My Inquiry
My Account
Diodes Incorporated AP2202K-3.3TRE1
- Part No.:
- AP2202K-3.3TRE1
- Manufacturer:
- Diodes Incorporated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP2202K-3.3TRE1.pdf
- Description:
- IC REG LINEAR 3.3V 150MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,048
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AP2202K-3.3TRE1 from Diodes Incorporated is a fixed-output 3.3V, 150mA ultra-low dropout (ULDO) linear regulator in SOT-23-5 package, delivering ±1% output accuracy, 165mV dropout at full load, 75dB PSRR at 100Hz, and 1µA shutdown current. It powers noise-sensitive RF circuitry and battery-powered portable devices requiring stable low-noise bias.
For engineers reviewing the AP2202K-3.3TRE1 datasheet, AP2202K-3.3TRE1 pinout, AP2202K-3.3TRE1 application, or AP2202K-3.3TRE1 equivalent, key selection criteria include dropout voltage under 150mA load, PSRR performance at sub-kHz frequencies, enable logic compatibility, thermal protection behavior, and SOT-23-5 footprint compatibility with space-constrained PCB layouts.
Technical Context
The AP2202K-3.3TRE1 integrates a bandgap reference, error amplifier, and PMOS pass transistor to achieve ultra-low dropout and high PSRR. Its internal architecture includes overcurrent, overtemperature, and reverse-current protection circuits that operate autonomously without external components.
It uses a CMOS/TTL-compatible enable input (VIH ≥ 2.0V, VIL ≤ 0.4V) to control regulator state, and a dedicated BYP pin for connecting a 100pF capacitor to reduce output noise. The device maintains regulation across -40°C to +125°C junction temperature with guaranteed line/load regulation and ±1% initial accuracy.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3V ±1% - ensures stable bias for 3.3V logic, RF ICs, and ADC references without external feedback. |
| Max Output Current | 150mA - supports moderate-power analog/RF subsystems including LNA stages and sensor signal chains. |
| Dropout Voltage | 165mV at 150mA - enables operation from 3.465V input, critical for single-cell Li-ion or Li-poly systems. |
| PSRR | 75dB at 100Hz - suppresses low-frequency power supply ripple from switching converters feeding sensitive RF blocks. |
| Standby Current | 1µA max in shutdown - extends battery life in always-on wireless sensors and standby modes of handheld devices. |
| Output Noise | 260nV/√Hz - minimizes phase noise contribution in local oscillator supply rails and PLL VCO bias paths. |
| Thermal Protection | Integrated junction shutdown - prevents damage during sustained overload or poor PCB thermal design without external circuitry. |
Pinout & Package
SOT-23-5 surface-mount package with exposed pad (non-electrical), rated for 200°C/W θJA and 63.4°C/W θJC. Pin 2 is GND; Pin 3 is EN (active-high enable); Pin 4 is BYP (bypass capacitor connection for noise reduction); Pin 5 is VOUT.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VIN | Main input supply rail; must be ≥ VOUT + 0.5V (≥3.8V) for reliable regulation under all conditions. |
| 2 | GND | Power ground reference; connects to PCB ground plane for low-impedance return path and thermal conduction. |
| 3 | EN | Logic-compatible enable input; drives regulator ON when ≥2.0V, OFF when ≤0.4V; supports microcontroller GPIO control. |
| 4 | BYP | Bypass terminal for 100pF capacitor to GND; reduces high-frequency output noise and improves PSRR stability. |
| 5 | VOUT | Regulated 3.3V output; requires 2.2µF ceramic output capacitor (X5R/X7R) for stability and transient response. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-Low Dropout | 165mV at 150mA load enables use with marginal input headroom in compact battery-powered designs. |
| High PSRR at Low Frequency | 75dB at 100Hz rejects ripple from buck converter switching artifacts before they couple into RF sections. |
| Reverse Current Protection | Prevents backflow from VOUT to VIN during input brownout or hot-swap events, protecting upstream power sources. |
| Logic-Compatible Enable | CMOS/TTL thresholds (VIH ≥ 2.0V, VIL ≤ 0.4V) allow direct interfacing with 1.8V/3.3V/5V microcontrollers without level shifters. |
| Integrated Thermal Shutdown | Autonomous junction temperature cutoff prevents failure during sustained overload or inadequate heatsinking on small PCBs. |
Applications
| RF Front-End Power | Portable Device Core Logic |
|---|---|
|
Use Scenario: Supplies LNA, mixer, and VCO bias rails in 2.4GHz/5GHz Wi-Fi modules and Bluetooth transceivers. IC Role / Device Role / Timing Role: Ultra-low-noise 3.3V source for analog RF signal chain components requiring minimal phase noise degradation. Use Value: 260nV/√Hz output noise and 75dB PSRR prevent supply-induced jitter and adjacent-channel interference in RF receivers. |
Use Scenario: Powers 3.3V microcontroller cores, memory interfaces, and display drivers in smartphones and PDAs. IC Role / Device Role / Timing Role: Primary low-dropout regulator for system-level 3.3V domain with enable control for dynamic power gating. Use Value: 1µA shutdown current and 165mV dropout extend usable battery capacity and support deep-sleep modes. |
| Digital Still Camera Sensor Bias | Wireless Communication Baseband |
|
Use Scenario: Provides clean 3.3V supply to CMOS image sensor analog front-end and ADC reference buffers. IC Role / Device Role / Timing Role: Low-noise post-regulator following a switching DC-DC converter to isolate sensor analog section from digital noise. Use Value: ±1% output accuracy and tight load regulation ensure consistent ADC full-scale voltage and image linearity. |
Use Scenario: Supplies baseband processor I/O banks and RF transceiver digital control logic in cordless phones and IoT gateways. IC Role / Device Role / Timing Role: Stable 3.3V rail for timing-critical digital interfaces (SPI, I²C, UART) operating in noisy RF environments. Use Value: Integrated overcurrent and thermal protection eliminate need for external fault management circuitry in compact modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ULDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700-3302E/TO | 3.3V fixed, 250mA, 600mV dropout at 250mA, 1.6µA quiescent current, TO-92 package | Larger through-hole footprint; higher dropout limits use in low-input-voltage battery systems | Select when board space allows TO-92 and higher output current is required; avoid where <200mV dropout is mandatory. |
| Torex XC6206P332MR-G | 3.3V fixed, 150mA, 250mV dropout at 150mA, 1µA shutdown, SOT-23-5 package | Higher dropout and lower PSRR (60dB @ 100Hz) than AP2202K-3.3TRE1 | Acceptable for non-RF applications where cost is prioritized over noise/PSRR; not recommended for RF bias rails. |
Compared with MCP1700-3302E/TO and XC6206P332MR-G, the AP2202K-3.3TRE1 delivers superior low-noise performance (260nV/√Hz), higher PSRR (75dB), and lower dropout (165mV), making it uniquely suitable for RF and precision analog supply domains where those parameters directly impact system-level SNR and spectral purity.
