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Diodes Incorporated AP2204R-1.8TRG1
- Part No.:
- AP2204R-1.8TRG1
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-243AA
- Datasheet:
-
AP2204R-1.8TRG1.pdf
- Description:
- IC REG LINEAR 1.8V 150MA SOT89-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,199
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Product details
Overview
AP2204R-1.8TRG1 from Diodes Incorporated is a fixed-output 1.8V ultra-low dropout (ULDO) linear regulator in SOT-89 package, designed for space-constrained portable electronics. It delivers up to 150mA output current with 100mV dropout at 100µA load, 60dB PSRR at 1kHz, ±2% output voltage accuracy, and operates across 2.6V–24V input range - ideal for USB-powered devices and battery-backed microcontroller subsystems.
For engineers reviewing the AP2204R-1.8TRG1 datasheet, AP2204R-1.8TRG1 pinout, AP2204R-1.8TRG1 application, or AP2204R-1.8TRG1 equivalent, key selection criteria include dropout performance under light-load conditions, thermal behavior in SOT-89 Option 1 layout, compatibility with ceramic output capacitors, and enable-input logic thresholds for power sequencing control.
Technical Context
The AP2204R-1.8TRG1 integrates a precision 1.24V bandgap reference, error amplifier, resistor network for fixed 1.8V output, current-limit protection, thermal shutdown, and an active-high enable circuit. Its EPNP process enables wide VIN operation while maintaining low quiescent current.
It features internal compensation optimized for stable operation with ≥1.0µF ceramic input and ≥2.2µF ceramic output capacitors. The EN pin accepts TTL-compatible logic levels (VIH ≥ 2.0V, VIL ≤ 0.4V), enabling clean power gating without external level-shifting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.8V ±2% - ensures stable core supply for 1.8V I/O or low-power MCU domains without external feedback. |
| Input Voltage Range | 2.6V to 24V - supports single-cell LiFePO₄, multi-cell alkaline, or industrial 12V/24V rails with margin. |
| Dropout Voltage | 100mV @ 100µA - enables regulation down to VIN = 1.9V, critical for battery end-of-life operation. |
| PSRR | 60dB @ 1kHz - suppresses switching noise from upstream DC-DC converters feeding the LDO input. |
| Quiescent Current | 20µA @ zero load - extends battery life in always-on sensor nodes or standby modes. |
| Enable Threshold | VIH = 2.0V min, VIL = 0.4V max - interfaces directly with 1.8V/3.3V GPIO without pull-up or level shifters. |
| Thermal Shutdown | Activates at TJ ≈ +150°C - protects against sustained overload or poor PCB thermal design in SOT-89. |
Pinout & Package
SOT-89 (Option 1) package: 3-pin surface-mount outline with exposed pad connected to GND per Note 4 for thermal dissipation. Pin 1 = VIN, Pin 2 = VOUT, Pin 3 = GND. Compatible with standard SOT-89 footprint and reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VIN) | Input voltage supply | Accepts 2.6–24V; requires ≥1.0µF ceramic decoupling close to pin for stability. |
| 2 (VOUT) | Regulated output | Delivers 1.8V ±2%; requires ≥2.2µF ceramic capacitor on same side of PCB for transient response. |
| 3 (GND) | Power ground reference | Must be tied to exposed pad (Note 4); forms return path for error amplifier and thermal conduction path. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low dropout | 100mV @ 100µA enables operation with minimal headroom - critical for aging batteries in portable gear. |
| Ceramic capacitor compatible | No ESR requirements; eliminates need for tantalum or aluminum electrolytics - improves reliability and reduces board area. |
| High PSRR (60dB @ 1kHz) | Rejects ripple from noisy switchers - preserves signal integrity in mixed-signal SoC power domains. |
| Low ground current (20µA no-load) | Minimizes parasitic drain in battery-critical applications like remote sensors or wearables. |
| Thermal shutdown + current limit | Self-protecting under short-circuit or overtemperature - eliminates need for external fault management circuitry. |
Applications
| USB Peripheral Power | Laptop Subsystem Rail |
|---|---|
|
Use Scenario: Powering USB-C audio adapters with integrated DAC/AMP requiring clean 1.8V bias. IC Role / Device Role / Timing Role: Primary post-regulator delivering low-noise 1.8V from 5V USB bus or internal 3.3V rail. Use Value: 60dB PSRR prevents audible switching noise coupling into analog audio paths; 100mV dropout maintains regulation during USB voltage sag. |
Use Scenario: Supplying 1.8V I/O domain for embedded controller in notebook baseboard management unit (BMC). IC Role / Device Role / Timing Role: Standby LDO providing always-on 1.8V for RTC, wake logic, and secure boot circuitry. Use Value: 20µA quiescent current minimizes battery drain during weeks-long shelf storage; EN pin allows firmware-controlled power gating. |
| Portable Medical Sensor | Industrial Handheld Terminal |
|
Use Scenario: Regulating power for low-power BLE SoC and analog front-end in wearable glucose monitor. IC Role / Device Role / Timing Role: Single-component solution replacing discrete LDO + enable logic in constrained 2-layer PCB. Use Value: SOT-89 footprint fits tight mechanical envelopes; ±2% accuracy ensures ADC reference stability across temperature. |
