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onsemi NCV47711DAJR2G
- Part No.:
- NCV47711DAJR2G
- Manufacturer:
- onsemi
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
NCV47711DAJR2G.pdf
- Description:
- IC REG LIN POS ADJ 350MA 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,656
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Product details
Overview
NCV47711DAJR2G from onsemi is an automotive-grade adjustable LDO regulator delivering up to 350 mA output current with ±3% output voltage accuracy across 5 V–20 V range, reverse input voltage protection, and integrated current sense (CSO) for real-time output current monitoring and adjustable current limiting (10–350 mA). It operates from 5.5 V to 40 V input and supports harsh environments including instrument clusters and infotainment systems.
For engineers reviewing the NCV47711DAJR2G datasheet, pinout, applications, or equivalent options, key selection criteria include its 250 mV typical dropout at 150 mA, 3.3 V logic-compatible enable threshold (0.99 V low / 2.31 V high), thermal shutdown at 150 °C, and SOIC-8 package with exposed pad option variants.
Technical Context
The NCV47711DAJR2G uses a PNP pass transistor controlled by a bandgap-referenced error amplifier (VREF1 = 1.275 V), enabling ultra-low dropout and stable regulation under wide line/load/temperature conditions. Its saturation control prevents oversaturation during low-Vin or overload conditions, minimizing ground pin quiescent current.
Current sensing is implemented via a precision current mirror: CSO voltage is proportional to output current (ICSO/Iout = 1/100 ±10%), and the external RCSO resistor sets the current limit (ILIM = 100 × 2.55 V / RCSO). The device integrates reverse input voltage protection, overcurrent limitation, and thermal shutdown with hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | Up to 350 mA - sufficient for powering microcontrollers, audio codecs, or display drivers in automotive modules. |
| Dropout Voltage | 250 mV typ. at 150 mA - enables stable regulation even when input drops close to output (e.g., 12 V battery sag to 5 V rail). |
| Output Voltage Range | Adjustable from 5 V to 20 V via external resistor divider - supports diverse subsystems without redesigning power architecture. |
| Current Limit Accuracy | ±10% over 10–350 mA range - ensures predictable fault response and system-level current budgeting. |
| Enable Threshold | Logic-low disable ≤0.99 V; logic-high enable ≥2.31 V - compatible with 3.3 V MCU GPIO without level-shifting. |
| Thermal Shutdown | Activates at TJ ≥150 °C - protects against sustained overload or poor heatsinking in sealed enclosures. |
| Input Voltage Range | −42 V to +45 V absolute max; 5.5 V to 40 V recommended - withstands load dump (ISO 7637-2 Pulse 5a) and reverse battery connection. |
Pinout & Package
NCV47711DAJR2G is housed in a Pb-free SOIC-8 (Case 751, suffix D) package with standard 1.27 mm pitch and no exposed pad. Pin 1 is ADJ; pins 6 and 7 are NC; EPAD is absent - thermal performance relies on PCB copper area per JEDEC 51.3 (RθJA = 121 °C/W single-layer, 77 °C/W 4-layer).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - ADJ | Feedback reference input | Connects to resistor divider (R1/R2) to set output voltage; internal 1.275 V reference referenced to this node. |
| 2 - GND | Power ground return | Primary ground path for regulator bias, current sense, and thermal dissipation - must be low-impedance to minimize noise and offset. |
| 3 - EN | Enable control input | Active-high logic input; <0.99 V disables output, >2.31 V enables - supports MCU-controlled power sequencing. |
| 4 - CSO | Current sense output | Provides analog voltage (2.55 V at ILIM) proportional to Iout (1% scaling); used for diagnostics, current limiting, and system protection. |
| 5 - Vin | Main power input | Accepts 5.5–40 V supply; includes −42 V reverse polarity protection - eliminates need for external blocking diode. |
| 6 - NC | No connect | Internally unconnected - must remain floating; no routing or soldering required. |
