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

Diodes Incorporated AP7340D-11FS4-7

Name: AP7340D-11FS4-7
Brand: Diodes Incorporated
SKU: AP7340D-11FS4-7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AP7340D-11FS4-7

Manufacturer:: Diodes Incorporated

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

Package:: 4-XDFN Exposed Pad

Datasheet:: AP7340D-11FS4-7.pdf

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

Quantity:: RFQ Add To RFQ list

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Product details

Overview

AP7340D-11FS4-7 from Diodes Incorporated is a 150mA low-dropout linear regulator with fixed 1.1V output, ±1% accuracy over -40°C to +85°C, 75dB PSRR at 1kHz, 60µV_rms output noise (10Hz–100kHz), and 35µA quiescent current. It features enable control, built-in auto-discharge, and operates from 1.7V to 5.25V input - designed for powering RF supply rails and core logic in space-constrained portable media players.

For engineers reviewing the AP7340D-11FS4-7 datasheet, AP7340D-11FS4-7 pinout, AP7340D-11FS4-7 application, or AP7340D-11FS4-7 equivalent, key selection criteria include dropout voltage (0.50V typ. @150mA for 1.1V V_OUT), thermal performance in X2-DFN1010-4, EN logic thresholds (0.5V max low, 1.3V min high), and discharge resistance (30Ω typ.) - all critical for battery-powered load transient integrity and fast power-down sequencing.

Technical Context

The AP7340D-11FS4-7 integrates a CMOS-based error amplifier, precision voltage reference, current-limit circuit, and active N-channel discharge FET. Its architecture enables stable regulation with 0.47µF ceramic input/output capacitors and supports rapid enable/disable transitions with controlled output discharge.

Unlike non-discharge variants (e.g., AP7340-11FS4-7), the 'D' suffix denotes integrated 30Ω auto-discharge path from V_OUT to GND during shutdown, reducing residual output voltage decay time by >90% versus passive RC discharge - essential for multi-rail sequencing in portable video systems.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	Fixed 1.1V ±1% (±1.5% over full temperature range) - ensures stable core bias for low-voltage DSPs and image signal processors.
Max Output Current	150mA continuous - sufficient for baseband processors and camera sensor I/O interfaces without thermal derating in X2-DFN1010-4.
PSRR	75dB at 1kHz - suppresses switching noise from PMIC DC-DC converters feeding shared input rails.
Output Noise	60µV_rms (10Hz–100kHz) - preserves SNR in analog front-ends of RF transceivers and audio codecs.
Quiescent Current	35µA typical - extends battery life in always-on standby modes of wireless adapters.
Dropout Voltage	0.50V typical @150mA - enables operation down to 1.6V input, compatible with single-cell Li-ion (2.8–4.2V) and Li-polymer batteries.
Enable Thresholds	V_IL ≤ 0.5V, V_IH ≥ 1.3V - compatible with 1.8V/3.3V GPIOs without level-shifting.
Discharge Resistance	30Ω typical - discharges 10µF load in <300µs, preventing latch-up during power cycling in smart phone/PAD applications.

Pinout & Package

The AP7340D-11FS4-7 is housed in a 1.0mm × 1.0mm, 0.4mm height X2-DFN1010-4 package with exposed thermal pad. This ultra-compact footprint minimizes PCB area while enabling efficient heat dissipation via direct thermal pad connection to ground plane.

Pin/Terminal	Circuit Role	Design Meaning
VOUT (Pin 1)	Regulated Power Output	Delivers stable 1.1V to load; requires 0.47µF ceramic capacitor placed within 2mm for stability and transient response.
GND (Pin 2)	Power Ground Reference	Primary return path for output current and internal circuits; must connect directly to low-impedance ground plane under thermal pad.
EN (Pin 3)	Active-High Enable Control	Pulling ≥1.3V enables regulation; ≤0.5V disables output and activates 30Ω discharge path; floating state prohibited.
VIN (Pin 4)	Input Power Supply	Accepts 1.7–5.25V; requires 0.47µF decoupling capacitor adjacent to pin to suppress supply glitches during load steps.
Thermal Pad	Thermal Dissipation Path	Not electrically connected; must be soldered to ≥25mm² copper area tied to GND for 400mW power dissipation capability.

Key Features

Feature	Design Value
Ultra-low quiescent current	35µA typical enables >1-year battery life in always-on IoT sensors powered by coin cells.
High PSRR at 1kHz	75dB rejection of PMIC ripple allows clean 1.1V supply for RF synthesizers without additional LC filtering.
Integrated auto-discharge	30Ω on-chip discharge FET eliminates need for external pull-down resistor, saving BOM cost and board space.
Tight output accuracy	±1% at +25°C and ±1.5% over -40°C to +85°C ensures reliable operation of 1.1V FPGA I/O banks and memory interfaces.
Small-footprint DFN package	X2-DFN1010-4 (1.0×1.0mm) supports >20% higher component density than SOT-23-5 in portable video PCB layouts.

Applications

Smartphone Baseband Power

RF Transceiver Bias

Use Scenario: Powers ARM Cortex-A series application processor cores and DDR I/O in dual-SIM smartphones with aggressive power gating.

IC Role / Device Role / Timing Role: Primary 1.1V LDO delivering regulated core voltage with fast transient response to CPU burst loads.

Use Value: 75dB PSRR prevents digital switching noise from corrupting analog PLL lock stability during call handover.