Use Scenario: Generating 1.8V for FPGA configuration memory and interface logic in ruggedized barcode scanner. IC Role / Device Role / Timing Role: Input-tolerant LDO accepting wide-range 12V vehicle power or 3.7V Li-ion pack. Use Value: 24V max input withstands load-dump transients; thermal shutdown prevents field failure during extended operation in hot enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ULDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-1802E/TT | 250mA rated, 170mV dropout @ 250mA, SOT-23-3 package, no enable pin | Lacks EN control; higher dropout limits use in low-VIN battery apps | Choose when enable functionality is unnecessary and higher output current is required. |
| TPS7A0518PDBVR | 200mA rated, 130mV dropout @ 100mA, 25µA IQ, SOT-23-5 with EN | Lower dropout than AP2204R-1.8TRG1 at medium loads but narrower 1.8–6V input range | Prefer when input stays within 1.8–6V and tighter dropout at 100mA+ is needed. |
Compared with MCP1700T-1802E/TT and TPS7A0518PDBVR, the AP2204R-1.8TRG1 uniquely balances ultra-wide 2.6–24V input capability, enable control, and sub-100mV dropout at microamp loads - making it optimal for legacy battery chemistries and industrial input rails where other ULDOs fall outside operational range.
Availability
AP2204R-1.8TRG1 is available at Aetrix Electronics and suitable for USB peripheral power, portable medical sensors, industrial handheld terminals, and laptop subsystem rails requiring stable component supply with long-term manufacturability.
Supply support for AP2204R-1.8TRG1 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 semiconductor manufacturer specializing in discrete, analog, and mixed-signal ICs, with emphasis on power management, signal integrity, and protection solutions.
The AP2204 series belongs to Diodes' high-voltage ULDO regulator product line, engineered specifically for battery-powered and wide-input industrial applications demanding low noise, high PSRR, and robust thermal behavior in compact packages.
FAQ
What is the minimum input voltage required for regulation at 1.8V output?
The AP2204R-1.8TRG1 requires VIN ≥ max(2.6V, VOUT + 1V) = 2.8V for guaranteed regulation. Below 2.8V, dropout occurs and output voltage drops linearly with input - verified in Electrical Characteristics Table (Note 9) and Performance Characteristics plots.
Can the AP2204R-1.8TRG1 be used with a 0.47µF output capacitor?
No - the datasheet specifies ≥2.2µF ceramic output capacitance for stability. Using 0.47µF risks oscillation or degraded transient response, as confirmed by stability analysis in Typical Applications Circuit and PSRR vs. Frequency curves.
Is the exposed pad on the SOT-89 package electrically connected?
Yes - per Note 4 in the Pin Assignments section, the substrate/exposed pad must be connected to GND. This connection provides both electrical grounding for internal circuitry and thermal conduction to the PCB copper pour.
Does the AP2204R-1.8TRG1 support reverse polarity protection?
No - the device lacks intrinsic reverse-voltage blocking. Applying reversed input voltage may damage the IC, as indicated by Absolute Maximum Ratings listing only positive VIN (0 to +38V), with no negative rating specified.
AP2204R-1.8TRG1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-243AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 24V
- Voltage - Output (Min/Fixed):
- 1.8V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.5V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 50 µA
- Current - Supply (Max):
- 2.5 mA
- PSRR:
- 60dB (100Hz ~ 1kHz)
- Control Features:
- -
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-89-3
AP2204R-1.8TRG1 FAQ
1.How can I place an order for AP2204R-1.8TRG1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP2204R-1.8TRG1 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 AP2204R-1.8TRG1 reliable?
The price and inventory of AP2204R-1.8TRG1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP2204R-1.8TRG1 is usually 5 days.
3.What payment methods are accepted for AP2204R-1.8TRG1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP2204R-1.8TRG1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP2204R-1.8TRG1?
AP2204R-1.8TRG1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP2204R-1.8TRG1 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 AP2204R-1.8TRG1?
For technical support, including AP2204R-1.8TRG1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP2204R-1.8TRG1 requirements.
6.How does Aetrix verify that AP2204R-1.8TRG1 is sourced from the original manufacturer or authorized distributors?
All AP2204R-1.8TRG1 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 AP2204R-1.8TRG1 meets industry standards.
7.What is the process for return or replacement of AP2204R-1.8TRG1?
All AP2204R-1.8TRG1 units undergo pre-shipment inspection (PSI). If there is an issue with AP2204R-1.8TRG1, 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 AP2204R-1.8TRG1 part is unused and in its original packaging.
Return procedure for AP2204R-1.8TRG1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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