My Inquiry
My Account
onsemi NCP170AXV190T2G
- Part No.:
- NCP170AXV190T2G
- Manufacturer:
- onsemi
- Package:
- SOT-563, SOT-666
- Datasheet:
-
NCP170AXV190T2G.pdf
- Description:
- IC REG LIN 1.9V 150MA SOT563-6
- Quantity:
- Payment:
- Shipping:
Inventory:3,323
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
NCP170AXV190T2G from onsemi is a CMOS ultra-low IQ LDO regulator delivering 150 mA output with 1.9 V fixed output voltage, 335 mV typical dropout at full load, ±1% output accuracy, and 500 nA typical quiescent current - engineered for battery-powered image sensors and portable wireless devices requiring extended runtime and stable low-noise supply.
For engineers reviewing the NCP170AXV190T2G datasheet, pinout, applications, or equivalent options, key selection criteria include ultra-low standby current (0.1 µA), thermal shutdown (175°C), active discharge option (A-suffix), ceramic-capacitor compatibility (1 µF), and SOT-563 package footprint for space-constrained PCB layouts.
Technical Context
The NCP170AXV190T2G integrates a PMOS pass transistor enabling low dropout operation and features an enable-controlled active discharge path via internal 100 Ω resistor when EN = LOW. Its feedback loop is internally compensated for stability with 1 µF ceramic output capacitors across the full 2.2–5.5 V input range.
It implements over-current protection (225 mA short-circuit limit) and thermal shutdown with 25°C hysteresis, operating reliably from −40°C to +85°C junction temperature. The EN pin has TTL-compatible thresholds (VENH = 1.2 V, VENL ≤ 0.4 V) and sub-10 nA leakage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.9 V ±1% over −40°C to +85°C - ensures precise biasing for 1.8 V I/O domains and image sensor analog cores. |
| Max Output Current | 150 mA - supports moderate-power peripherals like CMOS image sensors or BLE SoCs without external boost. |
| Dropout Voltage | 335 mV typ. at 150 mA - enables regulation from 2.235 V input, critical for single-cell Li-ion or Li-poly systems under discharge. |
| Quiescent Current | 0.5 µA typ. - extends battery life in always-on camera modules and IoT edge nodes with multi-year standby requirements. |
| PSRR @ 1 kHz | 57 dB at 150 mA - suppresses switching noise from adjacent DC-DC converters feeding mixed-signal sensor subsystems. |
| Output Noise | 100 µVRMS (100 Hz–1 MHz) - minimizes jitter and quantization error in ADCs and high-resolution image pipelines. |
| Thermal Shutdown | 175°C with 25°C hysteresis - prevents latch-up during sustained overload while allowing safe recovery after cooling. |
Pinout & Package
SOT-563 package (Case 463A), 1.6 × 1.6 × 0.55 mm, 6-pin surface-mount with exposed pad (internally connected to GND). Pin 1 = IN, Pin 2 = GND, Pin 3 = EN, Pin 4 = OUT, Pin 5 = GND, Pin 6 = NC.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (IN) | Input power supply connection | Accepts 2.2–5.5 V; requires local 1 µF ceramic decoupling to minimize PSRR degradation and transient ringing. |
| Pin 2 (GND) | Power ground reference | Primary ground return; must be low-impedance and tied directly to PCB ground plane beneath EPAD. |
| Pin 3 (EN) | Enable control input (active HIGH) | Drives internal pass transistor; logic HIGH ≥1.2 V enables regulation; <0.4 V disables and activates discharge path. |
| Pin 4 (OUT) | Regulated output voltage | Delivers 1.9 V ±1%; requires 1 µF ceramic output capacitor for stability and transient response. |
| Pin 5 (GND) | Secondary ground terminal | Reduces ground loop impedance; must be routed separately to same ground plane as Pin 2 and EPAD. |
| Pin 6 (NC) | No-connect terminal | Not bonded internally; must remain unconnected and unpopulated on PCB to avoid parasitic coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low IQ | 0.5 µA typical quiescent current enables >10-year battery life in coin-cell–powered camera wake-on-motion applications. |
| Active Output Discharge | 100 Ω internal discharge path pulls OUT to GND within milliseconds of EN deactivation - prevents floating bias in multi-rail sequencing. |
| Ceramic-Cap Stable | Stable with 1 µF X5R/X7R ceramic output capacitor - eliminates need for larger, costlier tantalum or aluminum electrolytics. |
| Thermal Protection | 175°C shutdown with 25°C hysteresis ensures robustness during hot-plug events or ambient temperature excursions in enclosed enclosures. |
| TTL-Compatible Enable | EN threshold (1.2 V HIGH / ≤0.4 V LOW) interfaces directly with 1.8 V or 3.3 V GPIO without level-shifting circuitry. |
Applications
| Image Sensor Power Supply | Wireless Edge Node Core Rail |
|---|---|
Use Scenario: Powering 1.9 V analog/IO domain of CMOS image sensors in compact security cameras. IC Role / Device Role / Timing Role: Primary low-noise, low-IQ LDO supplying clean bias to pixel array and ADC front-end. Use Value: 100 µVRMS output noise and 57 dB PSRR prevent fixed-pattern noise and SNR degradation in low-light imaging. |
Use Scenario: Regulating core voltage for Bluetooth Low Energy SoCs in battery-operated asset trackers. IC Role / Device Role / Timing Role: Always-on LDO maintaining 1.9 V rail during deep-sleep mode and fast wake-up transitions. Use Value: 0.5 µA quiescent current extends CR2032 battery life beyond 5 years in periodic-reporting use cases. |
| Portable Medical Pulse Oximeter | Wearable Biometric Front-End |
Use Scenario: Providing stable 1.9 V supply to optical sensor ICs and analog signal chain in handheld oximeters. IC Role / Device Role / Timing Role: Precision LDO ensuring consistent LED drive current and ADC reference stability across battery discharge. Use Value: ±1% output accuracy and 335 mV dropout maintain regulation down to 2.235 V - matching end-of-life Li-ion voltage. |
