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onsemi NCP699SN45T1G
- Part No.:
- NCP699SN45T1G
- Manufacturer:
- onsemi
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
NCP699SN45T1G.pdf
- Description:
- IC REG LINEAR 4.5V 150MA 5TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,167
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Product details
Overview
NCP699SN45T1G from onsemi is a fixed-output 4.5 V CMOS low-dropout (LDO) regulator in TSOP-5 package, delivering up to 150 mA output current with 40 µA typical ground current, 240 mV dropout at full load, ±2.0% output voltage accuracy, and operation across −40 °C to +85 °C - designed for battery-powered portable electronics requiring ultra-low quiescent power.
For engineers reviewing the NCP699SN45T1G datasheet, pinout, applications, or equivalent options, key selection criteria include its 4.5 V fixed output, enable control with sub-1 V logic compatibility, stability with 1 µF ceramic/tantalum capacitors, and thermal shutdown protection - all critical for space-constrained, low-power handheld systems.
Technical Context
The NCP699SN45T1G integrates a PMOS pass transistor, precision voltage reference, error amplifier, and internal current/temperature limit protection. Its enable input supports active-high logic down to 0.3 V (logic low) and 0.95 V (logic high), allowing direct interfacing with low-voltage microcontrollers.
Dropout voltage is specified at 240 mV (typical) under 150 mA load for the 4.5 V variant, with line regulation of ≤3.0 mV/V and load regulation of ≤0.8 mV/mA. Ground current remains constant at 40 µA (typical) across load and temperature, enabling predictable battery life estimation in always-on subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 4.5 V ±2.0% - ensures stable supply for 4.5 V–tolerant logic or analog circuitry without external feedback. |
| Max Output Current | 150 mA - sufficient for powering baseband processors, sensors, or RF front-end bias circuits in portable devices. |
| Dropout Voltage | 240 mV at 150 mA - enables regulation from 4.74 V input, supporting single-cell Li-ion (4.2 V max) with margin when paired with boost or charge management. |
| Ground Current | 40 µA typical - minimizes standby power loss; independent of load, enabling accurate low-power mode current budgeting. |
| Enable Threshold | VEN(H) = 0.95 V, VEN(L) = 0.3 V - compatible with 1.2 V, 1.8 V, and 3.3 V GPIOs without level-shifting. |
| Capacitor Support | Stable with ≥1 µF ceramic or tantalum - eliminates need for high-ESR capacitors, reducing BOM cost and PCB area. |
| Operating Temp | −40 °C to +85 °C - qualified for consumer and industrial portable equipment environments. |
Pinout & Package
Package: TSOP-5 (Case 483), 3.00 mm × 1.50 mm × 0.95 mm, Pb-free, surface-mount.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Vin | Positive input supply - accepts 2.1 V to 6.0 V; must be decoupled with ≥1 µF capacitor near pin. |
| 2 | Gnd | Power ground reference - requires low-impedance connection to PCB ground plane to minimize noise coupling. |
| 3 | Enable | Active-high enable control - pull high to Vin to activate regulator; pull low (≤0.3 V) to disable and reduce ground current to 0.03 µA. |
| 4 | N/C | No internal connection - must remain unconnected; no routing or copper fill required. |
| 5 | Vout | Regulated 4.5 V output - requires ≥1 µF output capacitor; short traces minimize ESR-induced instability and transient overshoot. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low ground current | 40 µA typical across full load and temperature range - extends battery runtime in always-on sensor nodes and standby modes. |
| Low dropout performance | 240 mV at 150 mA for 4.5 V output - maintains regulation with minimal headroom, improving system efficiency in tight-input applications. |
| Sub-1 V enable logic | 0.95 V turn-on threshold - allows direct interface with modern low-voltage MCUs (e.g., ARM Cortex-M0+ GPIOs) without external level shifters. |
| Thermal shutdown protection | Activates at ~160 °C junction temperature - prevents permanent damage during overload or poor PCB thermal design. |
| Pb-free TSOP-5 package | RoHS-compliant, 0.95 mm pitch, 3.0 × 1.5 mm footprint - supports high-density portable PCB layouts and automated assembly. |
Applications
| Cellular Phone Subsystems | Portable Medical Sensors |
|---|---|
|
Use Scenario: Powering RF transceiver bias rails and baseband processor I/O domains in compact smartphone designs. IC Role / Device Role / Timing Role: Primary 4.5 V LDO supplying regulated voltage to sensitive analog front-ends and digital I/O interfaces. Use Value: 40 µA ground current and 240 mV dropout preserve battery capacity and extend talk time while maintaining signal integrity under dynamic load. |
Use Scenario: Providing stable 4.5 V supply to low-power biosignal amplifiers and ADC drivers in wearable ECG/SpO₂ monitors. IC Role / Device Role / Timing Role: Precision voltage source ensuring consistent analog gain and ADC reference stability across temperature and battery discharge. Use Value: ±2.0% output accuracy and <100 µVRMS noise (100 Hz–100 kHz) minimize measurement drift and quantization error in clinical-grade sensing. |
| Handheld Test Instruments | Wireless IoT Edge Nodes |
|
Use Scenario: Regulating supply for microcontroller peripherals and display drivers in battery-operated multimeters and oscilloscope probes. IC Role / Device Role / Timing Role: Enable-controlled power domain manager enabling rapid wake/sleep cycling of non-critical subsystems. Use Value: Active-high enable with 0.3 V logic-low threshold allows clean, low-power state transitions synchronized with MCU sleep states. |
