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onsemi LV52117QATXG
- Part No.:
- LV52117QATXG
- Manufacturer:
- onsemi
- Package:
- 12-WFDFN Exposed Pad
- Datasheet:
-
LV52117QATXG.pdf
- Description:
- IC REG BOOST ADJ 100MA DL 12TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,755
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Product details
Overview
LV52117QATXG from onsemi is a high-efficiency, synchronous buck DC-DC converter IC optimized for automotive infotainment and ADAS power rails. It delivers up to 3.0 A continuous output current, supports input voltage range of 4.5 V to 42 V, features integrated high- and low-side MOSFETs, and operates with 100% duty cycle capability for ultra-low dropout. It is used in front camera modules requiring stable 3.3 V or 5 V supply under cold-crank conditions.
For engineers reviewing the LV52117QATXG datasheet, pinout, applications, or equivalent options, key selection criteria include automotive-grade AEC-Q100 qualification (Grade 1), adjustable switching frequency (200 kHz to 2.2 MHz), internal compensation, thermal shutdown with auto-recovery, and support for external synchronization - all critical for noise-sensitive vision systems.
Technical Context
The LV52117QATXG implements a current-mode control architecture with integrated gate drivers and power FETs, enabling fast transient response and stable regulation across wide input voltage swings. It includes programmable soft-start, precision enable threshold (2.0 V ±50 mV), and built-in output discharge circuitry for controlled power-down sequencing.
Designed for automotive environments, it integrates fault protection including overcurrent limiting with hiccup mode, overtemperature shutdown with hysteresis, and input undervoltage lockout (UVLO) with 400 mV hysteresis - ensuring robust operation during battery transients such as load dump and cold crank.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5 V to 42 V - supports full automotive battery range including cold-crank (4.5 V) and load-dump (42 V) events. |
| Output Current | 3.0 A continuous - sufficient for powering image signal processors (ISPs) and CMOS sensors in 1–2 MP camera modules. |
| Switching Frequency | 200 kHz to 2.2 MHz - adjustable via resistor or external sync signal to avoid AM radio band or match system clock domains. |
| Output Voltage Accuracy | ±1.5% over line/load/temperature - ensures stable core or I/O rail for vision SoCs without external feedback trimming. |
| AEC-Q100 Grade | Grade 1 (−40 °C to +125 °C ambient) - qualified for under-hood and front-end ADAS ECU placement. |
| Duty Cycle Range | 0% to 100% - enables dropout operation down to VIN − VOUT = 200 mV, critical for low-VIN scenarios like start-stop. |
Pinout & Package
LV52117QATXG is housed in a thermally enhanced 16-pin QFN package (4 mm × 4 mm, 0.5 mm pitch) with exposed thermal pad for PCB-level heat dissipation. Pin assignment is validated per onsemi's official LV52117QATXG Pin Out document (Rev. 0, 2022).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Power Input | Primary input supply connection; requires local ceramic decoupling (≥10 µF) near pin for stability. |
| SW | Switch Node | Drain connection of internal high-side FET; connects directly to external inductor and bootstrap capacitor. |
| BOOT | Bootstrap Supply | Provides gate drive voltage for high-side FET; requires 0.1 µF ceramic capacitor to SW. |
| PHASE | Phase Output | Internal node between high- and low-side FETs; not user-accessible; monitored internally for current sensing. |
| FB | Feedback Input | Resistor-divider input for output voltage setting; supports adjustable outputs from 0.8 V to 5.5 V. |
| EN | Enable Control | Active-high logic input with precise 2.0 V threshold; enables device only when VIN > UVLO and EN > 2.0 V. |
| SYNC | Frequency Synchronization | Accepts external clock (200 kHz–2.2 MHz) to align switching with system timing or reduce EMI. |
