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Renesas ISL78213ARZ-T
- Part No.:
- ISL78213ARZ-T
- Manufacturer:
- Renesas
- Package:
- 16-VQFN Exposed Pad
- Datasheet:
-
ISL78213ARZ-T.pdf
- Description:
- IC REG BUCK ADJ 3A 16QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,459
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Product details
Overview
ISL78213ARZ-T from Renesas (formerly Intersil) is a monolithic synchronous buck regulator delivering up to 3A continuous output current from a 2.8V–5.5V input, featuring 1MHz PWM switching (synchronizable to 4MHz), 97% peak efficiency, 35µA quiescent current in PFM mode, and AEC-Q100 qualification for automotive power rails.
For engineers reviewing the ISL78213ARZ-T datasheet, ISL78213ARZ-T pinout, ISL78213ARZ-T application, or ISL78213ARZ-T equivalent, this device supports prebiased start-up, soft-stop output discharge, 1ms power-good timing, 100% duty-cycle operation for ultra-low dropout (<300mV at 3A), and selectable forced-PWM/DCM modes - critical for low-noise µC/FPGA POL designs.
Technical Context
The ISL78213ARZ-T uses internal current-mode control with slope compensation and a transconductance error amplifier (20µA/V gain) for fast transient response and stable loop behavior across temperature and load. Its dual-MOSFET architecture integrates matched 50mΩ P-Channel and N-Channel switches (at VIN = 5V, IO = 200mA), enabling high-efficiency regulation without external power FETs.
It implements dual operating modes: forced PWM for EMI-sensitive systems and pulse-skipping PFM for ultra-low IQ (35µA) at light loads. Synchronization via the SYNCH pin accepts external clocks up to 4MHz with negative-edge triggering, supporting out-of-phase multi-rail ripple cancellation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 3A continuous - supports single-rail powering of automotive microcontrollers and FPGA core supplies. |
| Input Voltage Range | 2.8V to 5.5V - compatible with 3.3V and 5V intermediate bus architectures and battery-backed systems. |
| Switching Frequency | 1MHz nominal, synchronizable to 4MHz - enables use of compact 1.5µH inductors and <50mV output ripple with 44µF total ceramic capacitance. |
| Quiescent Current | 35µA in PFM mode - extends battery life in always-on automotive modules (e.g., telematics, ADAS sensors). |
| Reference Voltage | 0.8V ±2% over temp/load/line - ensures tight output regulation (e.g., 1.8V ±18mV) without external trimming. |
| Duty Cycle Range | 0–100% - allows dropout <300mV at 3A, critical for brownout resilience in 12V-to-3.3V or 5V-to-1.2V conversion. |
| Power-Good Delay | 1ms fixed delay after regulation - provides deterministic sequencing for downstream logic and memory initialization. |
Pinout & Package
ISL78213ARZ-T is housed in a RoHS-compliant, thermally enhanced 4mm × 4mm, 16-lead QFN package with exposed pad (PKG DWG L16.4x4). The exposed pad must be soldered to SGND for optimal thermal performance (θJC = 3°C/W) and electrical stability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 VIN | Input power supply | Primary DC input (2.8–5.5V); requires local 10µF ceramic decoupling to PGND. |
| 3 VDD | Analog supply rail | Bias for internal bandgap and error amplifier; must be tied directly to VIN. |
| 4 SYNCH | Mode control / sync input | Logic-high = forced PWM; logic-low = PFM; external clock input (negative edge) for synchronization up to 4MHz. |
| 5 EN | Enable control | Active-high enable with 600µs wake-up delay; drives internal discharge switch during shutdown. |
| 7 PG | Power-good indicator | Open-drain output with 1ms delay; asserts high when VOUT reaches 92% of target (±3% hysteresis). |
| 8 VFB | Feedback node | Connects to resistor divider; senses regulated output; 0.1µA bias current enables precise 0.8V reference tracking. |
| 13–15 LX | Switch node | Drives external inductor; handles peak currents up to 4.8A; requires low-inductance layout to PGND. |
| 11, 12 PGND | Power ground | High-current return path for MOSFETs and inductor; separate from SGND to minimize noise coupling. |
| 9, 10 SGND | Signal ground | Reference for VFB, EN, SYNCH, PG; must connect to exposed pad via multiple vias for stability. |
| 6, 16 NC | No-connect | Unbonded pins; must remain unconnected and unpopulated on PCB. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated P/N-channel MOSFETs | 50mΩ/50mΩ RDS(on) at 5V - eliminates external FETs and gate drivers, reducing BOM count and layout area by >30%. |
| Soft-start & soft-stop | 1ms internal ramp + active output discharge - prevents inrush current and ensures clean power-down for volatile memory retention. |
| Hiccup-mode overcurrent protection | 17-cycle fault counter + 4-cycle restart delay - protects against sustained shorts while avoiding thermal runaway during fault conditions. |
| AEC-Q100 Grade 1 qualification | -40°C to +105°C ambient operation - validated for under-hood automotive applications including engine control and infotainment power supplies. |
| Prebiased output start-up | Supports powered-on VOUT prior to EN assertion - essential for hot-swap and redundant power system designs. |
Applications
| Automotive Infotainment Power | FPGA Core Supply |
|---|---|
Use Scenario: Powering SoC and display controllers in head units with strict EMI limits and cold-crank resilience. IC Role / Device Role / Timing Role: Primary 1.2V/1.8V POL regulator with 100% duty cycle and hiccup protection. Use Value: Maintains regulation down to 2.8V input during cranking; 35µA IQ extends battery standby time beyond 72 hours. |
Use Scenario: Delivering tightly regulated 1.0V–1.2V to Xilinx/Intel FPGA core rails with dynamic load steps up to 2A/µs. IC Role / Device Role / Timing Role: High-bandwidth synchronous buck with current-mode control and 1MHz switching. Use Value: Achieves <15mV undershoot on 2A load step due to fast transient response and internal slope compensation. |
| ADAS Camera Module | Telematics Control Unit (TCU) |
