My Inquiry
My Account
onsemi NCP585DSN15T1G
- Part No.:
- NCP585DSN15T1G
- Manufacturer:
- onsemi
- Package:
- SC-74A, SOT-753
- Datasheet:
-
NCP585DSN15T1G.pdf
- Description:
- IC REG LINEAR 1.5V 300MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,544
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
NCP585DSN15T1G from onsemi is a tri-mode 300 mA CMOS low-dropout regulator with enable and ECO pin for mode selection, delivering fixed 1.5 V output in SOT-23-5 package. It supports Chip Enable (CE), Fast Transient (FT), and Low Power (LP) modes, features 310 mV dropout at 300 mA, ±2% output accuracy in FT mode, and ultra-low 3.5 µA quiescent current in LP mode for portable battery-powered instrumentation.
For engineers reviewing the NCP585DSN15T1G datasheet, pinout, applications, or equivalent options, key selection criteria include tri-mode operation flexibility, 1.5 V fixed output stability across −40°C to +85°C, sub-1 µA shutdown current, and compatibility with 1.0 µF ceramic output capacitors in space-constrained handheld designs.
Technical Context
The NCP585DSN15T1G implements a CMOS-based LDO architecture with internal reference, error amplifier, and pass transistor, supporting three distinct operational modes controlled via the ECO pin: CE (chip enable), FT (fast transient response), and LP (ultra-low quiescent current). Mode switching is determined by ECO voltage level-Vin for FT mode and GND for LP mode.
It integrates foldback current limiting, auto-discharge capability in active-high variants, and operates from 1.4 V to 6.0 V input while maintaining 1.5 V regulated output. The device achieves 70 dB PSRR at 1 kHz and exhibits 100 ppm/°C output voltage temperature drift, enabling stable power delivery in thermally varying portable systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.5 V ±2% (FT mode), ±3% (LP mode); ensures precise rail generation for 1.5 V logic or analog subsystems. |
| Max Output Current | 300 mA continuous; supports moderate-power microcontrollers, sensors, and RF front-ends in compact devices. |
| Dropout Voltage | 310 mV typical at 300 mA (VECO = Vin); enables regulation down to Vin ≥ 1.81 V, extending battery runtime in single-cell Li-ion or multi-cell alkaline systems. |
| Quiescent Current | 3.5 µA in LP mode (Vout < 1.6 V); reduces standby power loss in always-on monitoring circuits. |
| PSRR | 70 dB at 1 kHz; suppresses switching noise from upstream DC-DC converters feeding sensitive analog or RF stages. |
| Operating Temp | −40°C to +85°C ambient; qualified for industrial-grade portable equipment including handheld test instruments. |
| Shutdown Current | 0.1 µA typical; minimizes battery drain during deep sleep or system off states. |
Pinout & Package
SOT-23-5 package (Case 1212), surface-mount, Pb-free, 2.8 mm × 2.5 mm footprint with 0.95 mm pin pitch. Exposed pad not present; thermal performance rated at 250 mW power dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - Vin | Input power supply | Accepts 1.4–6.0 V; requires 1.0 µF ceramic decoupling close to pin for stability. |
| 2 - GND | Power ground reference | Primary return path for load and bias currents; must be low-impedance connection to PCB ground plane. |
| 3 - CE | Chip enable control (active-high) | Drives regulator into shutdown when pulled low; threshold is 0.3×Vin (low) / 1.0×Vin (high). |
| 4 - ECO | Mode selection control | Connect to Vin for FT mode (fast response), GND for LP mode (ultra-low Iq); determines operating point. |
| 5 - Vout | Regulated output | Delivers stable 1.5 V; requires 1.0 µF low-ESR ceramic capacitor placed adjacent to pin. |
Key Features
| Feature | Design Value |
|---|---|
| Tri-mode operation | Single device supports CE (enable/disable), FT (high-speed load transient response), and LP (3.5 µA Iq) modes via ECO pin configuration. |
| Low dropout voltage | 310 mV at 300 mA output (1.5 V version); enables efficient regulation from weak or depleting batteries. |
| High PSRR | 70 dB at 1 kHz; maintains clean 1.5 V rail despite ripple from noisy switchers or shared power domains. |
| Auto-discharge support | Active-high variant includes internal discharge path for Vout when disabled; prevents residual voltage hold-up in safety-critical sequencing. |
| Thermal stability | 100 ppm/°C output drift; ensures consistent 1.5 V accuracy across operating temperature range without calibration. |
Applications
| Handheld Test Instrumentation | Portable Medical Sensors |
|---|---|
Use Scenario: Battery-powered multimeter or oscilloscope probe with microcontroller, ADC, and display backlight. IC Role / Device Role / Timing Role: Primary 1.5 V supply for precision analog front-end and low-voltage logic. Use Value: Tri-mode operation allows LP mode during measurement standby (extending battery life) and FT mode during active sampling (ensuring fast settling after load steps). |
Use Scenario: Wearable pulse oximeter using optical sensor and low-power MCU. IC Role / Device Role / Timing Role: Stable 1.5 V rail for analog photodiode signal conditioning and ADC reference. Use Value: 2% output accuracy and 100 ppm/°C drift maintain measurement repeatability across body-temperature variations. |
| Digital Camcorder Image Sensor Bias | IoT Edge Node Subsystem Regulator |
Use Scenario: Compact camcorder requiring low-noise bias for CMOS image sensor analog core. IC Role / Device Role / Timing Role: Dedicated low-ripple 1.5 V supply isolating sensor analog circuitry from digital noise. Use Value: 70 dB PSRR at 1 kHz rejects switching noise from nearby video processor DC-DC converters. |
Use Scenario: Battery-operated environmental sensor node with BLE radio and microcontroller. IC Role / Device Role / Timing Role: Efficient 1.5 V regulator powering MCU I/O and sensor interface during periodic wake-up cycles. Use Value: 0.1 µA shutdown current and 3.5 µA LP mode minimize average power, enabling multi-year battery life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-1502E/TT | Fixed 1.5 V, 250 mA, 6 µA Iq (typ), no tri-mode; SOT-23-3 package (no ECO/CE pins). | Lacks mode selection and auto-discharge; suitable only for simple always-on or basic enable use cases. | Select when board space is critical and tri-mode functionality is unnecessary. |
| Torex XC6206P152MR-G | Fixed 1.5 V, 250 mA, 1 µA Iq (typ), no ECO pin; SOT-23-5 but CE pin only (no LP/FT differentiation). | Provides lower quiescent current but no fast-transient optimization or configurable low-power behavior. | Prefer for ultra-low-power sleep-dominated applications where transient response is secondary. |
Compared with MCP1700T-1502E/TT and XC6206P152MR-G, the NCP585DSN15T1G uniquely delivers programmable trade-offs between efficiency (LP mode), speed (FT mode), and controllability (CE + ECO), making it optimal for dynamically managed portable systems rather than static-regulation scenarios.
