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Diodes Incorporated AP2553FDC-7
- Part No.:
- AP2553FDC-7
- Manufacturer:
- Diodes Incorporated
- Package:
- 6-UDFN Exposed Pad
- Datasheet:
-
AP2553FDC-7.pdf
- Description:
- IC PWR SWITCH P-CHANNEL 1:1 6DFN
- Quantity:
- Payment:
- Shipping:
Inventory:9,410
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Product details
Overview
AP2553FDC-7 from Diodes Incorporated is a single-channel, active-high enable, precision adjustable current-limited high-side power switch in U-DFN2020-6 (Type C) package. It delivers up to 2.1A continuous load current, supports programmable current-limit threshold from 75mA to 2.36A (typ.) via external resistor RLIM (10kΩ–210kΩ), achieves ±6% accuracy at 1.632A with RLIM = 15kΩ, and features fast 2µs short-circuit response - optimized for USB-compliant hot-swap applications in LCD TVs and residential gateways.
For engineers reviewing the AP2553FDC-7 datasheet, AP2553FDC-7 pinout, AP2553FDC-7 application, or AP2553FDC-7 equivalent, key selection criteria include active-high EN logic, latch-off behavior under over-current (AP2553A variant), reverse-current blocking during shutdown, 7ms FAULT deglitch, and thermal/UVLO/over-voltage protection - all validated for 2.7V–5.5V input operation and -40°C to +85°C ambient range.
Technical Context
The AP2553FDC-7 implements a high-side N-channel MOSFET driver with integrated slew-rate control, current-sense FET (no external sense resistor), and dual-deglitched FAULT reporting (7ms blanking for over-current, 3–6ms for reverse-voltage). Its UVLO triggers at 2.4V (rising) with 25mV hysteresis, ensuring robust hot-plug sequencing.
It provides reverse-voltage protection via comparator trip at 95–190mV (VOUT–VIN), limits reverse current to 0.72A at 200mV differential, and incorporates thermal shutdown at +160°C (or +140°C under sustained current limit), with +20°C hysteresis for recovery.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Current-Limit Range | 75mA to 2365mA (typ.), set by external RLIM resistor (10kΩ–210kΩ); enables precise system-level current budgeting. |
| Current-Limit Accuracy | ±6% at 1.632A (RLIM = 15kΩ); ensures predictable fault margin without calibration. |
| Short-Circuit Response | 2µs (typ.); limits energy dissipation during hard shorts, preserving downstream components. |
| Enable Logic | Active-high (EN pin); simplifies interface with 3.3V/5V microcontrollers and PMICs without level-shifting. |
| RDS(ON) | 80–105mΩ (typ., U-DFN2020-6, TJ = +25°C); minimizes conduction loss and self-heating at 2.1A. |
| FAULT Output | Open-drain, active-low, with 7ms deglitch; prevents false trips from transient surges, requires no external RC. |
| Input Voltage Range | 2.7V to 5.5V; compatible with USB 2.0/3.0 VBUS, single-cell Li-ion, and industrial 3.3V/5V rails. |
Pinout & Package
AP2553FDC-7 is housed in a 2.0mm × 2.0mm, 0.65mm pitch, U-DFN2020-6 (Type C) thermally enhanced package with exposed pad (recommended connected to GND for improved heat dissipation).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN (Pin 6) | Power Input | Connects to 2.7V–5.5V supply; requires ≥0.1µF ceramic decoupling capacitor placed adjacent to pin. |
| GND (Pin 5) | Ground Reference | Primary ground return; must be connected to PCB ground plane and exposed pad for thermal performance. |
| EN (Pin 4) | Enable Control | Active-high logic input; drives internal driver when pulled ≥2.0V (VIH), disables switch when ≤0.8V (VIL). |
| FAULT (Pin 3) | Fault Reporting | Open-drain output asserted low during over-current, over-temperature, or reverse-voltage; 7ms deglitch built-in. |
| ILIM (Pin 2) | Current-Limit Programming | Sinks current to set ILIMIT threshold; accepts 10kΩ–210kΩ resistor (1% tolerance recommended). |
| OUT (Pin 1) | Switched Output | High-side switched output; provides reverse-current blocking when disabled and controlled rise/fall times. |
