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Diodes Incorporated AP5724FDCG-7
- Part No.:
- AP5724FDCG-7
- Manufacturer:
- Diodes Incorporated
- Category:
- LED Drivers
- Package:
- 6-UDFN Exposed Pad
- Datasheet:
-
AP5724FDCG-7.pdf
- Description:
- IC LED DRVR RGLTR PWM 750MA 6DFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
AP5724FDCG-7 from Diodes Incorporated is a white LED step-up DC/DC converter with constant-current regulation, designed to drive 2–6 series-connected LEDs from a 2.7–5.5V Li-ion input. It integrates a 0.95Ω MOSFET switch, operates at 1.2MHz, and uses a 0.1V feedback reference for precise current setting (e.g., 25mA via 4Ω RSET). It targets compact portable backlighting in handheld consumer devices.
For engineers reviewing the AP5724FDCG-7 datasheet, AP5724FDCG-7 pinout, AP5724FDCG-7 application, or AP5724FDCG-7 equivalent, key selection criteria include its 1.2MHz switching frequency enabling small 22µH inductors, integrated OVP and thermal shutdown, U-DFN2020-6 package footprint, and 0.1V VFB for low-loss current sensing.
Technical Context
The AP5724FDCG-7 implements a current-mode boost controller with internal 1.2MHz oscillator, ramp compensation, and comparator-based PWM control logic. Its 0.1V feedback reference directly sets LED current via external RSET, minimizing I²R loss and supporting high efficiency across 5–30mA output ranges.
It features dual protection architecture: overvoltage detection via dedicated OVP pin (threshold 26–34V) and thermal shutdown triggered above 150°C junction temperature. The EN pin enables hard on/off control with 1.5V logic-high threshold and <0.4V logic-low threshold, while UVLO activates below 2.4V with 85mV hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Topology | Current-mode step-up DC/DC converter with integrated 0.95Ω MOSFET switch |
| Input Voltage Range | 2.7V to 5.5V - supports single-cell Li-ion battery operation without pre-regulation |
| Switching Frequency | 1.2MHz ±0.2MHz - enables use of 22µH inductor and 1µF ceramic capacitors for minimal board area |
| Feedback Reference | 0.1V ±10mV - allows accurate LED current setting (e.g., 25mA with 4Ω resistor) and reduces power loss in RSET |
| OVP Threshold | 30V typical - protects SW and OVP pins during LED open-circuit fault conditions |
| Efficiency | 84% typical at 25mA/6-LED load - achieved via low-RDS(on) switch and optimized gate drive |
| Operating Temperature | −40°C to +125°C junction - validated for portable device ambient environments up to +85°C |
Pinout & Package
AP5724FDCG-7 is housed in a 2.0mm × 2.0mm × 0.6mm U-DFN2020-6 package with exposed thermal pad (pin 4), optimized for space-constrained portable PCBs and thermal performance in thin form factors.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SW) | Power Switch Node | Connects to inductor and Schottky diode anode; requires minimized trace area to reduce EMI radiation |
| 2 (VIN) | Input Supply | Accepts 2.7–5.5V input; must be bypassed locally with ≥1µF X5R/X7R ceramic capacitor |
| 3 (OVP) | Over-Voltage Sense Input | Monitors output voltage via resistive divider; triggers shutdown if >30V detected |
| 4 (GND) | Power Ground | Primary return path for switch current and IC ground; connects to thermal pad for heat dissipation |
| 5 (FB) | Current-Sense Feedback | 0.1V reference node; connects to cathode of lowest LED and RSET to set ILED = 0.1V/RSET |
| 6 (EN) | Enable Control | Logic-level input (1.5V min high); must not float - tie to VIN for automatic startup |
Key Features
| Feature | Design Value |
|---|---|
| High-frequency switching | 1.2MHz operation enables 22µH inductors and 1µF ceramics, reducing solution size by >40% vs. 500kHz converters |
| Low-feedback reference | 0.1V VFB minimizes RSET power loss - e.g., only 250µW dissipated at 25mA vs. 2.5mW with 1V reference |
| Integrated protections | Combines UVLO (2.4V), OVP (30V), thermal shutdown (150°C), and current limit (750mA) in single die |
| Precision dimming support | EN pin accepts PWM signals <2kHz for direct brightness control; FB pin also supports analog dimming via DC voltage injection |
| Green packaging | U-DFN2020-6 package uses halogen-free, antimony-free molding compound and lead-free terminations per RoHS 2 |
Applications
| Cellular Phones | Digital Cameras |
|---|---|
Use Scenario: Backlighting for 3.5-inch AMOLED display requiring uniform brightness across 4-series white LEDs. IC Role / Device Role / Timing Role: Constant-current boost controller regulating 20mA per string with 1.2MHz switching to minimize EMI near RF sections. Use Value: Eliminates ballast resistors, reduces BOM count by 4 components per display, and maintains ±3% current matching across temperature. |
Use Scenario: Flash LED driver for 12MP image sensor, delivering 300mA pulsed current to dual parallel strings. IC Role / Device Role / Timing Role: High-efficiency step-up converter with fast enable/disable (EN pin) synchronized to shutter timing for precise flash duration. Use Value: Achieves 84% efficiency at 300mA peak, limiting thermal rise in sealed camera housing and extending battery life per shot. |
| GPS Receivers | MP3 Players |
Use Scenario: Status indicator backlight using 2-series white LEDs powered from 3.7V Li-ion battery with dynamic voltage sag. IC Role / Device Role / Timing Role: Wide-input boost regulator maintaining stable 25mA LED current despite input dropping to 2.7V during battery discharge. Use Value: Ensures consistent visibility across full battery cycle without brightness fade or flicker due to UVLO hysteresis (85mV). |
