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Renesas ISL78206AVEZ-T7A
- Part No.:
- ISL78206AVEZ-T7A
- Manufacturer:
- Renesas
- Package:
- 20-TSSOP (0.173", 4.40mm Width) Exposed Pad
- Datasheet:
-
ISL78206AVEZ-T7A.pdf
- Description:
- IC REG BUCK ADJ 2.5A 20HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,557
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Product details
Overview
ISL78206AVEZ-T7A from Renesas (formerly Intersil) is an AEC-Q100 qualified 40V synchronous buck controller with integrated high-side MOSFET, supporting up to 2.5A output current, ±1% output voltage regulation accuracy, and programmable switching frequency from 200kHz to 2.2MHz. It delivers robust cycle-by-cycle overcurrent protection and operates across -40°C to +105°C for automotive cold-crank and start-stop power systems.
For engineers reviewing the ISL78206AVEZ-T7A datasheet, ISL78206AVEZ-T7A pinout, ISL78206AVEZ-T7A application, or ISL78206AVEZ-T7A equivalent, this page provides verified technical context, validated pin functions, confirmed automotive-grade protections, and real-world thermal performance data under 24V/40V input conditions.
Technical Context
The ISL78206AVEZ-T7A implements peak current mode control with slope compensation, enabling fast transient response and inherent cycle-by-cycle current limiting. Its integrated high-side N-channel MOSFET features 140mΩ typical rDS(ON) at +25°C and supports both synchronous and non-synchronous buck topologies via configurable LGATE driver logic.
It incorporates a temperature-compensated current sense path, frequency foldback during overcurrent, and hiccup-mode recovery with 5× extended soft-start duration. The device uses an internal 5µA soft-start current source and offers full fault coverage: overvoltage (110%/120% trip), undervoltage (90% trip), overtemperature (160°C trip), and programmable OC limit via ILIMIT pin resistor.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3V to 40V - supports automotive battery transients including cold-crank (≥3V) and load-dump (≤40V) |
| Output Current Capability | 2.5A continuous - validated at +85°C ambient, 500kHz, VIN 8–30V, VOUT 5V, with proper thermal layout |
| Switching Frequency | 200kHz to 2.2MHz - programmable via FS pin resistor; default 500kHz when FS tied to VCC/GND/floating |
| Voltage Regulation Accuracy | ±1% - tight reference tolerance ensures stable 0.8V feedback threshold for precise output setting |
| Overcurrent Threshold | 3.6A default (IOC₁), 4.14A hiccup threshold (IOC₂) - programmable via ILIMIT pin resistor (40kΩ–330kΩ range) |
| Thermal Performance | θJA = 32°C/W - achieved with 20+ vias under 20 Ld HTSSOP exposed pad connected to large ground plane |
| Operating Temperature | -40°C to +105°C ambient - AEC-Q100 Grade 2 qualified for under-hood automotive applications |
Pinout & Package
ISL78206AVEZ-T7A is housed in a 20-lead HTSSOP package (M20.173A) with exposed thermal pad (PAD, Pin 21) requiring connection to PCB ground plane for thermal management. Pin assignments are validated per FN8618 Rev 2.00 datasheet.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PGND (1) | Power ground return | Common return path for high-current power flow and driver circuitry; must be low-impedance copper pour |
| BOOT (2) | High-side gate bias supply | Supplies floating voltage to drive internal N-MOSFET gate; requires 1µF ceramic capacitor to PHASE |
| VIN (3,4) | Main input supply | Connects to drain of integrated high-side MOSFET and input to internal LDO; rated 3–40V operation |
| SGND (5) | Analog signal ground | Return for control circuitry, error amplifier, and monitoring blocks; separate from PGND but tied at single point |
| VCC (6) | Internal LDO output | 4.5V ±0.3V regulated supply for IC bias; requires ≥4.7µF ceramic decoupling to SGND |
| EN (8) | Enable control input | Active-high logic; enables converter when >1.7V, disables when <1.0V; internal pull-up not required |
| FS (9) | Frequency set input | Resistor-to-GND sets oscillator frequency; open/VCC/GND defaults to 500kHz |
| SS (10) | Soft-start timing node | Charged by internal 5µA current source; external capacitor sets ramp time from 0 to 0.8V |
| FB (11) | Feedback input | Inverting input of error amplifier; senses output via resistor divider referenced to 0.8V internal bandgap |
| COMP (12) | Error amplifier output | Compensation node for loop stability; connects RC network between COMP and FB |
| ILIMIT (13) | Current limit programming | Resistor-to-GND sets peak current threshold; default 3.6A when open/VCC/GND |
| DGND (14) | Digital ground | Ground reference for SYNC, PGOOD, and digital logic; connect to SGND at quiet ground plane |
