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Diodes Incorporated AP7350D-45CF4-7
- Part No.:
- AP7350D-45CF4-7
- Manufacturer:
- Diodes Incorporated
- Package:
- 4-XFBGA, WLBGA
- Datasheet:
-
AP7350D-45CF4-7.pdf
- Description:
- IC REG LIN 4.5V 150MA X2WLB0606
- Quantity:
- Payment:
- Shipping:
Inventory:2,379
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Product details
Overview
AP7350D-45CF4-7 from Diodes Incorporated is a 4.5V fixed-output, 150mA ultra-low quiescent current LDO regulator with active output discharge, housed in the X2-WLB0606-4 wafer-level chip-scale package. It delivers ±1% output voltage accuracy across -40°C to +85°C, supports 2.0V–5.25V input range, and draws only 0.25µA typical quiescent current - enabling multi-year battery life in compact wearable and IoT sensor modules.
For engineers reviewing the AP7350D-45CF4-7 datasheet, AP7350D-45CF4-7 pinout, AP7350D-45CF4-7 application, or AP7350D-45CF4-7 equivalent, key selection criteria include its 0.14V dropout at 150mA (VOUT=4.5V), 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 protection, and enable-controlled power path - all optimized for low-noise, low-power regulation in battery-fed systems. Its internal active discharge circuit pulls VOUT to GND within milliseconds after EN deactivation, preventing floating outputs and ensuring clean power sequencing.
Designed for operation with minimal external components, it achieves stability using 0.1µF X5R/X7R ceramic capacitors on both input and output, and maintains regulation down to 2.0V VIN while delivering full 150mA load current at VOUT = 4.5V with ≤0.35V dropout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 4.5V ±1% at +25°C; ±2% over full temperature range - ensures stable supply for 3.3V/5V-compatible logic and analog sensors. |
| Max Output Current | 150mA continuous - sufficient to power BLE/Wi-Fi modules, image sensors, or microcontroller peripherals without thermal derating in X2-WLB0606-4 package. |
| Quiescent Current | 0.25µA typical at +25°C - extends coin-cell or Li-ion battery life to >5 years in always-on sensing applications. |
| Dropout Voltage | 0.14V (typ) at 150mA load (VOUT=4.5V) - enables operation down to 4.64V input, preserving usable battery voltage range. |
| EN Thresholds | VIL ≤ 0.4V, VIH ≥ 1.0V - compatible with 1.8V/3.3V GPIOs without level-shifting; prevents false turn-on from leakage or noise. |
| Active Discharge | 35Ω typical pull-down resistance - discharges VOUT to <0.1V within 100µs after EN low, eliminating residual voltage in power-gated subsystems. |
| Thermal Resistance | θJA = 267°C/W - requires no heatsink; PCB copper area alone suffices for full-load operation at +40°C ambient. |
Pinout & Package
AP7350D-45CF4-7 uses the X2-WLB0606-4 wafer-level chip-scale package (0.64mm × 0.64mm × 0.34mm), featuring SnAgCu solder balls and Level 1 moisture sensitivity. Its 4-terminal layout minimizes board footprint while supporting high-density routing.
| 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 draw. |
| 2 (GND) | Power ground reference | Primary return path for input, output, and internal bias currents; requires low-impedance connection to system ground plane. |
| 3 (VOUT) | Regulated output node | Delivers stable 4.5V ±1%; includes integrated discharge FET that actively sinks current when EN is low. |
| 4 (VIN) | Unregulated input supply | Accepts 2.0V–5.25V; must be decoupled with 0.1µF ceramic capacitor placed adjacent to this pin and GND. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low IQ operation | 0.25µA typical quiescent current enables >5-year battery life in always-on wearables and environmental sensors. |
| Integrated active discharge | 35Ω internal pull-down eliminates need for external discharge resistor, reducing BOM count and PCB area. |
| High accuracy over temperature | ±1% at +25°C and ±2% across -40°C to +85°C ensures reliable ADC reference and RF front-end biasing. |
| Minimal external components | Stable with 0.1µF ceramic CIN/COUT - eliminates bulk capacitors and simplifies layout in sub-2mm² footprints. |
| Robust ESD protection | 4kV HBM / 400V MM rating allows direct integration into handheld devices without additional transient protection. |
Applications
| Wearable Health Monitor | IoT Environmental Sensor Node |
|---|---|
|
Use Scenario: Continuous heart-rate and SpO₂ monitoring using optical sensor ICs and BLE SoC in wrist-worn form factor. IC Role / Device Role / Timing Role: Primary 4.5V supply for analog front-end and radio transceiver; provides clean, low-noise bias under dynamic load switching. Use Value: 0.25µA quiescent current extends CR2032 battery life beyond 24 months; active discharge prevents sensor latch-up during mode transitions. |
Use Scenario: Battery-powered air quality sensor (PM2.5, CO₂, VOC) transmitting data hourly via LoRaWAN. IC Role / Device Role / Timing Role: Regulator for microcontroller, gas sensors, and RF transceiver; activated only during measurement and transmission bursts. Use Value: EN-controlled shutdown reduces average system current to <1µA; 0.14V dropout maximizes usable battery voltage down to 2.8V. |
| Smart Camera Module | Industrial Wireless Transmitter |
