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Renesas ISL78219ARTZ-T
- Part No.:
- ISL78219ARTZ-T
- Manufacturer:
- Renesas
- Package:
- -
- Datasheet:
-
ISL78219ARTZ-T.pdf
- Description:
- IC REG AUTO GRADE 2 STEP-UP
- Quantity:
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Inventory:4,099
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Product details
Overview
ISL78219ARTZ-T from Renesas Electronics is an automotive-grade non-synchronous boost regulator with integrated 4.0A/120mΩ low-side MOSFET, 640kHz or 1.22MHz selectable switching frequency, 2.3V–6.0V input range, and AEC-Q100 Grade 2 qualification (−40°C to +105°C). It delivers up to 24V output in satellite camera power supplies and auxiliary fan drivers.
For engineers reviewing the ISL78219ARTZ-T datasheet, ISL78219ARTZ-T pinout, ISL78219ARTZ-T application, or ISL78219ARTZ-T equivalent, key selection considerations include its dual-frequency PWM control, external compensation flexibility for ceramic capacitor compatibility, <1µA shutdown current, thermal protection, and TDFN-10 package with 0.8mm max height.
Technical Context
The ISL78219ARTZ-T uses current-mode PWM control with internal transconductance error amplifier (70–250 µA/V), fixed-frequency oscillator, and fast current-sense loop-eliminating need for current-loop compensation. Its voltage feedback loop requires external RC network on COMP pin for stability and transient response tuning.
It implements a constant-on-time architecture variant with duty-cycle limits of 85–92% at 640kHz and 85–90% at 1.22MHz, enabling high step-up ratios while maintaining stability across 2.3V–6.0V input and 1.1×VIN–24V output ranges. EN and FREQ pins provide digital enable/disable and frequency selection without external logic.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.3V to 6.0V - supports wide automotive battery range including cold-crank conditions down to 2.3V. |
| Output Voltage Range | 1.1 × VIN to 24V - enables flexible rail generation from low-voltage sources (e.g., 3.3V → 12.3V for camera sensors). |
| Switching Frequency | 640kHz or 1.22MHz - selectable via FREQ pin; higher frequency allows smaller inductors and faster load transient response. |
| Integrated Switch | 4.0A, 120mΩ low-side MOSFET - eliminates external switch, reduces BOM count, and sustains >90% efficiency at 5VIN/12VOUT @ 0.5A. |
| Shutdown Current | <1µA - enables ultra-low-power standby in always-on automotive subsystems like antenna bias supplies. |
| Feedback Reference | 1.24V ±2% - precise reference enables accurate output regulation using standard resistor dividers (e.g., R1=86.6kΩ, R2=10kΩ for 12.3V). |
| Ambient Temp Range | −40°C to +105°C - meets AEC-Q100 Grade 2 requirements for under-hood and cabin-mounted electronics. |
Pinout & Package
ISL78219ARTZ-T is housed in a 10-lead TDFN package (L10.3x3B) with exposed thermal pad, 3.0mm × 2.38mm footprint, and maximum height of 0.8mm - optimized for space-constrained automotive modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - COMP | Error amplifier output | Connect external RC network to set loop compensation zero/pole; determines stability and transient response. |
| 2 - FB | Voltage feedback input | Senses divided output voltage; internal 1.24V reference sets regulated VOUT = 1.24V × (1 + R1/R2). |
| 3 - EN | Enable control | Logic-high (>1.5V) enables regulator; logic-low (<0.5V) disables with <1µA quiescent current. |
| 4,5 - GND | Power ground | Common return path for IC core, switch, and compensation network; must connect to low-impedance PCB ground plane. |
| 6,7 - LX | Switch node | Drain of internal MOSFET; connects to inductor and Schottky diode anode; carries high di/dt switching current. |
| 8 - VIN | Analog supply input | Primary power input (2.3–6.0V); requires local 0.1µF ceramic bypass capacitor for noise suppression. |
| 9 - FREQ | Frequency select | Ground = 640kHz; tied to VIN = 1.22MHz - no external clock required; sets ripple frequency and inductor size. |
