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Diodes Incorporated AP7350-185CF4-7
- Part No.:
- AP7350-185CF4-7
- Manufacturer:
- Diodes Incorporated
- Package:
- 4-XFBGA, WLBGA
- Datasheet:
-
AP7350-185CF4-7.pdf
- Description:
- LDO CMOS LOWCURR X2-WLB0606-4 T&
- Quantity:
- Payment:
- Shipping:
Inventory:2,946
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Product details
Overview
AP7350-185CF4-7 from Diodes Incorporated is a 1.85V fixed-output, 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 at +25°C, 0.32V dropout at 150mA, and an enable pin for on/off control - designed for power management in space-constrained, battery-powered wearable and IoT sensor modules.
For engineers reviewing the AP7350-185CF4-7 datasheet, AP7350-185CF4-7 pinout, AP7350-185CF4-7 application, or AP7350-185CF4-7 equivalent, key selection criteria include ultra-low IQ for multi-year battery life, miniature 0.64mm × 0.64mm footprint, guaranteed 150mA output under 2.0–5.25V input, and EN-controlled shutdown with 0.02µA standby current.
Technical Context
The AP7350-185CF4-7 integrates a precision voltage reference, error amplifier, current-limit circuit, and logic-level enable input - enabling precise regulation without external feedback components. Its internal resistor network fixes VOUT to 1.85V, eliminating trimming requirements and reducing BOM count.
It operates across a wide input range (2.0V to 5.25V), supports load currents up to 150mA, and maintains stability with only 0.1µF ceramic input/output capacitors. The device lacks active output discharge (non-D variant), making it suitable for applications where controlled VOUT decay is not required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.85V ±1% at +25°C - ensures stable core/bias rail for low-voltage MCUs and sensors without calibration. |
| Max Output Current | 150mA - sufficient to power BLE SoCs, MEMS sensors, or camera modules in compact wearables. |
| Quiescent Current | 0.25µA typical - extends coin-cell battery life to >5 years in always-on IoT edge nodes. |
| Dropout Voltage | 0.32V at 150mA - enables operation down to 2.17V input, preserving runtime as battery discharges. |
| Input Voltage Range | 2.0V to 5.25V - compatible with single Li-ion, Li-poly, or dual-AA/AAA battery inputs. |
| Enable Threshold | EN high ≥1.0V, low ≤0.4V - interfaces directly with 1.8V/3.3V GPIOs without level-shifting. |
| Thermal Resistance | θJA = 267°C/W - requires minimal PCB copper area for thermal relief in ultra-thin packages. |
Pinout & Package
AP7350-185CF4-7 uses the X2-WLB0606-4 wafer-level chip-scale package (0.64mm × 0.64mm, 0.34mm height), one of the smallest LDO footprints available - ideal for space-limited wearable and hearable designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (EN) | Enable control input | Logic-high (>1.0V) enables regulation; logic-low (<0.4V) forces shutdown with 0.02µA standby current. |
| 2 (GND) | Power ground reference | Must be connected to low-impedance system ground plane to minimize noise and ensure regulation accuracy. |
| 3 (VOUT) | Regulated output terminal | Delivers stable 1.85V; requires 0.1µF ceramic capacitor placed adjacent to pin for transient stability. |
| 4 (VIN) | Unregulated input supply | Accepts 2.0–5.25V; requires 0.1µF decoupling capacitor near pin to suppress supply ripple and load-step transients. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 0.25µA typical - enables multi-year operation from CR2032 batteries in maintenance-free sensor nodes. |
| Miniature WLCSP footprint | 0.64mm × 0.64mm X2-WLB0606-4 - reduces PCB area by >70% vs. SOT-23, critical for earbud and smartband layouts. |
| High output accuracy | ±1% at +25°C, ±2% over –40°C to +85°C - ensures reliable MCU core voltage margin without derating. |
| Wide input voltage range | 2.0V to 5.25V - supports direct connection to partially discharged Li-ion cells (2.5–4.2V) or regulated 3.3V rails. |
| Integrated enable function | Dedicated EN pin with rail-to-rail logic thresholds - simplifies power sequencing in multi-rail systems without external MOSFETs. |
Applications
| Wearable Fitness Tracker | IoT Environmental Sensor Node |
|---|---|
|
Use Scenario: Continuous heart-rate monitoring using optical PPG sensor and ultra-low-power MCU. IC Role / Device Role / Timing Role: Primary 1.85V supply for sensor analog front-end and MCU I/O domain. Use Value: 0.25µA IQ minimizes average current draw, extending CR2032 battery life beyond 24 months. |
Use Scenario: Battery-powered temperature/humidity sensor transmitting data via LoRaWAN every 10 minutes. IC Role / Device Role / Timing Role: Stable 1.85V bias for SiP RF transceiver and precision ADC reference. Use Value: ±1% VOUT accuracy prevents ADC gain drift; 150mA headroom supports brief RF transmit bursts. |
| Smart Hearing Aid Processor | Compact Camera Module Power |
|