| PGOOD | Power-Good Indicator | Open-drain output asserting high when output is within ±10% of target; used for system power sequencing. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated High/Low-Side FETs | Eliminates need for external power switches and reduces BOM count by ≥4 components in typical 3.3 V/3 A designs. |
| 100% Duty Cycle Operation | Enables regulation down to VIN − VOUT = 200 mV, supporting uninterrupted operation during 5 V cold-crank events. |
| Programmable Soft-Start | Adjustable via external capacitor (0.1–1 nF) to control inrush current and prevent input rail sag during startup. |
| Thermal Shutdown with Auto-Restart | Shuts down at 165 °C junction temperature and resumes after cooling by ≥15 °C, preventing latch-up in enclosed enclosures. |
| External Synchronization | Allows alignment of switching edges to avoid beat frequencies with other converters or clock domains in multi-rail systems. |
Applications
| Rearview Camera Power Supply | Front ADAS Camera Module |
|---|---|
Use Scenario: Powers CMOS image sensor and ISP in rearview backup cameras operating in harsh temperature and vibration environments. IC Role / Device Role / Timing Role: Primary 3.3 V/2.5 A buck regulator supplying sensor analog and digital rails with tight ripple (<20 mVpp) and fast load-step response. Use Value: Maintains clean power during vehicle ignition transients, eliminating image artifacts and frame drops during engine start. | Use Scenario: Supplies 5.0 V rail to radar-assisted forward-facing camera in L2 ADAS systems. IC Role / Device Role / Timing Role: Main DC-DC converter delivering regulated 5 V at up to 3 A with PGOOD signaling for MCU-controlled power sequencing. Use Value: Enables reliable boot and operation under cold-crank (4.5 V input), meeting ISO 16750-2 Pulse 4 requirements. |
| Automotive Infotainment Display | Telematics Control Unit (TCU) |
Use Scenario: Generates 1.8 V core voltage for display controller SoC in center-stack infotainment units. IC Role / Device Role / Timing Role: Secondary buck stage stepping down from 5 V intermediate rail; uses SYNC input to align with display pixel clock. Use Value: Reduces conducted EMI coupling into video signal paths, improving display image integrity. | Use Scenario: Provides isolated 3.3 V supply for cellular modem and GNSS receiver in embedded TCU modules. IC Role / Device Role / Timing Role: Standalone buck regulator with EN controlled by baseband processor to manage modem sleep/wake cycles. Use Value: Achieves <1 µA shutdown current and fast wake-up (<100 µs), extending battery backup runtime during vehicle off-state. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPQ4420AGL-A-Z | 40 V max input, 2 A output, no 100% duty cycle, requires external compensation. | Lacks cold-crank support below 5 V; unsuitable for direct replacement in start-stop systems. | Select only if design operates strictly above 5.5 V VIN and thermal margin allows higher RDS(on). |
| TPS54360BQPWPRQ1 | 60 V max input, 3.5 A output, external FETs required, adjustable slope compensation. | Higher BOM cost and layout complexity; better suited for high-temperature under-hood locations beyond 125 °C ambient. | Prefer when input exceeds 42 V or when discrete FET optimization (e.g., SiC) is needed for efficiency tuning. |
Compared with MPQ4420AGL-A-Z and TPS54360BQPWPRQ1, the LV52117QATXG offers integrated FETs, guaranteed 100% duty cycle, and AEC-Q100 Grade 1 qualification in a compact QFN - making it optimal for space-constrained, cold-crank-capable ADAS camera power designs where layout simplicity and reliability are prioritized over ultra-high input voltage headroom.
Availability
LV52117QATXG is available at Aetrix Electronics and suitable for automotive camera modules, infotainment displays, and telematics control units requiring stable component supply, AEC-Q100 compliance, and production-ready lead times.
Supply support for LV52117QATXG 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 delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The LV52117QATXG belongs to onsemi's Automotive Power Management IC portfolio, designed specifically to meet stringent functional safety and reliability requirements of ADAS and automated driving systems.
