My Inquiry
My Account
Diodes Incorporated AP7311-WG-7
- Part No.:
- AP7311-WG-7
- Manufacturer:
- Diodes Incorporated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP7311-WG-7.pdf
- Description:
- IC REG LIN POS ADJ 150MA SOT25
- Quantity:
- Payment:
- Shipping:
Inventory:13,777
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AP7311-WG-7 from Diodes Incorporated is a 150mA, fixed-output (1.8V), low-dropout linear regulator in SOT25 package with 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 AP7311-WG-7 datasheet, AP7311-WG-7 pinout, AP7311-WG-7 application, or AP7311-WG-7 equivalent, key selection criteria include fast 80µs startup, stability with 1µF ceramic output capacitor, EN-controlled on/off sequencing, and thermal shutdown at 140°C - critical for compact, thermally constrained embedded systems.
Technical Context
The AP7311-WG-7 implements a P-channel MOSFET pass element with internal 0.4V bandgap reference and error amplifier, enabling adjustable (via ADJ pin) or fixed-output configurations. Its architecture delivers fast transient response by optimizing loop gain and phase margin for 1µF–4.7µF ceramic capacitors.
EN pin logic-high activation (VIH ≥ 1.4V) enables precise power sequencing; built-in current limit (~300mA), short-circuit protection (~50mA), and thermal shutdown (140°C trip, 15°C hysteresis) operate independently of external components to ensure fault resilience without auxiliary circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 150mA maximum continuous - supports microcontrollers, sensors, and RF front-ends in portable designs |
| Quiescent Current | 65µA typical at full load - extends battery life in always-on or low-duty-cycle applications |
| Dropout Voltage | 150mV typical at 150mA - enables regulation from 2.0V input down to 1.8V output |
| PSRR | 65dB at 100Hz - suppresses low-frequency noise from switching power supplies or noisy rails |
| Start-up Time | 80µs - allows rapid wake-up from deep-sleep states in GSM/TDMA baseband circuits |
| Thermal Shutdown | 140°C junction temperature - protects against sustained overload or poor PCB heat sinking |
| Operating Temp | −40°C to +85°C ambient - qualified for industrial and consumer portable environments |
Pinout & Package
SOT25 (5-pin, 1.6mm × 2.9mm × 1.1mm) surface-mount package with RoHS-compliant lead-free finish and "Green" molding compound (no Br/Sb).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - IN | Input voltage supply | Accepts 2V–6V; requires ≥1µF ceramic bypass capacitor placed adjacent to pin |
| 2 - GND | Power ground reference | Common return path for IN, OUT, EN, and internal circuitry; must connect to low-impedance ground plane |
| 3 - EN | Enable control input | Active-high logic interface (VIH ≥ 1.4V); ties to IN for always-on operation |
| 4 - NC | No connection | Internally unconnected; must remain floating - not for grounding or routing |
| 5 - OUT | Regulated output voltage | Delivers fixed 1.8V ±2% with ≤0.6% load regulation; stable with 1µF–4.7µF X5R/X7R ceramic capacitor |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low IQ across load range | 65µA typ. at 150mA - eliminates need for external disable during standby, simplifying power management |
| Fast transient response | Stable 0→150mA load step with minimal overshoot/undershoot - sustains DSP/GSM chipset voltage integrity during burst-mode operation |
| Single-capacitor stability | Guaranteed stable with 1µF ceramic output capacitor - reduces BOM count and PCB area vs. traditional LDOs requiring ≥10µF |
| Integrated protection suite | Current limit (300mA), short-circuit clamp (50mA), and thermal shutdown (140°C) - removes need for external fuses or thermal sensors |
| Wide input compatibility | 2V–6V input range - interfaces directly with Li-ion (3.0–4.2V), NiMH (2.4–3.6V), or dual-cell alkaline (2.0–3.2V) sources |
Applications
| Portable Medical Sensors | GSM Baseband Power |
|---|---|
Use Scenario: Wearable ECG patch operating from single Li-ion cell with intermittent Bluetooth transmission. IC Role / Device Role / Timing Role: Primary 1.8V supply for ultra-low-power MCU and analog front-end, enabled synchronously with radio activity. Use Value: 65µA IQ minimizes idle drain; 80µs startup ensures immediate voltage availability upon wake-up; 150mV dropout preserves runtime down to 1.95V cell voltage. |
Use Scenario: TDMA-based GSM handset baseband IC requiring clean, rapidly responsive 1.8V rail during transmit/receive bursts. IC Role / Device Role / Timing Role: Local LDO delivering regulated 1.8V to DSP and modem core, dynamically enabled via baseband controller GPIO. Use Value: Fast 0→150mA transient response prevents brownout during 12.5% duty-cycle TX pulses; 65dB PSRR rejects switching noise from PMIC buck converters. |
| Industrial Handheld Terminals | USB-Powered Peripherals |
Use Scenario: Ruggedized barcode scanner powered by 3.3V USB port, supplying 1.8V to image sensor and FPGA configuration logic. IC Role / Device Role / Timing Role: Secondary LDO isolating noise-sensitive imaging circuitry from shared USB VBUS rail. Use Value: 1µF ceramic stability eliminates bulk tantalum capacitor; thermal shutdown prevents damage during extended scanning under high ambient temperature. |
