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onsemi NCV8570BSN33T1G
- Part No.:
- NCV8570BSN33T1G
- Manufacturer:
- onsemi
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
NCV8570BSN33T1G.pdf
- Description:
- IC REG LINEAR 3.3V 200MA 5TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,354
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Product details
Overview
NCV8570BSN33T1G from onsemi is an automotive-grade 200 mA ultra-low-noise LDO voltage regulator with fixed 3.3 V output, 82 dB PSRR at 1 kHz, 10 µVRMS noise (10 Hz–100 kHz), and 80 mV dropout at 200 mA. It features active discharge, thermal shutdown, current limiting, and operates from 2.5 V to 5.5 V input - designed for RF, audio, and camera power rails in ADAS and infotainment systems.
For engineers reviewing the NCV8570BSN33T1G datasheet, pinout, applications, or equivalent options, this page delivers verified package mapping (TSOP-5), validated pin functions (EN/IN/OUT/BYP/GND), confirmed automotive qualification (AEC-Q100), and real-world design trade-offs between noise suppression and turn-on time when selecting Cnoise.
Technical Context
The NCV8570BSN33T1G uses a PMOS pass transistor architecture enabling low dropout and reverse-current protection via its inherent body diode. Its BYP pin provides direct access to the bandgap reference node, allowing external 10–100 nF capacitors to suppress internal noise sources before regulation.
It integrates logic-level enable control with internal 5 MΩ pull-down, sleep-mode current ≤1 µA, and active discharge through a 1 kΩ internal resistor. Thermal shutdown triggers at 150 °C (reset at 135 °C), and current limit is set at 310 mA (typ) with short-circuit current of 320 mA (typ) at VOUT = 0 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3 V ±2.5% - ensures stable core voltage for 3.3 V microcontrollers and sensors without external feedback. |
| Max Output Current | 200 mA continuous - sufficient for powering RF transceivers, image signal processors, or multiple low-power peripherals. |
| PSRR | 82 dB @ 1 kHz - rejects ripple from noisy DC-DC stages upstream, critical for analog front-ends in GPS or camera modules. |
| Output Noise | 10 µVRMS (10 Hz–100 kHz, VOUT = 1.8 V, Cnoise = 10 nF); 11.9 µVRMS @ 3.3 V - enables clean biasing of low-noise amplifiers and ADC references. |
| Dropout Voltage | 80 mV @ 200 mA (VOUT = 3.3 V) - supports operation down to VIN = 3.38 V, extending battery runtime in 3.6 V Li-ion systems. |
| Quiescent Current | 75 µA @ 200 mA load - minimizes standby power in always-on automotive modules like lane-departure cameras. |
| Enable Threshold | VEN(H) ≥ 1.2 V, VEN(L) ≤ 0.4 V - compatible with 1.8 V/3.3 V GPIOs for precise system-level power sequencing. |
Pinout & Package
NCV8570BSN33T1G is packaged in a Pb-free TSOP-5 (Case 483) measuring 2.9 mm × 1.6 mm × 1.1 mm, optimized for space-constrained automotive PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Input Power Supply | Accepts 2.5–5.5 V input; requires 1 µF ceramic decoupling close to pin to suppress line transients. |
| 2 (GND) | Power Ground | Primary ground return path; must be low-inductance connection to minimize noise coupling into BYP/OUT. |
| 3 (EN) | Logic Enable Input | Active-high control: tie to IN for always-on operation; float disabled by internal 5 MΩ pull-down. |
| 4 (OUT) | Regulated Output | Delivers 3.3 V ±2.5%; stable with ≥1 µF X5R/X7R ceramic output capacitor (ESR < 100 mΩ). |
| 5 (BYP) | Noise Reduction Node | Connects to bandgap reference; 10–100 nF capacitor here reduces integrated output noise by up to 50%. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low output noise | 10 µVRMS (1.8 V version); 11.9 µVRMS @ 3.3 V with 100 nF Cnoise - enables high-SNR signal chains in RF receivers. |
| High PSRR across frequency | 82 dB @ 1 kHz, >63 dB @ 10 kHz - maintains clean output despite switching noise from adjacent DC-DC converters. |
| Active discharge circuit | Internal 1 kΩ discharge path activated on EN deassertion - ensures rapid VOUT decay (< 2 ms typical), preventing latch-up in multi-rail systems. |
| AEC-Q100 qualified | Grade 1 (−40 °C to +125 °C junction), PPAP-capable - certified for engine bay, infotainment, and ADAS ECU deployment. |
| Stable with minimal capacitance | Works with 1 µF ceramic COUT (X5R/X7R) - eliminates need for bulky tantalum or electrolytic caps, reducing board area and cost. |
Applications
| ADAS Camera Power | Automotive Infotainment Audio |
|---|---|
|
Use Scenario: Powering CMOS image sensor and ISP in rear-view or surround-view camera modules. IC Role / Device Role / Timing Role: Primary 3.3 V LDO supplying analog and digital rails for image capture chain. Use Value: 10 µVRMS noise and 82 dB PSRR prevent horizontal banding and SNR degradation in low-light video. |
Use Scenario: Biasing DACs, headphone amplifiers, and audio codecs in head unit systems. IC Role / Device Role / Timing Role: Low-noise post-regulator cleaning switched-mode supply outputs. Use Value: Sub-12 µVRMS output noise preserves dynamic range and THD+N performance in Class AB/D audio paths. |
| GPS/GLONASS RF Front-End | Telematics Control Unit (TCU) |
|
Use Scenario: Powering LNA, mixer, and VCO circuits in satellite navigation receivers. IC Role / Device Role / Timing Role: Dedicated low-noise supply for RF signal chain components. Use Value: High PSRR (>63 dB up to 10 kHz) suppresses DC-DC switching artifacts that cause reciprocal mixing and phase noise. |
Use Scenario: Providing always-on 3.3 V rail for CAN controller, cellular modem, and secure boot logic. IC Role / Device Role / Timing Role: System supervisor LDO with enable control and active discharge for safe power cycling. Use Value: 1 µA disable current and fast discharge prevent residual voltage hold-up during firmware updates or crash recovery. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV73333PDBVR | 300 mA rated, 50 µVRMS noise, no BYP pin, SOT-23-5 package | Lacks dedicated noise-bypass capability; higher noise limits use in RF/audio precision rails | Select when higher current headroom is needed and noise < 15 µVRMS is acceptable |
| TPS7A2033PDQNR | 300 mA, 13 µVRMS, no BYP pin, 1.4 mm × 1.2 mm X2SON-6 | Smaller footprint but no external noise tuning; PSRR peaks at 70 dB @ 100 Hz, drops sharply above 1 kHz | Prefer for space-constrained consumer designs where AEC-Q100 is not required |
Compared with TLV73333PDBVR and TPS7A2033PDQNR, the NCV8570BSN33T1G uniquely combines AEC-Q100 qualification, adjustable noise filtering via BYP, and best-in-class 82 dB PSRR at 1 kHz - making it the only choice for automotive RF and imaging power where spectral purity and reliability are non-negotiable.
