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Diodes Incorporated AP7313-33SAG-7
- Part No.:
- AP7313-33SAG-7
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
AP7313-33SAG-7.pdf
- Description:
- IC REG LINEAR 3.3V 150MA SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:12,641
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Product details
Overview
AP7313-33SAG-7 from Diodes Incorporated is a 150mA fixed-output (3.3V) low-dropout linear regulator in SOT23 package, featuring 65µA quiescent current, 150mV dropout at full load, and 65dB PSRR at 100Hz-designed for battery-powered portable devices requiring stable low-power voltage regulation.
For engineers reviewing the AP7313-33SAG-7 datasheet, AP7313-33SAG-7 pinout, AP7313-33SAG-7 application, or AP7313-33SAG-7 equivalent, key selection criteria include ultra-low IQ across input range (2–6V), fast 80µs startup, stability with 1µF ceramic output capacitor, and integrated thermal shutdown, current limit, and short-circuit protection.
Technical Context
The AP7313-33SAG-7 implements a PMOS pass transistor architecture enabling low dropout and minimal quiescent current across load (0–150mA) and input (2–6V) ranges. Its bandgap reference and error amplifier deliver ±2% output voltage accuracy over –40°C to +85°C ambient.
Transient response is optimized via internal compensation supporting fast line/load step recovery without external components. Protection circuitry includes foldback current limiting (200–300mA), short-circuit clamping (~50mA), and thermal shutdown activation at ~140°C with 15°C hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3V ±2% - ensures precise rail generation for 3.3V logic and interface ICs without external feedback. |
| Max Output Current | 150mA continuous - supports moderate-power peripherals like USB PHYs, sensors, and MCU I/O banks. |
| Quiescent Current | 65µA typical at 150mA - enables multi-year battery life in always-on IoT endpoints and standby circuits. |
| Dropout Voltage | 150mV typical at 150mA - allows operation from single-cell Li-ion (3.0–4.2V) or two-cell alkaline (2.4–3.2V) sources. |
| PSRR | 65dB at 100Hz - suppresses low-frequency power supply noise from switching converters feeding the LDO input. |
| Start-up Time | 80µs - enables rapid wake-up from deep-sleep modes in GSM/EDGE baseband and DSP subsystems. |
| Stability | Guaranteed with 1µF X7R/X5R ceramic output capacitor - eliminates need for bulky tantalum or electrolytic caps, reducing board area and cost. |
Pinout & Package
SOT23-3 package (2.92 × 1.3 × 1.0 mm), RoHS-compliant "Green" molding compound, lead-free finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Input voltage supply | Accepts 2–6V DC; requires ≥1µF ceramic bypass to GND placed adjacent to pin for noise immunity and stability. |
| 2 (OUT) | Regulated output | Delivers stable 3.3V; connects directly to load and 1µF ceramic output capacitor near pin. |
| 3 (GND) | Ground reference | Common return path for IN and OUT; must be low-impedance with wide PCB trace and direct connection to power plane. |
Key Features
| Feature | Design Value |
|---|---|
| No minimum load requirement | Maintains regulation and stability down to 0mA output-enables use in intermittent-load applications like sensor polling. |
| Fast transient response | Controls overshoot/undershoot during 0→150mA load steps-critical for GSM TDMA burst-mode power delivery. |
| Integrated protection | Thermal shutdown (140°C), current limit (300mA), and short-circuit clamp (50mA)-eliminates need for external fault management circuitry. |
| Low ESR capacitor compatibility | Stable with 10–200mΩ ESR ceramics-permits high-reliability, long-life, space-efficient decoupling. |
Applications
| Portable Medical Sensors | GSM Baseband Power |
|---|---|
Use Scenario: Wearable glucose monitor operating from coin-cell battery with periodic 150mA measurement bursts. IC Role / Device Role / Timing Role: Primary 3.3V supply for analog front-end and BLE radio during active sensing cycles. Use Value: 65µA IQ extends battery life beyond 2 years; 80µs startup synchronizes power delivery with sensor trigger timing. | Use Scenario: Powering RF transceiver and digital baseband in 2G mobile handset during TDMA transmit slots. IC Role / Device Role / Timing Role: Low-noise post-regulator for VCC_IO rail, rejecting noise from main PMIC switcher. Use Value: 65dB PSRR at 100Hz prevents GSM burst-induced digital errors; fast transient response avoids voltage droop during 150mA TX peaks. |
| Industrial IoT Edge Node | USB-C Peripheral Hub |
