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Renesas ISL78219ARTZ-T7A
- Part No.:
- ISL78219ARTZ-T7A
- Manufacturer:
- Renesas
- Package:
- 10-WFDFN Exposed Pad
- Datasheet:
-
ISL78219ARTZ-T7A.pdf
- Description:
- IC REG BOOST ADJ 10TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:317
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Product details
Overview
ISL78219ARTZ-T7A 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 power rails and auxiliary fan supplies in AEC-Q100 Grade 2 environments (−40°C to +105°C).
For engineers reviewing the ISL78219ARTZ-T7A datasheet, ISL78219ARTZ-T7A pinout, ISL78219ARTZ-T7A application, or ISL78219ARTZ-T7A equivalent, key selection considerations include its dual-frequency PWM control, external compensation flexibility for ceramic output capacitors, thermal shutdown protection, ultra-low 1µA shutdown current, and TDFN-10 package with 0.8mm max height for space-constrained automotive modules.
Technical Context
The ISL78219ARTZ-T7A implements fixed-frequency current-mode PWM control with internal transconductance error amplifier and fast current-sense loop. Its architecture enables stable operation with low-ESR ceramic output capacitors via external RC compensation on the COMP pin.
It features dual-frequency selection via FREQ pin logic level (GND = 640kHz, VIN = 1.22MHz), adjustable soft-start via external capacitor on SS pin, and precise 1.24V feedback reference with ±2% tolerance over temperature. Input UVLO (2.10V rising, 50mV hysteresis) ensures reliable startup across cold-crank conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.3V to 6.0V - supports automotive battery transients including cold-crank down to 2.3V. |
| Output Voltage Range | 1.1 × VIN to 24V - enables flexible rail generation (e.g., 5V, 9.2V, 12.3V) without external LDO post-regulation. |
| Switching Frequency | 640kHz or 1.22MHz - selectable via FREQ pin; higher frequency enables 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. |
| Feedback Reference | 1.24V ±2% - sets output voltage via resistor divider (VOUT = 1.24V × (1 + R1/R2)); low bias current (0.5µA max) preserves accuracy with high-value dividers. |
| Shutdown Current | <1µA - minimizes battery drain in always-on automotive subsystems during sleep mode. |
| Operating Temp | −40°C to +105°C ambient - qualified per AEC-Q100 Grade 2 for under-hood and cabin electronics. |
| Package | 10-lead TDFN (3mm × 3mm, 0.8mm max height) - thermally enhanced with exposed pad; θJA = 45.8°C/W enables high-power density without heatsink. |
Pinout & Package
ISL78219ARTZ-T7A uses a 10-lead Thin Dual Flat No-lead (TDFN) package (Pkg. Dwg. L10.3x3B) with 0.5mm pitch and exposed thermal pad. The package measures 3.0mm × 3.0mm with maximum height of 0.8mm, optimized for compact automotive PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - COMP | Error amplifier output | Connects external RC network to set loop compensation zero/pole; enables stable regulation with low-ESR ceramic capacitors. |
| 2 - FB | Voltage feedback input | Senses divided output voltage; internal 1.24V reference enables precise VOUT programming (e.g., 12.3V via 86.6k/10k divider). |
| 3 - EN | Enable control | Active-high logic input; pulling low disables switching 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 return currents; must connect directly to exposed thermal pad. |
| 6,7 - LX | Switch node | Drain of internal 4A 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. |
| 9 - FREQ | Frequency select | Logic-controlled input: GND selects 640kHz, VIN selects 1.22MHz - determines inductor size, efficiency trade-off, and noise spectrum. |
| 10 - SS | Soft-start control | Accepts external capacitor to ramp output voltage linearly; prevents inrush current and overshoot during power-up. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 4.0A low-rDS(ON) MOSFET | 120mΩ RDS(ON) at VGS = 2.7V enables high-current boost without external switch or gate driver, reducing solution size by >30%. |
| Selectable 640kHz / 1.22MHz switching | Enables optimization between efficiency (lower fSW) and component size/transient response (higher fSW) for diverse automotive loads. |
