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onsemi NCP59151DS33R4G
- Part No.:
- NCP59151DS33R4G
- Manufacturer:
- onsemi
- Package:
- TO-263-6, D2PAK (5 Leads + Tab), TO-263BA
- Datasheet:
-
NCP59151DS33R4G.pdf
- Description:
- IC REG LINEAR 3.3V 1.5A D2PAK-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,842
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Product details
Overview
NCP59151DS33R4G from onsemi is a fixed-output, 3.3 V, 1.5 A very low-dropout (VLDO) linear regulator in D2PAK-5 package, featuring 300 mV typical dropout at full load, logic-compatible enable input, open-collector error flag, and stable operation with ceramic output capacitors. It delivers high-precision regulation for FPGA core supplies and post-regulation in industrial power systems.
For engineers reviewing the NCP59151DS33R4G datasheet, pinout, applications, or equivalent options, key selection criteria include dropout voltage at 1.5 A, ground current vs. load, thermal resistance (RJA = 52°C/W), error flag threshold accuracy (95% VOUT), and compatibility with 47 µF ceramic output capacitance.
Technical Context
The NCP59151DS33R4G implements a PMOS pass transistor architecture enabling ultra-low dropout and fast transient response. Its internal reference maintains ±2% output voltage accuracy across −40°C to +125°C, with line regulation of 0.5% and load regulation of 1.0%.
It integrates CMOS/TTL-compatible enable logic (1.8 V turn-on threshold), open-collector flag with 95% VOUT undervoltage detection and 2% hysteresis, and protection circuitry including thermal shutdown, current limiting (2.0–3.0 A), and reverse output current blocking up to 6.5 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3 V ±2% over temperature and load - ensures stable core rail for 3.3 V logic and I/O interfaces. |
| Max Output Current | 1.5 A continuous - supports high-current FPGA I/O banks and ASIC auxiliary rails. |
| Typical Dropout | 300 mV at 1.5 A - enables operation from 3.6 V input while maintaining regulation, critical for battery-backed or low-headroom systems. |
| Ground Current | 40–80 mA at 1.5 A - minimizes total system power loss and simplifies thermal design in compact layouts. |
| Error Flag Threshold | 95% of VOUT with 2% hysteresis - provides reliable undervoltage detection without chatter during marginal line conditions. |
| Enable Input Threshold | 1.8 V (enable), 0.8 V (shutdown) - compatible with 3.3 V and 1.8 V logic families without level shifting. |
| Thermal Resistance | RJA = 52°C/W (PCB with 100 mm² 2 oz Cu) - defines maximum power dissipation (≈1.4 W) before junction exceeds 125°C at 25°C ambient. |
Pinout & Package
D2PAK-5 (Case 936A) thermally enhanced surface-mount package with exposed tab connected to GND for improved heat dissipation. Pin 1 = EN, Pin 2 = VIN, Pin 3 = GND, Pin 4 = VOUT, Pin 5 = FLG.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (EN) | Logic-level enable input | CMOS/TTL-compatible control: ≥1.8 V enables regulator; ≤0.8 V forces shutdown with <5 µA quiescent draw. |
| 2 (VIN) | Main input supply connection | Accepts 2.24–13.5 V input; supports up to 18 V absolute max - accommodates wide-input industrial and automotive supplies. |
| 3 (GND) | Power and signal reference ground | Common return for input, output, and internal circuitry; tab is electrically tied to this pin for thermal conduction. |
| 4 (VOUT) | Regulated output terminal | Delivers 3.3 V ±2% at up to 1.5 A; requires ≥47 µF ceramic capacitor for stability and transient performance. |
| 5 (FLG) | Open-collector error flag | Active-low output asserting when VOUT drops below 95% nominal; sinks ≥1 mA at 400 mV - interfaces directly with microcontroller GPIO or supervisor ICs. |
Key Features
| Feature | Design Value |
|---|---|
| Stable with ceramic output capacitors | Eliminates need for electrolytic or tantalum caps - reduces board area, improves reliability, and enables fast load-step response. |
