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onsemi NCP693DMN33TCG
- Part No.:
- NCP693DMN33TCG
- Manufacturer:
- onsemi
- Package:
- 6-UFDFN Exposed Pad
- Datasheet:
-
NCP693DMN33TCG.pdf
- Description:
- IC REG LINEAR 3.3V 1A 6UDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,790
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Product details
Overview
NCP693DMN33TCG from onsemi is a fixed-output 3.3 V, 1 A CMOS low-dropout linear regulator in a DFN-6 (1.8×2 mm) package, featuring ±1.0% output accuracy, ultra-low 0.15–0.6 µA standby current via CE pin control, and built-in thermal shutdown and current limiting-designed for battery-powered portable instruments requiring stable 3.3 V rail under dynamic load.
For engineers reviewing the NCP693DMN33TCG datasheet, pinout, applications, or equivalent options, key selection criteria include dropout voltage at 1 A (0.43–0.65 V), PSRR of 70 dB at 1 kHz, auto-discharge capability unique to the D version, and thermal performance with RJA = 114 °C/W on standard PCB layout.
Technical Context
The NCP693DMN33TCG integrates a PMOS pass transistor, precision voltage reference, error amplifier, and enable-controlled auto-discharge circuitry-enabling fast turn-off and rapid output discharge during standby. Its architecture supports input voltages from 1.6 V to 6.5 V while maintaining regulation down to 3.3 V output.
Unlike the H-version, the D-version (denoted by "DMN") adds an internal discharge transistor activated when CE is low, reducing output voltage decay time significantly. This feature is critical in systems requiring clean power sequencing and zero-voltage hold during sleep mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.3 V ±1.0% (0.76–0.827 V deviation over −40°C to +85°C) |
| Max Output Current | 1 A continuous-supports high-current digital loads like microcontrollers and RF modules |
| Dropout Voltage | 0.43 V (typ) at 1 A, 3.3 V output-enables operation from 3.73 V Li-ion single-cell |
| PSRR | 70 dB at 1 kHz-suppresses switching noise from upstream DC/DC converters |
| Standby Current | 0.15–0.6 µA with CE = 0 V-extends battery life in deep-sleep modes |
| Thermal Shutdown | 165°C with 30°C hysteresis-prevents latch-up during sustained overload |
| Enable Threshold | VTH(ON) = 1.0 V, VTH(OFF) = 0.4 V-compatible with 1.8 V and 3.3 V logic interfaces |
Pinout & Package
The NCP693DMN33TCG is housed in a Pb-free UDFN-6 (1.8×2 mm, 0.5 mm pitch) package with exposed thermal pad (EP = GND). The compact footprint supports high-density portable PCB layouts and enables efficient heat dissipation through the EP connection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 | Vout | Dual parallel output pins reduce trace resistance and improve current sharing for 1 A load |
| 3, EP | GND | Power ground and thermal path-EP must be soldered to large copper pour for RJA ≤ 114 °C/W |
| 4 | CE | Active-high enable; pulls output to 0 V via internal discharge transistor when low (D-version only) |
| 5, 6 | Vin | Dual parallel input pins minimize IR drop and enhance transient response under pulsed load |
Key Features
| Feature | Design Value |
|---|---|
| Auto-discharge function | Integrated NMOS discharge path activates on CE low-eliminates need for external bleed resistor |
| Ultra-low quiescent current | 65–90 µA operating / 0.15–0.6 µA standby-preserves battery charge in always-on sensors |
| High-accuracy output | ±1.0% initial tolerance and ±0.27% tempco (100 ppm/°C)-reduces need for post-production calibration |
| Robust protection suite | Current limit (250 mA short-circuit), thermal shutdown (165°C), and reverse-voltage safe inputs |
| Low-noise regulation | 45 µVRMS output noise (10 Hz–100 kHz)-suitable for analog sensor and ADC reference rails |
Applications
| Hand-Held Test Instruments | Portable Communication Devices |
|---|---|
Use Scenario: Battery-powered multimeters and oscilloscopes requiring stable 3.3 V for MCU, display, and signal conditioning circuits during intermittent high-current bursts. IC Role / Device Role / Timing Role: Primary 3.3 V LDO supplying core logic and analog front-end-maintains regulation during 1 A peak loads with <0.1% output sag. Use Value: Dual-Vin/Vout pins and low dropout enable reliable operation from aging 3.7 V Li-ion cells without brownout. | Use Scenario: Bluetooth headsets and Wi-Fi modules where fast power sequencing and zero-voltage hold are required between active and sleep states. IC Role / Device Role / Timing Role: System power supervisor with CE-controlled auto-discharge-ensures clean reset and eliminates floating Vout during standby. Use Value: D-version's integrated discharge cuts external component count by one resistor and improves wake-up timing consistency. |
| Digital Camcorders | Industrial Handheld Scanners |
Use Scenario: Image sensor and video processor subsystems demanding low-noise 3.3 V supply with minimal ripple-induced image artifacts. IC Role / Device Role / Timing Role: Low-noise post-regulator after buck converter-rejects 1 kHz switching noise with 70 dB PSRR. Use Value: 45 µVRMS output noise prevents visible banding in high-resolution video capture. | Use Scenario: Ruggedized barcode scanners powered by replaceable AA/AAA batteries, requiring long shelf life and cold-temperature operation. IC Role / Device Role / Timing Role: Main system regulator supporting wide input range (1.6–6.5 V) and full-spec operation from −40°C to +85°C. Use Value: ±0.27% output drift over temperature ensures consistent decoder performance across environmental extremes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1703T-3302E/MB | Higher dropout (0.6 V @ 250 mA), no auto-discharge, 2 µA standby current | Lacks fast discharge; suitable only where output float is acceptable during disable | Select if cost sensitivity outweighs discharge requirement and load current ≤250 mA |
| TLS850F3TLE | Automotive-grade AEC-Q100, 500 mA max, integrated watchdog and reset-no CE-driven discharge | Designed for automotive body electronics; lacks portable-battery optimization (e.g., ultra-low IQ) | Choose only for automotive qualification needs; not drop-in due to lower current and different enable behavior |
Compared with MCP1703T-3302E/MB and TLS850F3TLE, the NCP693DMN33TCG uniquely combines 1 A output, sub-µA standby, and D-version auto-discharge in a 1.8×2 mm DFN-making it optimal for space-constrained, battery-sensitive portable designs requiring clean power sequencing.
