My Inquiry
My Account
Diodes Incorporated AP7333-25SRG-7
- Part No.:
- AP7333-25SRG-7
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
AP7333-25SRG-7.pdf
- Description:
- IC REG LINEAR 2.5V 300MA SOT23R
- Quantity:
- Payment:
- Shipping:
Inventory:2,800
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AP7333-25SRG-7 from Diodes Incorporated is a 300mA fixed-output (2.5V) low-dropout linear regulator in SOT23R package, featuring 65µA quiescent current, 300mV dropout at full load, 65dB PSRR at 100Hz, and stable operation with 1µF ceramic output capacitor. It serves as a power management IC for battery-powered portable electronics requiring fast transient response and ultra-low standby power.
For engineers reviewing the AP7333-25SRG-7 datasheet, AP7333-25SRG-7 pinout, AP7333-25SRG-7 application, or AP7333-25SRG-7 equivalent, key selection criteria include dropout voltage under 300mA load, thermal shutdown threshold (140°C), current limit behavior (400–600mA), and compatibility with low-ESR ceramic capacitors in space-constrained designs.
Technical Context
The AP7333-25SRG-7 integrates a PMOS pass element, precision bandgap reference, error amplifier, and protection circuitry (current limit, short-circuit clamp, thermal shutdown). Its architecture enables fast start-up (80µs) and excellent load/line transient response without external compensation.
Designed for fixed 2.5V output, it operates across 2V–6V input while maintaining ±2% output accuracy over –40°C to +85°C ambient. Built-in thermal hysteresis (15°C) ensures controlled recovery after shutdown, and its low 65µA IQ supports multi-day battery life in always-on sensor nodes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.5V ±2% - eliminates need for external feedback resistors; ensures stable core voltage for 2.5V logic or analog rails. |
| Max Output Current | 300mA continuous - sufficient to power microcontrollers, RF transceivers, or small DSPs in portable systems. |
| Quiescent Current | 65µA typical at full load - enables >1-year battery life in coin-cell–powered IoT sensors with 10µA sleep current budget. |
| Dropout Voltage | 300mV typical at 300mA - allows regulation from 2.8V input down to 2.5V output, extending usable battery range in single-cell Li-ion or alkaline systems. |
| PSRR | 65dB typical at 100Hz - suppresses low-frequency ripple from switching converters or noisy DC-DC stages upstream. |
| Start-up Time | 80µs - supports rapid wake-up from deep-sleep modes in GSM/TDMA baseband circuits with burst-load profiles. |
| Thermal Shutdown | Triggers at 140°C with 15°C hysteresis - prevents permanent damage during sustained overload or poor PCB thermal design. |
Pinout & Package
SOT23R package: 3-pin surface-mount, RoHS-compliant, green molding compound. Pin pitch 0.95mm, body size 2.9mm × 1.6mm × 1.1mm (L×W×H).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN (Pin 1) | Input voltage supply | Accepts 2V–6V; requires ≥1µF ceramic bypass capacitor placed adjacent to pin to suppress high-frequency noise and ensure stability. |
| OUT (Pin 2) | Regulated output | Delivers fixed 2.5V; stable with 1µF–4.7µF X7R/X5R ceramic capacitors; no minimum load required. |
| GND (Pin 3) | Ground reference | Common return path for IN and OUT; must connect to low-impedance ground plane to maintain PSRR and transient performance. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 65µA across full 2V–6V input range and 0–300mA load - minimizes battery drain in always-on wearable sensors. |
| Fast transient response | Stable output during 0→300mA load steps with minimal overshoot/undershoot - critical for GSM/TDMA burst-mode power delivery. |
| Low-ESR capacitor compatibility | Stable with 1µF ceramic output capacitor (10–200mΩ ESR) - reduces BOM count and PCB area vs. tantalum alternatives. |
| Integrated protection | Current limit (400–600mA), short-circuit clamp (100mA), and thermal shutdown (140°C) - eliminates need for external fault-handling circuitry. |
Applications
| Wireless LAN Modules | GSM Baseband Power |
|---|---|
Use Scenario: Powering 2.5V RF transceiver ICs and MAC controllers in compact Wi-Fi USB dongles or M.2 modules. IC Role / Device Role / Timing Role: Primary LDO supplying clean, low-noise 2.5V rail to sensitive RF front-end and digital baseband blocks. Use Value: 65dB PSRR at 100Hz rejects switching noise from nearby DC-DC converters; fast transient response maintains signal integrity during packet transmission bursts. | Use Scenario: Providing regulated 2.5V supply to GSM chipset baseband processors operating in TDMA duty-cycle mode (12.5% transmit time). IC Role / Device Role / Timing Role: Load-switching LDO delivering precise voltage during rapid 100µA ↔ 100mA load transitions every 4.615ms. Use Value: 80µs start-up and sub-100mV load transient deviation enable real-time power gating without brownout or reset events. |
| USB Peripheral Devices | Industrial Sensor Nodes |