| Fast transient response | Sub-500 µs startup time and low output impedance maintain regulation during FPGA configuration current surges. |
| Reverse output current protection | Prevents backfeed from backup batteries or downstream supplies when VIN is absent - avoids unintended power path conflicts. |
| Integrated thermal shutdown | Auto-recovery protection triggers at 125°C junction - safeguards against sustained overload or inadequate heatsinking. |
| AEC-Q100 qualified variant available | NCV59151DS33R4G offers automotive-grade qualification (Grade 1, −40°C to +125°C) with PPAP support for infotainment and ADAS modules. |
Applications
| Industrial PLC I/O Module Power | FPGA Core & Auxiliary Rail |
|---|---|
Use Scenario: Powering isolated digital I/O channels in programmable logic controllers requiring clean, regulated 3.3 V for level-shifting and communication interfaces. IC Role / Device Role / Timing Role: Primary point-of-load (POL) regulator delivering stable 3.3 V from a 5–12 V intermediate bus. Use Value: 300 mV dropout enables use of lower-input intermediate rails, reducing upstream converter losses; error flag alerts controller of rail collapse before I/O faults occur. | Use Scenario: Supplying configurable logic blocks and transceivers in Xilinx Artix-7 or Intel Cyclone V FPGAs during configuration and steady-state operation. IC Role / Device Role / Timing Role: Secondary LDO providing low-noise, fast-response 3.3 V for I/O banks and configuration memory interface. Use Value: Ceramic-capacitor stability and sub-500 µs startup ensure reliable bitstream loading; 1.5 A rating covers peak configuration currents without droop. |
| Networking Switch ASIC Bias | Battery-Backed Industrial Controller |
Use Scenario: Regulating 3.3 V for Ethernet PHYs and packet processing ASICs in managed Gigabit switches operating from 5 V or 12 V DC inputs. IC Role / Device Role / Timing Role: Post-regulator after primary buck converter, filtering switching noise and tightening voltage tolerance. Use Value: PSRR >60 dB at 100 kHz suppresses ripple from upstream converters; low ground current (<80 mA) minimizes thermal impact in dense switch PCBs. | Use Scenario: Maintaining real-time clock and SRAM backup power during main supply interruption in factory automation controllers. IC Role / Device Role / Timing Role: Reverse-current-protected LDO allowing seamless switchover between main 5 V rail and 3.6 V Li-ion backup cell. Use Value: Withstands up to 6.5 V reverse VOUT–VIN differential without reverse conduction - eliminates need for external blocking diode and associated voltage drop. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MIC29152-3.3WS | Same 3.3 V/1.5 A rating but higher 400 mV dropout at 1.5 A; no integrated error flag; SOT-223 package (higher RJA ≈ 70°C/W). | Lacks fault monitoring capability; less suitable for safety-critical or supervised systems requiring rail health reporting. | Choose MIC29152-3.3WS only if flag functionality is unnecessary and board space constraints favor smaller footprint over thermal performance. |
| TPS7A4701RGWR | Lower 1 A rating, 310 mV dropout at 1 A, ±0.5% initial accuracy, but requires minimum 2.2 µF ceramic output cap - not pin-compatible. | Higher precision and lower noise, but insufficient current headroom for 1.5 A FPGA I/O loads; different pinout and package (QFN-20). | Select TPS7A4701RGWR only for ultra-low-noise analog biasing where 1 A is sufficient and layout allows redesign. |
Compared with MIC29152-3.3WS and TPS7A4701RGWR, the NCP59151DS33R4G uniquely combines 1.5 A delivery, integrated error flag, D2PAK-5 thermal performance (RJA = 52°C/W), and 300 mV dropout - making it optimal for industrial FPGA and ASIC POL applications requiring both robustness and supervision.
Availability
NCP59151DS33R4G is available at Aetrix Electronics and suitable for industrial PLCs, FPGA power management, networking equipment, and battery-backed controllers requiring stable component supply and long-term manufacturability.
