My Inquiry
My Account
onsemi NCP3063BMNTXG
- Part No.:
- NCP3063BMNTXG
- Manufacturer:
- onsemi
- Package:
- 8-VDFN Exposed Pad
- Datasheet:
-
NCP3063BMNTXG.pdf
- Description:
- IC REG BUCK BOOST ADJ 1.5A 8DFN
- Quantity:
- Payment:
- Shipping:
Inventory:15,675
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
NCP3063BMNTXG from onsemi is a monolithic step-up/down/inverting switching regulator IC featuring an integrated 1.5 A Darlington output switch, 150 kHz oscillator, 1.25 V ±1.5% precision reference, cycle-by-cycle current limiting, and thermal shutdown with 10°C hysteresis. It operates from 0–40 V input and supports buck, boost, and inverting topologies in compact DFN-8 packaging - ideal for space-constrained battery chargers and LED lighting drivers.
For engineers reviewing the NCP3063BMNTXG datasheet, pinout, applications, or equivalent options, key selection criteria include its 1.5 A switch current rating, 1.25 V reference accuracy, thermal shutdown threshold (160°C), timing capacitor-based frequency control, and compatibility with external MOSFETs for higher-power boost/buck designs.
Technical Context
The NCP3063BMNTXG implements a hysteretic, gated-oscillator DC-DC control architecture that eliminates need for loop compensation. Its internal comparator compares feedback voltage against a 1.25 V reference, while the oscillator's timing capacitor (Pin 3) sets frequency via charge/discharge current ratio (6:1 typical), enabling stable operation across input ranges from 0 to 40 V.
Current limiting is enforced via peak-sense comparator monitoring voltage across an external sense resistor (RSC), triggering switch turn-off when VIPK exceeds 200 mV. Thermal protection disables the switch at 160°C junction temperature and re-enables it at ≤150°C, providing robust fault recovery without external circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 0 V to +40 V - supports wide-input industrial and automotive supply rails without pre-regulation. |
| Switch Current Rating | 1.5 A continuous - enables direct drive of medium-power converters without external transistors in many applications. |
| Oscillator Frequency | 150 kHz typical (110–190 kHz range) - balances EMI, efficiency, and component size for cost-sensitive designs. |
| Reference Voltage | 1.25 V ±1.5% - ensures tight output regulation stability over temperature and line variations. |
| Current Sense Threshold | 200 mV ±35 mV - sets precise overcurrent limit via external RSC, enabling predictable short-circuit protection. |
| Thermal Shutdown | 160°C activation with 10°C hysteresis - prevents permanent damage during sustained overload or poor heatsinking. |
| Package Type | DFN-8 (4 mm × 4 mm, 0.8 mm pitch) with exposed pad - provides low thermal resistance (RJA = 80°C/W) for high-power density layouts. |
Pinout & Package
Package: DFN-8 (Case 488AF), 4 mm × 4 mm body, 0.8 mm pitch, exposed thermal pad (must be connected to GND).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - Switch Collector (SWC) | Darlington switch collector terminal | Connects to inductor/diode node in buck/boost; handles full switched current up to 1.5 A. |
| 2 - Switch Emitter (SWE) | Darlington switch emitter terminal | Return path for switch current; used as gate-drive reference in external transistor configurations. |
| 3 - Timing Capacitor (TCAP) | Oscillator timing input | Controls switching frequency via external capacitor; voltage swing limited to −0.2 V to +1.4 V. |
| 4 - GND | Ground reference for all internal circuits | Primary return for power, logic, and thermal pad; must be low-impedance connection for stability. |
| 5 - Comparator Inverting Input (COMP) | Feedback voltage input | Compares divided output voltage against 1.25 V reference to regulate output level. |
| 6 - VCC | Supply voltage input | Power source for internal circuitry; accepts 0–40 V, with supply current ≤7 mA under load. |
| 7 - Ipk Sense (IPK) | Peak current sense input | Monitors voltage drop across external sense resistor to enforce cycle-by-cycle current limiting. |