Use Scenario: Miniaturized hearing aid with DSP-based noise cancellation and Bluetooth LE audio streaming. IC Role / Device Role / Timing Role: Core voltage regulator for ASIC/DSP operating at 1.85V with dynamic load switching. Use Value: 0.32V dropout preserves runtime during deep battery discharge (down to 2.17V VIN). |
Use Scenario: Embedded vision module in AR glasses requiring low-noise, fast-transient 1.85V for image sensor I/O. IC Role / Device Role / Timing Role: Dedicated low-ESR LDO for sensor interface rail, decoupled from noisy digital supplies. Use Value: Stability with 0.1µF ceramic caps enables tight layout; 267°C/W θJA allows passive thermal design. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700-1802E/TO | 1.8V fixed output, 250mA, 1.6µA IQ, TO-92 package (4.2mm × 3.7mm) | Larger footprint and higher IQ reduce suitability for coin-cell wearables | Prefer when through-hole assembly or higher current is needed; avoid for ultra-miniaturized designs. |
| Torex XC6206P182MR-G | 1.8V fixed, 150mA, 1.0µA IQ, SOT-25 package (2.9mm × 2.8mm) | 5× larger footprint and 4× higher IQ limit battery lifetime in always-on edge nodes | Acceptable for board-space-tolerant industrial sensors; not optimal for sub-10mm² wearables. |
Compared with MCP1700-1802E/TO and XC6206P182MR-G, AP7350-185CF4-7 delivers identical current capability with 1/4 the quiescent current and <1/30 the package area - making it uniquely suited for next-generation miniaturized, long-life battery systems.
Availability
AP7350-185CF4-7 is available at Aetrix Electronics and suitable for wearable electronics, IoT sensor modules, and wireless communication devices requiring stable component supply, consistent parametric performance, and long-term lifecycle support.
Supply support for AP7350-185CF4-7 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 - engineered to maximize battery longevity and minimize PCB real estate in space- and energy-constrained applications like wearables and edge sensors.
FAQ
What is the minimum input voltage required for AP7350-185CF4-7 to maintain regulation at full 150mA load?
The minimum input voltage is determined by dropout: at 150mA, dropout is 0.32V (typical), so VIN must be ≥ 1.85V + 0.32V = 2.17V. The datasheet guarantees operation down to 2.0V input, but full 150mA output is only assured above 2.17V at room temperature.
Can AP7350-185CF4-7 be used without an external output capacitor?
No - an output capacitor is mandatory for stability and transient response. The datasheet specifies a minimum 0.1µF ceramic capacitor (X5R/X7R) placed adjacent to VOUT and GND pins. Omitting COUT risks oscillation and poor load-step recovery.
Is the EN pin internally pulled up or down? What happens if left floating?
The EN pin has no internal pull-up or pull-down. Leaving it floating violates the Absolute Maximum Rating condition and may cause unpredictable regulator behavior - including partial turn-on or oscillation. It must be actively driven high or tied to VIN for permanent enable.
Does AP7350-185CF4-7 include reverse-current protection?
Yes - the device incorporates integrated reverse-current protection. When VIN falls below VOUT (e.g., during battery swap or input disconnect), the internal pass transistor blocks reverse current flow from VOUT to VIN, preventing backfeed and protecting upstream sources.
AP7350-185CF4-7 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):
- 1.85V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.58V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 700 nA
- Current - Supply (Max):
- -
- PSRR:
- -
- Control Features:
- Current Limit, Enable
- Protection Features:
- Over Current
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- X2-WLB0606-4
AP7350-185CF4-7 FAQ
1.How can I place an order for AP7350-185CF4-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7350-185CF4-7 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 AP7350-185CF4-7 reliable?
The price and inventory of AP7350-185CF4-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7350-185CF4-7 is usually 5 days.
3.What payment methods are accepted for AP7350-185CF4-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7350-185CF4-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7350-185CF4-7?
AP7350-185CF4-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7350-185CF4-7 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 AP7350-185CF4-7?
For technical support, including AP7350-185CF4-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7350-185CF4-7 requirements.
6.How does Aetrix verify that AP7350-185CF4-7 is sourced from the original manufacturer or authorized distributors?
All AP7350-185CF4-7 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 AP7350-185CF4-7 meets industry standards.
7.What is the process for return or replacement of AP7350-185CF4-7?
All AP7350-185CF4-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7350-185CF4-7, 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 AP7350-185CF4-7 part is unused and in its original packaging.
Return procedure for AP7350-185CF4-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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