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Diodes Incorporated AP7370-30FDC-7
- Part No.:
- AP7370-30FDC-7
- Manufacturer:
- Diodes Incorporated
- Package:
- 6-UDFN Exposed Pad
- Datasheet:
-
AP7370-30FDC-7.pdf
- Description:
- IC REG LINEAR 3V 300MA 6DFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,532
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Product details
Overview
AP7370-30FDC-7 from Diodes Incorporated is a 3.0V fixed-output, 300mA ultra-low dropout (ULDO) linear regulator in U-DFN2020-6 (Type C) package. It operates across 3.2V–18V input range, delivers ±1% output voltage accuracy at 25°C, features 500mV dropout at 100mA load, and draws only 1.5µA ground current at zero load - enabling long battery life in portable instrumentation and USB-powered devices.
For engineers reviewing the AP7370-30FDC-7 datasheet, AP7370-30FDC-7 pinout, AP7370-30FDC-7 application, or AP7370-30FDC-7 equivalent, key selection criteria include wide VIN tolerance, reverse current protection, thermal shutdown behavior, low-ESR ceramic capacitor compatibility, and footprint-constrained U-DFN2020-6 integration for space-limited PCBs.
Technical Context
The AP7370-30FDC-7 integrates a precision voltage reference, error amplifier, resistor network for fixed 3.0V output, current-limit circuit (350mA min), chip enable logic, and reverse-current blocking. Its architecture supports stable regulation under fast load transients while maintaining <0.5% load regulation across 1mA–300mA.
Thermal shutdown activates at +160°C with +20°C hysteresis; dropout voltage remains valid only for VOUT ≥ 2.8V per spec; ground current scales linearly with load up to 300mA (250–300µA typ), ensuring predictable power budgeting in battery-operated systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.0V ±1% (±2% over –40°C to +125°C) - ensures stable MCU core or sensor supply under temperature variation |
| Input Voltage Range | 3.2V to 18V - supports direct connection to 12V rails, automotive batteries, or multi-cell Li-ion packs |
| Max Output Current | 300mA continuous - sufficient for microcontrollers, RF modules, and analog front-ends in portable gear |
| Dropout Voltage | 500mV @ 100mA (3.0V ≤ VOUT < 5.0V) - enables regulation down to 3.5V input, critical for brownout resilience |
| Ground Current | 1.5µA @ IOUT = 0A; 250–300µA @ 300mA - minimizes quiescent drain in always-on monitoring circuits |
| Line Regulation | 0.05%/V - maintains tight output stability despite input ripple or battery sag |
| Thermal Shutdown | +160°C activation with +20°C hysteresis - prevents permanent damage during sustained overload or poor heatsinking |
Pinout & Package
AP7370-30FDC-7 uses the U-DFN2020-6 (Type C) package: 2.0mm × 2.0mm × 0.6mm body, 0.65mm pitch, exposed thermal pad (EP) connected to GND for enhanced thermal dissipation. Pin 1 is marked by chamfered corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VIN | Main input supply connection; accepts up to 18V DC; requires local 1µF ceramic decoupling |
| 2 | GND | Analog ground reference and primary return path; tied to EP for optimal thermal performance |
| 3 | VOUT | Regulated 3.0V output; stable with 1µF low-ESR ceramic capacitor; drives downstream logic/sensors |
| 4 | NC | No internal connection; must be left floating or grounded per layout best practice (not tied to signal nets) |
| 5 | NC | No internal connection; same as Pin 4 - no routing or vias required |
| 6 | NC | No internal connection; third NC terminal in fixed-output version; unused in this configuration |
| EP | GND | Exposed thermal pad; must be soldered to PCB GND plane for θJA = 54°C/W and reliable 300mA operation |
Key Features
| Feature | Design Value |
|---|---|
| Wide input voltage range | Supports 3.2V–18V inputs - eliminates need for pre-regulation stages in mixed-rail systems |
| Reverse current protection | Blocks backfeed from VOUT to VIN when input is absent - prevents battery discharge through load paths |
| Ultra-low quiescent current | 1.5µA at zero load - extends shelf life and runtime in battery-backed metering and IoT edge nodes |
| Ceramic capacitor compatible | Stable with ≥1µF X5R/X7R ceramics - reduces BOM count and board area vs. tantalum or electrolytic solutions |
| Short-circuit & thermal protection | Auto-recovery current limit + +160°C shutdown - enables robust operation in unattended field deployments |
Applications
| Portable Weighing Scales | Battery-Powered Data Loggers |
|---|---|
|
Use Scenario: Compact handheld or benchtop weighing instruments powered by two AA/AAA cells or Li-ion pouches. IC Role / Device Role / Timing Role: Primary 3.0V supply for 24-bit sigma-delta ADC, microcontroller, and LCD driver. Use Value: 500mV dropout allows full-scale operation down to 3.5V input, extending usable battery range by >15% versus standard LDOs. |
Use Scenario: Environmental sensor nodes deployed in remote locations with 10-year battery life targets. IC Role / Device Role / Timing Role: Always-on 3.0V rail for ultra-low-power MCU sleep mode and periodic wake-up sensing. Use Value: 1.5µA ground current minimizes standby drain, directly contributing to multi-year operational lifetime. |
| USB-Powered Test Equipment | Industrial Handheld Meters |
|
Use Scenario: Portable oscilloscope probes, multimeters, or signal generators drawing power from USB 2.0/3.0 hosts. IC Role / Device Role / Timing Role: Clean 3.0V domain for analog front-end amplifiers and reference buffers. Use Value: 0.05%/V line regulation rejects USB port voltage fluctuations, preserving measurement accuracy. |