| External compensation (COMP pin) | Allows full control of loop stability and transient performance using standard RC network - supports wide range of ceramic output capacitors (22µF–44µF). |
| Adjustable soft-start (SS pin) | Internal 4.5µA current source charges external capacitor to control output slew rate - prevents inrush into downstream capacitance and avoids brownout. |
| AEC-Q100 Grade 2 qualification | Validated for −40°C to +105°C ambient operation with thermal shutdown (150°C) and input UVLO (2.10V) - meets automotive reliability requirements. |
| Ultra-low shutdown current | <1µA shutdown current extends battery life in always-on systems such as telematics and camera modules during vehicle sleep mode. |
Applications
| Satellite Camera Systems | Auxiliary Cooling Fans |
|---|---|
Use Scenario: Powering CMOS image sensors and lens actuators in ADAS surround-view cameras requiring clean, regulated 5V or 9.2V rails from 3.3V or 5V battery domains. IC Role / Device Role / Timing Role: Non-synchronous boost converter generating isolated, ripple-controlled output voltage with fast load transient response to handle sensor burst modes. Use Value: 93% efficiency at 5VIN/12VOUT, 0.5A and 1.22MHz operation enable compact 10µH inductor and minimal thermal rise in sealed camera housings. | Use Scenario: Driving 12V DC brushless fans for engine bay cooling or HVAC systems where input voltage varies from 2.3V (cold crank) to 6.0V (load dump). IC Role / Device Role / Timing Role: High-current boost regulator delivering up to 1A output with programmable soft-start to prevent fan stall during startup. Use Value: Integrated 4A MOSFET and thermal protection ensure robust operation under continuous 105°C ambient; 640kHz mode optimizes efficiency at full fan load. |
| Antenna Supplies | Microphone Supplies |
Use Scenario: Generating stable 5V or 12V bias for active GPS/GNSS antennas in roof-mounted modules with strict EMI limits. IC Role / Device Role / Timing Role: Low-noise boost converter with selectable frequency to avoid interference in RF front-end bands; COMP pin enables EMI filtering tuning. Use Value: 1.22MHz operation shifts switching harmonics above sensitive GNSS bands (1.575GHz); 0.8mm profile fits thin antenna enclosures. | Use Scenario: Providing low-noise 3.3V or 5V power to MEMS microphones in infotainment head units where PSRR and ripple affect audio SNR. IC Role / Device Role / Timing Role: Precision feedback-controlled boost stage with 1.24V reference and low FB bias current to maintain output accuracy under varying microphone bias loads. Use Value: <0.3% load regulation and <0.2% line regulation ensure consistent microphone sensitivity; 0.1µF VIN bypass suppresses supply noise coupling. |
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 | 4A synchronous boost; 2.7–16V input; fixed 500kHz fSW; no FREQ pin; requires external compensation. | Better light-load efficiency due to synchronous rectification; lacks dual-frequency option and adjustable soft-start. | Prefer MPQ4333-AEC1 when synchronous operation and lower quiescent current (<10µA) are critical, but accept fixed frequency and larger solution size. |
| TPS61236EVM-121 | 3.2A synchronous boost; 2.3–5.5V input; 1.2MHz fixed fSW; integrated soft-start; no external COMP. | Higher integration (no external diode), but limited to 5.5V input and lacks thermal shutdown flag or UVLO hysteresis. | Choose TPS61236EVM-121 for simplified design with guaranteed 1.2MHz operation and no compensation tuning, but verify input voltage margin at cold crank. |
Compared with MPQ4333-AEC1 and TPS61236EVM-121, the ISL78219ARTZ-T7A offers unique dual-frequency selection, external compensation for ceramic capacitor optimization, and AEC-Q100 Grade 2 validation with explicit thermal shutdown and UVLO hysteresis - making it optimal for cost-sensitive, space-constrained automotive boost applications requiring design flexibility.
Availability
ISL78219ARTZ-T7A is available at Aetrix Electronics and suitable for satellite camera systems, auxiliary cooling fans, antenna supplies, and microphone supplies requiring stable component supply across automotive production lifecycles.
