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onsemi NCV59801CML120TCG
- Part No.:
- NCV59801CML120TCG
- Manufacturer:
- onsemi
- Package:
- 8-VDFN Exposed Pad
- Datasheet:
-
NCV59801CML120TCG.pdf
- Description:
- LDO, 1A, AUTOMOTIVE, LOW NOISE,
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
NCV59801CML120TCG from onsemi is a 1 A automotive-grade LDO regulator with fixed 1.2 V output, ±0.7% initial accuracy at 25°C, 120 mV typical dropout at 1 A (for 3.3 V variant), 85 dB PSRR at 1 kHz, and integrated Power Good open-collector output. It delivers low noise (10 µVRMS for fixed versions), operates from 1.6 V to 5.5 V input, and supports stable regulation with 4.7 µF ceramic capacitors - ideal for powering RF and analog circuitry in vehicle infotainment systems.
For engineers reviewing the NCV59801CML120TCG datasheet, pinout, applications, or equivalent options, key selection criteria include its AEC-Q100 qualification, controlled 5 mV/s output slew rate, active output discharge, ±1% output accuracy over load/temperature (−40°C to +125°C), and DFNW8 3 mm × 3 mm package with exposed thermal pad.
Technical Context
The NCV59801CML120TCG implements a high-PSRR, low-noise linear regulation architecture with internal reference (0.6 V), precision error amplifier, and current-limit protection. Its Power Good output uses an open-drain comparator with 95% rising / 90% falling thresholds and 9 µs blanking time to reject transients.
It features active output discharge (250 Ω typical) during shutdown, controlled startup slew rate (5 mV/s), and thermal shutdown at 165°C with 15°C hysteresis. The device is optimized for stability with low-ESR ceramic capacitors and requires no minimum ESR for COUT.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.2 V - eliminates external feedback resistors and reduces layout sensitivity in space-constrained automotive modules. |
| Output Accuracy | ±0.7% at 25°C; ±1% over −40°C to +125°C - ensures reliable voltage margin for downstream 1.2 V logic and analog rails. |
| Dropout Voltage | 120 mV typ. at 1 A (3.3 V variant); 211 mV max. at 1 A (1.5 V variant) - enables operation with minimal headroom in low-voltage battery domains. |
| PSRR | 85 dB at 1 kHz, 75 dB at 10 kHz - suppresses switching noise from adjacent DC-DC converters in mixed-signal automotive ECUs. |
| Quiescent Current | 35 µA typ., 55 µA max. - supports ultra-low-power always-on functions such as CAN wake-up receivers. |
| Power Good Output | Open-collector with 95%/90% VOUT thresholds and 100 mV saturation voltage at 1 mA - enables precise power sequencing with MCU GPIO inputs. |
| Slew Rate | 5 mV/s - limits inrush current during startup, reducing stress on input capacitors and upstream power sources. |
| Thermal Resistance | RJA = 44.4°C/W (DFNW8); RJC(bot) = 6.9°C/W - enables >1 W continuous dissipation with proper PCB copper pour under natural convection. |
Pinout & Package
NCV59801CML120TCG is housed in a thermally enhanced DFNW8 3 mm × 3 mm × 0.9 mm package (Case 507AD) with wettable flanks and an exposed thermal pad. The pad must be soldered to a PCB ground plane for optimal thermal performance and electrical stability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 - OUT | Regulated output | Delivers 1.2 V to load; requires 4.7 µF ceramic capacitor directly at pin for stability and transient response. |
| 7, 8 - IN | Input supply | Accepts 1.6–5.5 V; must be decoupled with ≥4.7 µF X5R/X7R ceramic capacitor close to pin. |
| 5 - EN | Enable control | Active-high logic input; asserts regulator when VEN > 1 V; disables with <0.4 V, reducing IQ to 0.1 µA. |
| 6 - PG | Power Good indicator | Open-drain output; sinks up to 10 mA; requires external pull-up (10 kΩ–100 kΩ) to VOUT or VIN for sequencing. |
| 4 - GND | Ground reference | Common return path for IN, OUT, EN, and PG; must be low-impedance connection to system ground plane. |
| 3 - SNS | Sense feedback | Connected directly to OUT on PCB for fixed-output variants; enables accurate regulation independent of trace IR drop. |