Use Scenario: Remote environmental sensor node powered by solar-charged Li-ion, waking every 10 seconds for data acquisition. IC Role / Device Role / Timing Role: Always-on 3.3V regulator for microcontroller and LoRaWAN transceiver in ultra-low-power sleep/wake cycles. Use Value: No minimum load requirement enables true zero-current sleep; 150mV dropout maximizes usable battery voltage range. | Use Scenario: Bus-powered USB 2.0 hub providing 3.3V to downstream controllers and status LEDs from 5V VBUS. IC Role / Device Role / Timing Role: Local point-of-load regulator for 3.3V logic on hub controller PCB. Use Value: Stability with 1µF ceramic cap simplifies layout and reduces BOM count; thermal shutdown prevents overheating during sustained 150mA load. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-3302E/TT | 250mA rating, 1.6µA IQ (lower), but 600mV dropout at full load - higher dropout limits usable input range. | Preferred for micropower sensor nodes where IQ dominates lifetime, not peak load. | Select when ultra-low IQ outweighs dropout penalty and 250mA headroom is needed. |
| TPS70933DRVR | 150mA rating, 1µA IQ, but requires 2.2µF minimum output capacitance and has slower 450µs startup. | Better for always-on monitoring systems where startup delay is irrelevant and lowest possible IQ is critical. | Select when system duty cycle is <0.1% and startup latency is non-critical. |
Compared with MCP1700T-3302E/TT and TPS70933DRVR, the AP7313-33SAG-7 uniquely balances ultra-low IQ (65µA), low dropout (150mV), and fast startup (80µs) - making it optimal for burst-mode portable electronics where input voltage margin, wake-up speed, and average power are jointly constrained.
Availability
AP7313-33SAG-7 is available at Aetrix Electronics and suitable for portable medical sensors, GSM baseband power, and industrial IoT edge nodes requiring stable component supply with guaranteed long-term availability and consistent parametric performance.
Supply support for AP7313-33SAG-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 AP7313 belongs to Diodes' low-quiescent-current LDO portfolio, engineered specifically for battery-constrained portable electronics demanding simultaneous low IQ, fast transient response, and robust fault protection.
FAQ
What is the minimum input voltage required for stable 3.3V output at 150mA?
The AP7313-33SAG-7 requires VIN ≥ VOUT + VDropout = 3.3V + 0.15V = 3.45V minimum for full 150mA load under typical conditions. At 25°C and 150mA, dropout is 150mV; worst-case (over temperature, process variation) may reach 300mV, so 3.6V is recommended for design margin.
Can the AP7313-33SAG-7 operate without an output capacitor?
No - an output capacitor is mandatory for stability and transient response. The device is designed for 1–4.7µF ceramic capacitors with 10–200mΩ ESR. Omitting the output capacitor will cause oscillation and unregulated output, potentially damaging connected circuitry.
Does the AP7313-33SAG-7 require a specific PCB layout for thermal performance?
Yes - thermal resistance (θJA = 207°C/W for SOT23) assumes minimum pad layout per Diodes' AP02001: 2oz copper, single-sided FR-4, with thermal vias recommended under the exposed pad (if present) or GND pin. Inadequate copper area increases junction temperature and risks thermal shutdown under sustained 150mA load.
How does short-circuit protection behave when the output is grounded?
When VOUT falls below 200mV (e.g., hard short to GND), the AP7313-33SAG-7 activates short-circuit protection, clamping output current to ~50mA. This limits power dissipation, prevents thermal runaway, and allows safe recovery once the fault is removed - no latch-off or manual reset required.
AP7313-33SAG-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):
- 3.3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.3V @ 150mA
- Current - Output:
- 150mA
- 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
AP7313-33SAG-7 FAQ
1.How can I place an order for AP7313-33SAG-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7313-33SAG-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 AP7313-33SAG-7 reliable?
The price and inventory of AP7313-33SAG-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7313-33SAG-7 is usually 5 days.
3.What payment methods are accepted for AP7313-33SAG-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7313-33SAG-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7313-33SAG-7?
AP7313-33SAG-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7313-33SAG-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 AP7313-33SAG-7?
For technical support, including AP7313-33SAG-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7313-33SAG-7 requirements.
6.How does Aetrix verify that AP7313-33SAG-7 is sourced from the original manufacturer or authorized distributors?
All AP7313-33SAG-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 AP7313-33SAG-7 meets industry standards.
7.What is the process for return or replacement of AP7313-33SAG-7?
All AP7313-33SAG-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7313-33SAG-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 AP7313-33SAG-7 part is unused and in its original packaging.
Return procedure for AP7313-33SAG-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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