Supply support for NCP59151DS33R4G 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, and cloud infrastructure markets.
The NCP59150 series was designed specifically for high-current, low-dropout point-of-load regulation in space-constrained industrial and computing systems - emphasizing thermal robustness, ceramic-capacitor compatibility, and integrated supervision features.
FAQ
What is the maximum input voltage rating for the NCP59151DS33R4G?
The NCP59151DS33R4G has an absolute maximum input voltage of 18 V, but its recommended operating range is 2.24 V to 13.5 V. Operation above 13.5 V is not guaranteed and may compromise reliability or parametric performance. The 18 V rating provides margin for transient spikes in industrial environments, though sustained operation should remain within the recommended limits specified in the datasheet.
Does the NCP59151DS33R4G require an external resistor divider for output voltage setting?
No, the NCP59151DS33R4G is a fixed-output 3.3 V device and does not require an external resistor divider. Unlike the adjustable NCP59152 variants, this part integrates internal feedback and delivers 3.3 V ±2% without external components. The FLG pin monitors this fixed output directly - no SENSE or ADJ connections are needed.
Can the NCP59151DS33R4G be used with a 47 µF ceramic output capacitor?
Yes, the NCP59151DS33R4G is explicitly designed and characterized for stable operation with 47 µF or greater ceramic output capacitors. This eliminates ESR dependency and improves transient response compared to electrolytic solutions. The datasheet confirms stability across temperature and load with standard X5R/X7R MLCCs, and recommends placing the capacitor within 1 inch of the VOUT and GND pins.
What is the thermal shutdown behavior of the NCP59151DS33R4G?
The NCP59151DS33R4G activates thermal shutdown when junction temperature exceeds approximately 125°C, disabling the pass element until die temperature falls below the hysteresis threshold (~15°C below trip point). During shutdown, the EN pin remains functional, and the FLG pin asserts low to indicate fault condition. Recovery is automatic and does not require cycling EN.
Is the NCP59151DS33R4G pin-compatible with other devices in the NCP59150 series?
The NCP59151DS33R4G shares identical pinout (EN/VIN/GND/VOUT/FLG) and package (D2PAK-5) with other fixed-voltage D2PAK-5 variants in the series, such as NCP59151DS25R4G and NCP59151DS50R4G. However, it is not pin-compatible with adjustable versions (e.g., NCP59152DSADJR4G), which substitute FLG with ADJ on Pin 5, nor with DFN8 or D2PAK-3 variants due to differing pin counts and layouts.
NCP59151DS33R4G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-263-6, D2PAK (5 Leads + Tab), TO-263BA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 13.5V
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.5V @ 1.5A
- Current - Output:
- 1.5A
- Current - Quiescent (Iq):
- -
- Current - Supply (Max):
- -
- PSRR:
- -
- Control Features:
- Enable, Error Flag
- Protection Features:
- Over Current, Over Temperature, Reverse Polarity
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- D2PAK-5
NCP59151DS33R4G FAQ
1.How can I place an order for NCP59151DS33R4G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP59151DS33R4G 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 NCP59151DS33R4G reliable?
The price and inventory of NCP59151DS33R4G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP59151DS33R4G is usually 5 days.
3.What payment methods are accepted for NCP59151DS33R4G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP59151DS33R4G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP59151DS33R4G?
NCP59151DS33R4G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP59151DS33R4G 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 NCP59151DS33R4G?
For technical support, including NCP59151DS33R4G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP59151DS33R4G requirements.
6.How does Aetrix verify that NCP59151DS33R4G is sourced from the original manufacturer or authorized distributors?
All NCP59151DS33R4G 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 NCP59151DS33R4G meets industry standards.
7.What is the process for return or replacement of NCP59151DS33R4G?
All NCP59151DS33R4G units undergo pre-shipment inspection (PSI). If there is an issue with NCP59151DS33R4G, 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 NCP59151DS33R4G part is unused and in its original packaging.
Return procedure for NCP59151DS33R4G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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