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Renesas ISL78301FVEAZ
- Part No.:
- ISL78301FVEAZ
- Manufacturer:
- Renesas
- Package:
- 14-TSSOP (0.173", 4.40mm Width) Exposed Pad
- Datasheet:
-
ISL78301FVEAZ.pdf
- Description:
- IC REG LIN 3.3V 150MA 14HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:434
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Product details
Overview
ISL78301FVEAZ from Renesas Electronics (formerly Intersil) is a fixed 3.3V, AEC-Q100 qualified automotive linear regulator delivering 150mA output current with 18µA quiescent current at no load, low dropout voltage of 295mV at 150mA, and operation down to 3V during cold crank - used for always-on power domains in body control modules and infotainment system standby rails.
For engineers reviewing the ISL78301FVEAZ datasheet, ISL78301FVEAZ pinout, ISL78301FVEAZ application, or ISL78301FVEAZ equivalent, key selection criteria include guaranteed 150mA output under -40°C to +125°C, 40V input tolerance, 2µA shutdown current, thermal shutdown at +165°C, and compatibility with 10µF ceramic output capacitance.
Technical Context
The ISL78301FVEAZ implements a high-voltage PNP-based LDO architecture with internal current limit (175–410mA) and thermal shutdown (165°C trip, 20°C hysteresis). Its enable input accepts TTL/CMOS logic levels up to 40V, allowing direct connection to battery-sensed microcontroller GPIOs without level-shifting.
It maintains stable regulation across 3V–40V input range while sustaining 3.3V ±0.033V output accuracy over full temperature and load (0.1mA–150mA), with PSRR of 55dB at 100Hz and load transient recovery within 5ms under 50mA step changes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3V ±1% (3.267–3.333V) across -40°C to +125°C - ensures reliable MCU I/O and CAN transceiver biasing. |
| Max Output Current | 150mA guaranteed - supports multiple low-power sensors or microcontroller peripherals on single rail. |
| Quiescent Current | 18µA typical at no load - enables <100µA system standby current in always-on domains. |
| Dropout Voltage | 295mV at 150mA - sustains regulation during 12V battery sag to 3.6V minimum input. |
| Input Voltage Range | +3V to +40V - survives cold crank (3V) and load dump (40V) per ISO 7637-2. |
| Shutdown Current | 2µA typical - reduces parasitic drain when host MCU disables EN pin. |
| Thermal Protection | 165°C shutdown with 20°C hysteresis - prevents permanent damage during sustained overload or poor PCB heatsinking. |
Pinout & Package
ISL78301FVEAZ uses a thermally enhanced 14-lead HTSSOP package (M14.173B) with exposed pad soldered to PCB ground plane for low θJC = 5°C/W. The package supports high-reliability automotive mounting and meets IPC/JEDEC reflow standards for Pb-free assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN (Pin 2) | Input voltage supply | Accepts +3V to +40V; requires 0.1µF ceramic decoupling placed adjacent to pin. |
| EN (Pin 7) | Enable control input | Active-high TTL/CMOS-compatible; 1.485V threshold ensures robust noise immunity in vehicle harness environments. |
| GND (Pin 8) | Power ground reference | Primary return path for IN, OUT, and EN; must be connected directly to EPAD ground plane. |
| OUT (Pin 14) | Regulated 3.3V output | Delivers up to 150mA; requires 10µF ceramic capacitor with low-ESR and short ground trace to GND pin. |
| EPAD | Thermal and electrical ground | Exposed copper pad beneath package; must be soldered to ≥100mm² internal/external GND copper area for θJA ≤37°C/W. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for -40°C to +125°C ambient operation - suitable for engine bay and cabin-mounted ECUs without derating. |
| 40V-tolerant EN pin | Eliminates need for external level-shifter or voltage divider when interfacing with 12V/24V battery-sensed MCU GPIOs. |
| Stable with 10µF ceramic output cap | Reduces BOM count and board space vs. traditional tantalum or electrolytic capacitors requiring larger ESR. |
| 5kV HBM ESD rating | Withstands electrostatic discharge events common during automotive module handling and assembly without latch-up or parametric shift. |
| Current limit + thermal shutdown | Provides dual-fault protection: limits output to ~175mA during short-circuit and disables output above 165°C junction temperature. |
Applications
| Body Control Module (BCM) Standby Rail | Infotainment System Memory Backup |
|---|---|
Use Scenario: Powering real-time clock (RTC), CAN controller, and wake-up interrupt circuitry during vehicle sleep mode. IC Role / Device Role / Timing Role: Always-on 3.3V LDO providing regulated bias for low-power logic and communication peripherals. Use Value: 18µA quiescent current ensures total BCM standby draw remains below 50µA, meeting OEM battery drain specifications. | Use Scenario: Maintaining SRAM and configuration registers in head unit during ignition-off periods. IC Role / Device Role / Timing Role: Fixed-output LDO supplying clean 3.3V to non-volatile memory and microcontroller retention domains. Use Value: 295mV dropout enables continued operation even as battery sags to 3.6V during extended parking. |
| Advanced Driver Assistance Systems (ADAS) Camera ECU | Telematics Control Unit (TCU) GPS Module |
Use Scenario: Powering image sensor interface and low-power microcontroller in rear-view camera module. IC Role / Device Role / Timing Role: Primary 3.3V supply for always-listening vision processing subsystem with cold-crank resilience. Use Value: Operation down to 3V input allows uninterrupted camera boot during engine start, critical for safety compliance. | Use Scenario: Supplying 3.3V to GPS baseband IC and GNSS RF front-end during vehicle motion and stop/start cycles. IC Role / Device Role / Timing Role: High-reliability LDO delivering stable voltage to timing-critical GNSS acquisition circuitry. Use Value: 55dB PSRR at 100Hz suppresses alternator ripple, improving time-to-first-fix and position accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV73333PDBVR | Lower max input (6V), lower IQ (4.5µA), smaller SOT-23-5 package, no AEC-Q100 qualification. | Suitable only for post-regulated 5V domains; not rated for direct battery connection or automotive temperature range. | Select only for non-automotive, low-current, space-constrained designs where 40V tolerance and AEC-Q100 are unnecessary. |
| NCP1117ST33T3G | Higher IQ (6mA), higher dropout (1.2V at 800mA), TO-220/SOT-223 package, AEC-Q100 Grade 3 (–40°C to +85°C). | Limited to cabin-located modules; cannot support cold-crank or load-dump conditions due to 16V max input. | Choose only for cost-sensitive industrial applications where 3.3V/150mA is needed but automotive-grade reliability is not required. |
Compared with TLV73333PDBVR and NCP1117ST33T3G, ISL78301FVEAZ uniquely combines 40V input tolerance, AEC-Q100 Grade 1 qualification, 18µA quiescent current, and 3.3V fixed output in a thermally optimized HTSSOP - making it the only option qualified for direct-battery, always-on automotive use cases.
