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Diodes Incorporated AP7350D-33CF4-7
- Part No.:
- AP7350D-33CF4-7
- Manufacturer:
- Diodes Incorporated
- Package:
- 4-XFBGA, WLBGA
- Datasheet:
-
AP7350D-33CF4-7.pdf
- Description:
- IC REG LIN 3.3V 150MA X2WLB0606
- Quantity:
- Payment:
- Shipping:
Inventory:1,775
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Product details
Overview
AP7350D-33CF4-7 from Diodes Incorporated is a 3.3V, 150mA ultra-low quiescent current (0.25µA typ) LDO regulator in a wafer-level chip-scale X2-WLB0606-4 package. It features ±1% output voltage accuracy over temperature, active output discharge, and operates across 2.0V–5.25V input range - optimized for battery-powered wearable electronics and IoT sensor modules where minimal board space and extended runtime are critical.
For engineers reviewing the AP7350D-33CF4-7 datasheet, AP7350D-33CF4-7 pinout, AP7350D-33CF4-7 application, or AP7350D-33CF4-7 equivalent, key selection criteria include its 0.16V dropout at 3.3V/150mA, EN-controlled shutdown with 0.02µA standby current, and compatibility with 0.1µF ceramic input/output capacitors in space-constrained layouts.
Technical Context
The AP7350D integrates a precision voltage reference, error amplifier, current-limit circuit, and active output discharge path. Its enable input provides precise on/off control with defined logic thresholds (EN high ≥1.0V, EN low ≤0.4V), enabling system-level power sequencing.
Designed for ultra-low-power operation, it maintains regulation down to 2.0V input while delivering stable 3.3V output with <0.1%/V line regulation and ±25mV load regulation (1–150mA). The built-in discharge resistor (~35Ω) ensures rapid VOUT decay upon disable, preventing back-powering of downstream circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3V ±1% at +25°C; ±2% over –40°C to +85°C - ensures reliable MCU/core logic supply under thermal stress. |
| Max Output Current | 150mA continuous - sufficient for BLE/Wi-Fi modules, image sensors, and low-power microcontrollers. |
| Quiescent Current | 0.25µA typical - enables multi-year battery life in always-on wearables and remote sensors. |
| Dropout Voltage | 0.16V at 3.3V/150mA - allows operation from single-cell Li-ion (3.0V min) or two-cell alkaline (3.2V min) without brownout. |
| Enable Thresholds | EN high ≥1.0V, EN low ≤0.4V - compatible with 1.8V/3.3V GPIOs without level-shifting. |
| Active Discharge | ~35Ω internal pull-down - discharges output to <0.1V within ~1ms after disable, eliminating hold-up voltage issues. |
| Package | X2-WLB0606-4 (0.64mm × 0.64mm, 0.35mm height) - among smallest LDO footprints, saving >60% board area vs. SOT-23. |
Pinout & Package
AP7350D-33CF4-7 uses the X2-WLB0606-4 wafer-level chip-scale package: 0.64mm × 0.64mm body, 0.35mm pitch, SnAgCu solder balls. Bottom-view ball layout supports automated reflow assembly with standard PCB pad design per Diodes' outline drawing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (EN) | Enable control input | CMOS-compatible digital input; must be driven high (>1.0V) to activate regulator, low (<0.4V) to enter shutdown with 0.02µA standby current. |
| 2 (GND) | Power ground reference | Primary return path for input/output current; requires low-impedance connection to PCB ground plane for stability and EMI control. |
| 3 (VOUT) | Regulated output terminal | Delivers stable 3.3V; connects directly to load; internal discharge path activates when EN = low to prevent backfeed. |
| 4 (VIN) | Input power supply | Accepts 2.0–5.25V; requires 0.1µF ceramic capacitor placed adjacent to pin to suppress supply noise and support transient response. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low IQ | 0.25µA typical quiescent current enables >10-year battery life in coin-cell-powered IoT nodes. |
| Active Output Discharge | Integrated 35Ω discharge path eliminates need for external pull-down resistor, reducing BOM count and PCB area. |
| High Accuracy | ±1% output voltage tolerance at room temperature ensures reliable operation of 3.3V-tolerant peripherals without margin overhead. |
| Miniature WLCSP | X2-WLB0606-4 footprint (0.41mm²) allows placement in tight spaces behind displays or inside wearable enclosures. |
| Robust Protection | 4kV HBM ESD rating and 400mA latch-up immunity ensure reliability in handling and end-equipment environments. |
Applications
| Wearable Fitness Tracker | IoT Environmental Sensor Node |
|---|---|
|
Use Scenario: Continuous heart-rate monitoring using optical sensor and BLE SoC powered by CR2032 coin cell. IC Role / Device Role / Timing Role: Primary 3.3V power rail regulator for sensor analog front-end and wireless transceiver. Use Value: 0.25µA quiescent current extends battery life to 2+ years; active discharge prevents sensor bias drift during sleep mode transitions. |
Use Scenario: Battery-operated temperature/humidity node transmitting data hourly via LoRaWAN. IC Role / Device Role / Timing Role: Stable 3.3V supply for ultra-low-power MCU and RF transceiver during brief transmit bursts. Use Value: 0.16V dropout enables full utilization of declining battery voltage (down to 3.0V); 150mA headroom supports peak RF current draw. |
| Smart Camera Module | Medical Patch Sensor |
|
