My Inquiry
My Account
Diodes Incorporated AP7353D-28CV4-7
- Part No.:
- AP7353D-28CV4-7
- Manufacturer:
- Diodes Incorporated
- Package:
- 4-XFBGA, WLBGA
- Datasheet:
-
AP7353D-28CV4-7.pdf
- Description:
- LDO CMOS LOWCURR X1-WLB0707-4 T&
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AP7353D-28CV4-7 from Diodes Incorporated is a 250mA low-dropout linear regulator with fixed 2.8V output, ±1% accuracy, 90dB PSRR at 1kHz, 10µVrms output noise (10Hz–100kHz), and 18µA typical quiescent current. It features enable control, thermal shutdown, short-circuit protection, and integrated auto-discharge functionality. Designed for RF supply rails in compact portable devices, it operates across 2.0V–5.5V input and delivers stable voltage under fast load transients.
For engineers reviewing the AP7353D-28CV4-7 datasheet, AP7353D-28CV4-7 pinout, AP7353D-28CV4-7 application, or AP7353D-28CV4-7 equivalent, key selection criteria include dropout voltage at 250mA (73mV typ. @ VOUT=2.8V), EN logic thresholds (0.4V max low, 1.2V min high), thermal resistance (150°C/W for X1-WLB0707-4), and compatibility with 1µF ceramic output capacitors.
Technical Context
The AP7353D-28CV4-7 implements a CMOS-based LDO architecture with an internal voltage reference, error amplifier, current-limit circuit, and NMOS pass transistor with built-in discharge path. Its auto-discharge function actively pulls the output to ground when disabled, preventing residual voltage hold-up in battery-sensitive systems.
It supports two package variants - X1-WLB0707-4 (Type A1) and X2-DFN1010-4 (Type B) - both requiring minimal PCB footprint and optimized thermal layout via exposed pad connection to GND. The device achieves fast load transient response (<20µs recovery) and maintains stability with low-ESR ceramic capacitors down to 0.7µF.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.8V ±1% - ensures precise biasing for 2.8V I/O domains and RF front-end ICs without external feedback. |
| Max Output Current | 250mA - sufficient to power baseband processors, camera modules, or dual-band RF transceivers in wearables. |
| PSRR | 90dB @ 1kHz, 70dB @ 10kHz - suppresses switching noise from DC/DC converters feeding the LDO input. |
| Output Noise | 10µVrms (10Hz–100kHz) - enables clean analog supply for ADCs, PLLs, and low-noise amplifiers. |
| Quiescent Current | 18µA typ. - extends battery life in always-on sensor nodes and Bluetooth LE peripherals. |
| Dropout Voltage | 73mV typ. @ 250mA - allows operation from single-cell Li-ion (3.0V min) or 2xAA alkaline (3.2V min) with margin. |
| Enable Thresholds | VIL ≤ 0.4V, VIH ≥ 1.2V - compatible with 1.8V/3.3V GPIOs without level-shifting. |
| Auto-Discharge RON | 35Ω typ. - discharges 10µF output capacitance to <100mV in <1ms, eliminating need for external discharge FET. |
Pinout & Package
X1-WLB0707-4 (Type A1) is a 0.7mm × 0.7mm wafer-level chip-scale package with 4 solder bumps and an exposed thermal pad. It offers 150°C/W junction-to-ambient thermal resistance and requires PCB copper area under the pad connected to GND for optimal thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN (Bump 1) | Power Input | Accepts 2.0V–5.5V input; must be decoupled with ≥1µF ceramic capacitor placed adjacent to pin. |
| EN (Bump 2) | Enable Control | Active-high logic input; floating state prohibited - tie to IN or use pull-up for default-on operation. |
| GND (Bump 3) | Ground Reference | Primary return path for input/output currents; connects internally to exposed pad for thermal conduction. |
| OUT (Bump 4) | Regulated Output | Delivers 2.8V ±1%; requires ≥1µF low-ESR ceramic capacitor within 2mm of pin for stability. |
| EP (Exposed Pad) | Thermal & Electrical Ground | Must be soldered to large GND copper pour; not a functional signal terminal but critical for thermal dissipation and EMI reduction. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Auto-Discharge | 35Ω NMOS discharge path eliminates external components for rapid output discharge during shutdown. |
| Ultra-Low Noise | 10µVrms output noise enables direct powering of RF synthesizers and precision analog sensors. |
| High PSRR at High Frequency | 70dB rejection at 10kHz supports coexistence with high-frequency switching regulators in PMIC subsystems. |
| Low Dropout at Full Load | 73mV typical dropout at 250mA allows >95% efficiency from 2.87V input - critical for energy-constrained wearables. |
| Wide Input Range | 2.0V–5.5V operation supports single-cell Li-ion, Li-polymer, and multi-cell alkaline/battery configurations. |
| Robust Protection | Thermal shutdown + short-circuit current limiting (≈350mA) prevent damage during fault conditions. |
Applications
| Smartphone Camera Module | Bluetooth LE Audio Earbud |
|---|---|
|
Use Scenario: Powers image signal processor (ISP) and CIS analog front-end requiring ultra-low noise and tight voltage tolerance. IC Role / Device Role / Timing Role: Primary 2.8V analog supply rail with fast transient response to handle burst-mode pixel readout. Use Value: 10µVrms noise prevents fixed-pattern noise in raw image data; ±1% accuracy maintains consistent gain calibration across temperature. |
Use Scenario: Supplies 2.8V to Bluetooth audio codec and Class-D amplifier in space-constrained earbud PCB. IC Role / Device Role / Timing Role: Low-quiescent-current LDO enabling >100hr standby time while supporting rapid wake-up for voice assistant triggers. Use Value: 18µA IQ minimizes battery drain during idle; auto-discharge prevents phantom current draw when host MCU powers down. |
| Wearable Heart Rate Sensor | Wi-Fi 6 IoT Edge Node |
|
Use Scenario: Provides clean 2.8V bias to photodiode transimpedance amplifier and ADC in optical PPG subsystem. IC Role / Device Role / Timing Role: Ultra-low-noise analog supply isolating sensitive analog measurements from digital switching noise. Use Value: 90dB PSRR at 1kHz rejects noise from nearby 32kHz RTC oscillator and BLE radio bursts, improving SNR by >15dB. |