Use Scenario: Powering image sensor and ISP in rear-view camera modules requiring low noise and AEC-Q100 compliance. IC Role / Device Role / Timing Role: Low-EMI PFM-mode regulator with SYNC input for spread-spectrum coordination across multiple rails. Use Value: Reduces conducted emissions by >15dB via out-of-phase synchronization with adjacent ISL78213ARZ-T units. |
Use Scenario: Supplying 3.3V to cellular modem, GNSS receiver, and CAN transceiver in always-on vehicle connectivity systems. IC Role / Device Role / Timing Role: High-reliability buck with PG monitoring, thermal shutdown, and soft-discharge for safe firmware updates. Use Value: 1ms PG delay aligns with modem boot sequence; soft-stop prevents data corruption during power-loss events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPQ4420AGL-AEC1-Z | 4A rated, 2.5–36V input, 2.2MHz fixed frequency, no PFM mode, higher IQ (45µA) | Better suited for wide-input industrial applications; lacks prebias start-up and 100% duty cycle | Select when input exceeds 5.5V or higher output current is required; verify thermal design at full load. |
| TPS543320RHLT | 3A, 4–18V input, 1.8MHz, PMBus interface, no AEC-Q100 rating, 12µA shutdown IQ | Targeted at telecom/datacom; offers digital configuration but not qualified for automotive ambient temperatures | Choose only for non-automotive designs needing telemetry or dynamic voltage scaling; not drop-in for ISL78213ARZ-T. |
Compared with MPQ4420AGL-AEC1-Z and TPS543320RHLT, the ISL78213ARZ-T uniquely combines AEC-Q100 Grade 1 qualification, 100% duty cycle, prebiased start-up, and sub-40µA PFM quiescent current - making it the only option validated for automotive body electronics with battery backup constraints.
Availability
ISL78213ARZ-T is available at Aetrix Electronics and suitable for automotive infotainment, ADAS camera modules, telematics control units, and FPGA-based embedded systems requiring stable component supply across extended temperature and long product lifecycles.
Supply support for ISL78213ARZ-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 acquired Intersil in 2017 and maintains its automotive analog portfolio with TS16949-compliant manufacturing and AEC-Q100 validation processes.
The ISL78213ARZ-T belongs to Renesas' automotive-grade power management IC family, designed specifically for high-reliability point-of-load regulation in engine control, infotainment, and driver-assistance systems operating from 2.8V–5.5V inputs.
FAQ
What is the maximum junction temperature and thermal shutdown threshold for the ISL78213ARZ-T?
The ISL78213ARZ-T features thermal shutdown activation at +140°C junction temperature, with 25°C hysteresis ensuring reliable recovery at +115°C. Its 4×4 QFN package delivers θJC = 3°C/W, allowing sustained 3A operation at +105°C ambient when the exposed pad is properly connected to SGND with ≥6 thermal vias.
Does the ISL78213ARZ-T support output voltages below 0.8V?
No - the ISL78213ARZ-T has a fixed 0.8V internal reference voltage and is not designed for sub-0.8V outputs. It supports adjustable outputs ≥0.8V via external resistor divider (e.g., 1.2V, 1.8V, 3.3V); for 0.8V output, VFB is connected directly to VOUT with R3 omitted and R2 shorted per datasheet Figure 1.
How does the ISL78213ARZ-T handle output capacitor discharge during shutdown?
When EN is pulled low, the ISL78213ARZ-T activates an internal 100Ω discharge switch between VOUT and SGND, actively sinking current to bring the output to near-zero voltage within milliseconds. This soft-stop function prevents latch-up in downstream logic and ensures safe firmware reset sequences in automotive ECUs.
Can the ISL78213ARZ-T synchronize to an external clock while operating in PFM mode?
No - external synchronization via the SYNCH pin is only functional in forced-PWM mode. When SYNCH is pulled low (PFM mode), the internal oscillator operates autonomously with variable frequency; applying an external clock signal in this state has no effect and may cause undefined behavior per datasheet Section "Synchronization Control".
What is the minimum recommended output capacitance for stable operation of the ISL78213ARZ-T at 1.8V output?
Per datasheet Table 1 and Application Note AN1365, the minimum recommended output capacitance for 1.8V operation is 44µF total (e.g., two 22µF X5R/X7R ceramics), placed close to VOUT and SGND. Additional capacitance improves transient response and reduces ripple, especially under 2A load steps typical in µP/FPGA applications.
ISL78213ARZ-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 16-VQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.8V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 5.5V
- Current - Output:
- 3A
- Frequency - Switching:
- 1MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-QFN (4x4)
ISL78213ARZ-T FAQ
1.How can I place an order for ISL78213ARZ-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL78213ARZ-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 ISL78213ARZ-T reliable?
The price and inventory of ISL78213ARZ-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL78213ARZ-T is usually 5 days.
3.What payment methods are accepted for ISL78213ARZ-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL78213ARZ-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL78213ARZ-T?
ISL78213ARZ-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL78213ARZ-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 ISL78213ARZ-T?
For technical support, including ISL78213ARZ-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL78213ARZ-T requirements.
6.How does Aetrix verify that ISL78213ARZ-T is sourced from the original manufacturer or authorized distributors?
All ISL78213ARZ-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 ISL78213ARZ-T meets industry standards.
7.What is the process for return or replacement of ISL78213ARZ-T?
All ISL78213ARZ-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL78213ARZ-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 ISL78213ARZ-T part is unused and in its original packaging.
Return procedure for ISL78213ARZ-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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