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onsemi NCP730BMT280TBG
- Part No.:
- NCP730BMT280TBG
- Manufacturer:
- onsemi
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
NCP730BMT280TBG.pdf
- Description:
- IC REG LINEAR 2.8V 150MA 6WDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,958
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Product details
Overview
NCP730BMT280TBG from onsemi is a 2.8 V fixed-output, 150 mA CMOS low-dropout (LDO) regulator with Power Good (PG) output, 38 V max input voltage, 1.8 µA typical quiescent current, and 290 mV dropout at 150 mA - designed for battery-powered always-on systems such as remote controls and home automation sensors.
For engineers reviewing the NCP730BMT280TBG datasheet, pinout, applications, or equivalent options, key selection criteria include PG signal timing (120–600 µs delay), thermal shutdown threshold (165 °C), ±1% output accuracy over −40 °C to +125 °C, and compatibility with 1 µF ceramic output capacitors.
Technical Context
The NCP730BMT280TBG implements a precision bandgap reference (1.2 V) with internal error amplifier, UVLO (1.95 V nominal), and deglitched PG comparator monitoring 93% of VREF. Its CMOS pass transistor enables ultra-low IQ while maintaining fast load transient response (<600 µs recovery) and stable operation across 2.7–38 V input range.
Version B integrates a dedicated open-drain PG output (Pin 5 in WDFN-6) that asserts high after power-up delay (320 µs typ.) when VOUT reaches 93% of nominal and remains high until VOUT drops below 90% - enabling reliable microcontroller reset sequencing and system-level power monitoring.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.8 V ±1% over −40 °C to +125 °C - ensures stable MCU core supply under wide temperature and load variation. |
| Max Input Voltage | 38 V - supports direct connection to 24 V industrial rails or 36 V battery packs without external pre-regulation. |
| Quiescent Current | 1.8 µA typ. - enables >10-year battery life in always-on IoT sensors with 200 mAh coin cells. |
| Dropout Voltage | 290 mV typ. at 150 mA - maintains regulation down to VIN = 3.09 V, critical for deep-discharge battery operation. |
| Power Good Threshold | 93% of VOUT (2.604 V) with 2 µs deglitch and 320 µs delay - provides clean, noise-immune reset assertion for microcontrollers. |
| Thermal Shutdown | 165 °C with 20 °C hysteresis - protects against sustained overload in sealed enclosures without requiring external thermal management. |
| Capacitor Stability | Stable with ≥1 µF X7R/X5R ceramic COUT - eliminates need for large tantalum or electrolytic capacitors, reducing board area and cost. |
Pinout & Package
Package: WDFN-6 (2 mm × 2 mm, 0.65 mm pitch, exposed pad). Pinout validated per onsemi datasheet Rev. 7, pages 3 and 5.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 OUT | Regulated output | Delivers 2.8 V @ up to 150 mA; requires local 1 µF ceramic capacitor to GND for stability. |
| 2 NC/ADJ | No-connect (fixed version) | Not internally connected; tie to GND plane for improved thermal dissipation and EMI reduction. |
| 3 GND | Ground reference | Main return path for load and quiescent current; must connect exposed pad (EP) directly to PCB ground plane. |
| 4 EN | Enable control | Active-high logic input (0.9 V threshold); floating or tied to IN enables device; 300 nA internal pull-up eliminates external resistor. |
| 5 NC/PG | Power Good indicator | Open-drain output asserting high when VOUT ≥ 2.604 V; requires external 100 kΩ pull-up to VOUT or system rail. |
| 6 IN | Input supply | Accepts 2.7–38 V; requires local 1 µF ceramic capacitor to GND to suppress high-frequency noise and support load transients. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 1.8 µA typ. enables multi-year operation from primary lithium batteries in wireless sensor nodes. |
| Integrated Power Good (PG) | Dedicated open-drain output with programmable delay (320 µs typ.) and hysteresis (2%) simplifies power sequencing in multi-rail systems. |
| Wide input voltage range | 2.7–38 V accommodates 3.3 V logic rails, 12 V automotive, and 24 V industrial supplies without external components. |
| Soft-start circuit | Internal ramp limits inrush current during power-up, preventing input rail collapse and avoiding false resets in host systems. |
| Robust protection suite | Includes over-current limit (280 mA typ.), thermal shutdown (165 °C), and UVLO (1.95 V) - eliminates need for external fault management circuitry. |
Applications
| Battery-Powered Remote Controls | Home Automation Sensors |
|---|---|
Use Scenario: Sub-GHz RF remote controlling HVAC, lighting, or security systems with coin-cell or AA battery power. IC Role / Device Role / Timing Role: Primary 2.8 V LDO supplying RF transceiver and microcontroller; PG signal triggers MCU wake-up only after stable rail. Use Value: 1.8 µA IQ extends battery life beyond 5 years; 38 V input tolerance allows direct use with 36 V Li-ion packs in premium remotes. | Use Scenario: Wireless temperature/humidity/motion sensors deployed in smart thermostats or door/window contacts. IC Role / Device Role / Timing Role: Always-on 2.8 V regulator powering ultra-low-power MCU and BLE radio; PG confirms rail readiness before transmission. Use Value: Stable ±1% output ensures accurate ADC reference; 1 µF ceramic capacitor compatibility reduces BOM count and PCB footprint. |
| Industrial Metering Modules | White Goods Control Boards |
Use Scenario: Electricity/water/gas meters operating from 24 V DC auxiliary supply in harsh environments. IC Role / Device Role / Timing Role: Secondary 2.8 V rail for metrology ASIC and real-time clock; PG output synchronizes firmware initialization with power stabilization. Use Value: 165 °C thermal shutdown prevents failure in sealed meter enclosures; 38 V input withstands 24 V supply surges per IEC 61000-4-5. | Use Scenario: Control boards in refrigerators, washing machines, and dishwashers with variable 12–24 V DC bus voltages. IC Role / Device Role / Timing Role: Fixed 2.8 V supply for display driver, touch controller, and system MCU; PG signal gates display backlight enable. Use Value: 290 mV dropout ensures regulation even during brown-out events on 12 V bus; WDFN-6 package enables compact layout near noisy motor drivers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1703T-2802E/MB | 300 mA output, 2 µA IQ, no PG output, 16 V max input | Lacks power sequencing capability; unsuitable for systems requiring reset coordination | Select only if higher current and absence of PG are acceptable trade-offs |
| TLD1124-11ES | 250 mA output, 2.5 µA IQ, integrated watchdog timer, 40 V max input | Includes watchdog but no dedicated PG pin; timing behavior differs significantly | Prefer when system-level supervision is needed over precise rail monitoring |
Compared with MCP1703T-2802E/MB and TLD1124-11ES, the NCP730BMT280TBG uniquely combines 38 V input tolerance, true PG signaling with configurable delay, and sub-2 µA quiescent current - making it optimal for battery-critical, multi-rail embedded systems where rail sequencing and longevity are non-negotiable.
