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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Voltage Regulators - Linear, Low Drop Out (LDO) Regulators

Diodes Incorporated AP7340-11FS4-7

Name: AP7340-11FS4-7
Brand: Diodes Incorporated
SKU: AP7340-11FS4-7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AP7340-11FS4-7

Manufacturer:: Diodes Incorporated

Category:: Voltage Regulators - Linear, Low Drop Out (LDO) Regulators

Package:: 4-XDFN Exposed Pad

Datasheet:: AP7340-11FS4-7.pdf

Description:: IC REG LINEAR 1.1V 150MA 4DFN

Quantity:: RFQ Add To RFQ list

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Inventory:6,430

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Product details

Overview

AP7340-11FS4-7 from Diodes Incorporated is a 150mA, fixed 1.1V low-dropout linear regulator in X2-DFN1010-4 package, featuring ±1% output voltage accuracy, 75dB PSRR at 1kHz, 60µV_rms output noise (10Hz–100kHz), and 35µA quiescent current. It integrates enable control, current limiting, and thermal protection, and is optimized for RF supply rails in portable wireless communication devices.

For engineers reviewing the AP7340-11FS4-7 datasheet, AP7340-11FS4-7 pinout, AP7340-11FS4-7 application, or AP7340-11FS4-7 equivalent, key selection criteria include dropout voltage at 150mA (0.50–0.62V for 1.1V output), EN logic thresholds (0–0.5V low, 1.3–5.25V high), thermal pad handling, and compatibility with 0.47µF ceramic input/output capacitors.

Technical Context

The AP7340-11FS4-7 employs a CMOS-based LDO architecture with an integrated voltage reference and error amplifier to maintain tight regulation across load (0–150mA) and line (1.7–5.25V input) variations. Its fold-back short-circuit protection limits output current to ~55mA during VOUT-to-GND faults.

It features non-discharge output behavior (AP7340 variant), meaning the output remains floating when disabled-critical for systems requiring isolation between power domains. The thermal pad must be connected to GND or left open per layout guidelines, not used as sole GND electrode.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	Fixed 1.1V ±1% at +25°C; ±1.5% over –40°C to +85°C - ensures stable core bias for low-voltage digital ICs
Max Output Current	150mA continuous - supports baseband processors or RF front-end ICs in compact handheld designs
PSRR	75dB at 1kHz - suppresses switching noise from adjacent DC/DC converters feeding shared input rails
Output Noise	60µV_rms (10Hz–100kHz) - preserves signal integrity in sensitive analog/RF sections like VCO or LNA supplies
Quiescent Current	35µA typical - enables >1-year battery life in always-on sensor or standby-mode subsystems
Dropout Voltage	0.50–0.62V at 150mA - allows operation from single-cell Li-ion (3.0V min) down to 1.7V input while sustaining 1.1V output
Enable Thresholds	V_EN(H) ≥1.3V, V_EN(L) ≤0.5V - compatible with 1.8V/3.3V GPIO without level-shifting

Pinout & Package

X2-DFN1010-4 package: 1.0mm × 1.0mm footprint, 0.4mm height, wettable flank leads, thermal pad on underside.

Pin/Terminal	Circuit Role	Design Meaning
PIN1 (VOUT)	Regulated Power Output	Delivers clean 1.1V to load; requires 0.47µF ceramic capacitor placed adjacent to minimize impedance
PIN2 (GND)	Analog & Power Ground Reference	Primary return path for output current and internal circuitry; must connect directly to low-impedance ground plane
PIN3 (EN)	Active-High Enable Control	Drives regulator ON/OFF; must not float - tie to VIN if unused; 1.0µA max leakage ensures low-power control
PIN4 (VIN)	Unregulated Input Supply	Accepts 1.7–5.25V; requires 0.47µF decoupling cap near pin to suppress supply transients
Thermal Pad	Thermal Dissipation Interface	Not electrically functional; recommended to connect to GND pour for thermal relief (PD = 400mW max)

Key Features

Feature	Design Value
High PSRR	75dB @ 1kHz - rejects ripple from noisy switchers powering multi-rail PMICs
Ultra-Low Noise	60µV_rms (10Hz–100kHz) - avoids phase noise degradation in RF synthesizers
Low Quiescent Current	35µA - extends battery runtime in always-on IoT edge nodes
Tight Output Accuracy	±1% @ +25°C - ensures reliable operation of 1.1V-core microcontrollers without external trimming
Small Footprint	X2-DFN1010-4 (1.0×1.0mm) - enables dense PCB layouts in space-constrained mobile modules

Applications

Smartphone Baseband Core Supply

RF Transceiver Bias Rail

Use Scenario: Powers ARM Cortex-A/M series application processor cores requiring stable 1.1V at up to 120mA peak current.

IC Role / Device Role / Timing Role: Primary LDO delivering regulated core voltage; responds to dynamic DVFS transitions within 10µs.

Use Value: Low dropout (0.5V) enables operation from partially discharged batteries; ±1% accuracy prevents timing margin violations.

Use Scenario: Supplies bias voltage to LTE/Wi-Fi RF transceivers where supply noise directly impacts EVM and ACLR.

IC Role / Device Role / Timing Role: Clean post-regulator for RF IC VDD_IO or VDD_A blocks; operates in parallel with DC/DC converters.

Use Value: 60µV_rms noise and 75dB PSRR prevent spectral regrowth and meet 3GPP RF emission masks.

