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Renesas ISL78213ARZ
- Part No.:
- ISL78213ARZ
- Manufacturer:
- Renesas
- Package:
- 16-VQFN Exposed Pad
- Datasheet:
-
ISL78213ARZ.pdf
- Description:
- IC REG BUCK ADJ 3A 16QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,248
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Product details
Overview
ISL78213ARZ 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, 97% peak efficiency, 2% output voltage accuracy over temperature/load/line, and AEC-Q100 qualification for automotive use in microcontroller, FPGA, and DSP power rails.
For engineers reviewing the ISL78213ARZ datasheet, ISL78213ARZ pinout, ISL78213ARZ application, or ISL78213ARZ equivalent, this page provides verified technical context on its current-mode control architecture, 100% duty-cycle operation, soft-start/soft-discharge behavior, PFM/PWM mode selection, and thermal shutdown with 25°C hysteresis - all critical for automotive DC/DC POL design and prebiased startup validation.
Technical Context
The ISL78213ARZ implements a current-mode PWM control scheme with internal slope compensation (237mV/µs), 250mV/A current-sense gain, and transconductance error amplifier (20µA/V) with internal 27pF/390kΩ compensation. Its dual-MOSFET architecture integrates matched P-Channel and N-Channel switches with typical 50mΩ RDS(on) each at VIN = 5V.
It supports three operational modes: forced PWM (SYNCH = HI), pulse-skipping PFM (SYNCH = LO), and external synchronization up to 4MHz via negative-edge-triggered SYNCH input. Overcurrent protection uses hiccup-mode restart after 17 consecutive fault detections, while short-circuit response drops oscillator frequency to 1/3 nominal.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 3A continuous - supports high-current µC/FPGA core rails without external MOSFETs. |
| Input Voltage Range | 2.8V to 5.5V - compatible with 3.3V and 5V intermediate bus architectures and automotive battery transients. |
| Switching Frequency | 1MHz fixed (PWM), synchronizable to 4MHz - enables compact 1.5µH inductors and low-profile ceramic capacitors. |
| Quiescent Current | 35µA in PFM mode - extends battery life in always-on automotive modules. |
| Output Accuracy | ±2% over -40°C to +105°C, line, and load - ensures reliable regulation for safety-critical ADAS subsystems. |
| Duty Cycle Range | 0–100% - supports ultra-low dropout (<300mV at 3A) during battery brownout conditions. |
| Thermal Shutdown | 140°C with 25°C hysteresis - prevents latch-up during sustained overload or poor PCB thermal design. |
| Power-Good Delay | 1ms rising-edge delay - provides deterministic system reset timing for downstream logic sequencing. |
Pinout & Package
The ISL78213ARZ is housed in a RoHS-compliant, thermally enhanced 4mm × 4mm 16-lead QFN package (L16.4x4) with exposed pad connected to SGND for <3°C/W junction-to-case thermal resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 VIN | Input supply rail | Accepts 2.8V–5.5V; requires local 10µF ceramic decoupling to PGND. |
| 3 VDD | Analog supply reference | Must be tied directly to VIN; powers bandgap, error amp, and control logic. |
| 4 SYNCH | Mode control/synchronization input | Logic-high = forced PWM; logic-low = PFM; external clock = sync up to 4MHz (negative edge). |
| 5 EN | Enable/disable control | Active-high; initiates soft-start on rise; discharges output capacitor via 100Ω internal switch on fall. |
| 7 PG | Open-drain power-good indicator | 1ms delayed assertion after regulation; sinks 1mA max; threshold 89–95% of VREF. |
| 8 VFB | Feedback node | Connects to resistor divider; 0.8V internal reference; ±0.1µA bias current enables precise output programming. |
| 13–15 LX | Switching node | Drives external inductor; handles peak currents up to 4.8A; requires low-inductance layout to PGND. |
| 11, 12 PGND | Power ground return | High-current return path for MOSFETs and inductor; separate from SGND to minimize noise coupling. |
| 9, 10 SGND | Signal ground reference | Reference for VFB, EN, SYNCH, PG; must connect to exposed pad via multiple vias for stability. |
| 6, 16 NC | No-connect | Not internally bonded; must remain unconnected per datasheet. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated P/N-channel MOSFETs | 50mΩ typical RDS(on) each at 5V - eliminates external switches and reduces BOM count by ≥4 components. |
| Prebiased output startup | Supports start-up into precharged output (e.g., hot-swap systems) without reverse current or instability. |
| Soft-stop output discharge | Internal 100Ω switch actively pulls VOUT to SGND during disable - prevents floating rail issues in multi-rail systems. |
| Selectably forced PWM mode | Eliminates variable-frequency noise and EMI in noise-sensitive applications like camera modules or radar receivers. |
| AEC-Q100 Grade 1 qualification | Validated for -40°C to +105°C ambient operation - meets automotive functional safety requirements for body and infotainment ECUs. |
| 100% duty-cycle operation | Enables dropout <300mV at 3A - sustains regulation during cold-crank battery dips down to 2.8V. |
Applications
| Automotive Infotainment Power | ADAS Camera Module Supply |
|---|---|
|
Use Scenario: Powers SoC, DDR memory, and display interface in head-unit systems with wide input voltage range and strict EMI limits. IC Role / Device Role / Timing Role: Primary POL regulator converting 5V bus to 1.2V/1.8V/3.3V rails with synchronized 2MHz operation to avoid AM band interference. Use Value: 97% efficiency at 2A load minimizes thermal stress in sealed enclosures; PFM mode cuts quiescent draw to 35µA during sleep states. |
Use Scenario: Supplies image sensor and ISP in rear-view or surround-view cameras requiring low-noise, fast-transient response. IC Role / Device Role / Timing Role: Core voltage regulator with 1ms PG assertion enabling precise power sequencing before sensor initialization. Use Value: Soft-start prevents inrush-induced voltage droop on shared 5V bus; 100% duty cycle maintains 1.2V output during engine cranking. |
