My Inquiry
My Account
onsemi NCP585HSN18T1G
- Part No.:
- NCP585HSN18T1G
- Manufacturer:
- onsemi
- Package:
- SC-74A, SOT-753
- Datasheet:
-
NCP585HSN18T1G.pdf
- Description:
- IC REG LINEAR 1.8V 300MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,982
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
NCP585HSN18T1G from onsemi is a tri-mode 300 mA CMOS low-dropout regulator with enable, delivering a fixed 1.8 V output. It operates in Chip Enable (CE), Fast Transient (FT), and Low Power (LP) modes via the ECO pin, features 310 mV dropout at 300 mA (FT mode), ±2% output voltage accuracy (FT), and ultra-low 60 µA quiescent current (FT mode, Vout = 1.8 V). It is used in portable battery-powered systems requiring precise regulation and dynamic power-state management.
For engineers reviewing the NCP585HSN18T1G datasheet, pinout, applications, or equivalent options, this page delivers verified technical context, real-world operating parameters, package-specific layout guidance, and validated alternative options for portable instrumentation, camcorders, and handheld medical devices where input voltage ranges up to 6.5 V and thermal stability across −40°C to +85°C are critical.
Technical Context
The NCP585HSN18T1G implements a CMOS-based LDO architecture with three configurable operational states: CE mode (full shutdown), FT mode (high-speed transient response, 40 mV load regulation), and LP mode (ultra-low Iq, 3.5 µA for Vout < 1.6 V). Its internal reference and error amplifier maintain tight regulation under varying line (0.01%/V) and load conditions.
Mode selection is controlled exclusively by the ECO pin: logic high (VECO = Vin) enables FT mode; logic low (VECO = GND) activates LP mode. The device includes fold-back current limiting, auto-discharge capability (in active-high variants), and supports ceramic or tantalum output capacitors down to 0.1 µF with stable ESR ranges defined per load current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.8 V ±2% (FT mode); ±3% (LP mode) - ensures stable core voltage for 1.8 V logic rails without external feedback. |
| Max Output Current | 300 mA - sufficient to power microcontrollers, sensors, and RF front-ends in compact portable designs. |
| Dropout Voltage | 310 mV @ 300 mA (FT mode, Vout = 1.8 V) - enables operation from Li-ion cells down to ~2.1 V input while maintaining regulation. |
| Quiescent Current | 60 µA (FT mode, Vout = 1.8 V); 4.5 µA (LP mode, Vout ≥ 1.8 V) - extends battery life in sleep/standby states. |
| PSRR | 70 dB @ 1 kHz - suppresses switching noise from upstream DC-DC converters feeding the LDO input. |
| Operating Temp | −40°C to +85°C ambient - qualified for industrial-grade handheld equipment and outdoor instrumentation. |
| Input Voltage Range | 1.4 V to 6.0 V - compatible with single-cell Li-ion, dual-cell alkaline, or regulated intermediate rails. |
Pinout & Package
HSON−6 package (Case 506AE), 2.9 mm × 3.0 mm × 0.9 mm profile, exposed thermal pad, Pb-free, moisture-sensitive level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Vin) | Power input | Accepts 1.4–6.0 V supply; requires 1.0 µF ceramic decoupling close to pin for stability. |
| 2 (NC) | No connect | Internally unconnected; must remain floating - no routing or grounding permitted. |
| 3 (Vout) | Regulated output | Delivers fixed 1.8 V; requires low-ESR capacitor (1.0 µF typical) placed adjacent to pin. |
| 4 (ECO) | Mode control | Drives FT mode when pulled to Vin; LP mode when grounded - determines Iq, PSRR, and load regulation behavior. |
| 5 (GND) | Power ground | Primary return path; must be tied directly to exposed thermal pad for thermal and noise performance. |
| 6 (CE) | Chip enable (active high) | Enables regulator when high (≥1.0 V); disables output and reduces shutdown current to 0.1 µA. |
Key Features
| Feature | Design Value |
|---|---|
| Tri-mode operation | Single device supports full-enable (CE), high-performance (FT), and ultra-low-power (LP) states - eliminates need for multiple regulators in multi-power-state systems. |
| Fold-back current protection | Limiting threshold ~50 mA during short-circuit - prevents thermal runaway and enables safe recovery after fault clearance. |
| Low temperature drift | 100 ppm/°C output voltage drift - maintains accuracy across industrial temperature range without calibration. |
| Auto-discharge support | Active-high variant (HSN) includes internal discharge path from Vout to GND when disabled - prevents residual voltage hold-up on downstream circuitry. |
| High ripple rejection | 75 dB @ 120 Hz, 70 dB @ 1 kHz - effectively filters low-frequency noise from battery or buck converter sources. |
Applications
| Portable Medical Sensors | Industrial Handheld Scanners |
|---|---|
Use Scenario: Battery-powered pulse oximeter with Bluetooth LE interface and analog front-end. IC Role / Device Role / Timing Role: Primary 1.8 V supply for MCU core, ADC reference, and BLE radio transceiver. Use Value: Tri-mode operation allows LP mode during sensor idle intervals (Iq = 4.5 µA), extending runtime; FT mode ensures fast wake-up and stable rail during measurement bursts. |
Use Scenario: Rugged barcode scanner with laser diode driver and image sensor, operating from 2×AA batteries. IC Role / Device Role / Timing Role: Regulates 1.8 V for FPGA configuration memory and interface logic. Use Value: 310 mV dropout enables >1000 cycles of operation down to 2.1 V battery voltage; HSON-6 thermal pad supports continuous 300 mA in confined enclosure. |
| Camcorder Image Signal Processor | Wearable Health Monitor |
Use Scenario: Compact HD camcorder with rolling-shutter CMOS sensor and video encoder ASIC. IC Role / Device Role / Timing Role: Supplies clean 1.8 V to sensor digital core and serializer interface. Use Value: 70 dB PSRR at 1 kHz rejects noise from DC-DC converters powering motor drivers and display backlight - preserving SNR in captured video. |