Availability
ISL78301FVEAZ is available at Aetrix Electronics and suitable for automotive body electronics, ADAS camera modules, and telematics systems requiring stable component supply across extended temperature and harsh electrical environments.
Supply support for ISL78301FVEAZ 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
Renesas Electronics Corporation is a global semiconductor leader delivering trusted embedded design innovation, with core expertise in microcontrollers, analog power, and automotive SoCs.
The ISL78301FVEAZ belongs to Renesas' automotive-qualified linear regulator product line, designed specifically for ultra-low-power, high-voltage "always-on" domains in modern E/E architectures.
FAQ
What is the maximum input voltage rating for ISL78301FVEAZ?
The ISL78301FVEAZ has an absolute maximum input voltage rating of +45V, with recommended operating range from +3V to +40V. This allows it to withstand automotive load-dump transients per ISO 7637-2 and remain functional during cold-crank conditions down to 3V. The device's 40V tolerance is confirmed in both Absolute Maximum Ratings and Recommended Operating Conditions sections of the FN6705 datasheet.
Does ISL78301FVEAZ require an external resistor network to set output voltage?
No, ISL78301FVEAZ is the fixed 3.3V output version and does not require external resistors. Unlike the adjustable ISL78301FVECZ variant, the ISL78301FVEAZ integrates internal feedback and delivers 3.3V ±1% across temperature and load. Pin 12 (ADJ/NC) is unused and may be left floating or tied to GND per datasheet guidance.
What thermal performance can be expected from ISL78301FVEAZ in a standard PCB layout?
With the EPAD soldered to a ≥100mm² internal GND plane, ISL78301FVEAZ achieves θJA ≈ 37°C/W and θJC = 5°C/W. At 150mA output into 3.3V with 14V input, power dissipation is ~1.6W; junction temperature rise above ambient would be ~59°C - well within the +125°C max ambient and +150°C max junction limits. Layout adherence to Figure 13 and Board Layout Recommendations is essential for this performance.
Is ISL78301FVEAZ compatible with ceramic output capacitors?
Yes, ISL78301FVEAZ is explicitly characterized and stabilized for use with 10µF ceramic output capacitors (X5R/X7R), as stated in Features and Application Information sections. Unlike older LDOs requiring high-ESR tantalum or aluminum electrolytics, this eliminates ESR-related instability risks and reduces footprint and cost. The 0.1µF ceramic input capacitor is also mandatory.
What protection features are integrated into ISL78301FVEAZ?
ISL78301FVEAZ integrates three core protections: (1) current limit (175–410mA), (2) thermal shutdown at +165°C with +20°C hysteresis, and (3) 5kV HBM ESD rating. These are fully documented in Electrical Specifications and Functional Description. No external components are needed to implement these protections - they operate autonomously during fault conditions.
ISL78301FVEAZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width) Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 40V
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.525V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 28 µA
- Current - Supply (Max):
- 142 µA
- PSRR:
- 55dB (100Hz)
- 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:
- 14-HTSSOP
ISL78301FVEAZ FAQ
1.How can I place an order for ISL78301FVEAZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL78301FVEAZ 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 ISL78301FVEAZ reliable?
The price and inventory of ISL78301FVEAZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL78301FVEAZ is usually 5 days.
3.What payment methods are accepted for ISL78301FVEAZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL78301FVEAZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL78301FVEAZ?
ISL78301FVEAZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL78301FVEAZ 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 ISL78301FVEAZ?
For technical support, including ISL78301FVEAZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL78301FVEAZ requirements.
6.How does Aetrix verify that ISL78301FVEAZ is sourced from the original manufacturer or authorized distributors?
All ISL78301FVEAZ 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 ISL78301FVEAZ meets industry standards.
7.What is the process for return or replacement of ISL78301FVEAZ?
All ISL78301FVEAZ units undergo pre-shipment inspection (PSI). If there is an issue with ISL78301FVEAZ, 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 ISL78301FVEAZ part is unused and in its original packaging.
Return procedure for ISL78301FVEAZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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