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onsemi NCP5501DT15RKG
- Part No.:
- NCP5501DT15RKG
- Manufacturer:
- onsemi
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
NCP5501DT15RKG.pdf
- Description:
- IC REG LINEAR 1.5V 500MA DPAK
- Quantity:
- Payment:
- Shipping:
Inventory:2,436
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Product details
Overview
NCP5501DT15RKG from onsemi is a fixed-output 1.5 V, 500 mA low-dropout (LDO) linear voltage regulator in DPAK-3 package, featuring 2.9% output voltage accuracy, 230 mV dropout at full load, and thermal shutdown protection. It serves as a post-regulation stage in automotive and industrial power supplies where stable low-voltage biasing of microcontrollers or sensors is required.
For engineers reviewing the NCP5501DT15RKG datasheet, pinout, applications, or equivalent options, key selection criteria include dropout performance at 500 mA, stability with ceramic output capacitors, ambient temperature range (−40°C to +85°C), and absence of enable control - critical for simplified point-of-load designs without logic-level sequencing.
Technical Context
The NCP5501DT15RKG uses an internal PNP pass transistor architecture to achieve low dropout voltage while maintaining regulation across its full 500 mA load range. Its error amplifier compares a bandgap reference (1.25 V) against the regulated 1.5 V output, enabling tight line and load regulation (±1.0% each).
No enable pin is present - unlike NCP5500 variants - making it a permanently enabled device. Protection functions include short-circuit current limiting (900 mA typical) and thermal shutdown activation at 150°C junction temperature, with reverse bias protection valid when VOUT − VIN ≤ 7 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.5 V ±2.9% (±43.5 mV) at 25°C; maintains regulation over −40°C to +85°C ambient. |
| Max Output Current | 500 mA continuous; current limit trips at 900 mA to protect against sustained overload. |
| Dropout Voltage | 230 mV at 500 mA load - enables operation with input as low as 1.73 V while sustaining 1.5 V output. |
| Ground Current | 20 mA at 500 mA load - determines total system power loss and impacts thermal design. |
| Ripple Rejection | 75 dB at 120 Hz - suppresses switching noise from upstream SMPS stages feeding this LDO. |
| Thermal Shutdown | Activates at 150°C junction temperature - prevents permanent damage during transient overloads or poor heatsinking. |
| Input Voltage Range | 2.5 V to 16 V - supports wide-input applications including 12 V automotive battery rails with transients. |
Pinout & Package
DPAK-3 package (Case 369C), surface-mount, with exposed tab thermally connected to GND. Tab provides primary heat dissipation path; PCB copper area ≥650 mm² recommended per thermal data.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1. Vin | Positive input supply | Accepts 2.5–16 V DC; requires 10 µF input capacitor for stability and transient suppression. |
| Tab, 2. GND | Ground reference and thermal sink | Internally bonded to die substrate; must be soldered to large PCB copper pour for thermal management. |
| 3. Vout | Regulated output | Delivers stable 1.5 V ±2.9%; requires 4.7 µF ceramic output capacitor for loop stability. |
Key Features
| Feature | Design Value |
|---|---|
| Stable with ceramic capacitors | Guaranteed stable using low-ESR 4.7 µF X5R/X7R ceramics - eliminates need for costly tantalum or electrolytic caps. |
| Low quiescent ground current | 10 mA at 500 mA load - minimizes no-load power loss in always-on systems like automotive body controllers. |
| Reverse bias protection | Prevents reverse current flow when VOUT > VIN by up to 7 V - protects against backfeeding in multi-rail systems. |
| Pb-free and RoHS compliant | Meets JEDEC J-STD-020 reflow profile for Pb-free soldering; MSL Level 1 - no dry-pack requirement. |
| Automotive-grade option available | NCV5501DT15RKG variant qualified to AEC-Q100 Grade 1 (−40°C to +125°C) with PPAP support. |
Applications
| Automotive Body Control Module | Industrial PLC I/O Power Rail |
|---|---|
Use Scenario: Powers 1.5 V logic interface circuitry in door module ECUs handling window lift, mirror fold, and lock actuation signals. IC Role / Device Role / Timing Role: Final-stage LDO delivering clean, low-noise 1.5 V to FPGA configuration banks and level-shifters. Use Value: 230 mV dropout allows operation down to 1.73 V input - maintains functionality during cold-crank battery dips to 6 V on 12 V rail. |
Use Scenario: Supplies isolated 1.5 V bias to analog front-end ADC drivers in modular I/O expansion cards. IC Role / Device Role / Timing Role: Point-of-use regulator decoupling noise from shared 3.3 V/5 V backplane supplies. Use Value: 75 dB ripple rejection at 120 Hz suppresses switching artifacts from adjacent SMPS modules, preserving ADC SNR. |
| Consumer Audio DAC Reference Supply | Medical Sensor Signal Chain Bias |
Use Scenario: Provides ultra-low-noise 1.5 V reference voltage for high-resolution audio DACs in portable Bluetooth speakers. IC Role / Device Role / Timing Role: Low-noise analog supply rail; output noise measured at 18 µVRMS (10 Hz–100 kHz). Use Value: 18 µVRMS noise floor ensures <105 dB THD+N performance in 24-bit/192 kHz playback paths. |
Use Scenario: Powers precision op-amps and instrumentation amplifiers in wearable ECG front-ends requiring sub-mV offset stability. IC Role / Device Role / Timing Role: Stable analog bias source with <±1.0% load regulation - prevents gain drift under varying sensor loading. Use Value: ±1.0% load regulation ensures consistent amplifier gain across 1–500 µA sensor output currents. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NCV5501DT15RKG | Same electrical specs but AEC-Q100 Grade 1 qualified (−40°C to +125°C); Pb-free, PPAP-capable. | Required for automotive production; supports extended ambient and rigorous change control. | Select when automotive qualification, extended temperature, or PPAP documentation is mandatory. |
| MCP1700T-1502E/MB | 150 mA max output; 6 µA quiescent current; SOT-23-3 package; no thermal shutdown. | Suitable only for ultra-low-power, non-safety-critical applications with <150 mA loads. | Choose only for space-constrained, battery-powered designs where 500 mA capability is unnecessary. |
Compared with NCP5501DT15RKG, the NCV5501DT15RKG adds automotive qualification and extended temperature range without altering pinout or electrical behavior, while the MCP1700T-1502E/MB trades 3.3× lower output current and missing safety features for ultra-low quiescent power and smaller footprint.
