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onsemi NCV8570BSN28T1G
- Part No.:
- NCV8570BSN28T1G
- Manufacturer:
- onsemi
- Package:
- -
- Datasheet:
-
NCV8570BSN28T1G.pdf
- Description:
- IC REG LINEAR 2.8V 200MA 5TSOP
- Quantity:
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Inventory:4,535
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Product details
Overview
NCV8570BSN28T1G from onsemi is an automotive-grade 200 mA low-dropout linear regulator with ultra-low output noise (10 µVRMS @ 1.8 V, 10 Hz–100 kHz) and high PSRR (82 dB @ 1 kHz), housed in a thermally enhanced TSOP-5 package. It delivers stable 2.8 V output with ±2.5% accuracy across −40 °C to +125 °C, enabling use in RF front-ends, camera imaging modules, and GPS receivers where supply ripple and noise directly degrade signal integrity.
For engineers reviewing the NCV8570BSN28T1G datasheet, pinout, applications, or equivalent options, key selection criteria include its AEC-Q100 qualification, active discharge circuit for fast turn-off, enable-controlled sleep mode (<1 µA), and stability with 1 µF ceramic output capacitors - critical for space-constrained automotive infotainment and ADAS subsystems.
Technical Context
The NCV8570BSN28T1G employs a PMOS pass transistor architecture with integrated bandgap reference and dedicated BYP pin for external noise-bypass capacitor (10–100 nF), enabling sub-10 µVRMS noise performance. Its internal 5 MΩ pull-down resistor on EN ensures default-off behavior when unconnected.
Thermal protection includes thermal shutdown at 150 °C (with hysteresis reset at 135 °C) and current limiting (310 mA typ.) with short-circuit immunity. The device maintains regulation down to 85 mV dropout at 150 mA (VOUT = 2.8 V), supporting operation from VIN as low as 2.5 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.8 V ±2.5% - ensures precise biasing of RF amplifiers and image sensors without external feedback network. |
| Max Output Current | 200 mA continuous - sufficient for powering dual-core microcontrollers or multi-channel audio codecs in compact modules. |
| PSRR | 82 dB @ 1 kHz - suppresses switching noise from DC-DC converters feeding adjacent analog circuits. |
| Output Noise | 10 µVRMS (10 Hz–100 kHz, VOUT = 1.8 V, Cnoise = 10 nF) - meets stringent SNR requirements in HD video ADCs and GNSS baseband processors. |
| Dropout Voltage | 85 mV @ IOUT = 150 mA (VOUT = 2.8 V) - enables operation from partially discharged 3.3 V rails in battery-backed systems. |
| Quiescent Current | 75 µA @ IOUT = 200 mA - minimizes standby power loss in always-on vehicle telematics nodes. |
| Enable Threshold | VEN(HI) ≥ 1.2 V, VEN(LO) ≤ 0.4 V - compatible with 1.8 V/3.3 V logic families without level-shifting. |
Pinout & Package
TSOP-5 (Case 483) package: 2.9 mm × 1.6 mm × 1.1 mm body, exposed pad not present, Pb-free, RoHS-compliant.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Input Power Supply | Accepts 2.5 V to 5.5 V input; requires 1 µF ceramic decoupling to GND for EMI suppression and line transient response. |
| 2 (GND) | Power Ground Reference | Primary ground return path; connects internally to EPAD-equivalent in DFN variant but absent in TSOP-5. |
| 3 (EN) | Logic Enable Control | Active-high enable with internal 5 MΩ pull-down; drives <1 µA in disable state, enabling ultra-low-power wake-up sequencing. |
| 4 (OUT) | Regulated Output | Delivers stable 2.8 V; supports 1 µF ceramic output capacitor with ESR < 100 mΩ for stability per Figure 56. |
| 5 (BYP) | Noise Reduction Node | Connects to 10–100 nF capacitor to GND to shunt bandgap reference noise; determines turn-on time and final noise floor. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low noise output | 10 µVRMS (10 Hz–100 kHz) with 10 nF BYP cap - eliminates need for post-regulation LC filtering in sensitive RF chains. |
| High PSRR across frequency | 82 dB @ 1 kHz, >63 dB @ 10 kHz - preserves dynamic range in audio DACs and high-speed ADCs powered from noisy SMPS rails. |
| Active discharge circuit | 1 kΩ internal discharge path activated on EN deassertion - reduces VOUT decay time to <1 ms (Figure 37), preventing latch-up in downstream logic. |
| AEC-Q100 qualified | Grade 1 (−40 °C to +125 °C), PPAP-capable - validated for under-hood and instrument cluster deployment without derating. |
| Stable with minimal capacitance | Works with 1 µF X5R/X7R ceramic output caps - cuts BOM cost and PCB area vs. legacy LDOs requiring ≥10 µF tantalum. |
Applications
| Automotive Camera Module | GNSS Receiver Front-End |
|---|---|
|
Use Scenario: Powering CMOS image sensor and ISP in rear-view or surround-view camera. IC Role / Device Role / Timing Role: Primary 2.8 V analog rail regulator with ultra-low noise to prevent fixed-pattern noise and horizontal banding in captured video. Use Value: 10 µVRMS noise ensures >68 dB SNR in 12-bit image pipelines; active discharge prevents ghosting during rapid camera reactivation. |
Use Scenario: Supplying LNA, mixer, and baseband processor in automotive GPS/GLONASS receiver. IC Role / Device Role / Timing Role: Clean 2.8 V bias source rejecting switching noise from nearby 5 V buck converter powering digital core. Use Value: 82 dB PSRR at 1 kHz suppresses 500 kHz–2 MHz ripple from DC-DC converters, maintaining carrier-to-noise ratio (C/N0) >45 dB-Hz. |
| Infotainment Audio Codec | Telematics Cellular Modem RF Section |
|
Use Scenario: Providing reference voltage and analog supply to stereo audio DAC and headphone amplifier. IC Role / Device Role / Timing Role: Low-noise 2.8 V rail isolating sensitive analog audio paths from noisy digital SoC domains. Use Value: Sub-10 µVRMS noise enables THD+N < −95 dB at 1 kHz, meeting premium car audio specifications without additional filtering. |
