V ±0.025V - enables high-efficiency current sensing with low-power RSET resistor |
| Switching Frequency | 1.2MHz typical - allows use of compact 22μH inductors and 1μF ceramic capacitors |
| OVP Threshold | 30V ±4V - protects SW and OVP pins during LED open-circuit fault conditions |
| MOSFET RDS(on) | 0.95Ω max - reduces conduction loss in high-current boost path |
| Quiescent Current | 500μA typical - minimizes standby power draw in battery-powered systems |
| Thermal Resistance θJA | 200°C/W - defined for DFN2020C-6 on FR-4 with minimum pad layout per AP02001 |
Pinout & Package
AP5725FDCG-7 is housed in a 2.0mm × 2.0mm × 0.65mm DFN2020C-6 package with exposed thermal pad (pin 6), optimized for low-profile portable designs requiring efficient heat dissipation in minimal board area.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SW) | Power Switch Node | Connects to inductor and Schottky diode anode; high dv/dt node requiring minimized trace area to reduce EMI |
| 2 (VIN) | Input Supply | Accepts 2.7–5.5V input; must be bypassed locally with ≥1μF ceramic capacitor to suppress input noise |
| 3 (OVP) | Over-Voltage Sense Input | Monitors output voltage via resistive divider; triggers shutdown if >30V to protect internal MOSFET and external components |
| 4 (GND) | Power Ground | Primary return path for input, output, and internal circuitry; connects to thermal pad for heat dissipation |
| 5 (FB) | Current Sense Feedback | References 0.25V; connects to cathode of lowest LED + RSET to set ILED = 0.25V/RSET |
| 6 (EN) | Enable Control | Active-high logic input; drives converter ON when >1.5V, OFF when <0.4V; must not float - tie to VIN if always-on operation required |
Key Features
| Feature | Design Value |
|---|---|
| High Efficiency Boost Topology | 84% typical efficiency at 25mA/6-LED load - achieved via low-RDS(on) MOSFET and 1.2MHz switching minimizing inductor/core losses |
| Integrated Soft-Start | Prevents inrush current and output overshoot during startup by gradually increasing duty cycle - eliminates need for external timing components |
| Multi-String LED Support | Single FB node accommodates parallel strings of equal LED count - maintains uniform brightness without per-string current regulation |
| Open-Circuit Fault Protection | OVP pin activates shutdown when output exceeds 30V - prevents SW pin overvoltage during LED disconnection or failure |
| Green Packaging | DFN2020C-6 meets RoHS Directive 2002/95/EC with Br/Sb-free molding compound and lead-free finish |
Applications
| Cellular Phone Backlighting | Digital Camera LCD Backlight |
|---|---|
Use Scenario: Driving 4–6 white LEDs for main display backlight in GSM/UMTS smartphones with single Li-ion cell supply. IC Role / Device Role / Timing Role: Constant-current boost controller regulating LED string current via 0.25V FB reference and PWM-dimmed EN pin. Use Value: Enables uniform brightness across display while maintaining >84% efficiency and sub-1mm profile with DFN2020C-6 package. | Use Scenario: Powering high-brightness WLED array behind TFT-LCD viewfinder and rear screen in compact digital cameras. IC Role / Device Role / Timing Role: Step-up converter delivering stable 25mA per string with thermal shutdown protection during extended video capture. Use Value: Supports rapid PWM dimming (<2kHz) and DC voltage dimming without external op-amps, reducing BOM count and PCB area. |
| MP3 Player OLED Display | GPS Receiver Keypad Illumination |
Use Scenario: Driving small 2–3 LED string for monochrome OLED status display in portable audio players. IC Role / Device Role / Timing Role: Low-quiescent-current (500μA) boost IC enabling long battery life with automatic enable via VIN tie. Use Value: Delivers precise current control down to 5mA (RSET = 50Ω) with minimal dropout - critical for low-power always-on indicators. | Use Scenario: Providing adjustable keypad backlight in automotive-grade GPS units operating across -40°C to +85°C ambient. IC Role / Device Role / Timing Role: Temperature-stable LED driver with ±0.025V FB drift over -40°C to +125°C junction range. Use Value: Maintains consistent illumination intensity across temperature extremes using factory-trimmed 0.25V reference and robust OVP threshold (26–34V). |
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 |
|---|---|---|---|
| AP3606FDCG-7 | Lower 0.2V FB reference; 1.5MHz switching; no OVP pin | Lacks open-circuit protection; requires external OVP circuit for safety-critical backlighting | Select when higher switching frequency and lower FB voltage justify added protection complexity |
| AL8862SP-7 | External MOSFET drive; 500kHz operation; 0.26V FB | Requires external high-side switch and larger magnetics; better thermal handling for >30mA loads | Choose for higher output power or discrete FET optimization in cost-sensitive designs |
Compared with AP3606FDCG-7 and AL8862SP-7, AP5725FDCG-7 uniquely integrates OVP protection and fits ultra-compact layouts via DFN2020C-6, making it optimal for space-constrained, safety-aware portable backlighting where reliability and footprint are prioritized over maximum current scalability.
