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Renesas ISL78219ARTZ
- Part No.:
- ISL78219ARTZ
- Manufacturer:
- Renesas
- Package:
- -
- Datasheet:
-
ISL78219ARTZ.pdf
- Description:
- IC REG AUTO GRADE 2 STEP-UP
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Product details
Overview
ISL78219ARTZ 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 1.1×VIN to 24V output capability. It delivers >90% efficiency and supports satellite camera systems, auxiliary cooling fans, and antenna/microphone supplies.
For engineers reviewing the ISL78219ARTZ datasheet, ISL78219ARTZ pinout, ISL78219ARTZ application, or ISL78219ARTZ equivalent, key selection criteria include AEC-Q100 Grade 2 qualification (-40°C to +105°C), TDFN-10 package height ≤0.8mm, external compensation for ceramic capacitor compatibility, soft-start control via SS pin, and shutdown current <1µA.
Technical Context
The ISL78219ARTZ employs current-mode PWM control with internal transconductance amplifier (70–250µA/V) and fixed-frequency oscillator. Its architecture separates fast current-loop sensing from slower voltage-loop compensation, enabling stable operation with external RC network on COMP pin.
It integrates a 4.0A low-side MOSFET with 120mΩ rDS(ON) at VIN = 2.7V, supports duty cycle up to 92% at 640kHz, and features programmable soft-start via CSS capacitor charged by 4.5µA internal current source. FREQ pin selects between 640kHz (FREQ = GND) and 1.22MHz (FREQ = VIN) operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.3V to 6.0V - enables direct use with automotive 3.3V/5V rails and battery-backed systems down to 2.3V start-up. |
| Output Voltage Range | 1.1 × VIN to 24V - supports wide-ratio boosting for camera sensor bias, antenna tuning, and microphone preamp supplies. |
| Switching Frequency | 640kHz or 1.22MHz - selectable via FREQ pin; higher frequency allows smaller inductors (e.g., 10µH vs. 22µH) and faster transient response. |
| Integrated Switch | 4.0A, 120mΩ low-side MOSFET - eliminates external switch, reduces BOM count, and sustains >93% efficiency at 5VIN/12VOUT, 0.5A. |
| Shutdown Current | <1µA - minimizes quiescent drain in always-on automotive subsystems such as telematics wake-up circuits. |
| Operating Temperature | -40°C to +105°C ambient - AEC-Q100 Grade 2 qualified for under-hood and cabin-mounted electronics. |
| Package | 10-lead TDFN (L10.3x3B), 0.8mm max height - ultra-low profile for space-constrained modules like camera ECU PCBs. |
Pinout & Package
ISL78219ARTZ is housed in a 10-lead Thin Dual Flat No-lead (TDFN) package with exposed thermal pad (Pkg. Dwg. L10.3x3B), measuring 3.0mm × 3.0mm × 0.8mm max height. Pin 1 is marked by index area on top surface; thermal pad must be soldered to PCB ground plane for optimal thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - COMP | Error amplifier output | Connects external RC compensation network to stabilize voltage loop; sets integrator zero and high-frequency gain for transient response. |
| 2 - FB | Feedback input | Senses divided output voltage; internal 1.24V reference enables adjustable VOUT using R1/R2 divider (e.g., 12V = 1.24V × (1 + 86.6k/10k)). |
| 3 - EN | Enable control | Active-high logic input; pulling low disables regulator and reduces supply current to <1µA for system-level power gating. |
| 4,5 - GND | Power ground | Dual ground pins reduce impedance path for high di/dt switching currents; must connect to low-impedance PCB ground plane. |
| 6,7 - LX | Switch node | Drain of internal MOSFET; connects to inductor and Schottky diode anode; requires tight layout to minimize EMI and ringing. |
| 8 - VIN | Analog supply input | Primary power input (2.3–6.0V); requires local 0.1µF ceramic bypass capacitor placed adjacent to pin for noise suppression. |
| 9 - FREQ | Frequency select | Logic-controlled pin: grounded → 640kHz; tied to VIN → 1.22MHz; determines inductor size, efficiency trade-off, and EMI profile. |