Availability
NCV8570BSN33T1G is available at Aetrix Electronics and suitable for automotive ADAS camera modules, infotainment audio subsystems, and telematics control units requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant sourcing.
Supply support for NCV8570BSN33T1G 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 leader focused on energy-efficient innovation for automotive, industrial, cloud, and IoT applications, with deep expertise in power management and signal integrity solutions.
The NCV8570B series was engineered specifically for automotive safety-critical and noise-sensitive subsystems - delivering ultra-low-noise regulation with robust fault protection and extended temperature operation.
FAQ
What is the maximum input voltage rating for the NCV8570BSN33T1G?
The NCV8570BSN33T1G has an absolute maximum input voltage of 6 V. However, its recommended operating input range is 2.5 V to 5.5 V. Exceeding 5.5 V may compromise long-term reliability and thermal performance, especially at high ambient temperatures. The device's dropout behavior and PSRR are characterized within the 2.5–5.5 V range per the official datasheet.
Does the NCV8570BSN33T1G require an external capacitor on the BYP pin?
Yes - the NCV8570BSN33T1G requires a minimum 10 nF ceramic capacitor between BYP and GND to ensure stable operation and avoid turn-on overshoot. Values from 10 nF to 100 nF are supported; larger values reduce output noise (e.g., 100 nF yields ~12 µVRMS at 3.3 V) but increase turn-on time proportionally, as defined by tON ≈ Cnoise × VOUT / 68 µA.
Is the NCV8570BSN33T1G pin-compatible with other variants in the NCV8570B family?
No - the NCV8570BSN33T1G (TSOP-5) is not pin-compatible with the DFN6 variant (e.g., NCV8570BSN33T1G vs. NCV8570BDMT33T1G). While both share identical electrical functionality and pin functions, the TSOP-5 has 5 pins in linear order (IN-GND-EN-OUT-BYP), whereas the DFN6 rearranges them (EN-GND-IN-BYP-GND-OUT) with an exposed pad. PCB layout must match the specific package.
How does the active discharge feature work in the NCV8570BSN33T1G?
When the EN pin is pulled low, the NCV8570BSN33T1G activates an internal discharge transistor tied to a 1 kΩ resistor between OUT and GND. This path rapidly discharges the output capacitor - achieving VOUT < 10% in under 2 ms with a 10 µF COUT. This prevents unintended re-powering of downstream logic and supports safe, sequenced power-down in multi-voltage systems.
What is the thermal shutdown behavior of the NCV8570BSN33T1G?
The NCV8570BSN33T1G disables output when junction temperature reaches 150 °C (typical trip point) and remains off until temperature falls to 135 °C (typical reset point). During shutdown, quiescent current remains below 100 µA. This hysteresis prevents oscillation near the threshold and protects against sustained overloads - but is not a substitute for proper thermal design using the published RJA = 204 °C/W for TSOP-5.
NCV8570BSN33T1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SOT-23-5 Thin, TSOT-23-5
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.185V @ 200mA
- Current - Output:
- 200mA
- Current - Quiescent (Iq):
- 110 µA
- Current - Supply (Max):
- 130 µA
- PSRR:
- 82dB ~ 63dB (1kHz ~ 10kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 5-TSOP
NCV8570BSN33T1G FAQ
1.How can I place an order for NCV8570BSN33T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV8570BSN33T1G 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 NCV8570BSN33T1G reliable?
The price and inventory of NCV8570BSN33T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV8570BSN33T1G is usually 5 days.
3.What payment methods are accepted for NCV8570BSN33T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV8570BSN33T1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV8570BSN33T1G?
NCV8570BSN33T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV8570BSN33T1G 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 NCV8570BSN33T1G?
For technical support, including NCV8570BSN33T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV8570BSN33T1G requirements.
6.How does Aetrix verify that NCV8570BSN33T1G is sourced from the original manufacturer or authorized distributors?
All NCV8570BSN33T1G 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 NCV8570BSN33T1G meets industry standards.
7.What is the process for return or replacement of NCV8570BSN33T1G?
All NCV8570BSN33T1G units undergo pre-shipment inspection (PSI). If there is an issue with NCV8570BSN33T1G, 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 NCV8570BSN33T1G part is unused and in its original packaging.
Return procedure for NCV8570BSN33T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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