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onsemi NCP585HSN12T1G
- Part No.:
- NCP585HSN12T1G
- Manufacturer:
- onsemi
- Package:
- SC-74A, SOT-753
- Datasheet:
-
NCP585HSN12T1G.pdf
- Description:
- IC REG LINEAR 1.2V 300MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,130
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Product details
Overview
NCP585HSN12T1G from onsemi is a tri-mode 300 mA CMOS low-dropout regulator with enable, delivering fixed 1.2 V output in SOT-23-5 package. It supports Chip Enable (CE), Fast Transient (FT), and Low Power (LP) modes via ECO pin control, features 310 mV dropout at 300 mA (FT mode), ±2% output accuracy, and 70 dB PSRR at 1 kHz - optimized for portable battery-powered systems requiring ultra-low quiescent current and high ripple rejection.
For engineers reviewing the NCP585HSN12T1G datasheet, pinout, applications, or equivalent options, this page provides verified technical context, mode-specific regulation performance, thermal stability data, real-world transient response behavior, and validated alternative options for portable power management designs.
Technical Context
The NCP585HSN12T1G implements a CMOS-based LDO architecture with three configurable operating modes: CE (chip enable), FT (fast transient), and LP (low power), selected by driving the ECO pin high (Vin) or low (GND). Its internal reference and error amplifier deliver precise 1.2 V regulation across −40°C to +85°C ambient, with 100 ppm/°C temperature coefficient and fold-back current limiting.
Mode switching alters key performance parameters: FT mode enables 40 mV load regulation and 80 µA quiescent current (Vout < 1.8 V), while LP mode reduces Iq to 3.5 µA (Vout < 1.6 V) at the cost of relaxed 15 mV load regulation and 3% output accuracy. Input voltage range is 1.4–6.0 V, supporting single-cell Li-ion and multi-cell alkaline/battery sources.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.2 V ±2% (FT mode), ±3% (LP mode) - ensures stable core voltage for low-power microcontrollers and sensors. |
| Max Output Current | 300 mA continuous - sufficient for powering SoCs, RF transceivers, or display drivers in handheld devices. |
| Dropout Voltage | 310 mV typical at 300 mA (FT mode, Vout = 1.2 V) - enables operation with Vin as low as 1.51 V, extending battery runtime. |
| Quiescent Current | 80 µA (FT mode, Vout < 1.8 V); 3.5 µA (LP mode, Vout < 1.6 V) - critical for standby power budgeting in always-on IoT nodes. |
| PSRR | 70 dB at 1 kHz - suppresses switching noise from upstream DC-DC converters feeding the LDO input. |
| Line Regulation | 0.01%/V (FT mode) - maintains tight output stability despite battery voltage sag during discharge. |
| Load Regulation | 40 mV (FT mode, 1–300 mA) - minimizes voltage droop during processor wake-up bursts. |
Pinout & Package
SOT-23-5 package (Case 1212), 2.8 mm × 2.5 mm footprint, 1.0–1.3 mm height, Pb-free, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: Vin | Power input | Accepts 1.4–6.0 V supply; requires 1.0 µF ceramic decoupling capacitor to GND per layout guidelines. |
| 2: GND | Ground reference | Power return path; must be low-impedance connection to minimize noise coupling into regulation loop. |
| 3: CE | Chip enable input | Active-high logic control; pulls Iq to 0.1 µA in shutdown when driven low. |
| 4: ECO | Mode selection | Drives FT mode (ECO = Vin) or LP mode (ECO = GND); determines trade-off between speed and quiescent current. |
| 5: Vout | Regulated output | Delivers 1.2 V ±2%; requires 1.0 µF low-ESR output capacitor placed adjacent to pin per stability requirements. |
Key Features
| Feature | Design Value |
|---|---|
| Tri-mode operation | Hardware-selectable CE, FT, and LP modes via ECO pin - enables dynamic power-state adaptation without firmware intervention. |
| Ultra-low Iq in LP mode | 3.5 µA at Vout < 1.6 V - extends shelf life and operational time in battery-backed memory or real-time clock circuits. |
| Fast transient response | Stabilizes within microseconds after 100 mA load step (Fig. 29) - prevents brownout during MCU core wake-up events. |
| Fold-back current protection | Limiting threshold ~50 mA at Vout = 0 V - safeguards against short-circuit faults without thermal runaway. |
| Low temperature drift | 100 ppm/°C output voltage drift - ensures consistent 1.2 V supply across industrial temperature range. |
Applications
| Portable Medical Sensors | Wearable Fitness Trackers |
|---|---|
Use Scenario: Continuous glucose monitor (CGM) with Bluetooth LE radio and analog front-end. IC Role / Device Role / Timing Role: Primary 1.2 V supply for ultra-low-power ARM Cortex-M0+ MCU and ADC reference. Use Value: LP mode delivers 3.5 µA Iq to extend 7-day battery life; FT mode engages during sensor sampling bursts to maintain <40 mV load regulation. |
Use Scenario: Optical heart-rate sensor with motion compensation and BLE connectivity. IC Role / Device Role / Timing Role: Regulated 1.2 V rail for photodiode amplifier chain and digital signal processor. Use Value: 70 dB PSRR at 1 kHz rejects noise from switching charger IC; 310 mV dropout allows operation down to 1.51 V battery voltage. |
| Handheld Test Meters | Industrial IoT Edge Nodes |
Use Scenario: Battery-powered multimeter with LCD display and precision measurement circuitry. IC Role / Device Role / Timing Role: Stable 1.2 V reference source for 16-bit SAR ADC and display driver IC. Use Value: ±2% output accuracy and 100 ppm/°C drift ensure measurement repeatability across temperature; CE pin enables full system shutdown. |
Use Scenario: LoRaWAN node with environmental sensors and microcontroller in remote deployment. IC Role / Device Role / Timing Role: Main power regulator for MCU, RF transceiver, and sensor interface logic. Use Value: Tri-mode flexibility allows LP mode during sleep (3.5 µA), FT mode during transmission (80 µA, fast recovery), and CE-controlled deep sleep (0.1 µA). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-1202E/TT | Single-mode (fixed LP), 250 mA max, 6 µA Iq, no ECO pin or FT mode | Lacks dynamic mode switching; suitable only for static ultra-low-power use cases | Select when design requires minimal BOM count and no transient performance demands |
| TLS850B2TE/V33 | Automotive-grade, 500 mA, integrated watchdog, 35 µA Iq, 1.2 V output | Qualified to AEC-Q100 Grade 1, includes safety features not present in NCP585HSN12T1G | Select for automotive body electronics where functional safety compliance is mandatory |
Compared with MCP1700T-1202E/TT and TLS850B2TE/V33, the NCP585HSN12T1G uniquely balances ultra-low Iq (3.5 µA), fast transient response (FT mode), and hardware-configurable operation - making it optimal for consumer portable devices needing adaptive power states without software overhead.
