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onsemi NCP693DMN25TCG
- Part No.:
- NCP693DMN25TCG
- Manufacturer:
- onsemi
- Package:
- 6-UFDFN Exposed Pad
- Datasheet:
-
NCP693DMN25TCG.pdf
- Description:
- IC REG LINEAR 2.5V 1A 6UDFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,465
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Product details
Overview
NCP693DMN25TCG from onsemi is a fixed-output, 2.5 V, 1 A CMOS low-dropout linear regulator in a DFN-6 (1.8×2 mm) package, featuring ±1.0% output voltage accuracy, ultra-low 0.15–0.6 µA standby current with CE control, and built-in auto-discharge for rapid turn-off. It serves as the primary power rail for core logic in portable battery-powered systems requiring stable low-noise 2.5 V supply under dynamic load.
For engineers reviewing the NCP693DMN25TCG datasheet, pinout, applications, or equivalent options, key selection criteria include dropout voltage at 1 A (0.500 V typ), thermal shutdown (165°C), PSRR (70 dB @ 1 kHz), output noise (45 µVrms), and compatibility with ceramic output capacitors ≥2.2 µF.
Technical Context
The NCP693DMN25TCG integrates a PMOS pass transistor, precision voltage reference, error amplifier, and enable-controlled auto-discharge circuit optimized for fast turn-off response-distinctive to the "D" version versus standard "H" variants. Its architecture supports operation from 1.6 V to 6.5 V input while maintaining regulation down to 2.5 V output.
It delivers 1 A continuous output current with thermal shutdown and current limiting (250 mA short-circuit limit), operates across −40°C to +85°C ambient, and achieves 70 dB power supply rejection at 1 kHz with 45 µVrms integrated output noise over 10 Hz–100 kHz bandwidth.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.5 V ±1.0% (0.760–0.827 V range over temp for 0.8 V variant; 2.435–2.545 V for NCP693DMN25TCG) |
| Max Output Current | 1 A continuous - sufficient to power ARM Cortex-M cores, FPGA I/O banks, or RF transceivers |
| Dropout Voltage | 0.500 V typ @ 1 A (Vin ≥ 3.0 V required for full 2.5 V regulation at max load) |
| PSRR | 70 dB @ 1 kHz - suppresses switching noise from upstream DC/DC converters |
| Output Noise | 45 µVrms (10 Hz–100 kHz) - suitable for noise-sensitive analog/RF circuitry |
| Standby Current | 0.15–0.6 µA @ Vin = 6.5 V - enables multi-week battery life in always-on sensor nodes |
| Thermal Shutdown | 165°C with 30°C hysteresis - protects against sustained overload or poor PCB thermal design |
Pinout & Package
Package: UDFN-6 (1.8 mm × 2.0 mm, 0.50 mm pitch), exposed thermal pad (EP = GND), RoHS-compliant Pb-free construction (Case 517BA).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 | Vout | Dual parallel output pins reduce IR drop and improve current sharing; must be connected together externally |
| 3, EP | GND | Power ground return and primary thermal path via exposed pad; requires solid copper pour for thermal relief |
| 4 | CE | Active-high enable: logic high ≥1.0 V turns regulator on; logic low ≤0.4 V disables output and activates auto-discharge |
| 5, 6 | Vin | Dual parallel input pins lower series resistance and enhance decoupling effectiveness; connect close to 2.2 µF input capacitor |
Key Features
| Feature | Design Value |
|---|---|
| Auto-discharge circuit | Actively discharges output capacitance when CE is pulled low - prevents residual voltage hold-up in power sequencing |
| Ultra-low standby current | 0.15 µA min enables >1-year shelf life in battery-backed IoT endpoints without manual reset |
| ±1.0% output accuracy | Meets tight tolerance requirements for ADC references, PLL VCO supplies, and memory I/O rails |
| Ceramic capacitor compatible | Stable with ≥2.2 µF X5R/X7R MLCCs - eliminates need for larger, higher-ESR tantalum capacitors |
| Thermal & current protection | Integrated thermal shutdown (165°C) and 250 mA current limit prevent damage during fault conditions |
Applications
| Portable Medical Sensors | Industrial Handheld Scanners |
|---|---|
|
Use Scenario: Continuous glucose monitor (CGM) with Bluetooth LE radio and low-power MCU. IC Role / Device Role / Timing Role: Primary 2.5 V supply for analog front-end (AFE), ADC, and BLE SoC core domain. Use Value: Low 45 µVrms noise ensures <1 LSB error in 12-bit medical-grade ADC; auto-discharge guarantees clean power-down between readings. |
Use Scenario: Rugged barcode scanner used in warehouse logistics with frequent wake/sleep cycles. IC Role / Device Role / Timing Role: Main 2.5 V rail for image sensor interface and flash memory controller. Use Value: 0.15 µA standby current extends battery life to >12 hours per charge; fast CE turn-off (<1 µs) synchronizes with processor sleep states. |
| Camcorder Image Signal Processor | Wearable Audio DSP Module |
|
Use Scenario: HD camcorder with rolling-shutter CMOS sensor and real-time video encoder. IC Role / Device Role / Timing Role: Clean 2.5 V bias for sensor analog chain and ISP core logic. Use Value: 70 dB PSRR rejects noise from 2 MHz DC/DC converter; dual-Vout pins minimize voltage droop during burst readout. |
Use Scenario: Bluetooth earbud with active noise cancellation (ANC) and voice assistant processing. IC Role / Device Role / Timing Role: Dedicated 2.5 V supply for low-latency audio DSP and MEMS microphone bias. Use Value: ±1.0% accuracy maintains consistent gain calibration across temperature; thermal shutdown prevents overheating in sealed enclosure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1703T-2502E/MB | 2.5 V, 250 mA max, 6 µA quiescent current, no auto-discharge, SOT-23-5 | Limited to low-current peripherals; lacks fast turn-off and 1 A capability | Select only for space-constrained, sub-250 mA loads where auto-discharge is unnecessary |
| TLS850B2TEV50 | 2.5 V, 500 mA, 35 µA IQ, automotive AEC-Q100 qualified, HTSSOP-8 | Higher IQ, lower current rating, automotive-qualified but larger footprint and no auto-discharge | Prefer for automotive infotainment modules needing qualification; not suitable for portable battery life optimization |
Compared with NCP693DMN25TCG, MCP1703T-2502E/MB trades 1 A capacity and auto-discharge for smaller size and lower cost in low-power roles, while TLS850B2TEV50 offers automotive reliability at the expense of standby current efficiency and turn-off speed-neither matches the combination of 1 A, sub-µA standby, and active discharge in a 1.8×2 mm DFN.