Use Scenario: Supplies bias voltage to GaAs power amplifiers and low-noise amplifiers in 4G LTE front-end modules.

IC Role / Device Role / Timing Role: Low-noise 1.1V source for RF IC V_CC pins, synchronized to PA enable timing via EN pin.

Use Value: 60µV_rms output noise maintains EVM <1.5% in 20MHz LTE uplink transmission.

Portable Video Decoder

Camera Sensor Interface

Use Scenario: Provides clean 1.1V supply to H.264 video decoder ASICs in handheld projectors and VR headsets.

IC Role / Device Role / Timing Role: Secondary LDO in multi-rail power tree, enabled only during video playback to minimize standby current.

Use Value: 35µA quiescent current reduces system standby drain by 12µA versus legacy 100µA LDOs.

Use Scenario: Powers MIPI CSI-2 interface logic and image signal processor (ISP) I/O in smartphone rear cameras.

IC Role / Device Role / Timing Role: Fast-enable LDO sequenced after main 1.8V sensor rail to prevent I/O contention during boot.

Use Value: 30Ω auto-discharge clears residual 1.1V in <300µs, eliminating frame corruption during rapid camera mode switching.

Equivalent & Alternatives

The following parts are listed as comparable options for similar low-noise, enable-controlled LDO applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
AP7340-11FS4-7	No auto-discharge FET; EN pin disables output but leaves VOUT floating.	Suitable where fast discharge is unnecessary, e.g., single-rail systems without sequencing constraints.	Select when board-level discharge RC network already exists or thermal pad routing is constrained.
MCP1700T-1102E/TT	Higher 6µA quiescent current, no enable pin, 2% output accuracy, SOT-23-3 package.	Better for ultra-low-power always-on sensors; lacks EN control and discharge for dynamic power management.	Choose only for cost-sensitive, non-sequenced applications where 1.1V tolerance >±2% is acceptable.

Compared with AP7340-11FS4-7, the AP7340D-11FS4-7 adds critical discharge functionality for multi-rail sequencing, while MCP1700T-1102E/TT trades enable control and accuracy for lower IQ - making the 'D' variant optimal for portable video and RF systems requiring deterministic power-down behavior.

Availability

AP7340D-11FS4-7 is available at Aetrix Electronics and suitable for smartphone baseband power, RF transceiver bias, portable video decoding, and camera sensor interface applications requiring stable component supply, consistent parametric performance, and long-term lifecycle support.

Supply support for AP7340D-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 manufacturer of discrete semiconductors and analog ICs, specializing in high-efficiency power management, signal integrity, and protection solutions for consumer, industrial, and communications markets.

The AP7340 series belongs to Diodes' high-PSRR, low-noise LDO product line, engineered specifically for noise-sensitive RF and portable multimedia applications where compact size, fast transient response, and precise voltage regulation are mandatory.

FAQ

What is the maximum allowable input voltage for AP7340D-11FS4-7?

The absolute maximum input voltage is 6.0V, but the recommended operating range is 1.7V to 5.25V. Exceeding 5.25V may cause excessive power dissipation or reliability degradation, especially at elevated ambient temperatures. Operation above 5.25V voids warranty and risks permanent damage per Absolute Maximum Ratings.

Does AP7340D-11FS4-7 require an external discharge resistor?

No. The 'D' suffix indicates integrated auto-discharge functionality via a 30Ω on-chip N-channel FET between VOUT and GND. When EN is low, this path actively discharges the output capacitor, eliminating the need for external components and reducing PCB footprint and BOM count.

Can AP7340D-11FS4-7 operate with ceramic capacitors smaller than 0.47µF?

No. The datasheet specifies 0.47µF minimum for both CIN and COUT to ensure stability and meet transient response specifications. Using smaller values risks oscillation, poor load step recovery, and violation of PSRR/noise performance - verified across -40°C to +85°C with 10Hz–100kHz bandwidth.

How does thermal performance differ between AP7340D-11FS4-7 and AP7340-11FS4-7?

Both share identical X2-DFN1010-4 packaging and thermal resistance (θ_JA ≈ 250°C/W on JEDEC standard board), so thermal performance is functionally identical. The 'D' variant's discharge FET contributes negligible additional power dissipation during shutdown, and no derating is required for either part under specified operating conditions.

AP7340D-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

AP7340D-11FS4-7 FAQ

1.How can I place an order for AP7340D-11FS4-7 through Aetrix?

Please submit a Request for Quotation (RFQ) for AP7340D-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 AP7340D-11FS4-7 reliable?

The price and inventory of AP7340D-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 AP7340D-11FS4-7 is usually 5 days.

3.What payment methods are accepted for AP7340D-11FS4-7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7340D-11FS4-7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AP7340D-11FS4-7?

AP7340D-11FS4-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AP7340D-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 AP7340D-11FS4-7?

For technical support, including AP7340D-11FS4-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7340D-11FS4-7 requirements.

6.How does Aetrix verify that AP7340D-11FS4-7 is sourced from the original manufacturer or authorized distributors?

All AP7340D-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 AP7340D-11FS4-7 meets industry standards.

7.What is the process for return or replacement of AP7340D-11FS4-7?

All AP7340D-11FS4-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7340D-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 AP7340D-11FS4-7 part is unused and in its original packaging.

Return procedure for AP7340D-11FS4-7:

1.Submit a request within 90 days.

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

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