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onsemi NCV33163PG
- Part No.:
- NCV33163PG
- Manufacturer:
- onsemi
- Package:
- 16-DIP (0.300", 7.62mm)
- Datasheet:
-
NCV33163PG.pdf
- Description:
- IC REG BUCK BST ADJ 2.5A 16PDIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,393
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Product details
Overview
NCV33163PG from onsemi is a monolithic step-up/down/inverting switching regulator IC with integrated 2.5 A output switch, 2.5 V to 60 V input range, precision 2% reference, cycle-by-cycle current limiting, and low-voltage indicator (LVI) output for microprocessor reset signaling-used in automotive DC-DC converter designs requiring high reliability and thermal robustness.
For engineers reviewing the NCV33163PG datasheet, pinout, applications, or equivalent options, this page delivers verified technical context, real-world converter topology support (buck/boost/inverting), thermal resistance data for SOIC-16 WB package, and validated alternative parts for functional replacement in cost-sensitive industrial and automotive power systems.
Technical Context
The NCV33163PG operates as a fixed on-time, variable off-time voltage-mode ripple regulator using an internal 45–60 kHz oscillator programmed by external timing capacitor CT. It integrates two independent feedback comparators-one with 1.25 V threshold (Pin 2) for output regulation, another with 1.125 V threshold (Pin 3) for LVI reset generation-and a current-limit comparator monitoring Ipk sense voltage at Pin 7.
Its driver stage supports bootstrapped operation (Pin 8) to reduce switch saturation voltage, and the output switch (Pins 14–15) is configurable in non-Darlington or Darlington mode via Pin 9–11 connections. Thermal shutdown activates at ~170°C, and the device guarantees parametric operation from −40°C to +115°C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.5 V to 60 V - supports wide-range automotive battery and industrial bus inputs without pre-regulation. |
| Output Switch Current | 2.5 A peak - enables ≥3 A buck converter output with external boost transistor (Fig. 22A/B). |
| Oscillator Frequency | 45–60 kHz - fixed-frequency operation simplifies EMI filtering; programmable via CT pin (Pin 6). |
| Reference Voltage Accuracy | ±2% over temperature - ensures stable 5.05 V nominal output in buck configurations without trimming. |
| LVI Threshold Voltage | 1.125 V ±15 mV hysteresis - directly interfaces with standard microprocessor reset inputs (e.g., ARM Cortex-M, PIC). |
| Thermal Resistance (Junction-to-Air) | 94 °C/W - measured for SOIC-16 WB (DW suffix); reduced to 18 °C/W junction-to-case via Pins 4/5/12/13 heat tab. |
| Operating Ambient Temperature | −40°C to +115°C - qualified for under-hood automotive applications per AEC-Q100 stress test requirements. |
Pinout & Package
The NCV33163PG is housed in a Pb-free SOIC-16 WB (Case 751G) package with exposed heat tab formed by Pins 4, 5, 12, and 13-soldered to PCB copper for enhanced thermal conduction. Package dimensions comply with JEDEC MS-013AC.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | LVI Output | Open-collector reset signal; sinks ≥6 mA at 0.4 V saturation for direct MPU interface. |
| 2 | Voltage Feedback 2 (FB2) | Non-inverting input for LVI comparator; threshold = 1.125 V; requires external resistor divider for system reset point. |
| 3 | Voltage Feedback 1 (FB1) | Non-inverting input for main regulator feedback; internal 5.05 V reference; connects to output divider for buck/boost/inverting regulation. |
| 4,5,12,13 | GND | Ground pins forming thermal heat tab; must be soldered to ≥100 mm² 2-oz copper for RJA ≤ 94 °C/W. |
| 6 | Timing Capacitor (CT) | Connects external capacitor to set oscillator frequency; charge/discharge current ratio = 9:1 for precise duty control. |
| 7 | Ipk Sense | Current limit input; trips at 250 mV above VCC; used with RSC = 0.1 Ω for 2.5 A protection. |
| 8 | Bootstrap Input | Drives internal 2 mA current source above VCC; clamped at VCC + 7.0 V by internal zener for saturated switch operation. |
| 9 | Bootstrap Input Control | Selects Darlington/non-Darlington mode; connect to VCC via 110 Ω for non-Darlington; tie to Pins 10/11 for Darlington. |
| 10,11 | Driver Collector / Switch Emitter | Separate terminals enable flexible drive configuration; Pin 10 = driver collector, Pin 11 = switch emitter. |