| PAD - Exposed Pad | Thermal & electrical ground | Must be soldered to solid copper ground plane; provides primary thermal path and reduces junction-to-board resistance to 6.3°C/W. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 qualified | Grade 1 (−40°C to +125°C ambient), PPAP-capable - certified for safety-critical automotive applications including telematics and clusters. |
| Low-noise regulation | 10 µVRMS (10 Hz–100 kHz) - preserves signal integrity in RF front-ends and high-resolution ADC references. |
| High PSRR | 85 dB @ 1 kHz, 40 dB @ 1 MHz - rejects ripple from buck converters and digital switching noise without additional filtering. |
| Controlled startup | 5 mV/s output slew rate - prevents inrush-induced brownouts and avoids false triggering of downstream reset circuits. |
| Active output discharge | 250 Ω typical resistance - rapidly discharges output capacitance upon disable, enabling fast power-state transitions. |
| Stable with small ceramics | Works with ≥2.2 µF X5R/X7R capacitors; 4.7 µF recommended - eliminates need for bulky tantalum or aluminum electrolytics. |
Applications
| Automotive Infotainment Core Supply | In-Vehicle Networking (IVN) PHY Bias Rail |
|---|---|
Use Scenario: Powers SoC core voltage (1.2 V) in head-unit processors requiring tight regulation and low noise. IC Role / Device Role / Timing Role: Primary low-dropout voltage regulator delivering clean, sequenced 1.2 V rail with Power Good handshake to SoC. Use Value: ±1% accuracy and 85 dB PSRR ensure stable operation under battery voltage sag and EMI-rich cabin environments. |
Use Scenario: Supplies bias voltage to Ethernet PHY or CAN transceiver analog sections in gateway ECUs. IC Role / Device Role / Timing Role: Low-noise, high-PSRR LDO providing isolated analog supply independent of noisy digital domains. Use Value: 10 µVRMS noise and 5 mV/s slew rate prevent jitter accumulation and enable reliable high-speed data link initialization. |
| Telematics Module GPS/LTE RF Front-End | Digital Cluster Display Backlight Driver Bias |
Use Scenario: Powers LNA, mixer, and VCO bias circuits in cellular/GNSS RF modules where supply noise degrades SNR. IC Role / Device Role / Timing Role: Ultra-low-noise LDO supplying critical RF analog blocks with controlled startup and fast discharge. Use Value: 10 µVRMS noise floor and active discharge reduce phase noise and support rapid RF subsystem power cycling. |
Use Scenario: Supplies gate-drive or reference voltage to LED driver ICs in TFT-LCD instrument clusters. IC Role / Device Role / Timing Role: Precision 1.2 V source for current-sense amplifiers and PWM comparators in backlight control loops. Use Value: ±0.7% initial accuracy and low load regulation (2 mV) maintain consistent brightness across temperature and load variations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NCV59801CML120TBG | Same 1.2 V fixed output, identical DFNW8 package, but with 10 mV/s slew rate ('D' option) instead of 5 mV/s ('C' option). | Higher slew rate increases inrush current; less suitable for systems with strict input capacitance or upstream current limits. | Select NCV59801CML120TBG only if faster startup is required and input supply can sustain higher dI/dt. |
| TLV73312PDBVR | 1.2 V fixed LDO, 300 mA output, SOT-23-5 package, 25 µA IQ, no Power Good or active discharge. | Limited to lower-current digital loads; lacks automotive qualification, sequencing capability, and thermal robustness. | Use TLV73312PDBVR for non-automotive, cost-sensitive, sub-300 mA applications where PG and discharge are unnecessary. |
Compared with NCV59801CML120TBG, the NCV59801CML120TCG offers slower, safer startup for sensitive RF loads; compared with TLV73312PDBVR, it delivers 3.3× higher current, AEC-Q100 compliance, Power Good signaling, and active discharge - essential for functional safety and power sequencing in modern vehicle electronics.
Availability
NCV59801CML120TCG is available at Aetrix Electronics and suitable for automotive infotainment, in-vehicle networking, and telematics applications requiring stable component supply, AEC-Q100 compliance, and long-term lifecycle support.
Supply support for NCV59801CML120TCG 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, high-performance silicon solutions for automotive, industrial, cloud, and IoT markets.