Use Scenario: Powering ECG/PPG analog front-ends in wrist-worn health monitors with aggressive size constraints. IC Role / Device Role / Timing Role: Space-optimized LDO in SOT-563 delivering regulated 1.9 V with active discharge for safe rail sequencing. Use Value: Active discharge (100 Ω) clears residual charge in <10 ms, preventing cross-talk during multi-sensor time-division multiplexing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-1902E/MB | 1.9 V fixed, 250 mA, 1.6 µA IQ, no active discharge, SOT-23-5 | Lacks active discharge and higher IQ reduces battery life in always-on sensing; larger footprint than SOT-563 | Choose when higher output current is needed and active discharge is unnecessary. |
| Torex XC6219B192MR-G | 1.9 V fixed, 150 mA, 1.0 µA IQ, no active discharge, SOT-25 | Higher IQ (2×) and no discharge path; lacks thermal hysteresis spec; lower PSRR (45 dB @1 kHz) | Consider only for cost-sensitive, non-sequenced, low-duty-cycle applications where discharge timing is irrelevant. |
Compared with MCP1700T-1902E/MB and XC6219B192MR-G, the NCP170AXV190T2G uniquely combines ultra-low 0.5 µA IQ, integrated active discharge, and SOT-563 miniaturization - making it optimal for space- and energy-constrained image sensor and wearable medical designs requiring precise rail control and fast sequencing.
Availability
NCP170AXV190T2G is available at Aetrix Electronics and suitable for portable medical devices, battery-powered imaging systems, and wireless edge nodes requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for NCP170AXV190T2G 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 is a global semiconductor leader focused on energy-efficient innovation for automotive, industrial, cloud, and IoT applications, with broad analog, power, and sensing portfolios.
The NCP170 series was designed specifically for ultra-low-power portable electronics - emphasizing nanoscale quiescent current, miniature packaging, and seamless integration with modern sensor and wireless SoCs.
FAQ
What is the output voltage tolerance of the NCP170AXV190T2G over temperature?
The NCP170AXV190T2G maintains ±1% output voltage accuracy across the full operating junction temperature range of −40°C to +85°C. At +25°C, the output is tightly specified at 1.881 V to 1.919 V; over temperature, it remains within 1.862 V to 1.938 V - ensuring reliable operation for precision analog circuits like image sensor bias rails.
Does the NCP170AXV190T2G require an external capacitor for stability?
Yes, the NCP170AXV190T2G requires a minimum 1 µF ceramic output capacitor (X5R/X7R) placed close to the OUT and GND pins for stability and optimal transient response. Input capacitance of 1 µF is also recommended. The device is internally compensated and does not support external compensation networks.
What is the purpose of the NC pin (Pin 6) on the NCP170AXV190T2G SOT-563 package?
Pin 6 is a no-connect terminal - it is not bonded to any internal die structure and serves no electrical function. It must remain unconnected on the PCB layout to prevent unintended coupling or solder bridging that could compromise thermal performance or EMI behavior in high-density designs.
How does the active discharge feature operate in the NCP170AXV190T2G?
When the EN pin is driven LOW, the NCP170AXV190T2G activates an internal 100 Ω discharge path between OUT and GND, discharging the output capacitor rapidly. This prevents floating voltages during power-down sequencing and avoids back-powering of upstream circuitry - a critical requirement in multi-rail systems using the NCP170AXV190T2G.
Is the NCP170AXV190T2G compatible with 1.8 V logic-level microcontrollers?
Yes - the NCP170AXV190T2G's EN pin has a guaranteed HIGH threshold of ≥1.2 V and LOW threshold of ≤0.4 V, making it fully compatible with 1.8 V GPIO outputs. No level-shifter is required, simplifying interface design with low-voltage MCUs commonly used in portable imaging and wearables.
NCP170AXV190T2G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SOT-563, SOT-666
- 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):
- 1.9V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 900 nA
- Current - Supply (Max):
- -
- PSRR:
- -
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 85°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-563
NCP170AXV190T2G FAQ
1.How can I place an order for NCP170AXV190T2G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP170AXV190T2G 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 NCP170AXV190T2G reliable?
The price and inventory of NCP170AXV190T2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP170AXV190T2G is usually 5 days.
3.What payment methods are accepted for NCP170AXV190T2G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP170AXV190T2G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP170AXV190T2G?
NCP170AXV190T2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP170AXV190T2G 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 NCP170AXV190T2G?
For technical support, including NCP170AXV190T2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP170AXV190T2G requirements.
6.How does Aetrix verify that NCP170AXV190T2G is sourced from the original manufacturer or authorized distributors?
All NCP170AXV190T2G 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 NCP170AXV190T2G meets industry standards.
7.What is the process for return or replacement of NCP170AXV190T2G?
All NCP170AXV190T2G units undergo pre-shipment inspection (PSI). If there is an issue with NCP170AXV190T2G, 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 NCP170AXV190T2G part is unused and in its original packaging.
Return procedure for NCP170AXV190T2G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
NCP170AXV190T2G 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
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
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…