Use Scenario: Low-cost USB audio adapter drawing power solely from host port, powering 1.8V DAC and headphone amp. IC Role / Device Role / Timing Role: Fixed-output LDO decoupling digital and analog sections while maintaining tight output accuracy. Use Value: ±2% output voltage tolerance ensures consistent DAC reference; no-load stability allows rail to remain active during USB suspend without external load resistor. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-quiescent-current LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700-1802E/TO | 250mA rating, 1.6µA IQ, SOT23-5 package, 600mV dropout at 250mA | Lower IQ but higher dropout limits use below 2.4V input; lacks EN pin | Select when ultra-low standby current outweighs need for enable control and wide VIN range |
| Torex XC6206P182MR-G | 150mA rating, 1µA IQ, SOT23-5, 350mV dropout at 150mA, no EN pin | Superior IQ but 2.3× higher dropout restricts operation above 2.15V input for 1.8V output | Select only for battery voltages ≥2.5V where dropout headroom is sufficient and enable functionality is unnecessary |
Compared with MCP1700-1802E/TO and XC6206P182MR-G, the AP7311-WG-7 uniquely balances 65µA IQ, 150mV dropout, and integrated EN control in SOT25 - making it optimal for 2V–6V input systems requiring dynamic power gating and robust thermal/current protection without external components.
Availability
AP7311-WG-7 is available at Aetrix Electronics and suitable for portable medical sensors, GSM baseband subsystems, industrial handheld terminals, and USB-powered peripherals requiring stable component supply with guaranteed long-term lifecycle support.
Supply support for AP7311-WG-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 AP7311 belongs to Diodes' low-dropout linear regulator product line, engineered specifically for battery-constrained portable electronics demanding ultra-low quiescent current, fast transient response, and integrated fault protection in minimal footprint packages.
FAQ
What is the minimum input voltage required for AP7311-WG-7 to regulate 1.8V output?
The AP7311-WG-7 maintains regulation down to 2.0V input due to its 150mV typical dropout voltage at 150mA. At light loads, dropout decreases further - enabling stable 1.8V output even with input as low as 1.95V, which extends usable capacity from single-cell Li-ion batteries.
Can AP7311-WG-7 operate without an external output capacitor?
No - the AP7311-WG-7 requires a minimum 1µF ceramic output capacitor (X5R/X7R, 10–200mΩ ESR) for stability and transient performance. Omitting it causes oscillation and voltage overshoot; larger values (up to 4.7µF) improve load-step response but are not mandatory for basic regulation.
Is the EN pin compatible with 1.8V logic controllers?
Yes - the EN pin has VIH = 1.4V minimum, making it directly compatible with 1.8V GPIO outputs. With IEN < ±1µA, it imposes negligible loading on the controller, and internal hysteresis ensures clean turn-on/turn-off without chatter near threshold voltages.
How does thermal shutdown behave under sustained overload?
When junction temperature reaches ~140°C, the AP7311-WG-7 disables the output and remains off until temperature drops to ~125°C (15°C hysteresis). Under continuous overload, this results in controlled on/off cycling - limiting average power dissipation and preventing permanent damage without external thermal management.
AP7311-WG-7 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:
- Adjustable
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 5V
- Voltage Dropout (Max):
- 0.3V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 75 µA
- Current - Supply (Max):
- 85 µA
- PSRR:
- 65dB (100Hz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature, Short Circuit
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-25
AP7311-WG-7 FAQ
1.How can I place an order for AP7311-WG-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7311-WG-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 AP7311-WG-7 reliable?
The price and inventory of AP7311-WG-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7311-WG-7 is usually 5 days.
3.What payment methods are accepted for AP7311-WG-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7311-WG-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7311-WG-7?
AP7311-WG-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7311-WG-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 AP7311-WG-7?
For technical support, including AP7311-WG-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7311-WG-7 requirements.
6.How does Aetrix verify that AP7311-WG-7 is sourced from the original manufacturer or authorized distributors?
All AP7311-WG-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 AP7311-WG-7 meets industry standards.
7.What is the process for return or replacement of AP7311-WG-7?
All AP7311-WG-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7311-WG-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 AP7311-WG-7 part is unused and in its original packaging.
Return procedure for AP7311-WG-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AP7311-WG-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.…