The NCV59801 series is part of onsemi's automotive power management portfolio, designed specifically for RF-sensitive and safety-critical vehicle subsystems requiring ultra-low noise, high PSRR, and robust thermal performance.
FAQ
What is the output voltage tolerance of the NCV59801CML120TCG over temperature and load?
The NCV59801CML120TCG maintains ±1% output voltage accuracy across −40°C to +125°C junction temperature and 0.1 mA to 1 A load current. At 25°C, initial accuracy is tighter at ±0.7%. This ensures reliable operation for 1.2 V digital cores and analog references in automotive environments where thermal and load variation is significant. The NCV59801CML120TCG achieves this via precision bandgap reference and low-drift error amplifier design.
Does the NCV59801CML120TCG require an external resistor divider for feedback?
No - the NCV59801CML120TCG is a fixed-output 1.2 V variant and does not use the FB pin. Instead, it uses the SNS (sense) pin, which must be connected directly to the OUT pin on the PCB to compensate for trace voltage drop. No external resistors are needed, simplifying layout and improving accuracy. The NCV59801CML120TCG is functionally distinct from adjustable versions like NCV59801CMLADJTCG, which do require FB-based feedback networks.
What is the purpose of the exposed thermal pad on the NCV59801CML120TCG package?
The exposed thermal pad on the NCV59801CML120TCG (DFNW8 Case 507AD) serves two critical functions: it provides the primary thermal conduction path from die to PCB (RJC(bot) = 6.9°C/W), enabling >1 W power dissipation, and acts as the electrical ground reference for internal circuitry. It must be soldered to a dedicated PCB ground plane with adequate copper area - failure to do so risks thermal runaway and degraded PSRR/noise performance. The NCV59801CML120TCG datasheet specifies minimum solder stencil aperture and paste volume for reliable attachment.
How does the Power Good (PG) output of the NCV59801CML120TCG behave during enable/disable transitions?
The NCV59801CML120TCG PG output is an open-drain signal that goes low when VOUT reaches ≥95% of nominal (1.14 V) and remains low until VOUT falls below 90% (1.08 V). During disable (EN < 0.4 V), PG is internally disabled and floats - its state is defined solely by the external pull-up resistor. To ensure correct sequencing, the pull-up should connect to VOUT so PG reflects true output status. The NCV59801CML120TCG includes 9 µs blanking time to ignore short transients, preventing false assertions.
Can the NCV59801CML120TCG be used with input voltages below 1.6 V?
No - the absolute minimum input voltage for the NCV59801CML120TCG is 1.6 V per the Absolute Maximum Ratings table. Operation below this violates the safe operating area and may cause regulation failure or damage. The under-voltage lockout (UVLO) threshold is 1.5 V, meaning the device will not start up if VIN rises to just above 1.5 V. For battery-powered automotive systems, this ensures the NCV59801CML120TCG remains inactive during cold-crank events (<6 V) or deep discharge conditions. Always maintain VIN ≥1.6 V for guaranteed functionality.
NCV59801CML120TCG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 8-VDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1.2V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- Current - Output:
- 1A
- Current - Quiescent (Iq):
- 55 µA
- Current - Supply (Max):
- -
- PSRR:
- -
- Control Features:
- Enable, Soft Start
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 8-DFNW (3x3)
NCV59801CML120TCG FAQ
1.How can I place an order for NCV59801CML120TCG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV59801CML120TCG 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 NCV59801CML120TCG reliable?
The price and inventory of NCV59801CML120TCG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV59801CML120TCG is usually 5 days.
3.What payment methods are accepted for NCV59801CML120TCG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV59801CML120TCG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV59801CML120TCG?
NCV59801CML120TCG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV59801CML120TCG 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 NCV59801CML120TCG?
For technical support, including NCV59801CML120TCG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV59801CML120TCG requirements.
6.How does Aetrix verify that NCV59801CML120TCG is sourced from the original manufacturer or authorized distributors?
All NCV59801CML120TCG 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 NCV59801CML120TCG meets industry standards.
7.What is the process for return or replacement of NCV59801CML120TCG?
All NCV59801CML120TCG units undergo pre-shipment inspection (PSI). If there is an issue with NCV59801CML120TCG, 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 NCV59801CML120TCG part is unused and in its original packaging.
Return procedure for NCV59801CML120TCG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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