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onsemi NCP585DSAN12T1G
- Part No.:
- NCP585DSAN12T1G
- Manufacturer:
- onsemi
- Package:
- 6-VQFN Exposed Pad
- Datasheet:
-
NCP585DSAN12T1G.pdf
- Description:
- IC REG LINEAR 1.2V 300MA 6HSON
- Quantity:
- Payment:
- Shipping:
Inventory:1,628
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Product details
Overview
NCP585DSAN12T1G from onsemi is a tri-mode 300 mA CMOS low-dropout regulator with enable and auto-discharge functionality, delivering a fixed 1.2 V output in HSON-6 package. It supports CE (chip enable), Fast Transient (FT), and Low Power (LP) modes via the ECO pin, achieves 550 mV dropout at 300 mA (FT mode), and maintains ±2% output accuracy across −40°C to +85°C for portable battery-powered systems.
For engineers reviewing the NCP585DSAN12T1G datasheet, pinout, applications, or equivalent options, this page delivers verified technical context, mode-specific quiescent current values (80 µA FT / 3.5 µA LP), dropout behavior per load and temperature, ripple rejection up to 75 dB at 120 Hz, and validated HSON-6 terminal mapping - all critical for ultra-low-power wearable and imaging power rail design.
Technical Context
The NCP585DSAN12T1G implements a CMOS-based LDO architecture with three user-selectable operating modes: CE-active high enables regulation; ECO = Vin selects Fast Transient mode for dynamic load response; ECO = GND selects Low Power mode for ultra-low Iq. Its internal foldback protection limits output short-circuit current to 50 mA, and the integrated auto-discharge path (N-channel MOSFET, RLow = 60 Ω) actively discharges VOUT when disabled.
Line regulation is 0.01%/V in FT mode and 0.05%/V in LP mode; load regulation is 15 mV (FT) and 40 mV (LP) over full load range. Output voltage temperature coefficient is 100 ppm/°C, and PSRR reaches 70 dB at 1 kHz - enabling stable 1.2 V supply for noise-sensitive analog and mixed-signal circuits in compact portable devices.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.2 V ±2% (FT mode), ±3% (LP mode) - ensures precise core voltage for 1.2 V logic and RF bias rails. |
| Max Output Current | 300 mA continuous - supports moderate-power microcontrollers, sensors, and camera modules. |
| Dropout Voltage | 310 mV typical at 300 mA (FT mode, VOUT = 1.2 V) - enables operation from single-cell Li-ion (3.0 V min) or two-cell alkaline. |
| Quiescent Current | 80 µA (FT mode, VOUT < 1.8 V), 3.5 µA (LP mode, VOUT < 1.6 V) - extends battery life in standby and sleep states. |
| PSRR | 75 dB at 120 Hz, 70 dB at 1 kHz - suppresses switching noise from upstream DC-DC converters feeding the LDO input. |
| Shutdown Current | 0.1 µA max - eliminates leakage during system off-state, critical for always-on sensor nodes. |
| Operating Temp | −40°C to +85°C ambient - qualified for industrial-grade portable instrumentation and outdoor handheld devices. |
Pinout & Package
HSON-6 (Case 506AE) package: 2.9 mm × 3.0 mm × 0.9 mm body, exposed thermal pad, lead-free, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VIN | Main power input (up to 6.5 V); requires 1.0 µF ceramic decoupling to GND per datasheet layout guidance. |
| 2 | GND | Power ground reference; connects to exposed thermal pad for thermal dissipation and noise reduction. |
| 3 | CE | Active-high chip enable; drives internal pass element; threshold VTHENH = 1.0 V (min), VTHENL = 0.3 V (max). |
| 4 | VOUT | Regulated 1.2 V output; requires 1.0 µF low-ESR capacitor placed adjacent to pin per stability guidelines. |
| 5 | ECO | Mode selection: connect to VIN for Fast Transient mode, to GND for Low Power mode - determines Iq, PSRR, and load regulation. |
| 6 | NC | No-connect terminal - left unconnected per manufacturer marking diagram and pin function table. |
Key Features
| Feature | Design Value |
