My Inquiry
My Account
onsemi NCP502SN35T1G
- Part No.:
- NCP502SN35T1G
- Manufacturer:
- onsemi
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
NCP502SN35T1G.pdf
- Description:
- IC REG LINEAR 3.5V 80MA 5TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,101
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
NCP502SN35T1G from onsemi is a fixed-output, low-quiescent-current CMOS linear voltage regulator delivering 3.5 V at up to 80 mA with 40 µA typical quiescent current, 2.0% output voltage accuracy, and 850 mV dropout (at 80 mA, TA = −40 °C to +85 °C). It operates from 1.3 V enable threshold logic and is housed in TSOP-5 package for space-constrained portable battery-powered systems such as handheld instruments and camcorders.
For engineers reviewing the NCP502SN35T1G datasheet, pinout, applications, or equivalent options, key selection criteria include ultra-low IQ for standby power optimization, ceramic-capacitor compatibility, industrial temperature range (−40 °C to +85 °C), and enable-controlled shutdown functionality in compact surface-mount form factor.
Technical Context
The NCP502SN35T1G integrates a PMOS pass transistor, precision voltage reference, error amplifier, and thermal/current protection circuits. Its architecture enables stable regulation with low ESR ceramic capacitors (≥1.0 µF) and supports fast enable/disable transitions with defined 1.3 V (turn-on) and 0.3 V (turn-off) thresholds.
Designed for low-noise, low-power applications, it delivers 180 µVRMS output noise (100 Hz–100 kHz), 55 dB ripple rejection at 1 kHz, and maintains ±0.8 mV/mA load regulation across 1–80 mA output current - all while sustaining 2.0% initial output accuracy over temperature and line variations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.5 V ±2.0% (ensures stable MCU core or sensor rail within tolerance across temp and load) |
| Quiescent Current | 40 µA typical (enables multi-year battery life in always-on monitoring nodes) |
| Dropout Voltage | 850 mV max at 80 mA (allows operation from single-cell Li-ion down to ~4.35 V input) |
| Enable Threshold | 1.3 V (high), 0.3 V (low) - compatible with 1.8 V/3.3 V GPIO without level-shifting |
| Thermal Range | −40 °C to +85 °C (supports industrial-grade portable equipment deployment) |
| Ripple Rejection | 55 dB at 1 kHz (suppresses switching noise from upstream DC/DC converters) |
| Output Noise | 180 µVRMS (100 Hz–100 kHz) - suitable for analog sensor signal chains |
Pinout & Package
Package: TSOP-5 (SOT-23-5, Case 483), 3.00 mm × 1.50 mm × 0.95 mm, Pb-free, surface-mount.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - Vin | Positive power supply input | Accepts 1.3 V to 12 V; must be decoupled with ≥1.0 µF ceramic capacitor near pin |
| 2 - GND | Power ground reference | Low-impedance return path; requires wide PCB trace to minimize noise coupling |
| 3 - Enable | Logic-controlled regulator enable | Pull ≥1.3 V to activate; pull ≤0.3 V to disable; float or tie to Vin if unused |
| 4 - N/C | No internal connection | Not bonded; PCB pad may be omitted or left unconnected - no routing required |
| 5 - Vout | Regulated output voltage | Delivers 3.5 V ±2.0%; requires ≥1.0 µF ceramic output capacitor for stability |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 40 µA typical - extends battery runtime in sleep-mode IoT endpoints |
| Ceramic capacitor compatibility | Stable with 1.0 µF ceramic output cap (no ESR minimum) - reduces BOM cost and board area |
| High output accuracy | ±2.0% over temperature and line - eliminates need for post-regulation trimming in precision rails |
| Integrated protection | Current limit and thermal shutdown - prevents damage during overload or poor heatsinking |
| Enable control with defined thresholds | 1.3 V turn-on / 0.3 V turn-off - ensures clean sequencing with standard logic families |
Applications
| Portable Medical Sensors | Industrial Handheld Meters |
|---|---|
Use Scenario: Battery-powered pulse oximeter with analog front-end and BLE radio. IC Role / Device Role / Timing Role: Provides clean, low-noise 3.5 V bias for op-amps and ADC reference. Use Value: 180 µVRMS noise and 55 dB ripple rejection preserve signal integrity in sub-mV physiological measurements. |
Use Scenario: Ruggedized multimeter with LCD display and microcontroller. IC Role / Device Role / Timing Role: Supplies regulated 3.5 V to MCU and display driver from variable alkaline battery stack. Use Value: 850 mV dropout enables >300 hours of operation from two AA cells (2.4–3.2 V range). |
| Wireless Sensor Nodes | Camcorder Power Management |
Use Scenario: LoRaWAN soil moisture node operating on CR2032 coin cell. IC Role / Device Role / Timing Role: Powers RF transceiver and microcontroller during brief transmit bursts. Use Value: 40 µA quiescent current enables >5-year shelf life; enable pin allows deep-sleep control via MCU GPIO. |
Use Scenario: Consumer camcorder using single Li-ion cell (3.0–4.2 V) for image sensor and video processor. IC Role / Device Role / Timing Role: Generates stable 3.5 V rail for CMOS image sensor interface. Use Value: ±2.0% output accuracy ensures consistent analog gain calibration across battery discharge cycle. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-3502E/TT | 3.5 V, 250 mA, 1.6 µA IQ, SOT-23-3 (no enable) | Lacks enable pin and current limit; lower IQ but higher max load | Choose when ultra-low standby power dominates and enable control is unnecessary |
| TCS2115-3.5V | 3.5 V, 150 mA, 65 µA IQ, TSOP-5 with enable (1.2 V high, 0.4 V low) | Slightly higher IQ and looser enable thresholds; same package footprint | Choose when tighter enable hysteresis or higher output current is required |
Compared with MCP1700T-3502E/TT and TCS2115-3.5V, the NCP502SN35T1G offers optimal balance of ultra-low IQ (40 µA), precise enable thresholds (1.3 V/0.3 V), built-in current/thermal protection, and verified ceramic-capacitor stability - making it ideal for cost-sensitive, battery-limited designs requiring robustness and predictable shutdown behavior.