| 7 - NC | No connect | Internally unconnected - must remain floating; no routing or soldering required. |
| 8 - Vout | Regulated output | Delivers stable, low-noise DC output; requires local 22 µF ceramic capacitor (ESR <1.5 Ω) for stability per Figure 17. |
Key Features
| Feature | Design Value |
|---|---|
| Adjustable output voltage | Set from 5 V to 20 V using two external resistors - eliminates need for multiple fixed-voltage LDO SKUs in BOM. |
| Integrated current sense | CSO pin outputs voltage linearly proportional to Iout (100:1 ratio) - enables real-time current monitoring without shunt resistor or op-amp. |
| Programmable current limit | Set between 10 mA and 350 mA via single external RCSO resistor - simplifies overcurrent protection design and avoids discrete current-limit ICs. |
| Reverse input voltage protection | Withstands −42 V on Vin while blocking reverse current - removes requirement for external series diode in battery-connected applications. |
| Automotive qualification | AEC-Q100 Grade 1 (−40 °C to +125 °C ambient) - validated for engine bay, dashboard, and infotainment use cases. |
Applications
| Audio and Infotainment System | Instrument Cluster |
|---|---|
Use Scenario: Powering DSP, amplifier, and touchscreen controller in head unit with variable battery voltage and EMI constraints. IC Role / Device Role / Timing Role: Primary 5 V or 12 V LDO supplying clean, regulated voltage to noise-sensitive analog and digital circuitry. Use Value: Low 100 µVrms output noise and 70 dB PSRR at 100 Hz suppresses audible hum and prevents display flicker during alternator ripple events. | Use Scenario: Supplying MCU, CAN transceiver, and TFT backlight driver in digital gauge cluster with extended temperature operation. IC Role / Device Role / Timing Role: High-reliability voltage regulator handling cold-crank (5.5 V) and load-dump (40 V) transients without reset or latch-up. Use Value: −42 V to +45 V absolute input rating and thermal shutdown ensure continuous operation during vehicle start-stop cycles and thermal stress. |
| Navigation Module | Satellite Radio Receiver |
Use Scenario: Providing stable 3.3 V or 5 V rail to GPS baseband processor and RF front-end in embedded navigation units. IC Role / Device Role / Timing Role: Adjustable LDO with precise enable control for power sequencing and low-quiescent-current sleep mode. Use Value: 10 µA disable current and 150 µA quiescent current at light load extend battery backup runtime during vehicle ignition-off periods. | Use Scenario: Regulating power to satellite radio tuner IC and audio DAC in premium audio systems subject to vibration and thermal cycling. IC Role / Device Role / Timing Role: Fault-tolerant LDO with current sense feedback for diagnostic reporting and safe shutdown on antenna short-circuit. Use Value: CSO pin provides direct analog readout of output current - enables firmware-based overcurrent detection and logging without additional components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NCV47711PDAJR2G | Same die, SOIC-8 EP package with exposed thermal pad - RθJA = 29 °C/W (4-layer PCB) vs. 77 °C/W for SOIC-8. | Better thermal performance required for >250 mA continuous loads or high ambient temperatures (>85 °C). | Select NCV47711PDAJR2G when board layout allows thermal pad connection and power dissipation exceeds 0.8 W. |
| TLV73312PDBVR | Fixed 1.2 V output, 300 mA, 170 mV dropout, no current sense or reverse protection - smaller SOT-23-5 package. | Non-adjustable, lower voltage, no automotive qualification - suitable only for non-safety-critical 1.2 V logic rails. | Choose TLV73312PDBVR only for cost-sensitive, space-constrained consumer designs where reverse protection and diagnostics are unnecessary. |
Compared with NCV47711DAJR2G, the NCV47711PDAJR2G offers superior thermal management for high-power automotive use, while the TLV73312PDBVR trades critical automotive protections and adjustability for size and cost in non-automotive applications.
