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onsemi NCP585DSAN18T1G
- Part No.:
- NCP585DSAN18T1G
- Manufacturer:
- onsemi
- Package:
- 6-VQFN Exposed Pad
- Datasheet:
-
NCP585DSAN18T1G.pdf
- Description:
- IC REG LINEAR 1.8V 300MA 6HSON
- Quantity:
- Payment:
- Shipping:
Inventory:3,532
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Product details
Overview
NCP585DSAN18T1G from onsemi is a tri-mode 300 mA CMOS low-dropout regulator with enable and auto-discharge, delivering a fixed 1.8 V output in HSON-6 package. It supports Fast Transient (FT) and Low Power (LP) modes via the ECO pin, achieves 310 mV dropout at 300 mA, and maintains ±2% output accuracy in FT mode for portable battery-powered systems.
For engineers reviewing the NCP585DSAN18T1G datasheet, pinout, applications, or equivalent options, key selection criteria include tri-mode quiescent current scaling (60 µA FT / 3.5 µA LP), 70 dB PSRR at 1 kHz, 100 ppm/°C temperature drift, and HSON-6 thermal performance for space-constrained handheld instrumentation.
Technical Context
The NCP585DSAN18T1G implements a CMOS-based LDO architecture with three configurable operating modes: Chip Enable (CE), Fast Transient (FT), and Low Power (LP). Mode selection is controlled exclusively by the ECO pin voltage-high for FT mode (60 µA Iq, 40 mV load regulation), low for LP mode (3.5 µA Iq, 30 mV load regulation).
It integrates foldback current limiting, auto-discharge functionality during shutdown, and operates across an input range of 1.4–6.0 V. The device requires no external compensation and supports stable operation with 1.0 µF tantalum output capacitors over full load and temperature ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.8 V ±2% (FT mode), ±3% (LP mode); enables precise core logic supply in portable SoC designs. |
| Max Output Current | 300 mA continuous; sufficient for powering microcontrollers, sensors, and RF transceivers in handheld devices. |
| Dropout Voltage | 310 mV typical at 300 mA (VECO = Vin); allows operation down to Vin = 2.11 V while maintaining regulation. |
| Quiescent Current | 60 µA (FT mode, Vout = 1.8 V), 3.5 µA (LP mode, Vout < 1.6 V); extends battery life in standby and active states. |
| PSRR | 70 dB at 1 kHz (Iout = 50 mA, Vout = 0.9 V); suppresses switching noise from upstream DC-DC converters. |
| Temp Coefficient | 100 ppm/°C; ensures <±18 mV output shift over −40°C to +85°C ambient, critical for precision analog subsystems. |
| Shutdown Current | 0.1 µA typical; minimizes leakage when system is powered off via CE pin control. |
Pinout & Package
HSON-6 (Case 506AE) package with exposed thermal pad; 2.9 mm × 3.0 mm footprint, 0.95 mm pitch, 0.7–0.9 mm height; optimized for high thermal dissipation in compact layouts.
| 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 | Common return path for input/output currents; connects to exposed thermal pad for thermal management. |
| 3 (CE) | Chip enable (active-high) | Drives internal pass transistor; logic-high ≥1.0 V enables regulation, logic-low ≤0.3 V disables output and activates auto-discharge. |
| 4 (ECO) | Mode selection control | VECO = Vin selects FT mode (fast response); VECO = GND selects LP mode (ultra-low Iq). |
| 5 (Vout) | Regulated output | Delivers 1.8 V ±2%; requires 1.0 µF low-ESR capacitor adjacent to pin for transient stability. |
| 6 (NC) | No connect | Internally unconnected; must remain floating or tied to GND per layout best practice-no electrical function. |
Key Features
| Feature | Design Value |
|---|---|
| Tri-mode operation | Single device supports three distinct power states: CE (on/off), FT (performance), and LP (battery conservation) - reduces BOM count in multi-power-domain systems. |
| Auto-discharge circuit | Actively discharges Vout to GND within milliseconds after CE deactivation - prevents residual voltage from interfering with downstream logic sequencing. |
| Foldback current protection | Reduces output current during short-circuit events to limit power dissipation and prevent thermal runaway in HSON-6 package. |
| Pb-free HSON-6 package | RoHS-compliant 6-pin thermally enhanced package with exposed pad; achieves 400 mW power dissipation rating and simplified PCB thermal relief design. |
| Wide input voltage range | Operates from 1.4 V (enabling single-cell Li-ion or NiMH use) up to 6.0 V (supporting USB or wall-adapter inputs) without external components. |
Applications
| Portable Medical Sensors | Wireless IoT Edge Nodes |
|---|---|
Use Scenario: Wearable pulse oximeter with Bluetooth LE connectivity operating from a single 3.7 V Li-ion cell. IC Role / Device Role / Timing Role: Primary 1.8 V supply for BLE SoC and optical sensor ASIC, dynamically switching between FT mode during data transmission and LP mode during sleep cycles. Use Value: 3.5 µA LP-mode Iq extends battery runtime beyond 12 months; 310 mV dropout enables usable voltage down to 2.11 V before brownout. | Use Scenario: Battery-powered environmental monitor using ultra-low-power MCU and sub-GHz RF transceiver. IC Role / Device Role / Timing Role: Stable 1.8 V rail for MCU core and RF front-end; ECO pin driven by MCU GPIO to toggle between FT (TX/RX bursts) and LP (deep-sleep) states. Use Value: 60 µA FT-mode Iq ensures fast wake-up response; 70 dB PSRR isolates sensitive RF receiver from digital switching noise. |
| Industrial Handheld Scanners | Smart Camera Modules |
