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onsemi NCP5500DT15RKG
- Part No.:
- NCP5500DT15RKG
- Manufacturer:
- onsemi
- Package:
- TO-252-5, DPAK (4 Leads + Tab), TO-252AD
- Datasheet:
-
NCP5500DT15RKG.pdf
- Description:
- IC REG LINEAR 1.5V 500MA DPAK-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
NCP5500DT15RKG from onsemi is a fixed-output 1.5 V, 500 mA low-dropout linear voltage regulator in DPAK-5 package with enable/shutdown control, ±2.9% output voltage accuracy, 230 mV dropout at full load, and reverse bias protection-used for post-SMPS regulation in automotive infotainment power rails.
For engineers reviewing the NCP5500DT15RKG datasheet, pinout, applications, or equivalent options, key selection criteria include dropout performance at 500 mA, thermal shutdown threshold (150°C), EN pin logic thresholds (VENon > 2.0 V, VENoff < 0.4 V), and stability with low-ESR ceramic capacitors.
Technical Context
The NCP5500DT15RKG uses an internal PNP pass transistor to achieve low dropout while maintaining regulation across −40°C to +85°C ambient. Its error amplifier compares a bandgap reference to the output via internal feedback, enabling tight line (±0.1%) and load (±0.35%) regulation.
Enable functionality is implemented with TTL-compatible input logic: high-enable (≥2.0 V) activates regulation; low-disable (≤0.4 V) forces shutdown with ≤50 µA quiescent current. Thermal shutdown triggers at 150°C junction temperature and includes hysteresis for safe recovery.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.5 V ±2.9% (4.9% min/max deviation over temp/load) |
| Max Output Current | 500 mA continuous-supports mid-power microcontrollers and sensors without external heatsink under typical PCB copper area |
| Dropout Voltage | 230 mV at 500 mA-enables operation from 1.73 V input (e.g., LiFePO₄ battery or buck converter tail-end) |
| Enable Thresholds | VENon ≥ 2.0 V, VENoff ≤ 0.4 V-compatible with 3.3 V and 5 V logic families without level shifting |
| Thermal Shutdown | 150°C activation with hysteresis-prevents permanent damage during sustained overload or poor airflow |
| Ripple Rejection | 75 dB at 120 Hz-suppresses switching noise from upstream DC/DC converters feeding sensitive analog circuitry |
| Ground Current | 10 mA at 500 mA load-low quiescent loss improves efficiency in always-on subsystems |
Pinout & Package
DPAK-5 (Case 175AA), Pb-free, center-lead crop package with exposed tab thermally connected to GND-designed for high-power dissipation on standard FR-4 PCBs using 650 mm² copper pour.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (EN) | Enable control input | Active-high TTL-compatible pin; tie to VIN for always-on operation or drive externally for sequenced power-up |
| 2 (VIN) | Input supply | Accepts 2.5 V to 16 V DC; requires 10 µF input capacitor for transient suppression and stability |
| TAB (3) | Ground / thermal pad | Internally connected to GND; must be soldered to large copper area for thermal management (RJA = 60°C/W) |
| 4 (VOUT) | Regulated output | Delivers stable 1.5 V to load; requires 4.7 µF ceramic output capacitor for loop stability per datasheet guidelines |
| 5 (NC/ADJ) | No-connect (fixed version) | Not internally connected-must remain unconnected or floating; not used for adjustment in this 1.5 V variant |
Key Features
| Feature | Design Value |
|---|---|
| Low dropout at full load | 230 mV enables use with input sources as low as 1.73 V-critical for battery-powered systems near end-of-discharge |
| Reverse bias protection | Prevents backfeed current when VOUT > VIN by up to 7 V-protects upstream supplies during hot-swap or fault conditions |
| Short-circuit and thermal protection | Current limit (~700 mA) and 150°C shutdown prevent latch-up and catastrophic failure during sustained overload |
| Stable with ceramic capacitors | Validated for 1–10 µF X5R/X7R ceramics-eliminates need for costly tantalum or electrolytic capacitors |
| Pb-free DPAK-5 package | RoHS-compliant, reflow-solderable package with RJC = 5.2°C/W-supports industrial and automotive assembly processes |
Applications
| Automotive Infotainment Power | Industrial Sensor Node Regulation |
|---|---|
Use Scenario: Supplies 1.5 V core voltage to SoC subsystems (e.g., audio DSP, display controller) in head units where input is derived from a 3.3 V buck converter. IC Role / Device Role / Timing Role: Post-regulator providing clean, low-noise 1.5 V rail with fast transient response to dynamic processor loads. Use Value: 75 dB ripple rejection suppresses switching artifacts from upstream DC/DC, reducing audible noise and ADC quantization errors. | Use Scenario: Powers ultra-low-power 16-bit ADC and wireless transceiver in battery-operated condition monitoring node. IC Role / Device Role / Timing Role: Primary LDO delivering regulated 1.5 V from a 2.5–4.2 V Li-ion cell, enabled only during measurement cycles. Use Value: 10 µA shutdown current extends battery life; 230 mV dropout allows >15% longer runtime vs. higher-VDO alternatives. |
| Point-of-Load FPGA Core Supply | Medical Diagnostic Imaging Subsystem |