Availability
NCP5501DT15RKG is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC I/O modules, consumer audio DAC supplies, and medical sensor signal chains requiring stable component supply and long-term manufacturability.
Supply support for NCP5501DT15RKG 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 focused on energy-efficient electronics, with leadership in automotive, industrial, and cloud power solutions.
The NCP5501 series belongs to onsemi's high-reliability LDO portfolio designed for robust point-of-load regulation in harsh environments - emphasizing low dropout, ceramic-capacitor stability, and integrated protection.
FAQ
What is the maximum input voltage rating for the NCP5501DT15RKG?
The NCP5501DT15RKG has an absolute maximum input voltage of +16 V. Operation above this level risks permanent damage. For reliable long-term use, the recommended operating input range is 2.5 V to 16 V, with minimum input determined by dropout: VIN(MIN) = 1.5 V + 0.23 V = 1.73 V at 500 mA. The NCP5501DT15RKG must never be subjected to reverse input voltage.
Does the NCP5501DT15RKG include an enable pin?
No, the NCP5501DT15RKG does not include an enable pin. It is a permanently enabled device - power applied to Vin immediately produces regulated 1.5 V at Vout. This distinguishes it from the NCP5500DT15RKG (DPAK-5), which includes Pin 1 as EN. The NCP5501DT15RKG pinout is strictly Vin–GND–Vout in DPAK-3 format.
What output capacitor value and type are required for stable operation of the NCP5501DT15RKG?
The NCP5501DT15RKG is specified for stable operation with a 4.7 µF ceramic capacitor (X5R or X7R dielectric) at the output. Lower values (≥1 µF) may work depending on ESR and load conditions, but 4.7 µF is the tested and guaranteed value per datasheet Figure 17–20. Tantalum or aluminum electrolytic capacitors are not required or recommended.
Is the NCP5501DT15RKG suitable for automotive applications?
The standard NCP5501DT15RKG is rated for −40°C to +85°C ambient and is suitable for under-dash or cabin applications. For under-hood or safety-critical automotive use, the NCV5501DT15RKG variant is required - it is AEC-Q100 Grade 1 qualified (−40°C to +125°C), PPAP-capable, and subject to enhanced site and change control. Both share identical electrical specs and DPAK-3 pinout.
How does the thermal performance of the NCP5501DT15RKG compare between DPAK-3 and DPAK-5 packages?
The DPAK-3 package (used by NCP5501DT15RKG) has a junction-to-air thermal resistance (RJA) of 80°C/W, versus 60°C/W for DPAK-5 (NCP5500DT15RKG). At 500 mA and 1.5 V output, power dissipation is ~0.115 W - resulting in ~9.2°C rise above ambient in DPAK-3 with minimal copper, versus ~6.9°C in DPAK-5. Adequate PCB copper (≥650 mm²) reduces both values significantly per datasheet Note 6.
NCP5501DT15RKG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 16V
- Voltage - Output (Min/Fixed):
- 1.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 1.073V @ 500mA
- Current - Output:
- 500mA
- Current - Quiescent (Iq):
- 500 µA
- Current - Supply (Max):
- 20 mA
- PSRR:
- 75dB ~ 70dB (120hZ ~ 10kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature, Reverse Polarity
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DPAK
NCP5501DT15RKG FAQ
1.How can I place an order for NCP5501DT15RKG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP5501DT15RKG 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 NCP5501DT15RKG reliable?
The price and inventory of NCP5501DT15RKG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP5501DT15RKG is usually 5 days.
3.What payment methods are accepted for NCP5501DT15RKG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP5501DT15RKG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP5501DT15RKG?
NCP5501DT15RKG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP5501DT15RKG 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 NCP5501DT15RKG?
For technical support, including NCP5501DT15RKG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP5501DT15RKG requirements.
6.How does Aetrix verify that NCP5501DT15RKG is sourced from the original manufacturer or authorized distributors?
All NCP5501DT15RKG 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 NCP5501DT15RKG meets industry standards.
7.What is the process for return or replacement of NCP5501DT15RKG?
All NCP5501DT15RKG units undergo pre-shipment inspection (PSI). If there is an issue with NCP5501DT15RKG, 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 NCP5501DT15RKG part is unused and in its original packaging.
Return procedure for NCP5501DT15RKG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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