| Exposed Pad | Thermal & Mechanical | No internal connection; externally tied to GND for optimal θJA = 120°C/W and power dissipation up to 450mW @ TA = +70°C. |
Key Features
| Feature | Design Value |
|---|---|
| Latch-off on over-current | AP2553FDC-7 (A-version) disables permanently until EN toggle or power cycle - eliminates repeated fault cycling in persistent shorts. |
| Reverse-current blocking & limiting | Blocks reverse flow when disabled; limits reverse current to 0.72A at 200mV differential - protects upstream sources during backfeed. |
| Built-in soft-start | 3ms typical output rise time (tR) - suppresses inrush into large capacitive loads (e.g., 120µF USB outputs). |
| Integrated discharge path | 600Ω (normal disable), 1000Ω (latch-off mode); safely bleeds stored charge from output caps without external circuitry. |
| Robust ESD & safety certification | 15kV IEC 61000-4-2 (with external cap), UL Recognized (E322375), IEC 60950-1 CB certified - meets system-level compliance requirements. |
Applications
| USB Power Delivery Hubs | LCD TV Backlight Power Rails |
|---|---|
|
Use Scenario: Hot-plug detection and current-limited power switching for USB 3.0 hubs with multiple downstream ports. IC Role / Device Role / Timing Role: High-side power switch managing VBUS distribution, enforcing per-port current limits and responding to short circuits within 2µs. Use Value: Prevents host port shutdown during cable faults while maintaining USB-IF compliance for 120µF output capacitance and inrush control. |
Use Scenario: Isolated power rail switching for LED backlight drivers in 32–65" LCD TVs. IC Role / Device Role / Timing Role: Precision current-limited enable switch controlling backlight boost converter input, with reverse-current blocking during dimming transitions. Use Value: Eliminates need for discrete reverse-blocking diode and current-sense resistor, reducing BOM count and board area by >30%. |
| Residential Gateway PoE Ports | Desktop Docking Station USB-C PD |
|
Use Scenario: Secondary-side power switching for IEEE 802.3af/at-powered device interfaces in home gateways. IC Role / Device Role / Timing Role: Over-current protected high-side switch enabling PoE-powered peripherals (e.g., VoIP phones, cameras) with latch-off fail-safe. Use Value: Ensures uninterrupted operation of primary gateway functions during isolated port faults, with automatic isolation via FAULT-driven MCU interrupt. |
Use Scenario: Per-port VCONN and VBUS switching in multi-function USB-C docking stations supporting DisplayPort Alt Mode and data. IC Role / Device Role / Timing Role: Active-high enable switch providing independent current limiting (configurable per port) and reverse-current protection during cable insertion/removal. Use Value: Enables dynamic current allocation across ports while meeting USB-C specification requirements for fault containment and hot-swap robustness. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-side current-limited power switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP22653FDC-7 | Same footprint, higher RDS(ON) (120mΩ typ.), lower max current (1.5A), no reverse-current limiting. | Lacks reverse-voltage protection and reverse-current blocking - unsuitable where backfeed risk exists. | Select only if cost sensitivity outweighs reverse-protection needs and load current stays ≤1.5A. |
| TPS22965DCKR | TI part; active-high EN, 2.2A max, but no latch-off mode, 1.5ms FAULT blanking (vs. 7ms), no reverse-current limiting. | Requires external reverse-blocking diode and lacks deglitch robustness for noisy environments. | Prefer when system firmware handles fault recovery and reverse protection is implemented externally. |
Compared with AP22653FDC-7 and TPS22965DCKR, AP2553FDC-7 uniquely combines latch-off behavior, reverse-current limiting, and 7ms FAULT deglitch in a 2.0×2.0mm package - delivering superior fault containment for unattended consumer electronics without added discrete components.