| FPGA I/O Bank Regulation | Industrial Controller µP Core Supply |
|
Use Scenario: Delivers configurable 1.2V–3.3V I/O voltage to Xilinx/Intel FPGAs in automotive gateway or telematics units. IC Role / Device Role / Timing Role: Adjustable buck converter using external resistor divider; VFB pin enables precision feedback with ±2% accuracy across temperature. Use Value: Internal compensation eliminates external Type-II/III networks; 16-pin QFN fits tight layout constraints near FPGA BGA packages. |
Use Scenario: Provides 0.8V–1.5V core voltage to ARM Cortex-M7/M4 microcontrollers in engine control or battery management modules. IC Role / Device Role / Timing Role: High-reliability DC/DC stage with hiccup-mode OCP and thermal shutdown protecting against overtemperature faults. Use Value: AEC-Q100 qualification ensures long-term reliability under vibration and thermal cycling; PG signal interfaces directly to MCU reset controller. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS54332DR | 3A, 3.5–28V input, 570kHz fixed freq, no PFM mode, 125°C max junction temp | Targets industrial 12V/24V inputs; lacks AEC-Q100 rating and prebias startup | Choose for non-automotive 12V systems where higher VIN range outweighs automotive qualification needs. |
| MPQ4420AGL-A | 2A, 3.3–36V input, 2.2MHz sync-capable, AEC-Q100 Grade 1, but no 100% duty cycle | Higher VIN range suits 24V commercial vehicles; lower current and no dropout optimization for cold-crank | Prefer when 24V compatibility is mandatory and 3A output is not required; verify dropout margin at 2.8V input. |
Compared with TPS54332DR and MPQ4420AGL-A, the ISL78213ARZ uniquely combines AEC-Q100 qualification, 3A output, 100% duty cycle, and 35µA PFM quiescent current - making it optimal for 5V-based automotive core rails where cold-crank resilience and ultra-low standby power are essential.
Availability
ISL78213ARZ is available at Aetrix Electronics and suitable for automotive infotainment, ADAS camera modules, and industrial controller designs requiring stable component supply, long lifecycle support, and AEC-Q100-compliant performance.
Supply support for ISL78213ARZ 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-certified manufacturing and AEC-Q100 validation processes.
The ISL78213ARZ belongs to Renesas' automotive-grade power management IC family, designed specifically for high-efficiency, low-quiescent-current DC/DC conversion in safety-critical vehicle subsystems operating from 2.8V–5.5V inputs.
FAQ
What is the maximum output current capability of the ISL78213ARZ?
The ISL78213ARZ delivers up to 3A continuous output current under recommended operating conditions (TA = –40°C to +105°C, VIN = 3.6V). Its internal MOSFETs are rated for 4.8A peak switch current, and the device enters hiccup-mode current limiting if sustained overload exceeds safe thermal limits. Derating is required above +85°C ambient per thermal resistance data (θJA = 39°C/W).
Does the ISL78213ARZ support prebiased output startup?
Yes, the ISL78213ARZ supports prebiased output startup. During soft-start initiation with a precharged output, the controller operates in skip mode and avoids reverse inductor current by monitoring zero-crossing events. This prevents damage to downstream components and ensures stable regulation without external diode clamping circuits.
How does the ISL78213ARZ handle thermal overload conditions?
The ISL78213ARZ incorporates thermal shutdown that activates at +140°C junction temperature and resumes operation at +115°C (25°C hysteresis). When triggered, the device halts switching, discharges the output via its internal soft-stop switch, and waits for cooldown before reattempting soft-start - preventing thermal runaway in enclosed automotive environments.
What is the purpose of the exposed pad on the ISL78213ARZ QFN package?
The exposed pad on the ISL78213ARZ's 4mm × 4mm QFN package must be soldered to the SGND plane using ≥4 thermal vias. It serves as the primary thermal conduction path (θJC = 3°C/W) and electrical reference for signal integrity. Leaving it unconnected degrades thermal performance and may cause instability due to elevated junction temperature and ground bounce.
Can the ISL78213ARZ be synchronized to an external clock source?
Yes, the ISL78213ARZ accepts an external clock signal on the SYNCH pin for synchronization up to 4MHz. The device triggers its LX switching edge on the falling edge of the external clock, enabling phase-shifted operation of multiple ISL78213ARZ units to reduce input ripple and eliminate beat frequencies in multi-phase POL systems.
ISL78213ARZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 16-VQFN Exposed Pad
- Packaging:
- Tube
- 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 FAQ
1.How can I place an order for ISL78213ARZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL78213ARZ 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 reliable?
The price and inventory of ISL78213ARZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL78213ARZ is usually 5 days.
3.What payment methods are accepted for ISL78213ARZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL78213ARZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL78213ARZ?
ISL78213ARZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL78213ARZ 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?
For technical support, including ISL78213ARZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL78213ARZ requirements.
6.How does Aetrix verify that ISL78213ARZ is sourced from the original manufacturer or authorized distributors?
All ISL78213ARZ 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 meets industry standards.
7.What is the process for return or replacement of ISL78213ARZ?
All ISL78213ARZ units undergo pre-shipment inspection (PSI). If there is an issue with ISL78213ARZ, 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 part is unused and in its original packaging.
Return procedure for ISL78213ARZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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