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Diodes Incorporated AP7315-22FS4-7B
- Part No.:
- AP7315-22FS4-7B
- Manufacturer:
- Diodes Incorporated
- Package:
- 4-XDFN Exposed Pad
- Datasheet:
-
AP7315-22FS4-7B.pdf
- Description:
- IC REG LINEAR 2.2V 150MA 4DFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,172
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Product details
Overview
AP7315-22FS4-7B from Diodes Incorporated is a 2.2V fixed-output, 150mA low-dropout linear regulator with ±1% output voltage accuracy, 75dB PSRR at 1kHz, 60µVrms output noise (10Hz–100kHz), and 35µA quiescent current. It features CMOS-based architecture, enable control, and is optimized for RF supply and portable media applications requiring stable, low-noise biasing.
For engineers reviewing the AP7315-22FS4-7B datasheet, AP7315-22FS4-7B pinout, AP7315-22FS4-7B application, or AP7315-22FS4-7B equivalent, this LDO delivers verified performance in compact X2-DFN1010-4 packaging with validated thermal dissipation via exposed thermal pad, precise enable threshold (1.3V high, 0.5V low), and guaranteed 150mA load capability across –40°C to +85°C.
Technical Context
The AP7315-22FS4-7B integrates a precision voltage reference, error amplifier, current-limit circuit, and CMOS pass transistor - enabling fast line/load transient response and stable operation with only 0.47µF input/output ceramic capacitors. Its non-discharge architecture maintains output voltage during shutdown without external discharge path.
Designed for low-power handheld systems, it operates from 1.7V to 5.25V input, achieves dropout as low as 210mV at 150mA (for VOUT = 2.2V), and provides EN-controlled on/off functionality with <1.0µA standby current. The thermal pad is internally unconnected but recommended for PCB copper tie to GND for enhanced thermal performance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.2V ±1% - ensures stable bias for 2.2V logic rails or analog sensors without external feedback. |
| Max Output Current | 150mA - sufficient for powering RF transceivers, camera modules, or baseband ICs in portable devices. |
| PSRR | 75dB at 1kHz - suppresses switching noise from adjacent DC/DC converters in mixed-signal PCBs. |
| Output Noise | 60µVrms (10Hz–100kHz) - minimizes phase jitter in clock-sensitive circuits like RF synthesizers. |
| Quiescent Current | 35µA typical - extends battery life in always-on sensor nodes or standby modes of wireless adapters. |
| Dropout Voltage | 210mV at 150mA - enables regulation from 2.41V input, supporting single-cell Li-ion or Li-poly battery operation. |
| Enable Threshold | VEN(H) = 1.3V min, VEN(L) = 0.5V max - compatible with 1.8V/3.3V GPIOs without level-shifting. |
Pinout & Package
X2-DFN1010-4 package: 1.0mm × 1.0mm, 0.4mm pitch, 4-pin leadless DFN with exposed thermal pad (non-electrical, recommended for GND-connected copper pour).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VOUT (Pin 1) | Regulated power output | Delivers clean 2.2V to load; requires 0.47µF ceramic capacitor placed adjacent to pin for stability. |
| GND (Pin 2) | Power ground reference | Primary return path for load current; must connect directly to low-impedance ground plane. |
| EN (Pin 3) | Enable control input | Active-high logic input; floating state disables regulator - tie to VIN if always-on operation required. |
| VIN (Pin 4) | Unregulated input supply | Accepts 1.7–5.25V; requires 0.47µF decoupling capacitor placed within 2mm of pin to suppress supply glitches. |
| Thermal Pad | Thermal dissipation surface | Non-functional terminal; solder to ≥25mm² GND copper area to maintain TJ ≤ 125°C at 150mA. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low noise output | 60µVrms enables use in RF front-end biasing without degrading SNR or EVM. |
| High PSRR at audio frequencies | 75dB at 1kHz rejects ripple from buck converters powering baseband processors. |
| Sub-1µA shutdown current | 0.01µA typical ISTANDBY preserves battery charge during deep sleep in IoT endpoints. |
| Wide input voltage range | 1.7–5.25V supports direct connection to single-cell batteries or multi-rail system supplies. |
| CMOS process technology | Enables low RDS(ON), no reverse current flow, and compatibility with low-VGS control signals. |
Applications
| RF Power Amplifier Bias | Camera Sensor Core Supply |
|---|---|
|
Use Scenario: Providing clean, low-noise bias to GaAs or SiGe RF power amplifiers in 4G/5G mobile handsets. IC Role / Device Role / Timing Role: Primary LDO delivering regulated 2.2V to PA collector/drain rail, rejecting switching noise from PMIC DC/DC outputs. Use Value: 60µVrms noise prevents AM-to-PM distortion; 75dB PSRR maintains EVM <2.5% under dynamic load modulation. |
Use Scenario: Powering image sensor analog core (ADC reference, pixel array bias) in smartphone rear cameras. IC Role / Device Role / Timing Role: Low-noise post-regulator supplying 2.2V to sensor's analog domain, isolated from noisy digital SoC rails. Use Value: ±1% accuracy ensures consistent ADC full-scale voltage; 35µA IQ enables always-on low-power preview mode. |
| Wireless Adapter PHY Supply | Portable Media Player Audio Codec |
|
Use Scenario: Delivering stable 2.2V to Wi-Fi/BT transceiver PHY layers in USB dongles and embedded modules. IC Role / Device Role / Timing Role: Enable-controlled LDO providing on-demand power to RF PHY during packet transmission bursts. Use Value: 150mA capability supports peak TX current; 210mV dropout allows operation from 2.41V input (single Li-ion cell). |