Availability
NCP585HSN12T1G is available at Aetrix Electronics and suitable for portable medical sensors, wearable fitness trackers, handheld test meters, industrial IoT edge nodes, and battery-powered instrumentation requiring stable component supply and long-term lifecycle support.
Supply support for NCP585HSN12T1G 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, sensor, and connectivity solutions for automotive, industrial, cloud, and consumer markets.
The NCP585HSN12T1G belongs to the NCP585 series of tri-mode CMOS LDO regulators, designed specifically for portable battery-powered applications demanding precise voltage accuracy, ultra-low quiescent current, and high ripple rejection under dynamic load conditions.
FAQ
What is the maximum input voltage rating for the NCP585HSN12T1G?
The NCP585HSN12T1G has an absolute maximum input voltage (Vin) rating of 6.5 V. The recommended operating input voltage range is 1.4 V to 6.0 V, as specified in the Electrical Characteristics table. Exceeding 6.5 V risks permanent damage to the device, and operation below 1.4 V may prevent proper regulation at 1.2 V output.
How does the ECO pin affect the NCP585HSN12T1G's performance?
The ECO pin selects between Fast Transient (ECO = Vin) and Low Power (ECO = GND) modes. In FT mode, the NCP585HSN12T1G achieves 40 mV load regulation and 80 µA quiescent current; in LP mode, it delivers 3.5 µA Iq but relaxes load regulation to 15 mV and output accuracy to ±3%. This hardware-selectable trade-off enables adaptive power optimization.
What is the dropout voltage of the NCP585HSN12T1G at 300 mA output current?
The dropout voltage of the NCP585HSN12T1G is 310 mV typical at 300 mA output current in Fast Transient mode with 1.2 V output. This value is confirmed in the Electrical Characteristics table under "Dropout Voltage" for Vout = 1.2 V and ECO = H. At 25°C and Vin = Vout + 1.0 V, the measured typical dropout remains consistent across temperature and load variations shown in Figure 20.
Does the NCP585HSN12T1G require external capacitors, and what values are recommended?
Yes, the NCP585HSN12T1G requires both input and output capacitors. A 1.0 µF ceramic capacitor is recommended between Vin and GND; a 1.0 µF low-ESR capacitor is required on Vout. Layout guidelines specify placing the output capacitor adjacent to the Vout pin with short traces to ensure stability across all load currents and ECO modes, as validated in Figures 32–35.
Is the NCP585HSN12T1G pin-compatible with other variants in the NCP585 family?
The NCP585HSN12T1G uses the SOT-23-5 package and shares identical pinout (Vin, GND, CE, ECO, Vout) with all other SOT-23-5 variants in the NCP585 series, including NCP585HSN09T1G, NCP585HSN18T1G, and NCP585LSN12T1G. Pin compatibility is confirmed in the Pin Function Description table on page 2 and ordering information on page 11 of the datasheet.
NCP585HSN12T1G 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):
- 1.2V
- 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:
- SOT-23-5
NCP585HSN12T1G FAQ
1.How can I place an order for NCP585HSN12T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP585HSN12T1G 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 NCP585HSN12T1G reliable?
The price and inventory of NCP585HSN12T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP585HSN12T1G is usually 5 days.
3.What payment methods are accepted for NCP585HSN12T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP585HSN12T1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP585HSN12T1G?
NCP585HSN12T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP585HSN12T1G 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 NCP585HSN12T1G?
For technical support, including NCP585HSN12T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP585HSN12T1G requirements.
6.How does Aetrix verify that NCP585HSN12T1G is sourced from the original manufacturer or authorized distributors?
All NCP585HSN12T1G 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 NCP585HSN12T1G meets industry standards.
7.What is the process for return or replacement of NCP585HSN12T1G?
All NCP585HSN12T1G units undergo pre-shipment inspection (PSI). If there is an issue with NCP585HSN12T1G, 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 NCP585HSN12T1G part is unused and in its original packaging.
Return procedure for NCP585HSN12T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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