Use Scenario: Rugged barcode scanner with laser diode driver and image sensor, powered by replaceable AA batteries. IC Role / Device Role / Timing Role: Main 1.8 V supply for image signal processor and interface logic; CE pin synchronized with scan trigger to minimize idle consumption. Use Value: 0.1 µA shutdown current eliminates battery drain during storage; foldback protection safeguards against accidental Vout short during field service. | Use Scenario: Embedded vision module in automotive dashcam, requiring reliable 1.8 V for image sensor and ISP under varying ambient temperatures. IC Role / Device Role / Timing Role: Precision 1.8 V bias for CIS analog front-end; leverages 100 ppm/°C tempco to maintain ADC reference stability across −40°C to +85°C. Use Value: ±2% output accuracy and 15 mV load regulation ensure consistent pixel gain calibration; HSON-6 thermal pad sustains 85°C junction temperature during continuous recording. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1804T-1802I/OT | Fixed 1.8 V, 150 mA max, SOT-23-5, 220 mV dropout at 150 mA, 3 µA Iq (quiescent), no tri-mode or ECO pin. | Limited to low-current, single-mode applications; lacks dynamic mode switching and auto-discharge. | Select when cost-sensitive, low-Iq only is required and 300 mA output is unnecessary. |
| TLS850F2BHTSA1 | Automotive-grade 1.8 V LDO, 500 mA, PG-SCT595-5, 250 mV dropout, 35 µA Iq, AEC-Q100 qualified, no tri-mode. | Designed for automotive infotainment and ADAS; includes reset flag and higher reliability screening but no LP/FT mode flexibility. | Select for automotive environments requiring qualification and higher current, where tri-mode optimization is secondary. |
Compared with MCP1804T-1802I/OT and TLS850F2BHTSA1, the NCP585DSAN18T1G uniquely delivers programmable tri-mode operation and auto-discharge in a compact HSON-6 package-enabling adaptive power management unattainable with fixed-mode alternatives.
Availability
NCP585DSAN18T1G is available at Aetrix Electronics and suitable for portable medical sensors, wireless IoT edge nodes, industrial handheld scanners, and smart camera modules requiring stable component supply with guaranteed long-term sourcing.
Supply support for NCP585DSAN18T1G 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 manufacturer 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 LDO portfolio, designed specifically for battery-powered portable electronics demanding ultra-low quiescent current, tight output tolerance, and dynamic power-state adaptability across diverse operating conditions.
FAQ
What is the maximum input voltage rating for the NCP585DSAN18T1G?
The NCP585DSAN18T1G has an absolute maximum input voltage rating of 6.5 V on the Vin pin. Its recommended operating input range is 1.4 V to 6.0 V, enabling compatibility with single-cell Li-ion (3.0–4.2 V), two-cell alkaline (2.0–3.2 V), and USB-powered (5.0 V) systems. Exceeding 6.5 V risks permanent damage per the Absolute Maximum Ratings table.
How does the ECO pin affect the NCP585DSAN18T1G's quiescent current and regulation performance?
The ECO pin directly selects between Fast Transient (FT) and Low Power (LP) modes in the NCP585DSAN18T1G: tying ECO to Vin enables FT mode (60 µA Iq, 40 mV load regulation), while tying ECO to GND enables LP mode (3.5 µA Iq, 30 mV load regulation). This dual-mode capability allows dynamic trade-offs between response speed and battery longevity without changing hardware.
Does the NCP585DSAN18T1G require external capacitors, and what values are recommended?
Yes, the NCP585DSAN18T1G requires external capacitors: a 1.0 µF ceramic capacitor between Vin and GND for input decoupling, and a 1.0 µF low-ESR tantalum or ceramic capacitor between Vout and GND for output stability. These values are validated in the datasheet for all operating modes and load conditions; deviating may cause instability or degraded transient response.
What is the purpose of the NC pin on the NCP585DSAN18T1G HSON-6 package?
Pin 6 of the NCP585DSAN18T1G is marked NC (No Connect) and is internally unconnected. It must be left floating or tied to GND per PCB layout best practices-it serves no electrical function and should never be used as a signal or power path. This pin exists for mechanical symmetry and package standardization, not circuit operation.
Can the NCP585DSAN18T1G be used in automotive applications?
The NCP585DSAN18T1G is specified for −40°C to +85°C operating ambient temperature and meets industrial reliability standards, but it is not AEC-Q100 qualified. For automotive applications requiring qualification (e.g., infotainment, body control), onsemi offers automotive-grade alternatives like TLS850F2BHTSA1. Use NCP585DSAN18T1G only in non-safety-critical, non-qualified automotive subsystems with full system-level validation.
NCP585DSAN18T1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 6-VQFN Exposed Pad
- 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:
- 6-HSON (2.9x3)
NCP585DSAN18T1G FAQ
1.How can I place an order for NCP585DSAN18T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP585DSAN18T1G 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 NCP585DSAN18T1G reliable?
The price and inventory of NCP585DSAN18T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP585DSAN18T1G is usually 5 days.
3.What payment methods are accepted for NCP585DSAN18T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP585DSAN18T1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP585DSAN18T1G?
NCP585DSAN18T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP585DSAN18T1G 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 NCP585DSAN18T1G?
For technical support, including NCP585DSAN18T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP585DSAN18T1G requirements.
6.How does Aetrix verify that NCP585DSAN18T1G is sourced from the original manufacturer or authorized distributors?
All NCP585DSAN18T1G 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 NCP585DSAN18T1G meets industry standards.
7.What is the process for return or replacement of NCP585DSAN18T1G?
All NCP585DSAN18T1G units undergo pre-shipment inspection (PSI). If there is an issue with NCP585DSAN18T1G, 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 NCP585DSAN18T1G part is unused and in its original packaging.
Return procedure for NCP585DSAN18T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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