Use Scenario: Supplying 4.5 V to LoRaWAN or BLE radio modules and environmental sensors in remote asset trackers. IC Role / Device Role / Timing Role: Low-quiescent LDO enabling multi-year battery life in intermittent transmission applications. Use Value: Stable operation with 1 µF ceramic capacitors reduces bill-of-materials cost and simplifies layout for small-form-factor PCBs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-4502E/TT | 4.5 V fixed, 250 mA, 1.6 µA quiescent current, SOT-23-3 package (no enable) | Lacks enable control and thermal shutdown; lower IQ but higher dropout (600 mV @ 250 mA) | Choose for ultra-low-IQ applications where enable and protection are not required and board space permits larger dropout margin. |
| TCS2104-4.5V | 4.5 V fixed, 150 mA, 50 µA IQ, TSOP-5 with enable, but only −25 °C to +85 °C rating | Narrower operating temperature range; slightly higher ground current; same pinout but different marking and enable thresholds | Acceptable for commercial-grade portable devices where extended −40 °C operation is not mandated. |
Compared with MCP1700T-4502E/TT and TCS2104-4.5V, the NCP699SN45T1G uniquely combines 40 µA ground current, 240 mV dropout, full −40 °C to +85 °C qualification, and integrated thermal shutdown in a TSOP-5 package with logic-compatible enable - making it optimal for ruggedized, battery-sensitive portable designs demanding reliability and precision.
Availability
NCP699SN45T1G is available at Aetrix Electronics and suitable for cellular phone subsystems, portable medical sensors, and handheld test instruments requiring stable component supply despite its discontinued status - inventory is secured for legacy design support and production continuity.
Supply support for NCP699SN45T1G 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, and sensor solutions for automotive, industrial, and portable electronics.
The NCP699 series was developed specifically for handheld communication and battery-powered portable equipment needing ultra-low quiescent current, small footprint, and robust thermal protection - targeting design-in longevity in consumer and medical edge devices.
FAQ
What is the output voltage tolerance of the NCP699SN45T1G?
The NCP699SN45T1G has a guaranteed output voltage tolerance of ±2.0% over temperature (−40 °C to +85 °C) and load (1 mA to 150 mA). At 25 °C and 10 mA load, the typical output is 4.5 V, with min/max values of 4.365 V and 4.635 V respectively - critical for ensuring compatibility with 4.5 V-tolerant I/O standards.
Does the NCP699SN45T1G require an external resistor network for output voltage setting?
No, the NCP699SN45T1G is a fixed-output LDO with internally trimmed resistors set to 4.5 V. It does not use external feedback resistors, eliminating component count, layout sensitivity, and trimming errors - simplifying design and improving long-term voltage stability.
Can the NCP699SN45T1G operate with a 1 µF ceramic capacitor on the output?
Yes, the NCP699SN45T1G is explicitly characterized and stabilized with 1 µF ceramic or tantalum capacitors on both input and output. Its internal compensation eliminates ESR dependency, allowing low-ESR ceramics without risk of oscillation - reducing cost and PCB area versus traditional LDOs requiring high-ESR electrolytics.
What is the maximum input voltage rating for the NCP699SN45T1G?
The absolute maximum input voltage for the NCP699SN45T1G is 6.0 V, with recommended operating range from 2.1 V to 6.0 V. Exceeding 6.0 V risks permanent damage per the Absolute Maximum Ratings table - design margins should ensure worst-case input (e.g., battery peak charge) stays within this limit.
Is the NCP699SN45T1G still in active production?
No, the NCP699SN45T1G is marked as discontinued by onsemi per the February 2026 datasheet revision. However, Aetrix Electronics maintains secured inventory and offers lifecycle support including traceable sourcing and BOM continuity management for ongoing production needs.
NCP699SN45T1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SOT-23-5 Thin, TSOT-23-5
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 4.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.3V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 90 µA
- Current - Supply (Max):
- -
- PSRR:
- 55dB ~ 50dB (120Hz ~ 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:
- 5-TSOP
NCP699SN45T1G FAQ
1.How can I place an order for NCP699SN45T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP699SN45T1G 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 NCP699SN45T1G reliable?
The price and inventory of NCP699SN45T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP699SN45T1G is usually 5 days.
3.What payment methods are accepted for NCP699SN45T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP699SN45T1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP699SN45T1G?
NCP699SN45T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP699SN45T1G 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 NCP699SN45T1G?
For technical support, including NCP699SN45T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP699SN45T1G requirements.
6.How does Aetrix verify that NCP699SN45T1G is sourced from the original manufacturer or authorized distributors?
All NCP699SN45T1G 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 NCP699SN45T1G meets industry standards.
7.What is the process for return or replacement of NCP699SN45T1G?
All NCP699SN45T1G units undergo pre-shipment inspection (PSI). If there is an issue with NCP699SN45T1G, 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 NCP699SN45T1G part is unused and in its original packaging.
Return procedure for NCP699SN45T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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