Availability
NCP585DSN15T1G is available at Aetrix Electronics and suitable for handheld instrumentation, portable medical sensors, and IoT edge nodes requiring stable component supply with guaranteed long-term manufacturability and Pb-free compliance.
Supply support for NCP585DSN15T1G 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 NCP585DSN15T1G belongs to the NCP585 series of tri-mode LDO regulators designed specifically for battery-powered portable equipment demanding dynamic power-state optimization without sacrificing output precision or noise performance.
FAQ
What is the maximum input voltage rating for the NCP585DSN15T1G?
The NCP585DSN15T1G has an absolute maximum input voltage (Vin) rating of 6.5 V. Its recommended operating input range is 1.4 V to 6.0 V. Exceeding 6.5 V may cause permanent damage. This rating applies regardless of CE or ECO pin state and is defined under maximum ratings-not recommended operating conditions.
How does the ECO pin affect the NCP585DSN15T1G's quiescent current and dropout voltage?
When ECO = GND, the NCP585DSN15T1G enters Low Power (LP) mode with 3.5 µA quiescent current and 320 mV dropout (typ) at 300 mA. When ECO = Vin, it enters Fast Transient (FT) mode with 80 µA Iq and 310 mV dropout (typ). These values are confirmed in the Electrical Characteristics table for Vout = 1.5 V.
Is the NCP585DSN15T1G compatible with ceramic output capacitors?
Yes, the NCP585DSN15T1G is stable with 1.0 µF ceramic output capacitors, as specified in the Application Information section. Stability is maintained across the full 1–300 mA load range in both FT and LP modes, with no minimum ESR requirement-unlike many older LDOs that mandate tantalum or aluminum electrolytic types.
Does the NCP585DSN15T1G provide reverse-current protection?
No, the NCP585DSN15T1G does not integrate reverse-current protection. If Vout exceeds Vin (e.g., during hot-swap or backup-supply scenarios), current can flow backward from Vout to Vin through the internal pass device. External protection-such as a series Schottky diode-is required in such architectures.
What is the function of the CE pin on the NCP585DSN15T1G, and what are its logic thresholds?
The CE pin on the NCP585DSN15T1G is an active-high enable input. It asserts regulation when CE ≥ 1.0 × Vin (typical high threshold) and disables the output (entering shutdown) when CE ≤ 0.3 × Vin (typical low threshold). In shutdown, quiescent current drops to 0.1 µA, and Vout discharges via the internal auto-discharge path.
NCP585DSN15T1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- 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):
- 1.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.45V @ 300mA
- Current - Output:
- 300mA
- Current - Quiescent (Iq):
- 90 µA
- Current - Supply (Max):
- 111 µA
- PSRR:
- -
- Control Features:
- Enable
- Protection Features:
- Over Current
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
NCP585DSN15T1G FAQ
1.How can I place an order for NCP585DSN15T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP585DSN15T1G 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 NCP585DSN15T1G reliable?
The price and inventory of NCP585DSN15T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP585DSN15T1G is usually 5 days.
3.What payment methods are accepted for NCP585DSN15T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP585DSN15T1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP585DSN15T1G?
NCP585DSN15T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP585DSN15T1G 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 NCP585DSN15T1G?
For technical support, including NCP585DSN15T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP585DSN15T1G requirements.
6.How does Aetrix verify that NCP585DSN15T1G is sourced from the original manufacturer or authorized distributors?
All NCP585DSN15T1G 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 NCP585DSN15T1G meets industry standards.
7.What is the process for return or replacement of NCP585DSN15T1G?
All NCP585DSN15T1G units undergo pre-shipment inspection (PSI). If there is an issue with NCP585DSN15T1G, 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 NCP585DSN15T1G part is unused and in its original packaging.
Return procedure for NCP585DSN15T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
NCP585DSN15T1G 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…
