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Diodes Incorporated AP7333-15SAG-7
- Part No.:
- AP7333-15SAG-7
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
AP7333-15SAG-7.pdf
- Description:
- IC REG LINEAR 1.5V 300MA SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,696
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Product details
Overview
AP7333-15SAG-7 from Diodes Incorporated is a 300mA fixed-output (1.5V) low-dropout linear regulator in SOT23 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 primary power supply for ultra-low-power microcontrollers and RF front-ends in portable electronics.
For engineers reviewing the AP7333-15SAG-7 datasheet, AP7333-15SAG-7 pinout, AP7333-15SAG-7 application, or AP7333-15SAG-7 equivalent, key selection criteria include dropout voltage under 300mA load, thermal shutdown threshold at 140°C, fast 80µs start-up time, and compatibility with single-layer PCB layouts using minimal 1µF output capacitance.
Technical Context
The AP7333-15SAG-7 integrates a PMOS pass element, bandgap reference, error amplifier, and protection circuitry (current limit, short-circuit, thermal shutdown) in a monolithic structure. Its low-ESR stability enables use with 1µF X7R/X5R ceramic capacitors without external compensation.
Designed for battery-powered systems, it maintains regulation across -40°C to +85°C ambient, delivers ±2% output accuracy over temperature and load, and achieves 0.01–0.20%/V line regulation - critical for variable-input sources like Li-ion cells discharging from 4.2V to 2.8V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.5V ±2% over -40°C to +85°C; ensures stable core voltage for 1.5V logic and low-voltage sensors. |
| Max Output Current | 300mA continuous; supports moderate-power peripherals such as BLE radios and 8-bit MCUs without derating. |
| Quiescent Current | 65µA typical at full load; minimizes standby power loss in always-on IoT nodes. |
| Dropout Voltage | 300mV typical at 300mA; allows operation down to 1.8V input, extending usable battery range. |
| PSRR | 65dB typical at 100Hz; suppresses ripple from noisy DC-DC converters feeding the LDO input. |
| Start-up Time | 80µs typical; enables rapid wake-up from deep-sleep modes in energy-harvesting applications. |
| Thermal Shutdown | Triggers at 140°C junction temperature with 15°C hysteresis; prevents permanent damage during sustained overload. |
Pinout & Package
SOT23-3 package (2.92mm × 1.3mm × 1.0mm), RoHS-compliant, green molding compound, lead-free finish. Pin-compatible with industry-standard SOT23 footprint (Diodes AP02001 pad layout recommended).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Input voltage supply | Accepts 2V–6V input; requires ≥1µF ceramic bypass capacitor placed adjacent to pin for noise immunity. |
| 2 (OUT) | Regulated output | Delivers stable 1.5V; connects directly to load with minimal trace length to preserve transient response. |
| 3 (GND) | Power ground reference | Common return path for IN and OUT; must tie to low-impedance ground plane to avoid regulation error. |
Key Features
| Feature | Design Value |
|---|---|
| No minimum load requirement | Maintains regulation at 0mA output - eliminates need for dummy loads in sleep-mode circuits. |
| Fast transient response | Stabilizes within microseconds during 0–300mA load steps - essential for GSM/TDMA burst-mode operation. |
| Short-circuit current limit | Clamps to ~100mA when VOUT < 200mV - protects downstream circuitry during accidental shorts. |
| Low ESR capacitor support | Stable with 10–200mΩ ESR output caps - enables use of compact, low-cost X7R ceramics instead of tantalum. |
Applications
| Wireless Sensor Node | GSM Baseband Power |
|---|---|
Use Scenario: Battery-powered Zigbee/Thread node operating in intermittent transmit mode with 10ms active bursts every 5 seconds. IC Role / Device Role / Timing Role: Primary 1.5V supply for MCU and RF transceiver; regulates voltage during rapid 0–250mA load transitions. Use Value: 80µs start-up and fast transient response prevent brown-out during wake-up; 65µA IQ extends 2xAA battery life beyond 5 years. | Use Scenario: Power rail for GSM baseband IC requiring clean 1.5V under TDMA 12.5% duty cycle. IC Role / Device Role / Timing Role: Low-noise post-regulator after switching converter; supplies digital core during high-current transmit pulses. Use Value: 65dB PSRR at 100Hz attenuates switching ripple; controlled overshoot/undershoot avoids logic errors in timing-critical baseband blocks. |
| USB-C Peripherals | Industrial HMI Controller |