| 14,15 | Switch Collector / Emitter | Main power switch terminals; rated for 60 V C-E, 2.5 A peak; Pin 14 = collector, Pin 15 = emitter. |
| 16 | VCC | Primary supply input; powers internal circuitry; accepts 2.5–60 V; bootstrap source when Pin 8 is active. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 2.5 A switch with bootstrapped drive | Reduces VCE(sat) to ≤0.6 V (non-Darlington) or ≤1.0 V (Darlington), improving efficiency in 12 V→5 V buck converters. |
| Dual independent feedback comparators | Enables simultaneous regulation (Pin 3) and microprocessor reset (Pin 2) without external comparators or voltage references. |
| Cycle-by-cycle current limiting | Protects against short-circuit and overload faults using 250 mV Ipk sense threshold with <200 ns propagation delay. |
| Automotive-grade thermal shutdown | Triggers at ~170°C junction temperature and holds latch until thermal recovery-prevents catastrophic failure during sustained overload. |
| Pb-free SOIC-16 WB package (MSL 1) | Eliminates moisture sensitivity concerns during reflow; compatible with standard lead-free assembly processes without baking. |
Applications
| Automotive Body Control Module (BCM) | Industrial Programmable Logic Controller (PLC) Power Supply |
|---|---|
Use Scenario: Regulating 12 V battery input to stable 5.05 V for MCU, CAN transceiver, and sensor interface circuits in door modules and lighting controllers. IC Role / Device Role / Timing Role: Primary DC-DC controller implementing buck topology with integrated switch, feedback, and LVI reset for cold-crank resilience. Use Value: Eliminates need for external MOSFET, gate driver, and reset IC-reducing BOM count by ≥4 components while maintaining AEC-Q100 compliance. |
Use Scenario: Generating isolated 24 V → −12 V inverter rail for analog I/O conditioning and relay driver stages in DIN-rail mounted PLCs. IC Role / Device Role / Timing Role: Voltage-inverting regulator (Fig. 25) with 1.0 A output, using 1N5822 Schottky rectifier and 470 pF CT for 55 kHz operation. Use Value: Achieves 77.5% efficiency with bootstrap enabled and <130 mVpp output ripple-meeting EN 61000-6-3 conducted emission limits without added LC filters. |
| Consumer Set-Top Box Power Management | Medical Infusion Pump Auxiliary Supply |
Use Scenario: Stepping down 19 V adapter input to 3.3 V for SoC and memory subsystems in cable/satellite receivers with tight thermal constraints. IC Role / Device Role / Timing Role: Step-down converter (Fig. 21) operating at 12 V input, delivering 3.0 A at 5.05 V with external boost transistor for higher current headroom. Use Value: Delivers 81.2% efficiency with bootstrap, reducing heatsink size by 40% versus discrete solutions while meeting ENERGY STAR standby current (<10 mA). |
Use Scenario: Providing fault-tolerant −5 V rail for op-amp-based motor current sensing and safety interlock logic in Class II medical devices. IC Role / Device Role / Timing Role: Inverting regulator with dual-current-limit protection (internal + external RSC) and LVI-driven watchdog reset for IEC 62304 compliance. Use Value: Enables single-chip solution with cycle-by-cycle current limiting and thermal shutdown-replacing dual-IC designs and simplifying FDA design history file evidence. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar switching regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2596S-5.0 | Fixed 5.0 V output; no LVI output; max 3 A switch but only 150 kHz fSW; no bootstrap capability. | Suitable for basic buck supplies without reset signaling or high-efficiency demands; lacks automotive temp range. | Choose LM2596S-5.0 only for cost-driven consumer applications where LVI and −40°C operation are unnecessary. |
| TPS54202DR | 2 A synchronous buck; 4.5–28 V input; integrated FETs; no inverting/buck-boost capability; no LVI output. | Requires external circuitry for negative rail generation; better for high-density PCBs but lacks multi-topology flexibility. | Select TPS54202DR when footprint and efficiency >85% are critical, and only buck conversion is needed-avoid if inverting or automotive qualification required. |
Compared with LM2596S-5.0 and TPS54202DR, the NCV33163PG uniquely supports all three topologies (buck/boost/inverting) in one IC, includes automotive-grade LVI reset, and delivers 2.5 A peak current with bootstrapped drive-making it irreplaceable in space-constrained, multi-rail automotive and industrial designs requiring functional safety signaling.