|
Use Scenario: Miniature USB-C camera dongle with CMOS image sensor and USB interface IC. IC Role / Device Role / Timing Role: Dedicated 4.5V rail for image sensor analog core and PLL clock generation circuitry. Use Value: ±1% output accuracy ensures consistent pixel response and color fidelity; 267°C/W θJA avoids thermal throttling in sealed enclosures. |
Use Scenario: DIN-rail mounted vibration sensor node reporting to cloud via NB-IoT, powered by AA alkaline cells. IC Role / Device Role / Timing Role: Main power regulator for MCU, MEMS accelerometer, and cellular modem during wake-up cycles. Use Value: Compatibility with 0.1µF ceramic capacitors enables robust performance across -25°C to +70°C industrial environments without electrolytic aging concerns. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-4502E/TT | Same 4.5V output, 250mA rating, but 1.6µA IQ and no active discharge. | Lacks fast VOUT discharge; requires external resistor for same functionality. | Preferred where higher output current margin is needed and board space permits external discharge circuit. |
| Torex XC6210B452MR-G | 4.5V output, 0.6µA IQ, 100mA max, no discharge; SOT-25 package (2.9mm × 2.8mm). | 3× larger footprint; lower current capability limits use with high-pulse RF loads. | Selected when legacy SMT placement infrastructure favors SOT-25 over WLCSP and discharge is not required. |
Compared with MCP1700T-4502E/TT and XC6210B452MR-G, AP7350D-45CF4-7 uniquely combines ultra-low 0.25µA quiescent current, 150mA capability, and integrated discharge in a 0.64mm² footprint - making it optimal for next-generation miniaturized battery systems where every µA and mm² matters.
Availability
AP7350D-45CF4-7 is available at Aetrix Electronics and suitable for wearable electronics, IoT sensor nodes, and wireless communication modules requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for AP7350D-45CF4-7 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 precision regulation in the smallest possible footprint - specifically engineered for battery-operated wearables, sensor hubs, and edge AI endpoints where energy efficiency and miniaturization are critical.
FAQ
What is the minimum input voltage required for AP7350D-45CF4-7 to maintain regulation at full 150mA load?
The AP7350D-45CF4-7 requires VIN ≥ VOUT + VDROPOUT. At 150mA and VOUT = 4.5V, maximum dropout is 0.35V per datasheet, so minimum VIN is 4.85V. However, the device remains functional down to 2.0V VIN - just unable to sustain 4.5V output below the dropout threshold. For guaranteed 4.5V regulation at full load, VIN must be ≥4.85V.
Can AP7350D-45CF4-7 be used without an input capacitor?
No - a minimum 0.1µF ceramic capacitor between VIN and GND is mandatory per datasheet. Without it, input voltage droop during load transients can cause instability, startup failure, or excessive ripple. The capacitor must be placed directly adjacent to the VIN and GND pins with short, wide traces to minimize inductance.
How does the active discharge function behave during EN deactivation?
When EN is pulled low, the internal 35Ω discharge FET connects VOUT to GND, sinking current until VOUT falls below ~0.1V. This occurs within 100µs for a 0.1µF load. Discharge only activates after EN goes low and ceases immediately upon EN reassertion - no delay or hysteresis is involved.
Is AP7350D-45CF4-7 qualified for automotive applications?
No - AP7350D-45CF4-7 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. This part is rated for -40°C to +85°C industrial operation only.
AP7350D-45CF4-7 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):
- 4.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.35V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 700 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-45CF4-7 FAQ
1.How can I place an order for AP7350D-45CF4-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7350D-45CF4-7 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-45CF4-7 reliable?
The price and inventory of AP7350D-45CF4-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7350D-45CF4-7 is usually 5 days.
3.What payment methods are accepted for AP7350D-45CF4-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7350D-45CF4-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7350D-45CF4-7?
AP7350D-45CF4-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7350D-45CF4-7 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-45CF4-7?
For technical support, including AP7350D-45CF4-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7350D-45CF4-7 requirements.
6.How does Aetrix verify that AP7350D-45CF4-7 is sourced from the original manufacturer or authorized distributors?
All AP7350D-45CF4-7 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-45CF4-7 meets industry standards.
7.What is the process for return or replacement of AP7350D-45CF4-7?
All AP7350D-45CF4-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7350D-45CF4-7, 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-45CF4-7 part is unused and in its original packaging.
Return procedure for AP7350D-45CF4-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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