|---|---|
| Tri-mode operation | Selects between Fast Transient (low noise, fast response) and Low Power (ultra-low Iq) via ECO pin - enables adaptive power management without external logic. |
| Auto-discharge circuit | Integrated 60 Ω N-channel MOSFET discharges VOUT when CE = low - prevents floating outputs and ensures clean power-down sequencing. |
| Foldback current limit | 50 mA short-circuit current limit - protects device and source during output faults while minimizing thermal stress. |
| Ultra-low temperature drift | 100 ppm/°C output voltage drift - maintains tight regulation across industrial temperature range without external trimming. |
| High PSRR at low frequency | 75 dB at 120 Hz - effectively rejects ripple from AC-DC adapters or buck converter switching artifacts near line frequency. |
Applications
| Portable Medical Sensors | Wearable Health Monitors |
|---|---|
Use Scenario: Continuous glucose monitor (CGM) with Bluetooth LE MCU and analog front-end requiring stable 1.2 V bias under variable battery voltage. IC Role / Device Role / Timing Role: Primary 1.2 V LDO supplying MCU core, ADC reference, and RF transceiver - dynamically switches to LP mode during sensor sleep cycles. Use Value: 3.5 µA Iq in LP mode extends coin-cell battery life beyond 12 months; 100 ppm/°C drift ensures calibration stability across body temperature range. |
Use Scenario: Optical heart-rate sensor module with photodiode amplifier and pulse-width modulated LED driver operating from single Li-poly cell. IC Role / Device Role / Timing Role: Dedicated 1.2 V rail for analog signal chain - uses FT mode during active measurement bursts for minimal transient droop. Use Value: 15 mV load regulation and 310 mV dropout preserve headroom down to 1.51 V input; auto-discharge prevents LED ghosting after shutdown. |
| Digital Camcorder Image Signal Processor | Handheld Test Equipment |
Use Scenario: High-resolution camcorder with rolling-shutter CMOS image sensor demanding low-noise, low-drift 1.2 V digital core supply. IC Role / Device Role / Timing Role: Clean 1.2 V domain for ISP logic and embedded memory - leverages 75 dB PSRR to reject switching noise from adjacent DC-DC converters. Use Value: 70 dB PSRR at 1 kHz suppresses high-frequency switching artifacts; ±2% accuracy ensures consistent timing margins for pixel clock generation. |
Use Scenario: Portable multimeter with LCD display, precision ADC, and microcontroller running from 2×AA alkaline cells (2.0–3.2 V range). IC Role / Device Role / Timing Role: Main 1.2 V supply for MCU and analog front-end - operates in FT mode during measurement, LP mode during display hold. Use Value: 0.01%/V line regulation maintains accuracy as battery voltage declines; 300 mA capability supports backlight and buzzer loads simultaneously. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1826-1202E/DB | Fixed 1.2 V, 300 mA, SOT-23-5; no tri-mode or ECO pin; 250 mV dropout at 300 mA; 55 µA Iq. | Lacks LP/FT mode switching and auto-discharge; simpler control interface but less flexible power-state optimization. | Choose for cost-sensitive designs where ultra-low Iq and adaptive modes are unnecessary. |
| Torex XC6219B122MR-G | Fixed 1.2 V, 300 mA, SOT-25; only one operating mode; 200 mV dropout at 300 mA; 1 µA Iq; no ECO or auto-discharge. | Lower dropout and Iq, but no mode selection or discharge path - requires external MOSFET for controlled shutdown. | Prefer when minimum dropout and static Iq outweigh need for dynamic mode control and integrated discharge. |
Compared with MCP1826-1202E/DB and XC6219B122MR-G, the NCP585DSAN12T1G uniquely integrates tri-mode operation and auto-discharge in HSON-6, enabling both extended battery life and robust power sequencing - critical for space-constrained, multi-state portable electronics.