| 8 - N.C. | No-connect terminal | Internally unconnected; must remain floating - no external connection permitted. |
Key Features
| Feature | Design Value |
|---|---|
| Step-up/down/inverting topology support | Single IC replaces multiple converter types - reduces BOM count and design time for multi-rail systems. |
| Internal 1.5 A Darlington switch | Eliminates need for external power transistor in ≤1.5 A applications, simplifying layout and lowering cost. |
| 150 kHz fixed-frequency oscillator | Enables predictable EMI filtering and consistent inductor sizing across production units. |
| 1.25 V ±1.5% precision reference | Ensures ±1.5% output voltage accuracy without trimming, critical for regulated LED or sensor supplies. |
| Thermal shutdown with hysteresis | Prevents thermal runaway by disabling switch at 160°C and re-enabling only after cooling to ≤150°C. |
| Pb-free DFN-8 package | Meets RoHS requirements and supports automated reflow assembly with enhanced thermal performance. |
Applications
| Battery Chargers | High-Power LED Drivers |
|---|---|
|
Use Scenario: Constant-current charging of 12 V lead-acid or multi-cell Li-ion batteries from variable 5–24 V sources. IC Role / Device Role / Timing Role: Regulates output voltage/current using COMP feedback and IPK sensing to maintain safe charge profiles. Use Value: Enables single-chip charger design with programmable current limit (via RSC) and thermal foldback protection. |
Use Scenario: Driving strings of white LEDs requiring 3.3–24 V at up to 800 mA in automotive interior lighting or signage. IC Role / Device Role / Timing Role: Acts as constant-current boost controller with adjustable output via R1/R2 divider on COMP pin. Use Value: Delivers >85% efficiency at 350 mA (boost mode) and supports PWM dimming via duty-cycle control of SWE pin. |
| Industrial DC Power Supplies | Inverting Voltage Rails |
|
Use Scenario: Generating isolated or non-isolated 3.3 V, 5 V, or 12 V rails from unregulated 9–36 V industrial inputs. IC Role / Device Role / Timing Role: Functions as primary buck regulator with external Schottky diode and low-ESR capacitors. Use Value: Achieves >73% efficiency at 800 mA (buck demo) with minimal external components and no compensation network required. |
Use Scenario: Creating negative supply rails (e.g., −12 V) from positive 5 V sources in analog signal conditioning or op-amp biasing. IC Role / Device Role / Timing Role: Configured in voltage-inverting topology with L501/D501/C505 forming energy-transfer network. Use Value: Provides regulated −12 V @ 100 mA with <1.6 mV load regulation and supports low-noise analog circuitry. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar switching regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NCP3063DR2G | SOIC-8 package (RJA = 180°C/W), same electrical specs, no exposed thermal pad | Preferred for prototyping or low-power applications where thermal dissipation is less critical | Select when board space allows larger footprint and thermal management uses PCB copper rather than pad soldering. |
| NCV3063MNTXG | Automotive-grade variant (−40°C to +125°C operating range), identical DFN-8 package and pinout | Required for AEC-Q100-compliant automotive modules and extended-temperature industrial controls | Choose for automotive battery systems or harsh-environment equipment where extended temperature qualification is mandatory. |
Compared with NCP3063BMNTXG, the NCP3063DR2G trades thermal performance for ease of hand-soldering and test, while the NCV3063MNTXG adds automotive qualification without altering footprint or functionality - making both viable alternatives depending on thermal, manufacturability, or compliance needs.
Availability
NCP3063BMNTXG is available at Aetrix Electronics and suitable for battery chargers, high-power LED lighting, and industrial DC power supplies requiring stable component supply, Pb-free compliance, and long-term production continuity.
Supply support for NCP3063BMNTXG 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, sensors, and connectivity solutions for automotive, industrial, and consumer markets.