Use Scenario: Supplying DAC/ADC analog section in portable music players with OLED displays and Bluetooth streaming. IC Role / Device Role / Timing Role: Precision LDO generating 2.2V reference for audio codec's internal DAC and headphone driver stages. Use Value: 60µVrms noise prevents audible hiss; ±1% accuracy maintains THD+N <0.005% across temperature. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700-2202E/TO | 250mA output, 6µA IQ, SOT23-5 package, no enable pin - requires external pull-up for always-on use. | Lacks EN control; higher output current margin but larger footprint and no shutdown mode. | Choose when ultra-low IQ dominates over enable flexibility and board space is not constrained. |
| Torex XC6206P222MR-G | 150mA output, 1.0µA IQ, SOT23-3, fixed 2.2V, no enable - simpler interface but no active control. | No enable function; lower IQ benefits long-term battery life but eliminates dynamic power gating. | Prefer for cost-sensitive, always-on applications where enable control is unnecessary and standby current is critical. |
Compared with MCP1700-2202E/TO and XC6206P222MR-G, the AP7315-22FS4-7B uniquely combines 35µA IQ, integrated enable, ±1% accuracy, and 1.0mm² X2-DFN1010-4 packaging - making it optimal for space-constrained, battery-powered RF and imaging subsystems requiring both precision and controllability.
Availability
AP7315-22FS4-7B is available at Aetrix Electronics and suitable for RF supply, camera sensor biasing, and portable media player audio subsystems requiring stable component supply, tight voltage tolerance, and low-noise performance in miniaturized designs.
Supply support for AP7315-22FS4-7B 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 power management, signal integrity, and protection solutions for consumer, industrial, and automotive markets.
The AP7315 series belongs to Diodes' high-PSRR, low-noise LDO product line, engineered specifically for noise-sensitive portable electronics - emphasizing small footprint, low IQ, and robust transient response in battery-powered RF and imaging applications.
FAQ
What is the maximum input voltage rating for AP7315-22FS4-7B?
The absolute maximum input voltage is 6.0V. Operation beyond this risks permanent damage. For reliable continuous use, the recommended input range is 1.7V to 5.25V - ensuring proper regulation while maintaining thermal safety margins at full 150mA load.
Does AP7315-22FS4-7B include an internal discharge path for VOUT during shutdown?
No. AP7315-22FS4-7B is the non-discharge variant (indicated by absence of "D" in part number). When disabled, VOUT remains floating unless externally discharged. For automatic VOUT discharge, select AP7315D-22FS4-7B, which integrates a 30Ω NMOS discharge switch between VOUT and GND.
Can AP7315-22FS4-7B be used with ceramic capacitors smaller than 0.47µF?
No. The datasheet specifies 0.47µF minimum for both CIN and COUT to ensure stability and transient response. Using smaller values may cause oscillation or excessive overshoot during load steps. Low-ESR X5R/X7R ceramics are mandatory; tantalum or aluminum electrolytics are not recommended.
How should the thermal pad on the X2-DFN1010-4 package be handled in PCB layout?
The thermal pad is electrically isolated and must not serve as a functional GND connection. Instead, connect it to a ≥25mm² copper pour tied to the main GND plane using ≥4 thermal vias (0.3mm diameter). This configuration reduces junction-to-board thermal resistance to ~120°C/W, preventing thermal shutdown at rated load.
AP7315-22FS4-7B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 4-XDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 5.25V
- Voltage - Output (Min/Fixed):
- 2.2V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.38V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 60 µA
- Current - Supply (Max):
- 100 µA
- PSRR:
- 75dB (1kHz)
- Control Features:
- -
- Protection Features:
- Over Current
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- X2-DFN1010-4
AP7315-22FS4-7B FAQ
1.How can I place an order for AP7315-22FS4-7B through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7315-22FS4-7B 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 AP7315-22FS4-7B reliable?
The price and inventory of AP7315-22FS4-7B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7315-22FS4-7B is usually 5 days.
3.What payment methods are accepted for AP7315-22FS4-7B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7315-22FS4-7B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7315-22FS4-7B?
AP7315-22FS4-7B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7315-22FS4-7B 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 AP7315-22FS4-7B?
For technical support, including AP7315-22FS4-7B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7315-22FS4-7B requirements.
6.How does Aetrix verify that AP7315-22FS4-7B is sourced from the original manufacturer or authorized distributors?
All AP7315-22FS4-7B 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 AP7315-22FS4-7B meets industry standards.
7.What is the process for return or replacement of AP7315-22FS4-7B?
All AP7315-22FS4-7B units undergo pre-shipment inspection (PSI). If there is an issue with AP7315-22FS4-7B, 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 AP7315-22FS4-7B part is unused and in its original packaging.
Return procedure for AP7315-22FS4-7B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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