Availability
NCP585DSAN12T1G is available at Aetrix Electronics and suitable for portable medical sensors, wearable health monitors, digital camcorders, and handheld test equipment requiring stable component supply, long-term lifecycle support, and Pb-free compliance.
Supply support for NCP585DSAN12T1G 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 NCP585DSAN12T1G belongs to the NCP585 series of tri-mode CMOS LDOs designed specifically for battery-powered portable electronics needing adaptive power efficiency, precise low-voltage regulation, and compact packaging.
FAQ
What is the dropout voltage of the NCP585DSAN12T1G at 300 mA load?
The NCP585DSAN12T1G has a typical dropout voltage of 310 mV at 300 mA output current in Fast Transient (FT) mode with 1.2 V output. In Low Power (LP) mode, dropout increases to 320 mV under identical conditions. This value is measured with VECO = VIN (FT) or VECO = GND (LP), and remains stable across −40°C to +85°C ambient temperature per datasheet Figure 20.
How does the ECO pin affect quiescent current in the NCP585DSAN12T1G?
The ECO pin directly selects operating mode and thus determines quiescent current: when pulled to VIN, the NCP585DSAN12T1G enters Fast Transient mode with 80 µA Iq (VOUT < 1.8 V); when pulled to GND, it enters Low Power mode with 3.5 µA Iq (VOUT < 1.6 V). These values are confirmed in the Electrical Characteristics table on page 3 of the NCP585 datasheet Rev. 14.
Does the NCP585DSAN12T1G include an auto-discharge function?
Yes, the NCP585DSAN12T1G includes an integrated auto-discharge circuit activated when the CE pin is driven low. An internal N-channel MOSFET with RLow = 60 Ω discharges the VOUT capacitor to prevent residual voltage - a feature explicitly documented in the block diagram (Figure 3), pin description (page 3), and electrical characteristics (page 3, RLow parameter).
What package type and dimensions does the NCP585DSAN12T1G use?
The NCP585DSAN12T1G uses the HSON-6 package (Case 506AE), measuring 2.9 mm × 3.0 mm × 0.9 mm with a 0.95 mm pin pitch. It features an exposed thermal pad on the bottom for enhanced heat dissipation and includes Pb-free finish. Full mechanical drawings and soldering footprint details are provided on page 13 of the NCP585 datasheet Rev. 14.
What is the maximum input voltage rating for the NCP585DSAN12T1G?
The absolute maximum input voltage (VIN) for the NCP585DSAN12T1G is 6.5 V, as specified in the Maximum Ratings table on page 3 of the datasheet. Operation above this voltage risks permanent damage. The recommended operating input range is 1.4 V to 6.0 V, ensuring proper regulation and dropout performance for the 1.2 V output.
NCP585DSAN12T1G 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):
- 1.2V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.7V @ 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)
NCP585DSAN12T1G FAQ
1.How can I place an order for NCP585DSAN12T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP585DSAN12T1G 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 NCP585DSAN12T1G reliable?
The price and inventory of NCP585DSAN12T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP585DSAN12T1G is usually 5 days.
3.What payment methods are accepted for NCP585DSAN12T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP585DSAN12T1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP585DSAN12T1G?
NCP585DSAN12T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP585DSAN12T1G 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 NCP585DSAN12T1G?
For technical support, including NCP585DSAN12T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP585DSAN12T1G requirements.
6.How does Aetrix verify that NCP585DSAN12T1G is sourced from the original manufacturer or authorized distributors?
All NCP585DSAN12T1G 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 NCP585DSAN12T1G meets industry standards.
7.What is the process for return or replacement of NCP585DSAN12T1G?
All NCP585DSAN12T1G units undergo pre-shipment inspection (PSI). If there is an issue with NCP585DSAN12T1G, 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 NCP585DSAN12T1G part is unused and in its original packaging.
Return procedure for NCP585DSAN12T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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