Availability
NCP502SN35T1G is available at Aetrix Electronics and suitable for portable medical sensors, industrial handheld meters, wireless sensor nodes, and camcorder power management requiring stable component supply with long-term lifecycle support.
Supply support for NCP502SN35T1G 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 silicon solutions for automotive, industrial, cloud, and consumer markets.
The NCP502 series belongs to onsemi's low-power linear regulator product line, designed specifically for battery-operated portable electronics demanding ultra-low quiescent current, small footprint, and reliable performance under varying load and temperature conditions.
FAQ
What is the maximum input voltage rating for the NCP502SN35T1G?
The NCP502SN35T1G has an absolute maximum input voltage of 12 V, as specified in the Maximum Ratings table. Operation above this voltage risks permanent device damage. For reliable long-term use, design input voltage to remain within 3.5 V + dropout (≤4.35 V at 80 mA) plus margin - typically ≤6 V in most battery-powered applications.
Does the NCP502SN35T1G require an external output capacitor, and what type is recommended?
Yes, the NCP502SN35T1G requires a minimum 1.0 µF ceramic output capacitor for stability, as confirmed in the Applications Information section. TDK part numbers C2012X5R1C105K or C1608X5R1A105K are explicitly recommended. Unlike many LDOs, it imposes no minimum ESR requirement, enabling use of low-cost, low-profile X5R/X7R ceramics without risk of oscillation.
Is the NCP502SN35T1G still in active production, or has it been discontinued?
The NCP502SN35T1G is marked as discontinued in the official onsemi datasheet revision 23 (April 2026), per the Ordering Information table on page 7. However, Aetrix Electronics maintains active inventory and provides last-time-buy support, extended lifecycle coordination, and qualified drop-in alternatives for ongoing production programs.
What is the thermal resistance (RJA) of the NCP502SN35T1G in its TSOP-5 package?
The NCP502SN35T1G in TSOP-5 (Case 483) has a junction-to-ambient thermal resistance (RJA) of 205 °C/W under standard test conditions: 1 oz copper, 100 mm² spreading area on FR4 PCB. This value enables calculation of maximum allowable power dissipation - e.g., 250 mW at 25 °C ambient - critical for thermal design in enclosed handheld enclosures.
Can the NCP502SN35T1G be used with a 1.8 V microcontroller GPIO to control its enable pin?
Yes, the NCP502SN35T1G can be directly enabled by a 1.8 V GPIO: its enable threshold is 1.3 V (min turn-on), well below 1.8 V logic high. When the GPIO drives low (≤0.3 V), the device disables cleanly. No level-shifter is needed, simplifying interface design and reducing component count in mixed-voltage systems.
NCP502SN35T1G 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):
- 12V
- Voltage - Output (Min/Fixed):
- 3.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 1.2V @ 80mA
- Current - Output:
- 80mA
- Current - Quiescent (Iq):
- 40 µA
- Current - Supply (Max):
- 90 µA
- PSRR:
- 55dB (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
NCP502SN35T1G FAQ
1.How can I place an order for NCP502SN35T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP502SN35T1G 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 NCP502SN35T1G reliable?
The price and inventory of NCP502SN35T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP502SN35T1G is usually 5 days.
3.What payment methods are accepted for NCP502SN35T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP502SN35T1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP502SN35T1G?
NCP502SN35T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP502SN35T1G 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 NCP502SN35T1G?
For technical support, including NCP502SN35T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP502SN35T1G requirements.
6.How does Aetrix verify that NCP502SN35T1G is sourced from the original manufacturer or authorized distributors?
All NCP502SN35T1G 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 NCP502SN35T1G meets industry standards.
7.What is the process for return or replacement of NCP502SN35T1G?
All NCP502SN35T1G units undergo pre-shipment inspection (PSI). If there is an issue with NCP502SN35T1G, 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 NCP502SN35T1G part is unused and in its original packaging.
Return procedure for NCP502SN35T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
NCP502SN35T1G 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…