| 10 - SS | Soft-start control | Accepts external capacitor; internal 4.5µA current source ramps voltage to limit inrush current and control VOUT slew rate. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 4.0A low-side MOSFET | rDS(ON) = 120mΩ at VIN = 2.7V - eliminates external switch, reduces board area, and avoids gate-drive complexity in non-synchronous boost. |
| Selectable switching frequency | 640kHz or 1.22MHz via FREQ pin - enables optimization between inductor size (smaller at 1.22MHz) and conduction loss (lower at 640kHz). |
| External compensation | COMP pin accepts series RC network - allows precise tuning of loop bandwidth and phase margin for varied output capacitors (e.g., 22µF ceramic + 0.1µF bypass). |
| Adjustable soft-start | SS pin controls ramp time via external capacitor - prevents input voltage droop and output overshoot during power-up in multi-rail systems. |
| AEC-Q100 Grade 2 qualification | -40°C to +105°C ambient operation - validated for automotive cabin and engine bay proximity applications including camera modules and fan controllers. |
Applications
| Satellite Camera Systems | Auxiliary Cooling Fans |
|---|---|
|
Use Scenario: Powering CMOS image sensor bias rails (e.g., 12V AVDD) from 3.3V or 5V domain in automotive surround-view cameras. IC Role / Device Role / Timing Role: Non-synchronous boost regulator providing regulated high-voltage rail with fast load transient response to sensor pixel clocking demands. Use Value: 93% efficiency at 5VIN/12VOUT, 0.5A and 0.8mm profile enable compact, thermally efficient camera module designs meeting ASIL-B constraints. |
Use Scenario: Driving 12V DC brushless cooling fans from 5V vehicle bus in ADAS ECUs or infotainment heat sinks. IC Role / Device Role / Timing Role: High-current step-up converter supplying stable 12V output despite input voltage sag during cranking (down to 2.3V). Use Value: Integrated 4.0A MOSFET and 92% max duty cycle sustain fan startup torque under low-VIN conditions without external components. |
| Antenna Supplies | Microphone Preamp Supplies |
|
Use Scenario: Generating 5–12V bias for active antenna tuners and RF front-end LNAs in connected car telematics modules. IC Role / Device Role / Timing Role: Low-noise boost regulator with external compensation to reject switching ripple and maintain RF signal integrity. Use Value: 1.22MHz option minimizes inductor size while 0.1µF bypass on VIN and RC filtering on COMP suppress EMI coupling into sensitive RF paths. |
Use Scenario: Providing clean, regulated 5V or 9V supply for MEMS microphone preamplifiers in voice recognition systems. IC Role / Device Role / Timing Role: Automotive-qualified boost IC delivering low-output-ripple voltage with soft-start to prevent audio pop during boot. Use Value: Feedback reference tolerance (±1.6%) and load regulation (0.3%) ensure consistent microphone sensitivity across temperature and load variations. |
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 output; fixed 2.2MHz switching; no FREQ pin; requires external compensation. | Better light-load efficiency due to synchronous design; higher fSW limits inductor selection but increases EMI filtering burden. | Preferred when >95% efficiency at light loads is critical and PCB layout can accommodate tighter EMI control. |
| LM61480-Q1 | Synchronous; 8A output; 2.1MHz fixed frequency; integrated BOOT capacitor; no external COMP network required. | Higher current capability and simplified loop compensation; larger TQFN-16 package (4mm × 4mm) vs. ISL78219ARTZ's 3mm × 3mm footprint. | Chosen for high-current fan drivers or multi-rail systems where board space permits larger package and higher peak load demand exists. |
Compared with MPQ4333-AEC1 and LM61480-Q1, the ISL78219ARTZ offers lower component count via non-synchronous architecture, selectable frequency for layout flexibility, and smallest package height (0.8mm), making it optimal for ultra-thin camera modules where thermal and spatial constraints dominate.