Use Scenario: Supplies 2.8V to Wi-Fi 6 RF transceiver's PA bias and LNA stages in battery-powered gateway node. IC Role / Device Role / Timing Role: High-PSRR post-regulator cleaning up noisy buck converter output for RF chain integrity. Use Value: 70dB PSRR at 10kHz suppresses switching harmonics from 2MHz DC/DC, reducing EVM degradation in 802.11ax OFDMA transmission. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP7361D-28YR-7 | Higher output current (600mA), larger X2-DFN1212-6 package, no auto-discharge, 25µA IQ | Suitable for higher-power RF modules where discharge is handled externally or unnecessary | Select when >250mA load or lower thermal resistance (120°C/W) is required; avoid if board space or auto-discharge is critical |
| MCP1703T-2802E/MB | Same 2.8V/250mA rating, 1.8µA IQ, no enable pin, no auto-discharge, SOT-23-5 package | Fits legacy designs using through-hole or larger SMT footprints; lacks active control and discharge | Choose for ultra-low-power always-on sensors where enable control is omitted and board area permits SOT-23 |
Compared with AP7353D-28CV4-7, AP7361D-28YR-7 trades auto-discharge and compact size for higher current and better thermal performance, while MCP1703T-2802E/MB sacrifices control flexibility and modern packaging for extreme quiescent current reduction in static-sensing applications.
Availability
AP7353D-28CV4-7 is available at Aetrix Electronics and suitable for smartphone camera modules, Bluetooth LE audio earbuds, and wearable heart rate sensors requiring stable component supply, long-term lifecycle support, and RoHS-compliant green packaging.
Supply support for AP7353D-28CV4-7 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 power management, signal integrity, and connectivity solutions for consumer, industrial, and automotive markets.
The AP7353 series belongs to Diodes' high-performance LDO portfolio, engineered specifically for noise-sensitive portable electronics where small size, low IQ, and fast transient response are mandatory design requirements.
FAQ
What is the minimum output capacitance required for stable operation of AP7353D-28CV4-7?
The AP7353D-28CV4-7 is stable with a minimum effective output capacitance of 0.7µF, accounting for temperature, DC bias, and tolerance derating. A 1µF X7R/X5R ceramic capacitor placed within 2mm of the OUT and GND pins is recommended for optimal transient response and phase margin.
Does AP7353D-28CV4-7 require an input capacitor, and what value is recommended?
Yes - a minimum 1µF ceramic capacitor between IN and GND is required to suppress input supply glitches and maintain stability during load steps. This capacitor must be located as close as possible to the IN and GND pins, using wide copper traces to minimize impedance and ensure reliable operation across temperature and frequency.
How does the auto-discharge feature operate, and what is its on-resistance?
When the EN pin is pulled low, the AP7353D-28CV4-7 activates an internal NMOS transistor between OUT and GND, with a typical on-resistance of 35Ω. This discharges a 10µF output capacitor to <100mV in under 1ms, eliminating residual voltage that could interfere with system reset sequencing or cause leakage in powered-down subsystems.
Can AP7353D-28CV4-7 be used in automotive applications?
The AP7353D-28CV4-7 is not AEC-Q100 qualified. For automotive-grade equivalents, Diodes offers the AP7363 series (AEC-Q100 Grade 1), which shares similar electrical specs but includes extended temperature range (−40°C to +125°C), PPAP capability, and IATF 16949 manufacturing compliance - contact Diodes technical support for qualified part numbers.
AP7353D-28CV4-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 4-XFBGA, WLBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 2.8V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.152V @ 250mA
- Current - Output:
- 250mA
- Current - Quiescent (Iq):
- 27 µA
- Current - Supply (Max):
- -
- PSRR:
- 90dB ~ 70dB (100Hz ~ 10kHz)
- Control Features:
- Current Limit, Enable
- Protection Features:
- Over Current, Over Temperature, Short Circuit
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- X1-WLB0707-4 (Type A1)
AP7353D-28CV4-7 FAQ
1.How can I place an order for AP7353D-28CV4-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7353D-28CV4-7 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 AP7353D-28CV4-7 reliable?
The price and inventory of AP7353D-28CV4-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7353D-28CV4-7 is usually 5 days.
3.What payment methods are accepted for AP7353D-28CV4-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7353D-28CV4-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7353D-28CV4-7?
AP7353D-28CV4-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7353D-28CV4-7 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 AP7353D-28CV4-7?
For technical support, including AP7353D-28CV4-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7353D-28CV4-7 requirements.
6.How does Aetrix verify that AP7353D-28CV4-7 is sourced from the original manufacturer or authorized distributors?
All AP7353D-28CV4-7 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 AP7353D-28CV4-7 meets industry standards.
7.What is the process for return or replacement of AP7353D-28CV4-7?
All AP7353D-28CV4-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7353D-28CV4-7, 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 AP7353D-28CV4-7 part is unused and in its original packaging.
Return procedure for AP7353D-28CV4-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AP7353D-28CV4-7 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.…