Use Scenario: Regulating 2.5V for USB HID devices such as keyboards and mice powered directly from 5V USB VBUS. IC Role / Device Role / Timing Role: Input-to-output LDO converting unregulated 4.4–5.25V USB supply to stable 2.5V logic rail. Use Value: 300mV dropout allows full regulation even at USB low-voltage limit (4.4V); 65µA IQ extends battery backup runtime during host suspend. | Use Scenario: Powering ultra-low-power 2.5V analog sensor signal chains (e.g., temperature/humidity ICs) in battery-operated environmental monitors. IC Role / Device Role / Timing Role: Primary power source for precision ADCs, op-amps, and microcontroller peripherals in intermittent-sampling systems. Use Value: ±2% output accuracy over –40°C to +85°C ensures consistent sensor calibration; no minimum load requirement simplifies design for sleep-wake cycling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-output LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-2502E/TT (Microchip) | 250mA max output, 1.6µA IQ, 600mV dropout at 250mA, SOT23-3 | Lower IQ but lower current rating; less suitable for 300mA burst loads | Select when ultra-low standby power dominates over peak current capability |
| Torex XC6206P252MR-G (Torex) | 300mA max, 12µA IQ, 400mV dropout at 300mA, SOT23-3 | Lower IQ but higher dropout; requires ≥2.9V input for 2.5V output | Select when input voltage margin exceeds 400mV and lowest possible IQ is critical |
Compared with MCP1700T-2502E/TT and XC6206P252MR-G, the AP7333-25SRG-7 uniquely balances 300mA capability, 65µA IQ, and 300mV dropout-enabling reliable 2.5V regulation from marginal inputs (e.g., 2.8V) while supporting GSM/TDMA burst loads without external compensation.
Availability
AP7333-25SRG-7 is available at Aetrix Electronics and suitable for wireless LAN modules, GSM baseband subsystems, and USB peripheral devices requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for AP7333-25SRG-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 AP7333 belongs to Diodes' low-quiescent-current LDO family, engineered specifically for battery-powered portable electronics where extended runtime, fast dynamic response, and minimal board space are critical design constraints.
FAQ
What is the minimum input voltage required for stable 2.5V output at 300mA?
The AP7333-25SRG-7 requires a minimum input voltage of 2.8V to maintain regulated 2.5V output at 300mA load, based on its typical 300mV dropout voltage specification. At lower input voltages (e.g., 2.75V), output may drop below 2.5V due to process variation and temperature effects; design margin should include worst-case 550mV dropout per datasheet.
Can the AP7333-25SRG-7 operate without an output capacitor?
No, the AP7333-25SRG-7 requires a minimum 1µF ceramic output capacitor for stability and transient response, as confirmed in the datasheet's Application Note section. Omitting it risks oscillation, excessive overshoot/undershoot during load steps, and potential thermal shutdown under dynamic conditions.
Is the SOT23R package pin-compatible with standard SOT23?
No, the SOT23R package has reversed pinout versus standard SOT23: IN is Pin 1 (vs. Pin 3), GND is Pin 3 (vs. Pin 1), and OUT is Pin 2 (shared). This reversal is explicitly documented in the datasheet's Pin Assignment diagram and must be accounted for in PCB layout to avoid functional failure.
Does the AP7333-25SRG-7 support adjustable output voltage via external resistors?
No, the AP7333-25SRG-7 is a fixed-output device with internal resistor divider setting 2.5V; it lacks feedback (FB) or adjust (ADJ) pins. For adjustable output, Diodes offers the AP7361 series, which uses external resistors to set output voltage between 0.8V and 5.0V.
AP7333-25SRG-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):
- 6V
- Voltage - Output (Min/Fixed):
- 2.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.55V @ 300mA
- Current - Output:
- 300mA
- Current - Quiescent (Iq):
- 75 µA
- Current - Supply (Max):
- 85 µA
- PSRR:
- 65dB (100Hz)
- Control Features:
- -
- Protection Features:
- Over Current, Over Temperature, Short Circuit
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT23R
AP7333-25SRG-7 FAQ
1.How can I place an order for AP7333-25SRG-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7333-25SRG-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 AP7333-25SRG-7 reliable?
The price and inventory of AP7333-25SRG-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7333-25SRG-7 is usually 5 days.
3.What payment methods are accepted for AP7333-25SRG-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7333-25SRG-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7333-25SRG-7?
AP7333-25SRG-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7333-25SRG-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 AP7333-25SRG-7?
For technical support, including AP7333-25SRG-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7333-25SRG-7 requirements.
6.How does Aetrix verify that AP7333-25SRG-7 is sourced from the original manufacturer or authorized distributors?
All AP7333-25SRG-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 AP7333-25SRG-7 meets industry standards.
7.What is the process for return or replacement of AP7333-25SRG-7?
All AP7333-25SRG-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7333-25SRG-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 AP7333-25SRG-7 part is unused and in its original packaging.
Return procedure for AP7333-25SRG-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AP7333-25SRG-7 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.…
