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Diodes Incorporated AP130-18RG-7
- Part No.:
- AP130-18RG-7
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
AP130-18RG-7.pdf
- Description:
- IC REG LINEAR 1.8V 300MA SC59R
- Quantity:
- Payment:
- Shipping:
Inventory:4,915
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Product details
Overview
AP130-18RG-7 from Diodes Incorporated is a 300mA fixed-output 1.8V low-dropout linear regulator in SC59R package, featuring 400mV dropout at full load, ±2% output accuracy, and 50µA quiescent current. It integrates PMOS pass element with no base current draw, thermal shutdown, and current-limit protection-designed for battery-powered portable electronics requiring stable low-voltage supply.
For engineers reviewing the AP130-18RG-7 datasheet, AP130-18RG-7 pinout, AP130-18RG-7 application, or AP130-18RG-7 equivalent, key selection criteria include dropout voltage under 300mA load, thermal resistance (250°C/W for SC59R), input voltage range (2.7–5.5V), and green/RoHS-compliant packaging.
Technical Context
The AP130-18RG-7 employs a PMOS pass transistor architecture enabling zero gate-drive current and fast transient response. Its internal bandgap reference and error amplifier deliver tight regulation across temperature and load, with guaranteed 300mA output despite input sag down to VOUT + 0.4V.
Protection circuitry includes fold-back short-circuit current limiting (150–300mA) and thermal shutdown triggered at junction temperatures exceeding 125°C. Load regulation remains within ±40mV from 1mA to 300mA, and PSRR reaches 58dB at 100Hz with standard 1µF/10µF capacitor network.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.8V ±2% - ensures stable core voltage for 1.8V logic rails without external feedback. |
| Max Output Current | 300mA continuous - supports moderate-power microcontrollers, sensors, and interface ICs. |
| Dropout Voltage | 400mV typ. at 300mA - enables operation from single-cell Li-ion (3.0V min) or two-cell alkaline (3.2V min). |
| Quiescent Current | 50µA typ. at no load - minimizes standby power loss in battery-backed systems. |
| Input Voltage Range | 2.7V to 5.5V - compatible with USB-powered, coin-cell, and multi-cell battery inputs. |
| Thermal Resistance θJA | 250°C/W (SC59R) - requires minimal PCB copper area for thermal management in space-constrained layouts. |
| PSRR | 58dB at 100Hz - suppresses ripple from switching DC-DC stages upstream of LDO. |
Pinout & Package
AP130-18RG-7 is supplied in SC59R package: 3-pin SOT-23 variant with reversed pinout (GND–OUT–IN, top view). This compact surface-mount package measures 2.90 × 1.30 × 1.00 mm and features lead-free, green molding compound compliant with RoHS Directive 2002/95/EC.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for error amplifier and thermal shutdown comparator; must be low-impedance connection to system ground plane. |
| 2 | OUT | Regulated 1.8V output; requires ≥10µF ceramic capacitor to ground for stability per datasheet recommendation. |
| 3 | IN | Unregulated input (2.7–5.5V); must be decoupled with ≥1µF capacitor near pin to limit AC impedance during load transients. |
Key Features
| Feature | Design Value |
|---|---|
| PMOS Pass Element | Zero gate drive current eliminates base current loss, improving efficiency over NMOS/NPN-based LDOs at light loads. |
| Fold-Back Current Limit | Short-circuit current reduces to 150–300mA under fault, lowering power dissipation and preventing thermal runaway. |
| Fast Transient Response | Stabilizes within <10µs after 100mA step load change - critical for burst-mode digital loads like BLE radios. |
| Green Molding Compound | Halogen-free (no Br/Sb) construction meets IPC-1752A material declaration requirements for environmental compliance. |
| Thermal Shutdown | Activates at ~125°C junction temperature and holds until die cools by ≥15°C - prevents permanent damage during sustained overload. |
Applications
| Battery-Powered Portable Devices | PC Peripheral Power Rails |
|---|---|
|
Use Scenario: Powering Bluetooth headsets and wireless mice using single-cell lithium polymer batteries. IC Role / Device Role / Timing Role: Primary 1.8V LDO supplying RF transceiver and MCU core logic. Use Value: 50µA quiescent current extends shelf life and runtime; 400mV dropout allows >90% usable battery voltage range. |
Use Scenario: Providing clean 1.8V supply to USB-to-serial bridge ICs on docking stations. IC Role / Device Role / Timing Role: Post-regulation stage isolating noise-sensitive UART interfaces from noisy 5V USB bus. Use Value: 58dB PSRR at 100Hz attenuates USB switcher ripple, reducing bit error rate in serial communication. |
| CD/DVD Drive Logic Supply | LAN Card PHY Interface |
|
Use Scenario: Delivering regulated 1.8V to servo control ASICs and laser diode drivers in optical drives. IC Role / Device Role / Timing Role: Low-noise bias source for analog front-end circuits requiring stable reference voltage. Use Value: ±2% output accuracy maintains consistent laser bias current across temperature, minimizing read/write errors. |