Availability
AP2202K-3.3TRE1 is available at Aetrix Electronics and suitable for RF front-end power, portable device core logic, digital camera sensor bias, and wireless communication baseband applications requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant sourcing.
Supply support for AP2202K-3.3TRE1 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 company specializing in discrete, analog, and mixed-signal solutions for power management, signal integrity, and connectivity applications.
The AP2202 product line delivers ultra-low-noise, ultra-low-dropout linear regulators optimized for battery-powered and RF-sensitive systems, emphasizing PSRR, output accuracy, and thermal robustness in miniature packages.
FAQ
What is the minimum input voltage required for stable 3.3V output at 150mA?
The AP2202K-3.3TRE1 requires a minimum input voltage of VOUT + 0.5V = 3.8V for reliable regulation under all load and temperature conditions. While dropout is specified at 165mV, the datasheet recommends ≥0.5V headroom to maintain PSRR and avoid instability near dropout boundary.
Can the BYP pin be left unconnected?
No. The BYP pin must be connected to a 100pF capacitor to ground to achieve specified 260nV/√Hz output noise and 75dB PSRR. Leaving it open degrades noise performance and may cause instability in high-frequency noise-sensitive applications like RF VCO biasing.
Does AP2202K-3.3TRE1 support adjustable output voltage?
No. AP2202K-3.3TRE1 is a fixed 3.3V output variant. Adjustable versions (e.g., AP2202-ADJ) exist but require external resistor dividers on the ADJ pin and are packaged separately. This part has no internal adjustment capability.
Is thermal shutdown reversible without power cycle?
Yes. Thermal shutdown is fully automatic and self-resetting: once junction temperature falls below the hysteresis threshold (typically ~15°C below trip point), regulation resumes without requiring an enable toggle or power interruption.
AP2202K-3.3TRE1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 13.2V
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.35V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 150 µA
- Current - Supply (Max):
- 2.5 mA
- PSRR:
- 75dB (100Hz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature, Reverse Polarity
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
AP2202K-3.3TRE1 FAQ
1.How can I place an order for AP2202K-3.3TRE1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP2202K-3.3TRE1 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 AP2202K-3.3TRE1 reliable?
The price and inventory of AP2202K-3.3TRE1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP2202K-3.3TRE1 is usually 5 days.
3.What payment methods are accepted for AP2202K-3.3TRE1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP2202K-3.3TRE1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP2202K-3.3TRE1?
AP2202K-3.3TRE1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP2202K-3.3TRE1 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 AP2202K-3.3TRE1?
For technical support, including AP2202K-3.3TRE1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP2202K-3.3TRE1 requirements.
6.How does Aetrix verify that AP2202K-3.3TRE1 is sourced from the original manufacturer or authorized distributors?
All AP2202K-3.3TRE1 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 AP2202K-3.3TRE1 meets industry standards.
7.What is the process for return or replacement of AP2202K-3.3TRE1?
All AP2202K-3.3TRE1 units undergo pre-shipment inspection (PSI). If there is an issue with AP2202K-3.3TRE1, 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 AP2202K-3.3TRE1 part is unused and in its original packaging.
Return procedure for AP2202K-3.3TRE1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AP2202K-3.3TRE1 Tags
-
MIC5504-1.8YM5-TR
Microchip Technology
-
MIC5504-3.3YM5-TR
Microchip Technology
-
MIC5365-3.0YC5-TR
Microchip Technology
-
MIC5365-1.8YC5-TR
Microchip Technology
-
MIC5365-2.5YC5-TR
Microchip Technology
-
MIC5365-3.3YC5-TR
Microchip Technology
-
MIC5365-3.3YD5-TR
Microchip Technology
-
MIC5317-3.3YM5-TR
Microchip Technology
-
TLV1117LV33DCYR
Texas Instruments
-
MIC5317-3.3YMT-TZ
Microchip Technology
-
MIC5528-3.3YMT-TR
Microchip Technology
-
TLV75801PDRVR
Texas Instruments
Tech Hub
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