| PGOOD (15) | Power-good status output | Open-drain output pulled up to VCC; asserts HIGH after 128 cycles post-soft-start if FB within 90–110% of 0.8V |
| PHASE (16,17) | Switch node | Connects to inductor; tied to source of internal high-side MOSFET; critical for EMI and layout |
| SYNC (19) | Frequency synchronization I/O | Bidirectional: outputs local clock or accepts external sync signal (10% higher freq, >150ns pulse width) |
| LGATE (20) | Low-side gate driver output | Drives external N-MOSFET in synchronous mode; disable by connecting to VCC before startup in non-sync mode |
| NC (7,18) | No connection | Must be connected to SGND on quiet ground plane per layout guidelines |
| PAD (21) | Thermal pad | Non-electrical exposed copper; requires ≥20 vias to inner/outer ground planes for θJA = 32°C/W |
Key Features
| Feature | Design Value |
|---|---|
| Integrated high-side MOSFET | 140mΩ rDS(ON) @ +25°C eliminates external high-side switch and reduces BOM count |
| Synchronous & non-synchronous operation | Configurable LGATE driver supports either external low-side MOSFET or Schottky diode replacement |
| Hiccup-mode overcurrent protection | Second-tier 15% higher current threshold triggers 5× extended soft-start recovery, preventing thermal runaway |
| Programmable frequency with sync capability | Single resistor sets 200kHz–2.2MHz; SYNC pin enables multi-phase interleaving with automatic 180° phase shift |
| AEC-Q100 Grade 2 qualification | Validated for automotive environments: -40°C to +105°C ambient, ESD (2000V HBM), latch-up (100mA) |
| Pre-biased output startup | Supports hot-swap and rail sequencing without output voltage reversal or overshoot |
Applications
| Automotive Infotainment Power Supply | ADAS Camera Module Regulator |
|---|---|
|
Use Scenario: Powers SoC, DDR memory, and display interface in head-unit systems subjected to cold-crank (≥3V) and load-dump (≤40V) events. IC Role / Device Role / Timing Role: Primary buck controller delivering 5V/2.5A with ±1% regulation and hiccup-mode short-circuit protection. Use Value: Eliminates need for external high-side FET and discrete current sense, reducing solution size by 35% vs discrete controllers. |
Use Scenario: Supplies 3.3V to image sensor and ISP in rear-view or surround-view cameras operating under engine-off battery hold conditions. IC Role / Device Role / Timing Role: Synchronous buck regulator with pre-biased startup and 500kHz fixed frequency for low EMI in compact camera housings. Use Value: Maintains regulation during 6V–40V input transients while achieving >92% efficiency at 2A load per Figure 7. |
| Industrial Telematics Gateway | Commercial Vehicle Body Control Module |
|
Use Scenario: Provides 12V intermediate rail from 24V truck battery for LTE modem, GPS, and CAN transceivers in harsh vibration/temperature environments. IC Role / Device Role / Timing Role: Non-synchronous buck controller (diode-based) with EN-controlled sequencing and PGOOD system monitoring. Use Value: AEC-Q100 qualification ensures reliability over 15-year vehicle lifecycle; thermal design supports +85°C ambient derating. |
Use Scenario: Generates 5V for microcontroller, LIN transceivers, and LED drivers in door modules exposed to repeated cold-crank cycles. IC Role / Device Role / Timing Role: Automotive-grade buck controller with programmable OC limit (via ILIMIT) and 128-cycle PGOOD delay for deterministic fault reporting. Use Value: Cycle-by-cycle current limiting prevents fuse blowing during motor stall events; soft-start avoids inrush into capacitive loads. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL78201AVEZ-T7A | Pin-to-pin compatible boost-buck controller with wider VIN range (up to 60V) and integrated boost stage; no integrated high-side MOSFET | Required for systems needing regulated output during sub-3V cold-crank; supports bidirectional power flow | Select ISL78201AVEZ-T7A when input may drop below 3V or bidirectional regulation is needed; same PCB layout enables design reuse |
| MPQ4312-AEC1 | Monolithic 40V/3A synchronous buck with integrated high- and low-side MOSFETs; fixed 500kHz frequency; no FS/SYNC pins | Lacks frequency programming and synchronization; simpler layout but less flexible for EMI-sensitive multi-rail systems | Choose MPQ4312-AEC1 for cost-sensitive, space-constrained designs where fixed frequency suffices and multi-phase sync is unnecessary |
Compared with ISL78206AVEZ-T7A, ISL78201AVEZ-T7A adds boost capability at the expense of higher quiescent current and no integrated high-side FET, while MPQ4312-AEC1 integrates both FETs but sacrifices programmability and sync flexibility-making ISL78206AVEZ-T7A optimal for scalable, EMI-managed automotive buck designs.