| 10 - SS | Soft-start control | Internal 4.5µA current source charges external capacitor; controls output voltage slew rate and peak inductor current ramp-up. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 4.0A low-rDS(ON) MOSFET | Reduces external component count and PCB area; eliminates gate drive design complexity and layout sensitivity. |
| Selectably high-frequency PWM | 640kHz/1.22MHz operation enables use of ≤10µH inductors and <22µF ceramic output capacitors - shrinking total solution size. |
| External compensation network | COMP pin allows full control over loop bandwidth and phase margin - critical for stable operation with low-ESR ceramic caps. |
| Adjustable soft-start | SS pin capacitor sets output voltage rise time and limits inrush current - prevents input voltage droop during startup. |
| AEC-Q100 Grade 2 qualification | Validated for −40°C to +105°C ambient operation with thermal shutdown at 150°C - suitable for engine bay and infotainment systems. |
Applications
| Satellite Camera Systems | Auxiliary Cooling Fans |
|---|---|
Use Scenario: Powering CMOS image sensors requiring stable 12V bias from 3.3V or 5V vehicle bus. IC Role / Device Role / Timing Role: Non-synchronous boost converter generating regulated 12.3V output with <0.3% load regulation. Use Value: High efficiency (>93% at 0.5A) minimizes thermal dissipation in sealed camera housings; 0.8mm TDFN package fits tight board real estate. |
Use Scenario: Driving 12V DC brushless fans from 5V or 12V battery rails in HVAC or powertrain cooling modules. IC Role / Device Role / Timing Role: Step-up regulator delivering up to 1A output with adjustable soft-start to prevent fan stall during cold start. Use Value: Dual-frequency selection allows optimization: 640kHz for lower EMI in fan motor circuits; 1.22MHz for compact filter design near fan connectors. |
| Antenna Bias Supplies | Microphone Power Rails |
Use Scenario: Providing 5V–12V bias to active GPS/GNSS antennas in automotive telematics units. IC Role / Device Role / Timing Role: Low-noise boost regulator with <1µA shutdown current enabling always-on antenna readiness. Use Value: Ultra-low quiescent current extends battery backup runtime; thermal protection prevents fault propagation during antenna short-circuit events. |
Use Scenario: Generating clean 5V or 9V phantom power for MEMS microphones in driver monitoring or voice command systems. IC Role / Device Role / Timing Role: High PSRR boost stage feeding low-noise LDOs; COMP pin tuned for minimal switching ripple at audio frequencies. Use Value: External compensation allows suppression of 640kHz/1.22MHz switching noise below microphone SNR floor; 1.24V reference ensures precise rail accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPQ4333-AEC1 | Synchronous rectification; 3.5A switch; fixed 2.2MHz fSW; no FREQ pin; higher IQ (25µA) | Better light-load efficiency; smaller inductor possible; less flexible frequency tuning | Choose MPQ4333-AEC1 when synchronous operation and smallest possible solution size outweigh need for frequency selection. |
| TPS61236P | Non-synchronous; 4A switch; fixed 1MHz fSW; no external compensation; 1.21V reference | Simpler layout (no COMP network); tighter VFB tolerance (±0.5%); no soft-start adjustment | Choose TPS61236P when design prioritizes ease of use and production consistency over loop optimization and startup control. |
Compared with MPQ4333-AEC1 and TPS61236P, the ISL78219ARTZ-T uniquely offers user-selectable switching frequency, fully adjustable external compensation, and the lowest shutdown current (<1µA), making it optimal for thermally constrained, always-on automotive subsystems requiring precise regulation and layout flexibility.
Availability
ISL78219ARTZ-T is available at Aetrix Electronics and suitable for satellite camera systems, auxiliary cooling fans, antenna bias supplies, and microphone power rails requiring stable component supply across automotive temperature and lifetime requirements.