Use Scenario: Powering 1.8V I/O banks of Ethernet PHY chips in gigabit LAN cards. IC Role / Device Role / Timing Role: Dedicated LDO for high-speed data interface pins to meet IEEE 802.3 signal integrity requirements. Use Value: Fast transient response handles burst traffic-induced current spikes without violating VIH/VIL thresholds. |
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 |
|---|---|---|---|
| MCP1700T-1802E/TT (Microchip) | 250mA max output, 170mV dropout at 250mA, 1.6µA quiescent current | Lower IQ suits ultra-low-power always-on sensors; lower current rating limits use with higher-drive peripherals | Select when standby current dominates design priority and load never exceeds 250mA |
| TPS73118DBVR (Texas Instruments) | 300mA output, 130mV dropout at 300mA, 400µA IQ, SOT-23-5 with enable pin | Includes active-high EN pin and tighter 1% accuracy; higher IQ increases battery drain in sleep mode | Choose when system-level power sequencing or tighter voltage tolerance is required, and enable control is available |
Compared with MCP1700T-1802E/TT and TPS73118DBVR, AP130-18RG-7 offers balanced performance: higher current capability than the Microchip part, lower quiescent current than the TI part, and SC59R's proven thermal behavior in cost-sensitive consumer PCBs without enable functionality.
Availability
AP130-18RG-7 is available at Aetrix Electronics and suitable for battery-powered portable devices, PC peripheral power rails, CD/DVD drive logic supply, and LAN card PHY interface applications requiring stable component supply, RoHS compliance, and green material content.
Supply support for AP130-18RG-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, computing, and consumer markets.
The AP130 series belongs to Diodes' precision LDO portfolio, engineered specifically for space-constrained, battery-operated applications where low dropout, low IQ, and robust fault protection are mandatory design requirements.
FAQ
What is the minimum input voltage required for AP130-18RG-7 to maintain regulation at 300mA?
The AP130-18RG-7 requires VIN ≥ VOUT + VDROP = 1.8V + 0.4V = 2.2V minimum. However, the datasheet specifies a 2.7V absolute minimum input due to internal circuitry headroom and stability margins. Operation below 2.7V is not guaranteed and may cause output collapse or oscillation.
Can AP130-18RG-7 be used without an output capacitor?
No. The datasheet mandates a minimum 10µF ceramic capacitor from OUT to GND for stability. Omitting it causes sustained oscillation or erratic regulation due to phase margin loss in the internal error amplifier loop. Tantalum or aluminum electrolytic capacitors are not recommended due to ESR sensitivity.
Does AP130-18RG-7 support reverse polarity protection?
No. The device lacks integrated reverse-voltage protection. Applying negative voltage to IN or OUT relative to GND can damage the internal PMOS pass transistor and bandgap circuitry. External Schottky diode or dedicated protection IC is required in systems prone to reverse connection.
How does thermal shutdown behave during continuous short-circuit condition?
Under sustained short-circuit, AP130-18RG-7 enters thermal shutdown at ~125°C junction temperature, turns off output, cools passively, and re-enables once junction drops ~15°C below trip point. This hiccup-mode cycling prevents permanent damage but causes intermittent output-external current limiting is advised for continuous fault scenarios.
AP130-18RG-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):
- 1.8V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.4V @ 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
AP130-18RG-7 FAQ
1.How can I place an order for AP130-18RG-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP130-18RG-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 AP130-18RG-7 reliable?
The price and inventory of AP130-18RG-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP130-18RG-7 is usually 5 days.
3.What payment methods are accepted for AP130-18RG-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP130-18RG-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP130-18RG-7?
AP130-18RG-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP130-18RG-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 AP130-18RG-7?
For technical support, including AP130-18RG-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP130-18RG-7 requirements.
6.How does Aetrix verify that AP130-18RG-7 is sourced from the original manufacturer or authorized distributors?
All AP130-18RG-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 AP130-18RG-7 meets industry standards.
7.What is the process for return or replacement of AP130-18RG-7?
All AP130-18RG-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP130-18RG-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 AP130-18RG-7 part is unused and in its original packaging.
Return procedure for AP130-18RG-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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