Portable Camera Image Sensor

Wireless Adapter PHY Layer

Use Scenario: Provides 1.1V to CIS (CMOS Image Sensor) analog front-end and column ADC circuitry.

IC Role / Device Role / Timing Role: Low-noise analog rail isolating sensor pixel array from digital switching noise.

Use Value: Sub-100µV noise floor preserves SNR in low-light imaging; fast load transient response minimizes frame artifacts.

Use Scenario: Powers USB 2.0 or PCIe Gen1 PHY logic in compact dongles and M.2 Wi-Fi adapters.

IC Role / Device Role / Timing Role: Standby/active mode LDO controlled via host GPIO; enables rapid wake-from-sleep (<10µs turn-on).

Use Value: 35µA I_Q reduces idle power; EN pin compatibility with 1.8V logic eliminates level-shifters.

Equivalent & Alternatives

The following parts are listed as comparable options for similar LDO regulator applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
AP7341-11FS4-7	Includes active discharge (VOUT pulled to GND when disabled); otherwise identical specs and pinout	Required where fast output discharge prevents back-powering or latch-up in multi-rail systems	Select only if system-level design mandates controlled VOUT decay; adds 30Ω discharge path when disabled
MCP1700T-1102E/TT	100mA max output, 6µA I_Q, 1.1V ±2% accuracy, SOT-23-3 package	Limited to ultra-low-power sensors or MCU peripherals; lacks enable pin and thermal pad	Choose for cost-sensitive, low-current applications where 150mA headroom and DFN thermal performance are unnecessary

Compared with AP7340-11FS4-7, AP7341-11FS4-7 adds discharge functionality at no penalty to noise or PSRR, while MCP1700T-1102E/TT trades output capability and package efficiency for lower quiescent current and simpler packaging-making each suitable for distinct power architecture tiers.

Availability

AP7340-11FS4-7 is available at Aetrix Electronics and suitable for smartphone baseband supply, RF transceiver bias, portable camera sensor rails, and wireless adapter PHY layer applications requiring stable component supply, consistent parametric performance, and long-term manufacturing continuity.

Supply support for AP7340-11FS4-7 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 semiconductor company specializing in discrete, analog, and mixed-signal solutions for power management, signal integrity, and connectivity applications.

The AP7340 belongs to Diodes' high-PSRR, low-noise LDO family designed specifically for noise-sensitive portable electronics-emphasizing small size, precision regulation, and robust transient response in battery-powered RF and imaging systems.

FAQ

What is the minimum input voltage required for AP7340-11FS4-7 to regulate 1.1V output at 150mA?

The minimum input voltage is determined by dropout: 1.1V + 0.62V = 1.72V. Per datasheet, the device guarantees operation down to 1.7V input across temperature, but at 150mA load and –40°C, the upper dropout bound (0.62V) applies-so 1.72V is the practical minimum for full-spec regulation at worst-case conditions.

Can the thermal pad of AP7340-11FS4-7 be left unconnected in PCB layout?

Yes-the thermal pad may be left electrically unconnected per datasheet guidance. However, Diodes recommends connecting it to a large copper pour tied to GND for optimal thermal dissipation. It must never serve as the sole GND connection; dedicated PIN2 (GND) must carry return current.

Does AP7340-11FS4-7 include reverse current protection?

No. The AP7340-11FS4-7 does not integrate reverse current blocking. If VOUT exceeds VIN (e.g., during hot-swap or backup battery scenarios), current can flow backward through the pass FET. External protection diodes or ideal diode controllers are required in such architectures.

Is AP7340-11FS4-7 RoHS and halogen-free compliant?

Yes. AP7340-11FS4-7 is fully RoHS 2 (2011/65/EU) compliant with no purposely added lead, and certified halogen- and antimony-free ("Green"): Br & Cl <900ppm each (<1500ppm total), Sb <1000ppm-verified per Diodes' quality documentation.

AP7340-11FS4-7 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):: 1.1V

Voltage - Output (Max):: -

Voltage Dropout (Max):: 0.62V @ 150mA

Current - Output:: 150mA

Current - Quiescent (Iq):: 50 µA

Current - Supply (Max):: 100 µA

PSRR:: 75dB (1kHz)

Control Features:: Enable

Protection Features:: Over Current

Operating Temperature:: -40°C ~ 85°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: X2-DFN1010-4

AP7340-11FS4-7 FAQ

1.How can I place an order for AP7340-11FS4-7 through Aetrix?

Please submit a Request for Quotation (RFQ) for AP7340-11FS4-7 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 AP7340-11FS4-7 reliable?

The price and inventory of AP7340-11FS4-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7340-11FS4-7 is usually 5 days.

3.What payment methods are accepted for AP7340-11FS4-7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7340-11FS4-7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AP7340-11FS4-7?

AP7340-11FS4-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AP7340-11FS4-7 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 AP7340-11FS4-7?

For technical support, including AP7340-11FS4-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7340-11FS4-7 requirements.

6.How does Aetrix verify that AP7340-11FS4-7 is sourced from the original manufacturer or authorized distributors?

All AP7340-11FS4-7 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 AP7340-11FS4-7 meets industry standards.

7.What is the process for return or replacement of AP7340-11FS4-7?

All AP7340-11FS4-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7340-11FS4-7, 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 AP7340-11FS4-7 part is unused and in its original packaging.

Return procedure for AP7340-11FS4-7:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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