Availability
NCV47711DAJR2G is available at Aetrix Electronics and suitable for automotive instrument clusters, infotainment head units, and satellite radio receivers requiring stable component supply across extended temperature and voltage ranges.
Supply support for NCV47711DAJR2G 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 NCV47711DAJR2G belongs to onsemi's automotive-qualified LDO portfolio, designed specifically for harsh-environment power regulation in safety-critical vehicle subsystems with integrated diagnostics and robust transient protection.
FAQ
What is the maximum output current capability of the NCV47711DAJR2G?
The NCV47711DAJR2G delivers up to 350 mA continuous output current under recommended operating conditions (TJ ≤ 150 °C, Vin ≤ 40 V). Its current limit is adjustable from 10 mA to 350 mA via external RCSO resistor, and the device enters current-limit foldback above that threshold to protect itself and downstream circuitry.
How does the CSO pin function in the NCV47711DAJR2G?
The CSO pin on the NCV47711DAJR2G provides an analog voltage proportional to output current (ICSO/Iout = 1/100 ±10%). At current limit, CSO reaches ~2.55 V; below limit, it scales linearly (e.g., 100 mA → 1.0 V). This enables real-time current monitoring, overcurrent diagnostics, and programmable current limiting without external components.
Can the NCV47711DAJR2G operate with a 5 V input when regulating a 5 V output?
No - the NCV47711DAJR2G requires minimum input voltage Vin ≥ Vout_nom + 0.5 V (per Recommended Operating Ranges). For a 5 V output, minimum Vin is 5.5 V. Attempting 5 V input would place the device in dropout, degrading regulation accuracy and potentially causing instability or thermal stress.
What package type is used for the NCV47711DAJR2G?
The NCV47711DAJR2G uses a Pb-free SOIC-8 package (Case 751, suffix D) with no exposed thermal pad. Its thermal resistance is RθJA = 121 °C/W on single-layer PCB and 77 °C/W on 4-layer PCB - significantly higher than the EP variant (NCV47711PDAJR2G), so thermal design must account for reduced heat dissipation.
Does the NCV47711DAJR2G include reverse input voltage protection?
Yes - the NCV47711DAJR2G incorporates integrated reverse input voltage protection and can withstand −42 V on the Vin pin without damage or reverse current flow. This eliminates the need for an external series Schottky diode in battery-connected applications, reducing BOM count and forward voltage drop.
NCV47711DAJR2G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Adjustable
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 40V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- 20V
- Voltage Dropout (Max):
- 0.5V @ 150mA
- Current - Output:
- 350mA
- Current - Quiescent (Iq):
- 230 µA
- Current - Supply (Max):
- 50 mA
- PSRR:
- 70dB (100Hz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature, Reverse Polarity
- Operating Temperature:
- -40°C ~ 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
NCV47711DAJR2G FAQ
1.How can I place an order for NCV47711DAJR2G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV47711DAJR2G 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 NCV47711DAJR2G reliable?
The price and inventory of NCV47711DAJR2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV47711DAJR2G is usually 5 days.
3.What payment methods are accepted for NCV47711DAJR2G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV47711DAJR2G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV47711DAJR2G?
NCV47711DAJR2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV47711DAJR2G 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 NCV47711DAJR2G?
For technical support, including NCV47711DAJR2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV47711DAJR2G requirements.
6.How does Aetrix verify that NCV47711DAJR2G is sourced from the original manufacturer or authorized distributors?
All NCV47711DAJR2G 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 NCV47711DAJR2G meets industry standards.
7.What is the process for return or replacement of NCV47711DAJR2G?
All NCV47711DAJR2G units undergo pre-shipment inspection (PSI). If there is an issue with NCV47711DAJR2G, 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 NCV47711DAJR2G part is unused and in its original packaging.
Return procedure for NCV47711DAJR2G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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