Supply support for ISL78219ARTZ-T7A 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 SoC solutions for automotive, industrial, and IoT markets.
The ISL78219ARTZ-T7A belongs to Renesas' automotive analog power portfolio, designed specifically for high-reliability DC-DC conversion in safety-critical vehicle subsystems operating across extended temperature ranges.
FAQ
What is the maximum output voltage supported by the ISL78219ARTZ-T7A?
The ISL78219ARTZ-T7A supports an output voltage range from 1.1 × VIN up to 24V. For example, with a 5V input, the maximum regulated output is 24V (not limited by 1.1 × VIN in this case). This allows use in 12V rail generation and high-voltage antenna bias applications. The device maintains regulation and protection features across this full range when used with appropriate external components per the datasheet guidelines.
How does the FREQ pin configure switching frequency on the ISL78219ARTZ-T7A?
The FREQ pin on the ISL78219ARTZ-T7A selects between two fixed PWM frequencies: connecting FREQ to GND sets 640kHz, while connecting it to VIN selects 1.22MHz. These frequencies are factory-trimmed and specified with ±20% accuracy. The choice affects inductor size, efficiency vs. transient response trade-offs, and EMI profile - 1.22MHz enables smaller magnetics but may reduce peak efficiency at heavy loads compared to 640kHz.
Can the ISL78219ARTZ-T7A operate with input voltage below 2.3V?
No - the ISL78219ARTZ-T7A has a guaranteed minimum operating input voltage of 2.3V, with UVLO rising threshold at 2.10V ±100mV. Below 2.3V, the device will not regulate or sustain output; it enters undervoltage lockout and draws only leakage current. This specification ensures reliable startup during automotive cold-crank events while preventing unstable operation near the MOSFET's conduction limit.
What thermal protection features does the ISL78219ARTZ-T7A include?
The ISL78219ARTZ-T7A includes internal thermal shutdown that activates at +150°C junction temperature. Upon trip, the device halts switching and holds output in high-impedance state until junction temperature falls below the hysteresis threshold (~135°C). This protects against sustained overload or poor PCB thermal design. The 10-lead TDFN package with exposed pad provides low θJC = 3.4°C/W to facilitate heat transfer to the PCB copper plane.
Is the ISL78219ARTZ-T7A pin-compatible with other devices in the ISL782xx family?
No - the ISL78219ARTZ-T7A is not pin-compatible with other ISL782xx variants (e.g., ISL78213, ISL78216). Pin assignments differ significantly: ISL78219 uses dual LX pins (6,7) and dedicated FREQ/SS pins, whereas other family members integrate different features (e.g., synchronous rectification, different current limits, or enable polarity). Always verify pinout and functional block diagram before substitution.
ISL78219ARTZ-T7A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 10-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Boost
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.3V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 2.53V
- Voltage - Output (Max):
- 24V
- Current - Output:
- -
- Frequency - Switching:
- 640kHz ~ 1.22MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-TDFN-EP (3x3)
ISL78219ARTZ-T7A FAQ
1.How can I place an order for ISL78219ARTZ-T7A through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL78219ARTZ-T7A 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-T7A reliable?
The price and inventory of ISL78219ARTZ-T7A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL78219ARTZ-T7A is usually 5 days.
3.What payment methods are accepted for ISL78219ARTZ-T7A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL78219ARTZ-T7A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL78219ARTZ-T7A?
ISL78219ARTZ-T7A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL78219ARTZ-T7A 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-T7A?
For technical support, including ISL78219ARTZ-T7A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL78219ARTZ-T7A requirements.
6.How does Aetrix verify that ISL78219ARTZ-T7A is sourced from the original manufacturer or authorized distributors?
All ISL78219ARTZ-T7A 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-T7A meets industry standards.
7.What is the process for return or replacement of ISL78219ARTZ-T7A?
All ISL78219ARTZ-T7A units undergo pre-shipment inspection (PSI). If there is an issue with ISL78219ARTZ-T7A, 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-T7A part is unused and in its original packaging.
Return procedure for ISL78219ARTZ-T7A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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