Use Scenario: Biasing PA driver stages and RF transceivers in LTE/V2X communication modules. IC Role / Device Role / Timing Role: Ultra-stable 2.8 V supply minimizing phase noise degradation in local oscillator paths. Use Value: 85 mV dropout allows operation from degraded 3.3 V bus during cold-crank; AEC-Q100 grade ensures reliability over 15-year vehicle lifecycle. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS7A2028PDQNR | Lower quiescent current (6.5 µA typ.), but only 300 mA PSRR @ 1 kHz (vs. 82 dB); no BYP pin for noise optimization. | Targeted at ultra-low-power IoT sensors, not noise-critical RF/audio; lacks AEC-Q100 qualification. | Select if system prioritizes standby current over noise/PSRR and operates outside automotive temperature range. |
| NCP1117ST28T3G | Higher dropout (1.2 V @ 200 mA), higher noise (>40 µVRMS), no enable or active discharge; SOT-223 package. | General-purpose industrial use only; unsuitable for space-constrained or fast-turnoff automotive modules. | Choose only for cost-sensitive non-automotive designs where noise and transient response are secondary. |
Compared with TPS7A2028PDQNR and NCP1117ST28T3G, the NCV8570BSN28T1G uniquely combines automotive qualification, ultra-low noise via BYP control, and fast active discharge - making it the sole option for AEC-Q100-compliant, noise-sensitive 2.8 V rail generation in modern ADAS and infotainment platforms.
Availability
NCV8570BSN28T1G is available at Aetrix Electronics and suitable for automotive camera modules, GNSS receivers, infotainment audio subsystems, and telematics modems requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for NCV8570BSN28T1G 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 is a global semiconductor supplier delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The NCV8570B series was designed specifically for automotive electronics demanding ultra-low noise, high PSRR, and AEC-Q100 compliance - targeting RF, imaging, and precision analog subsystems in next-generation vehicles.
FAQ
What is the maximum input voltage rating for the NCV8570BSN28T1G?
The NCV8570BSN28T1G has an absolute maximum input voltage rating of 6 V. Operation above this level risks permanent damage. For reliable continuous operation, the recommended input voltage range is 2.5 V to 5.5 V, ensuring proper regulation and thermal margin across the full automotive temperature range.
Does the NCV8570BSN28T1G require an external capacitor on the BYP pin?
Yes, the NCV8570BSN28T1G requires an external capacitor (10–100 nF) between the BYP pin and GND to achieve its specified ultra-low noise performance. Without this capacitor, output noise increases significantly - e.g., from 10 µVRMS to >22 µVRMS at 1.8 V output - due to unfiltered bandgap reference noise.
How does the enable function behave on the NCV8570BSN28T1G?
The NCV8570BSN28T1G features an active-high enable pin (EN) with a guaranteed turn-on threshold ≥1.2 V and turn-off threshold ≤0.4 V. When disabled, quiescent current drops to <1 µA. An internal 5 MΩ pull-down resistor ensures safe default-off behavior if EN is left floating, eliminating need for external pull-down resistors.
Is the NCV8570BSN28T1G pin-compatible with other variants in the NCV8570B family?
Yes, the NCV8570BSN28T1G shares identical TSOP-5 pinout (IN, GND, EN, OUT, BYP) with all other NCV8570B variants (e.g., NCV8570BSN33T1G, NCV8570BSN18T1G). Only the marked output voltage differs; electrical characteristics like PSRR, noise, and dropout remain consistent across the family.
What thermal protection mechanisms does the NCV8570BSN28T1G include?
The NCV8570BSN28T1G integrates thermal shutdown that disables the output when junction temperature exceeds 150 °C (typical), with automatic recovery once temperature falls below 135 °C (typical). This hysteresis prevents oscillation near trip point and protects against sustained overload or poor heatsinking in enclosed automotive enclosures.
NCV8570BSN28T1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- *
- Package/Case:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- -
- Output Type:
- -
- Number of Regulators:
- -
- Voltage - Input (Max):
- -
- Voltage - Output (Min/Fixed):
- -
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- Current - Output:
- -
- Current - Quiescent (Iq):
- -
- Current - Supply (Max):
- -
- PSRR:
- -
- Control Features:
- -
- Protection Features:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
NCV8570BSN28T1G FAQ
1.How can I place an order for NCV8570BSN28T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV8570BSN28T1G 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 NCV8570BSN28T1G reliable?
The price and inventory of NCV8570BSN28T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV8570BSN28T1G is usually 5 days.
3.What payment methods are accepted for NCV8570BSN28T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV8570BSN28T1G transactions.
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4.How is shipping managed for NCV8570BSN28T1G?
NCV8570BSN28T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV8570BSN28T1G 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 NCV8570BSN28T1G?
For technical support, including NCV8570BSN28T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV8570BSN28T1G requirements.
6.How does Aetrix verify that NCV8570BSN28T1G is sourced from the original manufacturer or authorized distributors?
All NCV8570BSN28T1G 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 NCV8570BSN28T1G meets industry standards.
7.What is the process for return or replacement of NCV8570BSN28T1G?
All NCV8570BSN28T1G units undergo pre-shipment inspection (PSI). If there is an issue with NCV8570BSN28T1G, 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 NCV8570BSN28T1G part is unused and in its original packaging.
Return procedure for NCV8570BSN28T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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