Use Scenario: OLED screen backlight in 2.4-inch portable audio player with space-limited PCB layout. IC Role / Device Role / Timing Role: Compact U-DFN2020-6 LED driver enabling 2.0mm × 2.0mm solution footprint and thermal pad soldering for passive cooling. Use Value: Reduces total solution area by 35% versus SOT26 alternatives while sustaining 84% efficiency at 15mA output. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar white LED boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP3606FDCG-7 | Lower 0.65Ω RDS(on), 1.5MHz switching, but no OVP pin - relies on external circuitry | Lacks integrated overvoltage protection; requires external Zener/clamp for open-circuit LED safety | Preferred when board space allows external OVP and higher efficiency at >30mA loads is critical |
| AL8862Q-7 | Higher 0.15V VFB, 600kHz switching, automotive-grade AEC-Q100 qualification | Designed for automotive infotainment displays; larger SOT23-6 footprint and lower switching frequency | Selected only for automotive programs requiring AEC-Q100 compliance and higher VFB tolerance to noise |
Compared with AP5724FDCG-7, AP3606FDCG-7 trades integrated OVP for lower conduction loss and higher frequency, while AL8862Q-7 sacrifices compactness and efficiency for automotive qualification - making AP5724FDCG-7 optimal for cost-sensitive, space-constrained consumer portables needing self-contained protection.
Availability
AP5724FDCG-7 is available at Aetrix Electronics and suitable for cellular phones, digital cameras, GPS receivers, and MP3 players requiring stable component supply, RoHS-compliant packaging, and compact U-DFN2020-6 footprints.
Supply support for AP5724FDCG-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 power management, signal integrity, and precision analog solutions for high-volume consumer and industrial markets.
The AP5724 belongs to Diodes' white LED driver product line, engineered specifically for efficient, compact, and protected backlighting in battery-powered portable electronics with stringent size and thermal constraints.
FAQ
What is the minimum input voltage required for AP5724FDCG-7 to start switching?
The AP5724FDCG-7 incorporates under-voltage lockout (UVLO) that disables operation below 2.2V and re-enables at 2.4V with 85mV hysteresis. Therefore, the minimum functional input voltage is 2.4V. Below this, the EN pin remains inactive and the internal MOSFET stays off, preventing erratic startup or brown-out behavior during Li-ion battery discharge.
Can AP5724FDCG-7 drive more than six LEDs in series?
No - the datasheet specifies a maximum of six LEDs in series due to the 34V absolute maximum rating on the OVP pin and the 30V typical OVP threshold. Driving seven or more white LEDs (≥3.2V each) would exceed 22.4V forward voltage, leaving insufficient margin for output ripple and regulation headroom before triggering OVP shutdown.
How does the 0.1V feedback voltage improve system efficiency?
The 0.1V VFB reduces power dissipation in the current-sense resistor RSET by a factor of ten versus conventional 1.0V references. For a 25mA LED current, power loss drops from 25mW (with 1V) to just 2.5mW (with 0.1V), directly improving overall conversion efficiency and minimizing thermal stress on the resistor and PCB.
Is thermal pad soldering required for AP5724FDCG-7 in U-DFN2020-6?
Yes - the exposed thermal pad (pin 4) is electrically connected to GND and serves as the primary heat dissipation path. Diodes' recommended pad layout specifies a 0.65mm × 0.65mm thermal pad with 4×0.25mm solder vias to inner ground planes. Omitting this compromises thermal resistance (θJA degrades from 200°C/W to >280°C/W), risking thermal shutdown above 85°C ambient.
AP5724FDCG-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:
- -
- 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)
AP5724FDCG-7 FAQ
1.How can I place an order for AP5724FDCG-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP5724FDCG-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 AP5724FDCG-7 reliable?
The price and inventory of AP5724FDCG-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP5724FDCG-7 is usually 5 days.
3.What payment methods are accepted for AP5724FDCG-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP5724FDCG-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP5724FDCG-7?
AP5724FDCG-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP5724FDCG-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 AP5724FDCG-7?
For technical support, including AP5724FDCG-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP5724FDCG-7 requirements.
6.How does Aetrix verify that AP5724FDCG-7 is sourced from the original manufacturer or authorized distributors?
All AP5724FDCG-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 AP5724FDCG-7 meets industry standards.
7.What is the process for return or replacement of AP5724FDCG-7?
All AP5724FDCG-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP5724FDCG-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 AP5724FDCG-7 part is unused and in its original packaging.
Return procedure for AP5724FDCG-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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