Availability
AP5725FDCG-7 is available at Aetrix Electronics and suitable for cellular phone backlighting, digital camera LCD illumination, and GPS receiver keypad lighting requiring stable component supply, RoHS-compliant packaging, and DFN-level miniaturization.
Supply support for AP5725FDCG-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 manufacturer of discrete semiconductors and analog ICs, specializing in high-performance, energy-efficient solutions for consumer, computing, and industrial markets.
The AP5725 belongs to Diodes' LED driver product line, engineered specifically for portable device backlighting with emphasis on integration, thermal efficiency, and fault protection in ultra-thin form factors.
FAQ
What is the recommended inductor value and type for AP5725FDCG-7?
A 22μH shielded SMD inductor with 0.51A saturation current and low DCR is recommended, such as Wurth 744031220 or Taiyo Yuden NR4012. Core material must support low losses at 1.2MHz; ferrite or metal alloy types are preferred to minimize AC resistance and maintain efficiency above 84%.
Can AP5725FDCG-7 drive more than six LEDs?
No - the AP5725FDCG-7 is rated for 2–6 LEDs in series from a 2.7–5.5V input. Driving more than six LEDs would exceed its 30V OVP threshold and risk triggering protection or damaging the internal MOSFET. For higher LED counts, a cascaded or higher-output-voltage driver is required.
How does dimming work with the EN pin, and what PWM frequency range is supported?
Applying a PWM signal to the EN pin toggles the AP5725FDCG-7 between full-on and shutdown states, producing average LED current proportional to duty cycle. The datasheet specifies reliable operation below 2kHz; frequencies above this may cause inconsistent startup due to insufficient soft-start time between cycles.
Is the DFN2020C-6 package thermally adequate for continuous 30mA operation?
Yes - with proper PCB layout (minimum 1.59mm × 0.9mm thermal pad connected to solid ground plane), the DFN2020C-6 achieves θJA = 200°C/W, limiting junction rise to ~15°C at 30mA/3.6V input. Thermal shutdown activates only above 150°C junction, providing ample margin under typical handheld operating conditions.
AP5725FDCG-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 6-UDFN Exposed Pad
- 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):
- 2.7V
- Voltage - Supply (Max):
- 5.5V
- Voltage - Output:
- 26V
- Current - Output / Channel:
- 750mA (Switch)
- Frequency:
- 1.2MHz
- Dimming:
- PWM
- Applications:
- Backlight
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- U-DFN2020-6 (Type C)
AP5725FDCG-7 FAQ
1.How can I place an order for AP5725FDCG-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP5725FDCG-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 AP5725FDCG-7 reliable?
The price and inventory of AP5725FDCG-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP5725FDCG-7 is usually 5 days.
3.What payment methods are accepted for AP5725FDCG-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP5725FDCG-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP5725FDCG-7?
AP5725FDCG-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP5725FDCG-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 AP5725FDCG-7?
For technical support, including AP5725FDCG-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP5725FDCG-7 requirements.
6.How does Aetrix verify that AP5725FDCG-7 is sourced from the original manufacturer or authorized distributors?
All AP5725FDCG-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 AP5725FDCG-7 meets industry standards.
7.What is the process for return or replacement of AP5725FDCG-7?
All AP5725FDCG-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP5725FDCG-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 AP5725FDCG-7 part is unused and in its original packaging.
Return procedure for AP5725FDCG-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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