Use Scenario: Self-powered USB-C mouse/keyboard drawing peak 180mA during button press or scroll events. IC Role / Device Role / Timing Role: Local 1.5V regulator for touch controller and LED drivers; powered from 5V USB bus via internal LDO. Use Value: 300mV dropout enables full 1.5V output even as USB input sags to 3.3V; SOT23 footprint fits tight mechanical constraints. | Use Scenario: Fanless industrial HMI panel with ARM Cortex-M4 MCU and capacitive touchscreen, operating in -40°C to +85°C ambient. IC Role / Device Role / Timing Role: Backup 1.5V rail for real-time clock and SRAM retention during main supply interruption. Use Value: Guaranteed operation across full industrial temperature range; thermal shutdown prevents latch-up in sealed enclosures. |
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-1502E/TT | 250mA max output, 1.6µA IQ, 600mV dropout at 250mA | Ultra-low IQ suits multi-year battery apps; lower current rating limits use with higher-power peripherals | Select when standby current dominates design priority and load stays below 250mA |
| TPS7A0515PDBVR | 200mA max output, 25µA IQ, 170mV dropout at 200mA, enable pin included | Lower dropout and enable control support advanced power sequencing; reduced current capacity restricts high-pulse loads | Select when system requires enable-controlled power gating and input voltage is tightly constrained near 1.7V |
Compared with MCP1700T-1502E/TT and TPS7A0515PDBVR, the AP7333-15SAG-7 uniquely balances 300mA drive capability, 65µA IQ, and 300mV dropout - making it optimal for cost-sensitive, medium-current portable designs where thermal margin and transient fidelity are critical.
Availability
AP7333-15SAG-7 is available at Aetrix Electronics and suitable for wireless sensor nodes, GSM baseband subsystems, and USB-C peripheral power management requiring stable component supply, consistent parametric performance, and long-term production continuity.
Supply support for AP7333-15SAG-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-constrained applications demanding fast transient response, wide input range, and robust fault protection without external components.
FAQ
What is the maximum input voltage for AP7333-15SAG-7?
The absolute maximum input voltage is 7V, but the recommended operating range is 2V to 6V. Exceeding 6V risks violating safe operating area limits and may trigger thermal shutdown under load. Operation at 7V is only permissible for brief transients, not continuous use.
Can AP7333-15SAG-7 operate without an output capacitor?
No - an output capacitor is mandatory for stability. The device is designed to be stable with 1µF to 4.7µF ceramic capacitors (X7R/X5R, 10–200mΩ ESR). Omitting the output capacitor causes oscillation and unregulated output, potentially damaging connected circuitry.
Does AP7333-15SAG-7 require a minimum load current?
No minimum load is required. The regulator maintains regulation and stability from 0mA to 300mA output current, verified across -40°C to +85°C ambient. This eliminates the need for bleed resistors in low-power sleep states.
How does thermal shutdown behave under sustained overload?
When junction temperature reaches ~140°C, the output disables; recovery occurs at ~125°C due to 15°C hysteresis. Under continuous overload, this results in on-off cycling - limiting average power dissipation and preventing permanent damage, though system-level thermal design should avoid sustained cycling.
AP7333-15SAG-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):
- 1.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- 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:
- SOT-23-3
AP7333-15SAG-7 FAQ
1.How can I place an order for AP7333-15SAG-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7333-15SAG-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 AP7333-15SAG-7 reliable?
The price and inventory of AP7333-15SAG-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7333-15SAG-7 is usually 5 days.
3.What payment methods are accepted for AP7333-15SAG-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7333-15SAG-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7333-15SAG-7?
AP7333-15SAG-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7333-15SAG-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 AP7333-15SAG-7?
For technical support, including AP7333-15SAG-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7333-15SAG-7 requirements.
6.How does Aetrix verify that AP7333-15SAG-7 is sourced from the original manufacturer or authorized distributors?
All AP7333-15SAG-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 AP7333-15SAG-7 meets industry standards.
7.What is the process for return or replacement of AP7333-15SAG-7?
All AP7333-15SAG-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7333-15SAG-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 AP7333-15SAG-7 part is unused and in its original packaging.
Return procedure for AP7333-15SAG-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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