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Diodes Incorporated AP130-33RG-7
- Part No.:
- AP130-33RG-7
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
AP130-33RG-7.pdf
- Description:
- IC REG LINEAR 3.3V 300MA SC59R
- Quantity:
- Payment:
- Shipping:
Inventory:24,822
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Product details
Overview
AP130-33RG-7 from Diodes Incorporated is a 300mA fixed-output 3.3V low-dropout linear regulator in SC59R package, featuring 400mV dropout at full load, ±2% output voltage accuracy, and 50µA quiescent current. It integrates PMOS pass element with no base current draw, thermal shutdown, and fold-back short-circuit protection-designed for battery-powered portable electronics requiring stable low-power regulation.
For engineers reviewing the AP130-33RG-7 datasheet, AP130-33RG-7 pinout, AP130-33RG-7 application, or AP130-33RG-7 equivalent, key selection criteria include input voltage range (2.7–5.5V), dropout behavior under 300mA load, thermal resistance (θJA = 250°C/W), stability requirements (10µF output capacitor), and SC59R pin compatibility with space-constrained PCB layouts.
Technical Context
The AP130-33RG-7 employs a PMOS pass transistor architecture enabling ultra-low quiescent current (50µA typ.) independent of load, while maintaining tight line regulation (0.1–0.3%/V) and load regulation (±30mV over 1–300mA). Its internal bandgap reference and error amplifier deliver 3.3V output with ±2% accuracy across -40°C to +85°C ambient.
Protection circuitry includes thermal shutdown triggered at ~125°C junction temperature and current-limit fold-back that reduces short-circuit current to 150–300mA. The device requires no external compensation and achieves fast transient response due to its fixed-gain error amplifier and optimized internal pole-zero placement.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3V ±2% - ensures stable rail for 3.3V logic, USB peripherals, and low-voltage microcontrollers. |
| Max Output Current | 300mA continuous - supports moderate-power sensors, RF modules, and interface ICs without thermal derating in SC59R. |
| Dropout Voltage | 400mV typ. at 300mA - enables operation down to 3.7V input, suitable for single-cell Li-ion (3.0–4.2V) and 2xAA alkaline systems. |
| Quiescent Current | 50µA typ. at zero load - minimizes standby power loss in always-on battery applications like remote controls and IoT endpoints. |
| PSRR | 58dB at 100Hz - suppresses ripple from noisy switchers or shared DC rails feeding sensitive analog or RF circuitry. |
| Thermal Resistance θJA | 250°C/W (SC59R) - defines maximum power dissipation (125mW at ΔT=31.25°C rise) without heatsink on standard FR-4 board. |
| Protection | Thermal shutdown + current-limit fold-back - prevents latch-up or destruction during sustained overload or short-circuit conditions. |
Pinout & Package
AP130-33RG-7 uses the SC59R package (3-pin SOT-23 variant), with exposed pad not electrically connected. Pin assignment follows top-view orientation: Pin 1 = GND, Pin 2 = OUT, Pin 3 = IN. This reversed pinout (vs. standard SC59) simplifies layout when ground routing dominates board layer usage.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | GND | Ground reference for error amplifier, bandgap, and thermal sensor; must connect to low-impedance ground plane for stability and thermal performance. |
| Pin 2 | OUT | Regulated 3.3V output; requires ≥10µF ceramic or tantalum capacitor to ground for phase margin and transient response. |
| Pin 3 | IN | Input supply (2.7–5.5V); needs local 1µF bypass capacitor near pin to suppress high-frequency noise and support load transients. |
Key Features
| Feature | Design Value |
|---|---|
| PMOS Pass Element | Eliminates base drive current, enabling 50µA quiescent current independent of load-critical for battery runtime extension. |
| Internal Current Limit | 350–450mA threshold with fold-back reduces short-circuit power dissipation and avoids thermal runaway during fault conditions. |
| Stable with Ceramic Output Caps | Guaranteed stability with ≥10µF X5R/X7R ceramic capacitors-reduces BOM cost and board area vs. electrolytic/tantalum alternatives. |
| Green & RoHS Compliant | Lead-free finish and halogen-free molding compound (per Diodes Inc. Note 9) meet environmental compliance for global industrial shipments. |
| Fast Load Transient Response | Settles within 10µs after 100mA step load change-maintains clean 3.3V rail for digital I/O and ADC reference during burst-mode operation. |
Applications
| Wireless Sensor Node | USB Peripheral Power |
|---|---|
|
Use Scenario: Battery-powered Zigbee/Bluetooth LE sensor node operating from 2×AA alkaline cells (2.4–3.2V) with intermittent 3.3V MCU and radio bursts. IC Role / Device Role / Timing Role: Primary 3.3V LDO regulator supplying MCU core, RF transceiver, and analog sensor interface. Use Value: 400mV dropout allows >95% battery utilization down to 2.7V input; 50µA quiescent current extends shelf life beyond 5 years in sleep mode. |
Use Scenario: Low-cost USB-to-serial adapter board powered via USB 5V bus, delivering regulated 3.3V to FTDI or CP2102 UART IC. IC Role / Device Role / Timing Role: Post-regulator converting USB 5V to clean 3.3V logic rail, rejecting switching noise from upstream DC-DC converter. Use Value: 58dB PSRR at 100Hz attenuates USB host switching ripple; ±2% accuracy ensures reliable UART level detection and flash programming voltage margins. |
| Industrial Control I/O Module | Optical Drive Logic Supply |
|