Availability
ISL78219ARTZ is available at Aetrix Electronics and suitable for satellite camera systems, auxiliary cooling fans, and antenna/microphone supplies requiring stable component supply across automotive production lifecycles.
Supply support for ISL78219ARTZ 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 automotive SoCs, with deep expertise in AEC-Q100-qualified power management solutions.
The ISL78219ARTZ belongs to Renesas' automotive analog power portfolio, designed specifically for compact, high-efficiency DC-DC conversion in space- and thermal-constrained vehicle subsystems such as ADAS cameras and infotainment peripherals.
FAQ
What is the maximum output voltage supported by the ISL78219ARTZ?
The ISL78219ARTZ supports an output voltage range from 1.1 × VIN to 24V. For example, with a 5V input, the maximum regulated output is 24V (not limited by 1.1 × 5V), as confirmed in the Recommended Operating Conditions table on page 4 of FN8941. This enables use in 12V and 24V auxiliary rail generation from low-voltage sources.
Does the ISL78219ARTZ require an external Schottky diode, and what are its key requirements?
Yes, the ISL78219ARTZ requires an external Schottky diode due to its non-synchronous boost topology. Per datasheet Section 4.5, the diode must handle ≥4.0A peak current, have reverse breakdown voltage exceeding the maximum output voltage (e.g., >24V for 24V VOUT), and feature low forward voltage drop and fast recovery to maintain >90% efficiency.
How does the FREQ pin affect the ISL78219ARTZ's performance and design trade-offs?
The FREQ pin selects between 640kHz (FREQ = GND) and 1.22MHz (FREQ = VIN). At 1.22MHz, inductor size is reduced (e.g., 10µH vs. 22µH), improving transient response and saving board area, but conduction losses rise slightly. At 640kHz, efficiency improves at medium-to-heavy loads and EMI filtering is simpler, per Figures 3–8 in FN8941.
What is the purpose of the COMP pin on the ISL78219ARTZ, and how is it configured?
The COMP pin is the output of the internal transconductance error amplifier and serves as the connection point for external RC compensation. As described in Section 4.7, a series resistor (0–2.0kΩ) and capacitor (3–10nF) from COMP to GND set loop stability and transient response-enabling robust regulation with low-ESR ceramic output capacitors without oscillation.
Is the ISL78219ARTZ pin-compatible with other devices in the ISL782xx family?
No, the ISL78219ARTZ is not pin-compatible with other ISL782xx variants such as ISL78213 or ISL78214. Its 10-lead TDFN pinout (e.g., dual LX pins, dedicated FREQ and SS pins) is unique to this part, as shown in Figure 1.3 and Table 1.4 of FN8941; substitution requires full schematic and layout revision.
ISL78219ARTZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- *
- Package/Case:
- -
- Packaging:
- Tray
- 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 FAQ
1.How can I place an order for ISL78219ARTZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL78219ARTZ 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 reliable?
The price and inventory of ISL78219ARTZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL78219ARTZ is usually 5 days.
3.What payment methods are accepted for ISL78219ARTZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL78219ARTZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL78219ARTZ?
ISL78219ARTZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL78219ARTZ 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?
For technical support, including ISL78219ARTZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL78219ARTZ requirements.
6.How does Aetrix verify that ISL78219ARTZ is sourced from the original manufacturer or authorized distributors?
All ISL78219ARTZ 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 meets industry standards.
7.What is the process for return or replacement of ISL78219ARTZ?
All ISL78219ARTZ units undergo pre-shipment inspection (PSI). If there is an issue with ISL78219ARTZ, 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 part is unused and in its original packaging.
Return procedure for ISL78219ARTZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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