Availability
NCP693DMN33TCG is available at Aetrix Electronics and suitable for hand-held test instruments, portable communication devices, digital camcorders, and industrial handheld scanners requiring stable component supply, long-term lifecycle support, and Pb-free compliance.
Supply support for NCP693DMN33TCG 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 delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The NCP693 series belongs to onsemi's precision analog LDO portfolio, engineered specifically for portable battery-powered systems needing high accuracy, ultra-low quiescent current, and robust protection in miniature DFN packages.
FAQ
What is the maximum input voltage rating for the NCP693DMN33TCG?
The NCP693DMN33TCG has an absolute maximum input voltage of 7 V, but its recommended operating range is 1.6 V to 6.5 V. Exceeding 6.5 V risks exceeding internal PMOS gate oxide limits and may degrade long-term reliability-even if within absolute max ratings. Always maintain Vin ≤ 6.5 V in normal operation.
Does the NCP693DMN33TCG require external capacitors, and what values are recommended?
Yes, the NCP693DMN33TCG requires both input (Cin) and output (Cout) decoupling capacitors. The datasheet specifies minimum 2.2 µF ceramic or tantalum for each, placed as close as possible to the respective pins. Larger values improve transient response and noise rejection-but avoid high-ESR tantalum caps that may cause instability.
How does the auto-discharge function work in the NCP693DMN33TCG?
The NCP693DMN33TCG's auto-discharge function activates when the CE pin is driven low: an internal NMOS transistor connects Vout to GND, rapidly discharging the output capacitor. This feature is exclusive to the D-version (e.g., NCP693DMN33TCG) and eliminates the need for external discharge resistors in power sequencing-critical applications.
What is the thermal resistance (RJA) of the NCP693DMN33TCG under standard PCB conditions?
The NCP693DMN33TCG has a junction-to-ambient thermal resistance (RJA) of 114 °C/W when mounted on an 80×80×1.5 mm FR4 PCB with 1 oz copper and 100 mm² copper spreading area. Achieving this value requires proper soldering of the exposed thermal pad (EP) to a solid GND plane-failure to do so increases RJA significantly.
Can the NCP693DMN33TCG be used with a 3.7 V lithium-ion battery without dropout issues?
Yes-the NCP693DMN33TCG maintains regulation with as little as 3.73 V input at 1 A load (typical dropout = 0.43 V). Since a fully charged Li-ion cell delivers ~4.2 V and nominal voltage is 3.7 V, the NCP693DMN33TCG operates well across the full discharge curve down to ~3.4 V before dropout occurs, making it ideal for single-cell portable systems.
NCP693DMN33TCG 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):
- 3.3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.65V @ 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)
NCP693DMN33TCG FAQ
1.How can I place an order for NCP693DMN33TCG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP693DMN33TCG 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 NCP693DMN33TCG reliable?
The price and inventory of NCP693DMN33TCG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP693DMN33TCG is usually 5 days.
3.What payment methods are accepted for NCP693DMN33TCG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP693DMN33TCG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP693DMN33TCG?
NCP693DMN33TCG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP693DMN33TCG 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 NCP693DMN33TCG?
For technical support, including NCP693DMN33TCG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP693DMN33TCG requirements.
6.How does Aetrix verify that NCP693DMN33TCG is sourced from the original manufacturer or authorized distributors?
All NCP693DMN33TCG 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 NCP693DMN33TCG meets industry standards.
7.What is the process for return or replacement of NCP693DMN33TCG?
All NCP693DMN33TCG units undergo pre-shipment inspection (PSI). If there is an issue with NCP693DMN33TCG, 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 NCP693DMN33TCG part is unused and in its original packaging.
Return procedure for NCP693DMN33TCG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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