Use Scenario: DIN-rail mounted PLC I/O module with isolated 3.3V domain powering digital isolators, ADC drivers, and status LEDs. IC Role / Device Role / Timing Role: Local point-of-load regulator for isolated 3.3V subsystem, fed from 5V isolated DC-DC converter. Use Value: Thermal shutdown protects against enclosure overheating; SC59R's 250°C/W θJA enables operation up to +85°C ambient without derating. |
Use Scenario: CD-ROM or DVD-ROM drive PCB where 3.3V powers laser diode control logic, spindle motor driver interface, and buffer memory. IC Role / Device Role / Timing Role: Secondary regulator deriving 3.3V from main 5V rail, supporting fast load steps during disc spin-up and seek operations. Use Value: Fast transient response maintains <±1% output deviation during 200mA load steps; fold-back current limit prevents brownout during motor surge events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-output LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700-3302E/TO | 250mA max output, 175mV dropout at 250mA, 2.0µA quiescent current - lower IQ but lower current capability and tighter VIN min (2.7V same). | Suitable only for sub-250mA loads; insufficient for 300mA peak demands in optical drives or RF modules. | Select if ultra-low IQ (<5µA) is critical and load never exceeds 250mA; verify thermal margin at full load in TO-92. |
| TPS73033DBVR | 200mA max output, 120mV dropout at 200mA, 330µA IQ - higher IQ, lower dropout, but lower current rating and different pinout (SOT-23). | Not drop-in compatible due to SOT-23 pinout (IN/OUT/GND vs. SC59R GND/OUT/IN); requires PCB redesign. | Choose only if system prioritizes ultra-low dropout over current capacity and board layout permits pinout change. |
Compared with MCP1700-3302E/TO and TPS73033DBVR, AP130-33RG-7 uniquely balances 300mA delivery, 400mV dropout, and 50µA IQ in a pin-compatible SC59R footprint-making it optimal for cost-sensitive, space-constrained designs needing full-rated current without thermal compromise.
Availability
AP130-33RG-7 is available at Aetrix Electronics and suitable for battery-powered devices, PC peripherals, and wireless communication equipment requiring stable component supply with consistent lead-time and traceable sourcing.
Supply support for AP130-33RG-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 power management, signal integrity, and protection solutions for industrial, computing, and consumer markets.
The AP130 series belongs to Diodes' precision LDO portfolio, engineered specifically for portable and battery-operated applications demanding low dropout, low IQ, and robust fault protection in compact packages.
FAQ
What is the minimum input voltage required for AP130-33RG-7 to maintain regulation at 300mA?
The AP130-33RG-7 requires a minimum input voltage of 3.7V to sustain 3.3V output at 300mA load, based on its typical 400mV dropout voltage. Below this, output voltage drops linearly with input; operation below 2.7V input is outside specified operating conditions and may cause instability or shutdown.
Can AP130-33RG-7 be used with ceramic output capacitors?
Yes-AP130-33RG-7 is explicitly designed for stability with ≥10µF X5R or X7R ceramic capacitors. The datasheet confirms no ESR requirement, eliminating need for tantalum or aluminum electrolytic types and reducing board area and cost.
Does AP130-33RG-7 require an input bypass capacitor?
Yes-a 1µF ceramic capacitor placed as close as possible to the IN pin is mandatory per the datasheet to suppress high-frequency noise and ensure stable operation during load transients. Omitting it risks oscillation or degraded PSRR performance.
How does the SC59R package differ from SC59 in terms of pinout and layout?
SC59R reverses the pinout versus SC59: SC59 is IN/OUT/GND (Pin 1–3), while SC59R is GND/OUT/IN. This affects PCB footprint and routing-SC59R places GND on Pin 1 for easier ground-plane access, but requires verification of schematic symbol and layout to avoid misconnection.
AP130-33RG-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.5V @ 300mA
- Current - Output:
- 300mA
- Current - Quiescent (Iq):
- 100 µA
- Current - Supply (Max):
- -
- PSRR:
- 58dB (100Hz)
- Control Features:
- -
- Protection Features:
- Over Current, Over Temperature, Short Circuit
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-59R
AP130-33RG-7 FAQ
1.How can I place an order for AP130-33RG-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP130-33RG-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 AP130-33RG-7 reliable?
The price and inventory of AP130-33RG-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP130-33RG-7 is usually 5 days.
3.What payment methods are accepted for AP130-33RG-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP130-33RG-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP130-33RG-7?
AP130-33RG-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP130-33RG-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 AP130-33RG-7?
For technical support, including AP130-33RG-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP130-33RG-7 requirements.
6.How does Aetrix verify that AP130-33RG-7 is sourced from the original manufacturer or authorized distributors?
All AP130-33RG-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 AP130-33RG-7 meets industry standards.
7.What is the process for return or replacement of AP130-33RG-7?
All AP130-33RG-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP130-33RG-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 AP130-33RG-7 part is unused and in its original packaging.
Return procedure for AP130-33RG-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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