Availability
AP2553FDC-7 is available at Aetrix Electronics and suitable for USB power delivery hubs, LCD TV backlight rails, residential gateways, and desktop docking stations requiring stable component supply, long-term lifecycle support, and RoHS-compliant green packaging.
Supply support for AP2553FDC-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-reliability power management, signal integrity, and protection solutions for consumer, industrial, and communications markets.
AP2553FDC-7 belongs to Diodes' precision adjustable current-limited power switch product line, engineered specifically for USB-compliant hot-swap and high-capacitance load applications demanding integrated protection, minimal BOM, and automotive-grade reliability.
FAQ
What is the function of the ILIM pin on AP2553FDC-7?
The ILIM pin sinks a precision current proportional to the desired current-limit threshold. Connecting an external resistor (10kΩ–210kΩ, 1% tolerance) between ILIM and GND sets the maximum output current from 75mA to 2.36A (typ.). Layout best practice requires shortest possible trace to minimize parasitic inductance and preserve accuracy.
Does AP2553FDC-7 provide reverse-current protection during normal operation?
Yes - when enabled, AP2553FDC-7 actively limits reverse current to 0.72A at a 200mV differential (VOUT–VIN), and blocks reverse flow entirely when disabled. This eliminates need for external reverse-blocking diodes in applications like USB-C docking stations where backfeed during cable removal is a risk.
How does the FAULT pin behave during an over-current event?
FAULT asserts low after a 7ms deglitch period upon over-current detection and remains latched low until the overload clears *and* EN is toggled (or power cycled). This behavior prevents nuisance tripping from transients while ensuring persistent faults trigger system-level intervention via MCU interrupt or status polling.
Can AP2553FDC-7 operate from a 3.3V supply?
Yes - its 2.7V–5.5V input range fully supports 3.3V rails. At VIN = 3.3V, RDS(ON) increases to ~115mΩ (max), and tR/tF remain within spec (0.7–1.5ms rise, 0.1–0.5ms fall). Quiescent current stays below 140µA, making it suitable for always-on auxiliary power domains.
AP2553FDC-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- 6-UDFN Exposed Pad
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Switch Type:
- General Purpose
- Number of Outputs:
- 1
- Ratio - Input:Output:
- 1:1
- Output Configuration:
- High Side
- Output Type:
- P-Channel
- Interface:
- On/Off
- Voltage - Load:
- 2.7V ~ 5.5V
- Voltage - Supply (Vcc/Vdd):
- Not Required
- Current - Output (Max):
- 2.1A
- Rds On (Typ):
- 80mOhm
- Input Type:
- Non-Inverting
- Features:
- Load Discharge, Status Flag
- Fault Protection:
- Current Limiting (Adjustable), Over Temperature, Reverse Current, UVLO
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- U-DFN2020-6 (Type C)
AP2553FDC-7 FAQ
1.How can I place an order for AP2553FDC-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP2553FDC-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 AP2553FDC-7 reliable?
The price and inventory of AP2553FDC-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP2553FDC-7 is usually 5 days.
3.What payment methods are accepted for AP2553FDC-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP2553FDC-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP2553FDC-7?
AP2553FDC-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP2553FDC-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 AP2553FDC-7?
For technical support, including AP2553FDC-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP2553FDC-7 requirements.
6.How does Aetrix verify that AP2553FDC-7 is sourced from the original manufacturer or authorized distributors?
All AP2553FDC-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 AP2553FDC-7 meets industry standards.
7.What is the process for return or replacement of AP2553FDC-7?
All AP2553FDC-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP2553FDC-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 AP2553FDC-7 part is unused and in its original packaging.
Return procedure for AP2553FDC-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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