Availability
ISL78206AVEZ-T7A is available at Aetrix Electronics and suitable for automotive infotainment, ADAS camera modules, and telematics gateways requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ISL78206AVEZ-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 Corporation acquired Intersil in 2017 and maintains full support for its automotive analog portfolio, including AEC-Q100 qualified power management ICs.
The ISL78206AVEZ-T7A belongs to Renesas' ISL78xxx automotive power controller family, designed specifically for robust DC-DC conversion in engine bay, chassis, and infotainment systems subject to wide input transients and extreme temperatures.
FAQ
What is the maximum continuous output current supported by the ISL78206AVEZ-T7A?
The ISL78206AVEZ-T7A delivers 2.5A continuous output current under validated conditions: +85°C ambient, 500kHz switching, VIN 8–30V, VOUT 5V, and proper thermal layout with 20+ vias under the exposed pad. Derating is required above +85°C ambient or at higher VIN/VOUT combinations due to junction temperature limits (≤+125°C).
Does the ISL78206AVEZ-T7A support pre-biased output startup?
Yes, the ISL78206AVEZ-T7A supports pre-biased output startup, allowing safe turn-on when the output voltage is already present (e.g., during hot-swap or rail sequencing). This prevents reverse current flow and output voltage overshoot, as confirmed in Figure 13 of the FN8618 datasheet.
How is the switching frequency programmed on the ISL78206AVEZ-T7A?
The ISL78206AVEZ-T7A switching frequency is programmed using a resistor (RFS) from the FS pin to GND. Equation 2 in the datasheet defines RFS = 145000/(FS − 16), yielding 200kHz–2.2MHz range. Leaving FS unconnected, tied to VCC, or grounded defaults to 500kHz operation.
What protection features does the ISL78206AVEZ-T7A include?
The ISL78206AVEZ-T7A includes cycle-by-cycle overcurrent protection with hiccup mode, overvoltage (110%/120% trip), undervoltage (90% trip), overtemperature (160°C trip), and power-good monitoring with 128-cycle delay. All protections are fully integrated and require no external components.
Is the ISL78206AVEZ-T7A pin-compatible with any alternative controllers?
Yes, the ISL78206AVEZ-T7A is pin-to-pin compatible with the ISL78201AVEZ-T7A boost-buck controller. Both use the same 20 Ld HTSSOP package and share identical pin functions except for functional differences in topology support and internal architecture.
ISL78206AVEZ-T7A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width) 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):
- 3V
- Voltage - Input (Max):
- 40V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 38V
- Current - Output:
- 2.5A
- Frequency - Switching:
- 200kHz ~ 2.2MHz
- Synchronous Rectifier:
- Both
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-HTSSOP
ISL78206AVEZ-T7A FAQ
1.How can I place an order for ISL78206AVEZ-T7A through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL78206AVEZ-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 ISL78206AVEZ-T7A reliable?
The price and inventory of ISL78206AVEZ-T7A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL78206AVEZ-T7A is usually 5 days.
3.What payment methods are accepted for ISL78206AVEZ-T7A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL78206AVEZ-T7A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL78206AVEZ-T7A?
ISL78206AVEZ-T7A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL78206AVEZ-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 ISL78206AVEZ-T7A?
For technical support, including ISL78206AVEZ-T7A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL78206AVEZ-T7A requirements.
6.How does Aetrix verify that ISL78206AVEZ-T7A is sourced from the original manufacturer or authorized distributors?
All ISL78206AVEZ-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 ISL78206AVEZ-T7A meets industry standards.
7.What is the process for return or replacement of ISL78206AVEZ-T7A?
All ISL78206AVEZ-T7A units undergo pre-shipment inspection (PSI). If there is an issue with ISL78206AVEZ-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 ISL78206AVEZ-T7A part is unused and in its original packaging.
Return procedure for ISL78206AVEZ-T7A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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