Availability
NCP693DMN25TCG is available at Aetrix Electronics and suitable for portable medical sensors, industrial handheld scanners, camcorders, wearable audio DSP modules, and battery-powered instrumentation requiring stable component supply with guaranteed long-term continuity.
Supply support for NCP693DMN25TCG 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
onsemi (formerly ON Semiconductor) is a global semiconductor supplier specializing in energy-efficient power management, analog, sensing, and connectivity solutions for automotive, industrial, cloud, and consumer markets.
The NCP693 series belongs to onsemi's precision low-dropout regulator product line, engineered specifically for high-current, ultra-low-quiescent-power battery-operated devices where fast enable/disable control and output stability under transient load are critical.
FAQ
What is the minimum input voltage required for NCP693DMN25TCG to regulate 2.5 V at 1 A?
The NCP693DMN25TCG requires a minimum input voltage of 3.0 V to maintain 2.5 V output at 1 A load, based on its typical dropout voltage of 0.500 V at that condition. At lighter loads (e.g., 10 mA), dropout drops to 0.150 V, allowing regulation from as low as 2.65 V. Always verify margin using worst-case max dropout (0.650 V) in design.
Does NCP693DMN25TCG require an external pull-up resistor on the CE pin?
No, the NCP693DMN25TCG does not require an external pull-up on CE. When unused, the CE pin must be tied directly to Vin to ensure the regulator remains enabled. The internal structure does not include a weak pull-up; leaving CE floating risks undefined behavior or unintended disablement due to noise coupling.
How does the auto-discharge function work in NCP693DMN25TCG?
In NCP693DMN25TCG, the auto-discharge function activates when the CE pin is driven low: an internal NMOS transistor connects Vout to GND, rapidly discharging external output capacitance. This feature is exclusive to "D" versions and ensures output falls to near-zero volts within microseconds-critical for safe power sequencing in multi-rail systems.
Can NCP693DMN25TCG operate with a 1 µF ceramic output capacitor?
No-NCP693DMN25TCG requires a minimum 2.2 µF ceramic output capacitor (X5R/X7R) for stability, as specified in the datasheet. Using 1 µF may cause oscillation or poor transient response, especially under load steps. Larger values (e.g., 4.7–10 µF) further improve PSRR and load regulation but do not compromise stability.
Is NCP693DMN25TCG pin-compatible with other NCP693 variants like NCP693HMN25TCG?
Yes-NCP693DMN25TCG and NCP693HMN25TCG share identical pinout, package (UDFN-6), and electrical connections. The only functional difference is the inclusion of auto-discharge circuitry in the "D" version; otherwise, both are drop-in replacements for 2.5 V applications where fast turn-off is not required.
NCP693DMN25TCG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 6-UFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 6.5V
- Voltage - Output (Min/Fixed):
- 2.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 1.1V @ 1A
- Current - Output:
- 1A
- Current - Quiescent (Iq):
- 90 µA
- Current - Supply (Max):
- -
- PSRR:
- 70dB (1kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-UDFN (1.8x2)
NCP693DMN25TCG FAQ
1.How can I place an order for NCP693DMN25TCG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP693DMN25TCG 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 NCP693DMN25TCG reliable?
The price and inventory of NCP693DMN25TCG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP693DMN25TCG is usually 5 days.
3.What payment methods are accepted for NCP693DMN25TCG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP693DMN25TCG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP693DMN25TCG?
NCP693DMN25TCG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP693DMN25TCG 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 NCP693DMN25TCG?
For technical support, including NCP693DMN25TCG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP693DMN25TCG requirements.
6.How does Aetrix verify that NCP693DMN25TCG is sourced from the original manufacturer or authorized distributors?
All NCP693DMN25TCG 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 NCP693DMN25TCG meets industry standards.
7.What is the process for return or replacement of NCP693DMN25TCG?
All NCP693DMN25TCG units undergo pre-shipment inspection (PSI). If there is an issue with NCP693DMN25TCG, 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 NCP693DMN25TCG part is unused and in its original packaging.
Return procedure for NCP693DMN25TCG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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