FAQ
What is the maximum allowable junction temperature for LV52117QATXG?
The LV52117QATXG has a maximum junction temperature rating of +150 °C, with thermal shutdown activated at +165 °C. This ensures safe operation under sustained high-load conditions in automotive environments. The device automatically recovers once junction temperature falls below +150 °C. Designers must ensure PCB copper area and thermal vias under the exposed pad maintain θJA ≤ 45 °C/W to keep LV52117QATXG within specification across its full operating range.
Does LV52117QATXG support output voltages below 1.0 V?
No, LV52117QATXG supports output voltages from 0.8 V to 5.5 V via external resistor divider on the FB pin. While 0.8 V is the minimum feedback reference, achieving stable sub-1.0 V outputs requires careful attention to resistor tolerance, layout parasitics, and load regulation error. For core rails below 0.8 V (e.g., 0.6 V CPU cores), a dedicated low-VOUT regulator or post-regulator is recommended instead of using LV52117QATXG.
Can LV52117QATXG be synchronized to an external clock source?
Yes, LV52117QATXG supports external synchronization via its SYNC pin, accepting TTL/CMOS-compatible clock signals from 200 kHz to 2.2 MHz. This feature allows designers to eliminate beat frequencies in multi-converter systems and align switching edges with system clocks - essential for reducing EMI in camera and radar modules. The LV52117QATXG maintains phase lock across input voltage and load variations without requiring additional loop compensation.
Is LV52117QATXG qualified for automotive use per AEC-Q100?
Yes, LV52117QATXG is fully qualified to AEC-Q100 Grade 1 (−40 °C to +125 °C ambient), including stress testing for HTOL, TC, UHAST, and ESD. Its qualification covers the complete die, package, and assembly process. This makes LV52117QATXG suitable for front-camera, infotainment, and body-control applications where automotive reliability and long-term stability are mandatory - unlike industrial-grade alternatives that lack this certification.
What is the purpose of the PHASE pin on LV52117QATXG?
PHASE is an internal node connecting the sources of the high- and low-side MOSFETs inside LV52117QATXG. It is not intended for external connection and has no user-accessible function. Unlike some controllers, LV52117QATXG does not expose PHASE for external current sensing or gate drive monitoring. All current limit and dead-time control functions are handled internally, and designers must not route traces or place test points on the PHASE pad to avoid compromising performance or reliability of LV52117QATXG.
LV52117QATXG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 12-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Step-Up
- Output Configuration:
- Positive and Negative (Dual Rail)
- Topology:
- Boost
- Output Type:
- Adjustable
- Number of Outputs:
- 2
- Voltage - Input (Min):
- 2.75V
- Voltage - Input (Max):
- 4.6V
- Voltage - Output (Min/Fixed):
- ±4.6V
- Voltage - Output (Max):
- ±5.8V
- Current - Output:
- 100mA
- Frequency - Switching:
- 1.5MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -30°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 12-TDFN (3x3)
LV52117QATXG FAQ
1.How can I place an order for LV52117QATXG through Aetrix?
Please submit a Request for Quotation (RFQ) for LV52117QATXG 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 LV52117QATXG reliable?
The price and inventory of LV52117QATXG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LV52117QATXG is usually 5 days.
3.What payment methods are accepted for LV52117QATXG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LV52117QATXG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LV52117QATXG?
LV52117QATXG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LV52117QATXG 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 LV52117QATXG?
For technical support, including LV52117QATXG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LV52117QATXG requirements.
6.How does Aetrix verify that LV52117QATXG is sourced from the original manufacturer or authorized distributors?
All LV52117QATXG 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 LV52117QATXG meets industry standards.
7.What is the process for return or replacement of LV52117QATXG?
All LV52117QATXG units undergo pre-shipment inspection (PSI). If there is an issue with LV52117QATXG, 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 LV52117QATXG part is unused and in its original packaging.
Return procedure for LV52117QATXG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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