Supply support for ISL78219ARTZ-T 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 is a global semiconductor leader specializing in microcontrollers, analog, power, and connectivity solutions for automotive, industrial, and IoT markets.
The ISL78219ARTZ-T belongs to Renesas' automotive power management portfolio, designed specifically for high-reliability DC-DC conversion in safety-critical and space-constrained vehicle subsystems.
FAQ
What is the maximum output voltage supported by the ISL78219ARTZ-T?
The ISL78219ARTZ-T supports an output voltage range from 1.1 × VIN to 24V. With minimum input of 2.3V, the lowest regulated output is ~2.53V; with maximum input of 6.0V, the highest is capped at 24V regardless of step-up ratio. This limit ensures safe operation of the internal 26V-rated LX pin and maintains stability across the full AEC-Q100 temperature range.
How does the FREQ pin affect switching frequency and design trade-offs in the ISL78219ARTZ-T?
The FREQ pin selects between 640kHz (pin grounded) and 1.22MHz (pin tied to VIN). At 1.22MHz, inductor size can be reduced by ~50%, but EMI filtering becomes more challenging and efficiency drops slightly at medium loads due to increased switching losses. At 640kHz, thermal performance improves and EMI is easier to manage, though inductor and capacitor footprints increase.
Can the ISL78219ARTZ-T operate with input voltage below 2.3V?
No - the ISL78219ARTZ-T has a guaranteed operational input range of 2.3V to 6.0V. Its UVLO threshold is 2.10V (typical) with 50mV hysteresis, meaning the device will not start or sustain regulation below ~2.05V. Below 2.3V, output regulation, current limit accuracy, and efficiency are not characterized or guaranteed per the datasheet.
What is the purpose of the COMP pin in the ISL78219ARTZ-T, and how is it configured?
The COMP pin is the output of the internal transconductance error amplifier and serves as the connection point for the external compensation network (typically a series RC from COMP to GND). This network sets the dominant pole and zero of the voltage loop, ensuring stability with low-ESR ceramic output capacitors and tailoring transient response for specific load dynamics in the ISL78219ARTZ-T application.
Does the ISL78219ARTZ-T include overtemperature protection, and how does it behave?
Yes - the ISL78219ARTZ-T includes internal thermal protection that triggers at approximately 150°C junction temperature. When activated, the device shuts down the power switch and enters hiccup mode: it remains off until die temperature falls below the hysteresis threshold (~135°C), then attempts automatic restart. This protects against sustained overload or poor heatsinking without requiring external circuitry.
ISL78219ARTZ-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- *
- Package/Case:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- -
- Output Configuration:
- -
- Topology:
- -
- Output Type:
- -
- Number of Outputs:
- -
- Voltage - Input (Min):
- -
- Voltage - Input (Max):
- -
- Voltage - Output (Min/Fixed):
- -
- Voltage - Output (Max):
- -
- Current - Output:
- -
- Frequency - Switching:
- -
- Synchronous Rectifier:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
ISL78219ARTZ-T FAQ
1.How can I place an order for ISL78219ARTZ-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL78219ARTZ-T 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 ISL78219ARTZ-T reliable?
The price and inventory of ISL78219ARTZ-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL78219ARTZ-T is usually 5 days.
3.What payment methods are accepted for ISL78219ARTZ-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL78219ARTZ-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL78219ARTZ-T?
ISL78219ARTZ-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL78219ARTZ-T 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 ISL78219ARTZ-T?
For technical support, including ISL78219ARTZ-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL78219ARTZ-T requirements.
6.How does Aetrix verify that ISL78219ARTZ-T is sourced from the original manufacturer or authorized distributors?
All ISL78219ARTZ-T 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 ISL78219ARTZ-T meets industry standards.
7.What is the process for return or replacement of ISL78219ARTZ-T?
All ISL78219ARTZ-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL78219ARTZ-T, 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 ISL78219ARTZ-T part is unused and in its original packaging.
Return procedure for ISL78219ARTZ-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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