The NCP3063 series was designed as a higher-frequency, feature-enhanced upgrade to MC34063A/33063A - targeting cost-sensitive, medium-power DC-DC conversion in space-constrained applications.
FAQ
What is the maximum input voltage supported by the NCP3063BMNTXG?
The NCP3063BMNTXG supports an absolute maximum input voltage of +40 V on the VCC pin (Pin 6) and Darlington switch collector (Pin 1). Operation above this rating risks permanent device damage. The recommended operating range remains 0–40 V, with stable regulation demonstrated from 5 V to 36 V in published buck/boost demos.
Can the NCP3063BMNTXG be used in inverting voltage applications?
Yes, the NCP3063BMNTXG is explicitly designed for inverting topologies. Figure 22 in the datasheet shows a validated −12 V @ 100 mA inverting converter using NCP3063BMNTXG with 22 µH inductor, 1N5819 diode, and 470 µF/35 V output capacitor - achieving 49.8% efficiency and <300 mVpp ripple.
How does the thermal shutdown feature work in the NCP3063BMNTXG?
The NCP3063BMNTXG integrates a thermal shutdown circuit that disables the internal Darlington switch when junction temperature reaches 160°C. It remains off until temperature falls to ≤150°C due to 10°C hysteresis - preventing oscillation and enabling safe cooldown before resuming operation. This protects against sustained overload or inadequate heatsinking.
What is the purpose of the exposed pad on the NCP3063BMNTXG DFN-8 package?
The exposed pad on the NCP3063BMNTXG must be soldered to a GND plane to serve two functions: (1) provide low-thermal-resistance path (RJA = 80°C/W) for heat dissipation, and (2) stabilize internal ground references. Leaving it unconnected degrades thermal performance and may cause regulation instability or premature thermal shutdown.
Is the NCP3063BMNTXG pin-compatible with the legacy MC34063A?
No, the NCP3063BMNTXG is not pin-compatible with MC34063A. While functionally similar, NCP3063BMNTXG uses an 8-pin DFN layout with different pin assignments (e.g., Pin 3 = TCAP, Pin 4 = GND, Pin 8 = N.C.), whereas MC34063A uses 8-pin DIP/SOIC with Pin 3 = CT, Pin 4 = GND, Pin 5 = VOUT. Board redesign is required for migration.
NCP3063BMNTXG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 8-VDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up, Step-Down
- Output Configuration:
- Positive or Negative
- Topology:
- Buck, Boost
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3V
- Voltage - Input (Max):
- 40V
- Voltage - Output (Min/Fixed):
- 1.25V
- Voltage - Output (Max):
- 40V (Switch)
- Current - Output:
- 1.5A (Switch)
- Frequency - Switching:
- 150kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-DFN (4x4)
NCP3063BMNTXG FAQ
1.How can I place an order for NCP3063BMNTXG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP3063BMNTXG 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 NCP3063BMNTXG reliable?
The price and inventory of NCP3063BMNTXG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP3063BMNTXG is usually 5 days.
3.What payment methods are accepted for NCP3063BMNTXG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP3063BMNTXG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP3063BMNTXG?
NCP3063BMNTXG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP3063BMNTXG 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 NCP3063BMNTXG?
For technical support, including NCP3063BMNTXG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP3063BMNTXG requirements.
6.How does Aetrix verify that NCP3063BMNTXG is sourced from the original manufacturer or authorized distributors?
All NCP3063BMNTXG 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 NCP3063BMNTXG meets industry standards.
7.What is the process for return or replacement of NCP3063BMNTXG?
All NCP3063BMNTXG units undergo pre-shipment inspection (PSI). If there is an issue with NCP3063BMNTXG, 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 NCP3063BMNTXG part is unused and in its original packaging.
Return procedure for NCP3063BMNTXG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
NCP3063BMNTXG Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
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…