Availability
NCP730BMT280TBG is available at Aetrix Electronics and suitable for battery-powered remote controls, home automation sensors, and industrial metering modules requiring stable component supply with guaranteed long-term availability and full traceability.
Supply support for NCP730BMT280TBG 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 is a global semiconductor supplier delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The NCP730 series is engineered for ultra-low-power, high-input-voltage LDO applications - specifically targeting always-on battery devices and industrial systems needing robust rail monitoring via integrated Power Good functionality.
FAQ
What is the maximum input voltage rating for the NCP730BMT280TBG?
The NCP730BMT280TBG supports a maximum input voltage of 38 V, verified per onsemi datasheet Rev. 7 Section 4 (Maximum Ratings). This allows direct operation from 24 V industrial buses or 36 V Li-ion battery packs without external pre-regulation. Operation above 38 V risks permanent damage, and the absolute maximum is strictly limited to 40 V under transient conditions.
Does the NCP730BMT280TBG require an external pull-up resistor on the PG pin?
Yes, the NCP730BMT280TBG PG pin (Pin 5 in WDFN-6) is open-drain and requires an external pull-up resistor - typically 100 kΩ to VOUT or the system supply rail - to generate a valid logic-high signal. The datasheet Figure 3 and Section 5 confirm this configuration; omitting the pull-up results in undefined or floating PG state during normal operation.
What is the typical quiescent current of the NCP730BMT280TBG at room temperature?
The NCP730BMT280TBG exhibits 1.8 µA typical quiescent current at TJ = 25 °C and IOUT = 0 mA, as specified in the Electrical Characteristics table (Section 4, "Quiescent Current (version B)" row). This value increases to 3.0 µA maximum over full temperature and input voltage range, enabling multi-year battery life in always-on applications.
Can the NCP730BMT280TBG operate with a 1 µF ceramic output capacitor?
Yes, the NCP730BMT280TBG is explicitly characterized and guaranteed stable with a minimum 1 µF X7R or X5R ceramic output capacitor, per datasheet Section 14 ("Output Capacitor Selection"). No ESR requirement exists, and larger values (up to 100 µF) improve PSRR and load transient response without compromising stability.
What is the Power Good (PG) assertion threshold voltage for the NCP730BMT280TBG?
The NCP730BMT280TBG asserts PG high when VOUT reaches 93% of its nominal 2.8 V output - i.e., 2.604 V - with 2% hysteresis (90–96% range) and a typical 320 µs delay after startup, as defined in Section 4's "PG Threshold" parameter. This ensures reliable microcontroller reset release only after rail stabilization.
NCP730BMT280TBG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 6-WDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 38V
- Voltage - Output (Min/Fixed):
- 2.8V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.48V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 3 µA
- Current - Supply (Max):
- 450 µA
- PSRR:
- 80dB ~ 48dB (10Hz ~ 1MHz)
- Control Features:
- Enable, Power Good, Soft Start
- Protection Features:
- Over Current, Over Temperature, Under Voltage Lockout (UVLO)
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-WDFN (2x2)
NCP730BMT280TBG FAQ
1.How can I place an order for NCP730BMT280TBG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP730BMT280TBG 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 NCP730BMT280TBG reliable?
The price and inventory of NCP730BMT280TBG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP730BMT280TBG is usually 5 days.
3.What payment methods are accepted for NCP730BMT280TBG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP730BMT280TBG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP730BMT280TBG?
NCP730BMT280TBG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP730BMT280TBG 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 NCP730BMT280TBG?
For technical support, including NCP730BMT280TBG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP730BMT280TBG requirements.
6.How does Aetrix verify that NCP730BMT280TBG is sourced from the original manufacturer or authorized distributors?
All NCP730BMT280TBG 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 NCP730BMT280TBG meets industry standards.
7.What is the process for return or replacement of NCP730BMT280TBG?
All NCP730BMT280TBG units undergo pre-shipment inspection (PSI). If there is an issue with NCP730BMT280TBG, 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 NCP730BMT280TBG part is unused and in its original packaging.
Return procedure for NCP730BMT280TBG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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