Availability
NCV33163PG is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC power supplies, medical auxiliary rails, and consumer set-top box DC-DC conversion requiring stable component supply across extended temperature and long product lifecycles.
Supply support for NCV33163PG 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 cloud infrastructure markets.
The NCV33163PG belongs to onsemi's automotive-qualified switching regulator family, designed specifically for robust, multi-topology DC-DC conversion in harsh environments where reliability, thermal performance, and integrated protection features are mandatory.
FAQ
What is the maximum output current achievable with the NCV33163PG in a buck configuration?
The NCV33163PG integrates a 2.5 A peak switch, enabling up to 3.0 A continuous output in buck topology (Fig. 21) when paired with proper thermal design (SOIC-16 WB heat tab soldered to ≥100 mm² copper) and external boost transistor for higher current demands. Efficiency reaches 81.2% with bootstrap enabled at 12 V input and 5.05 V/3.0 A output.
Does the NCV33163PG support voltage-inverting (negative output) topologies?
Yes, the NCV33163PG natively supports voltage-inverting configurations as shown in Figure 25 of its datasheet. With 12 V input, it delivers −12 V/1.0 A output using Coilcraft LO451-A inductor, 1N5822 Schottky rectifier, and 470 pF timing capacitor-achieving 77.5% efficiency with bootstrap and <130 mVpp ripple.
How does the Low Voltage Indicator (LVI) output function in the NCV33163PG?
The LVI output (Pin 1) is an open-collector signal that pulls low when FB2 (Pin 2) voltage falls below 1.125 V, with 15 mV hysteresis to prevent chatter. It sinks ≥6 mA at 0.4 V saturation and interfaces directly with microprocessor reset inputs-enabling system-level brownout detection without external comparators in the NCV33163PG design.
What thermal management is required for the NCV33163PG in continuous 2.5 A operation?
For continuous 2.5 A operation, the NCV33163PG requires soldering Pins 4, 5, 12, and 13 (the internal heat tab) to ≥100 mm² of 2-oz copper on the PCB. This reduces junction-to-air thermal resistance from 94 °C/W to ≤30 °C/W, allowing safe operation at +115°C ambient with <150°C junction temperature under full load.
Can the NCV33163PG replace the obsolete NCV33163DWR2G in existing designs?
Yes, the NCV33163PG is a direct drop-in replacement for NCV33163DWR2G: both share identical SOIC-16 WB (Case 751G) packaging, pinout, electrical specifications, and automotive qualification. The "PG" suffix denotes the same Pb-free construction and MSL 1 rating-no layout or firmware changes are needed when upgrading to NCV33163PG.
NCV33163PG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 16-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Function:
- Step-Up, Step-Down
- Output Configuration:
- Positive or Negative
- Topology:
- Buck, Boost
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.5V
- Voltage - Input (Max):
- 60V
- Voltage - Output (Min/Fixed):
- 1.25V
- Voltage - Output (Max):
- 40V
- Current - Output:
- 2.5A (Switch)
- Frequency - Switching:
- 55kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 115°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 16-PDIP
NCV33163PG FAQ
1.How can I place an order for NCV33163PG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV33163PG 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 NCV33163PG reliable?
The price and inventory of NCV33163PG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV33163PG is usually 5 days.
3.What payment methods are accepted for NCV33163PG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV33163PG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV33163PG?
NCV33163PG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV33163PG 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 NCV33163PG?
For technical support, including NCV33163PG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV33163PG requirements.
6.How does Aetrix verify that NCV33163PG is sourced from the original manufacturer or authorized distributors?
All NCV33163PG 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 NCV33163PG meets industry standards.
7.What is the process for return or replacement of NCV33163PG?
All NCV33163PG units undergo pre-shipment inspection (PSI). If there is an issue with NCV33163PG, 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 NCV33163PG part is unused and in its original packaging.
Return procedure for NCV33163PG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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