Use Scenario: Ruggedized handheld meters used in factory floors with variable 9–18V battery or adapter inputs. IC Role / Device Role / Timing Role: Main system regulator delivering 3.0V to FPGA configuration logic and communication interfaces. Use Value: 18V max input rating avoids external TVS or step-down stages, simplifying power architecture and reducing cost. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ULDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP7375-30FDC-7 | Successor device with improved PSRR (65dB @ 1kHz), lower dropout (400mV @ 100mA), and same pinout/package | Recommended for new designs requiring higher noise immunity in sensitive analog signal chains | Select AP7375-30FDC-7 where PSRR >60dB and dropout <450mV are mandatory; not drop-in for legacy AP7370 layouts due to revised thermal pad requirements |
| MCP1703T-3002E/MB | 300mA, 3.0V fixed, SOT-23-5; 600mV dropout @ 250mA; 2.5µA IQ; no reverse current protection | Suitable for cost-sensitive, non-battery-backup applications where reverse feed is not a risk | Choose MCP1703T-3002E/MB only if board space allows SOT-23-5 and reverse current blocking is unnecessary |
Compared with AP7370-30FDC-7, AP7375-30FDC-7 offers measurable PSRR and dropout improvements but requires updated layout for thermal pad; MCP1703T-3002E/MB trades reverse protection and wide-VIN capability for lower unit cost and smaller footprint.
Availability
AP7370-30FDC-7 is available at Aetrix Electronics and suitable for portable instrumentation, USB-powered test gear, and industrial handheld meters requiring stable component supply with guaranteed long-term sourcing.
Supply support for AP7370-30FDC-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 industrial and consumer markets.
The AP7370 series belongs to Diodes' wide-input ULDO regulator product line, designed specifically for battery-powered and multi-rail embedded systems demanding high accuracy, low IQ, and robust fault protection.
FAQ
Is AP7370-30FDC-7 recommended for new designs?
No - Diodes explicitly marks AP7370-30FDC-7 as "NOT RECOMMENDED FOR NEW DESIGN" in its datasheet. The AP7375-30FDC-7 is the designated successor with enhanced PSRR, lower dropout, and updated thermal characteristics. Legacy designs may continue using AP7370-30FDC-7 under existing qualification, but new projects should adopt AP7375-30FDC-7 or verify alternate qualified regulators.
What is the minimum input voltage required for regulation at 3.0V output?
The absolute minimum input voltage is 3.2V per Recommended Operating Conditions. However, to maintain regulation within specification (including dropout margin and line regulation), VIN must be ≥ VOUT + VDROP = 3.0V + 0.5V = 3.5V at 100mA load. At lighter loads, regulation holds down to 3.2V, but design margin requires ≥3.5V for full 300mA capability.
Can AP7370-30FDC-7 drive a 300mA load continuously in U-DFN2020-6 package?
Yes - with proper PCB layout. The U-DFN2020-6 (Type C) package has θJA = 54°C/W. At 300mA and 18V input (worst-case power dissipation ≈ 4.5W), junction temperature rise would exceed safe limits without thermal relief. In practice, with VIN ≤ 9V and full GND plane connection to EP, continuous 300mA operation is achievable with TJ < 125°C.
Does AP7370-30FDC-7 require an external enable signal?
No - AP7370-30FDC-7 has no enable pin. It operates continuously when VIN is within specification. The device includes internal chip-enable logic that automatically disables output during undervoltage lockout (UVLO) below ~2.7V, but there is no user-controllable EN terminal. For on/off control, external MOSFET switching on VIN or VOUT is required.
AP7370-30FDC-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 6-UDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 18V
- Voltage - Output (Min/Fixed):
- 3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.6V @ 100mA
- Current - Output:
- 300mA
- Current - Quiescent (Iq):
- 2.5 µA
- Current - Supply (Max):
- 300 µA
- PSRR:
- -
- Control Features:
- -
- Protection Features:
- Over Current, Over Temperature, Reverse Current, Short Circuit
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- U-DFN2020-6 (Type C)
AP7370-30FDC-7 FAQ
1.How can I place an order for AP7370-30FDC-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7370-30FDC-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 AP7370-30FDC-7 reliable?
The price and inventory of AP7370-30FDC-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7370-30FDC-7 is usually 5 days.
3.What payment methods are accepted for AP7370-30FDC-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7370-30FDC-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7370-30FDC-7?
AP7370-30FDC-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7370-30FDC-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 AP7370-30FDC-7?
For technical support, including AP7370-30FDC-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7370-30FDC-7 requirements.
6.How does Aetrix verify that AP7370-30FDC-7 is sourced from the original manufacturer or authorized distributors?
All AP7370-30FDC-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 AP7370-30FDC-7 meets industry standards.
7.What is the process for return or replacement of AP7370-30FDC-7?
All AP7370-30FDC-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7370-30FDC-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 AP7370-30FDC-7 part is unused and in its original packaging.
Return procedure for AP7370-30FDC-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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