Use Scenario: Arm-worn ECG monitor with ultra-low-power MCU and analog front-end, running 7-day battery life. IC Role / Device Role / Timing Role: Powers MCU and signal chain in LP mode during sleep; switches to FT mode during data acquisition. Use Value: 4.5 µA LP-mode Iq directly contributes to sub-10 µA system sleep current; ±2% accuracy ensures consistent ADC reference across temperature. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1804T-1802E/MB | Fixed 1.8 V, 150 mA, 220 mV dropout @ 150 mA, no tri-mode - only enable/shutdown control. | Lacks ECO-driven FT/LP modes; lower current rating limits use in higher-power peripherals. | Choose when design requires simpler control interface and ≤150 mA load; not suitable for dynamic power-state scaling. |
| Torex XC6219B182MR-G | Fixed 1.8 V, 300 mA, 250 mV dropout @ 300 mA, 1.0 µA Iq (shutdown), but no LP/FT mode distinction - single low-Iq operating state. | Provides ultra-low quiescent current but lacks configurable transient performance; no ECO pin or mode-select capability. | Prefer for always-on, ultra-low-power monitoring nodes where fast load-step response is not required. |
Compared with MCP1804T-1802E/MB and XC6219B182MR-G, the NCP585HSN18T1G uniquely delivers programmable trade-offs between transient response speed and quiescent current via its dedicated ECO pin - enabling one IC to serve both high-dynamic and ultra-low-power phases within the same system without hardware change.
Availability
NCP585HSN18T1G is available at Aetrix Electronics and suitable for portable medical sensors, industrial handheld scanners, camcorders, wearable health monitors, and battery-backed instrumentation requiring stable component supply, long-term lifecycle support, and Pb-free compliance.
Supply support for NCP585HSN18T1G 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 NCP585 series belongs to onsemi's precision low-dropout regulator product line, designed specifically for space-constrained, battery-operated portable electronics demanding multi-mode power optimization and robust thermal performance in HSON-6 packaging.
FAQ
What is the maximum input voltage supported by the NCP585HSN18T1G?
The NCP585HSN18T1G supports an absolute maximum input voltage of 6.5 V, with recommended operating input range from 1.4 V to 6.0 V. Exceeding 6.5 V risks permanent damage. For reliable operation with 1.8 V output, minimum input is 2.11 V (1.8 V + 310 mV dropout), making it compatible with single-cell Li-ion (2.7–4.2 V) and two-cell alkaline (2.4–3.2 V) sources.
How does the ECO pin affect the performance of the NCP585HSN18T1G?
The ECO pin selects between Fast Transient (FT) mode (VECO = Vin) and Low Power (LP) mode (VECO = GND). In FT mode, the NCP585HSN18T1G delivers 40 mV load regulation and 60 µA quiescent current at 1.8 V; in LP mode, load regulation degrades to 30 mV but Iq drops to 4.5 µA. This pin enables dynamic optimization of efficiency versus responsiveness without changing external components.
Is the NCP585HSN18T1G pin-compatible with other variants in the NCP585 family?
Yes - all SOT23-5 variants (e.g., NCP585HSN10T1G, NCP585HSN12T1G) share identical pinout and footprint with the NCP585HSN18T1G. The HSON-6 variants (e.g., NCP585HSAN18T1G) use a different package and are not pin-compatible; they feature an NC pin in position 2 instead of GND, and require separate PCB layout.
What output capacitor is recommended for stable operation of the NCP585HSN18T1G?
A 1.0 µF ceramic capacitor with low ESR is recommended for the NCP585HSN18T1G output. Stability analysis (Figure 32–35) confirms stable operation across 0.1–100 µF with appropriate ESR ranges. Tantalum capacitors (1.0 µF) are also validated. Place the capacitor as close as possible to the Vout and GND pins to minimize loop inductance and ensure transient response integrity.
Does the NCP585HSN18T1G include reverse-current protection?
No - the NCP585HSN18T1G does not integrate reverse-current protection. When input voltage falls below output voltage (e.g., during battery swap or input disconnect), current can flow backward from Vout to Vin through the pass element. External protection (e.g., series Schottky diode or ideal diode controller) is required if reverse-current blocking is needed in the application.
NCP585HSN18T1G 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):
- 1.8V
- 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
NCP585HSN18T1G FAQ
1.How can I place an order for NCP585HSN18T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP585HSN18T1G 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 NCP585HSN18T1G reliable?
The price and inventory of NCP585HSN18T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP585HSN18T1G is usually 5 days.
3.What payment methods are accepted for NCP585HSN18T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP585HSN18T1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP585HSN18T1G?
NCP585HSN18T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP585HSN18T1G 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 NCP585HSN18T1G?
For technical support, including NCP585HSN18T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP585HSN18T1G requirements.
6.How does Aetrix verify that NCP585HSN18T1G is sourced from the original manufacturer or authorized distributors?
All NCP585HSN18T1G 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 NCP585HSN18T1G meets industry standards.
7.What is the process for return or replacement of NCP585HSN18T1G?
All NCP585HSN18T1G units undergo pre-shipment inspection (PSI). If there is an issue with NCP585HSN18T1G, 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 NCP585HSN18T1G part is unused and in its original packaging.
Return procedure for NCP585HSN18T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
NCP585HSN18T1G 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…