Use Scenario: Miniaturized USB-C camera dongle with CMOS image sensor and USB interface IC. IC Role / Device Role / Timing Role: Local 3.3V regulator for image sensor and USB PHY, decoupled from noisy host-supplied 5V bus. Use Value: 0.1µF input/output capacitor compatibility simplifies layout; ±1% accuracy ensures consistent ADC reference stability. |
Use Scenario: Disposable ECG patch with 7-day wear time, powered by thin-film lithium battery. IC Role / Device Role / Timing Role: Single-point power conversion from 3.6V battery to regulated 3.3V for analog signal chain and Bluetooth LE radio. Use Value: X2-WLB0606-4 package fits within 3mm × 3mm module footprint; 0.02µA shutdown current minimizes leakage during patient non-wear periods. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700-3302E/TO | TO-92 package (larger), 1.6µA IQ, no active discharge | Limited to through-hole or larger PCB areas; requires external discharge circuit for fast turn-off | Choose for cost-sensitive, non-space-constrained designs where ultra-low IQ is secondary |
| Torex XC6219B332MR-G | SOT-25 package (1.6mm × 1.6mm), 1µA IQ, no discharge, ±2% accuracy | Higher dropout (0.35V @ 150mA), less accurate output - may require derating for marginal battery voltages | Choose when SOT-25 hand-soldering or test probing is required, and 0.25µA IQ is not mandatory |
Compared with MCP1700-3302E/TO and XC6219B332MR-G, AP7350D-33CF4-7 delivers superior board-area efficiency, lowest quiescent current, and integrated discharge - making it optimal for miniaturized, long-life battery systems where every µA and mm² matters.
Availability
AP7350D-33CF4-7 is available at Aetrix Electronics and suitable for wearable electronics, IoT sensor modules, and wireless communication devices requiring stable component supply with guaranteed long-term availability.
Supply support for AP7350D-33CF4-7 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-efficiency power management, signal integrity, and protection solutions for consumer, industrial, and automotive markets.
The AP7350 series targets ultra-low-power portable electronics, delivering miniature, high-accuracy LDOs with industry-leading quiescent current for battery longevity and compact form factors.
FAQ
What is the minimum input voltage required for AP7350D-33CF4-7 to maintain regulation?
The AP7350D-33CF4-7 requires VIN ≥ VOUT + dropout voltage. At 150mA load and +25°C, dropout is 0.16V, so minimum VIN is 3.46V. Over temperature (–40°C to +85°C), max dropout is 0.35V, requiring VIN ≥ 3.65V for guaranteed 3.3V regulation at full load.
Can AP7350D-33CF4-7 be used without an external output capacitor?
No. An output capacitor (minimum 0.1µF ceramic) is mandatory for stability and transient response. Omitting COUT causes oscillation and output voltage collapse under load changes, as confirmed in the datasheet's Application Information section and stability graphs.
How does the active output discharge function impact system behavior during power-down?
When EN is pulled low, the internal ~35Ω discharge path pulls VOUT to GND within ~1ms (typical), preventing residual voltage from back-powering downstream ICs or causing undefined logic states. This eliminates need for external discharge resistors and ensures clean, predictable power sequencing.
Is AP7350D-33CF4-7 qualified for automotive applications?
No. AP7350D-33CF4-7 is not AEC-Q100 qualified. Diodes Incorporated offers automotive-grade variants (e.g., AP7350Q series) with PPAP support, IATF 16949 manufacturing, and extended temperature screening - contact Diodes sales for qualified alternatives.
AP7350D-33CF4-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 4-XFBGA, WLBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 5.25V
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.35V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 400 nA
- Current - Supply (Max):
- -
- PSRR:
- -
- Control Features:
- Enable
- Protection Features:
- Current Limit
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- X2-WLB0606-4
AP7350D-33CF4-7 FAQ
1.How can I place an order for AP7350D-33CF4-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7350D-33CF4-7 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 AP7350D-33CF4-7 reliable?
The price and inventory of AP7350D-33CF4-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7350D-33CF4-7 is usually 5 days.
3.What payment methods are accepted for AP7350D-33CF4-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7350D-33CF4-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7350D-33CF4-7?
AP7350D-33CF4-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7350D-33CF4-7 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 AP7350D-33CF4-7?
For technical support, including AP7350D-33CF4-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7350D-33CF4-7 requirements.
6.How does Aetrix verify that AP7350D-33CF4-7 is sourced from the original manufacturer or authorized distributors?
All AP7350D-33CF4-7 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 AP7350D-33CF4-7 meets industry standards.
7.What is the process for return or replacement of AP7350D-33CF4-7?
All AP7350D-33CF4-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7350D-33CF4-7, 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 AP7350D-33CF4-7 part is unused and in its original packaging.
Return procedure for AP7350D-33CF4-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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