Use Scenario: Provides 1.5 V core voltage to FPGA I/O banks in portable ultrasound equipment with strict EMI requirements. IC Role / Device Role / Timing Role: Low-noise local regulator decoupling high-speed digital logic from shared system rails. Use Value: 35 µVRMS output noise (at 100 mA) prevents timing jitter in high-speed LVDS interfaces and clock distribution networks. | Use Scenario: Regulates power to precision analog front-end (AFE) in handheld ECG monitor requiring stable 1.5 V reference for signal conditioning. IC Role / Device Role / Timing Role: Precision voltage source with ±2.9% accuracy over −40°C to +85°C ensuring consistent gain calibration across operating environments. Use Value: Tight output tolerance eliminates need for software trimming, reducing BOM cost and firmware complexity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-1502E/MB | 250 mA max output, SOT-23-5 package, no enable pin, 600 mV dropout at 250 mA | Limited to lower-current peripherals; lacks sequencing control and thermal margin for 500 mA loads | Select only for space-constrained, low-power designs where enable and thermal robustness are non-critical |
| TPS7A2015PDBVR | 500 mA, 1.5 V fixed, 165 mV dropout at 500 mA, WSON-6 package, enable pin, ±1% accuracy | Higher accuracy and lower dropout but smaller thermal footprint-requires careful PCB layout for heat dissipation | Prefer for high-precision, compact designs with adequate thermal design; avoid if DPAK-5 mechanical mounting or legacy footprint compatibility is required |
Compared with MCP1700T-1502E/MB, NCP5500DT15RKG delivers double the current and integrated enable control; versus TPS7A2015PDBVR, it trades tighter accuracy and lower dropout for superior thermal performance in DPAK-5 and proven automotive qualification (AEC-Q100 capable).
Availability
NCP5500DT15RKG is available at Aetrix Electronics and suitable for automotive infotainment, industrial sensor nodes, point-of-load FPGA supplies, and medical diagnostic imaging subsystems requiring stable component supply, long-term lifecycle support, and AEC-Q100-aligned reliability.
Supply support for NCP5500DT15RKG 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, and sensing solutions for automotive, industrial, and cloud infrastructure markets.
The NCP5500 series was designed for high-reliability, wide-input-voltage LDO regulation in demanding environments-including automotive cabin electronics-where low dropout, thermal resilience, and enable-controlled power sequencing are essential.
FAQ
What is the maximum input voltage rating for the NCP5500DT15RKG?
The NCP5500DT15RKG supports an absolute maximum input voltage of +18 V, but its recommended operating input range is 2.5 V to 16 V. Operation below 2.5 V risks dropout-minimum valid input is VOUT + VDO = 1.73 V-but 2.5 V ensures guaranteed regulation across all load and temperature conditions per datasheet specifications.
Does the NCP5500DT15RKG require an external resistor divider for 1.5 V output?
No, the NCP5500DT15RKG is a fixed-output variant-pin 5 (NC/ADJ) is not connected internally and must remain unconnected. The 1.5 V regulation is achieved via internal feedback; no external resistors are needed, unlike adjustable versions such as NCP5500DTADJRKG.
Can the NCP5500DT15RKG be used in automotive applications?
Yes-the NCP5500DT15RKG is part of the NCP5500 family qualified for industrial temperature range (−40°C to +85°C) and shares the same architecture and qualification path as the AEC-Q100-compliant NCV5500 variants. It is widely deployed in non-safety-critical automotive subsystems including infotainment and body control modules.
What is the thermal resistance (RJA) of the NCP5500DT15RKG in its DPAK-5 package?
The NCP5500DT15RKG in DPAK-5 (Case 175AA) has a specified junction-to-air thermal resistance (RJA) of 60°C/W when mounted on a standard PCB with 650 mm² of 1 oz copper. This value assumes optimal thermal layout; actual RJA improves with larger copper areas or external heatsinking.
Is reverse bias protection active in the NCP5500DT15RKG, and what is its limit?
Yes, the NCP5500DT15RKG includes reverse bias protection that prevents destructive back-current flow when VOUT exceeds VIN by up to 7 V-verified per datasheet Note 2. This feature safeguards upstream supplies during hot-swap events or when downstream capacitors retain charge after input removal.
NCP5500DT15RKG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-252-5, DPAK (4 Leads + Tab), TO-252AD
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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-5
NCP5500DT15RKG FAQ
1.How can I place an order for NCP5500DT15RKG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP5500DT15RKG 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 NCP5500DT15RKG reliable?
The price and inventory of NCP5500DT15RKG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP5500DT15RKG is usually 5 days.
3.What payment methods are accepted for NCP5500DT15RKG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP5500DT15RKG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP5500DT15RKG?
NCP5500DT15RKG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP5500DT15RKG 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 NCP5500DT15RKG?
For technical support, including NCP5500DT15RKG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP5500DT15RKG requirements.
6.How does Aetrix verify that NCP5500DT15RKG is sourced from the original manufacturer or authorized distributors?
All NCP5500DT15RKG 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 NCP5500DT15RKG meets industry standards.
7.What is the process for return or replacement of NCP5500DT15RKG?
All NCP5500DT15RKG units undergo pre-shipment inspection (PSI). If there is an issue with NCP5500DT15RKG, 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 NCP5500DT15RKG part is unused and in its original packaging.
Return procedure for NCP5500DT15RKG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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