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Renesas ISL78200AVEZ-T
- Part No.:
- ISL78200AVEZ-T
- Manufacturer:
- Renesas
- Package:
- 20-TSSOP (0.173", 4.40mm Width) Exposed Pad
- Datasheet:
-
ISL78200AVEZ-T.pdf
- Description:
- IC REG BCK BST ADJ 2.5A 20HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,527
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Product details
Overview
ISL78200AVEZ-T from Renesas Electronics (formerly Intersil) is a synchronous buck controller with integrated 90mΩ high-side MOSFET and low-side gate driver, supporting buck, non-synchronous buck, and two-stage boost-buck topologies. It delivers 2.5A continuous output at 5V with 8–36V input, 500kHz switching, and +85°C ambient in still air. Designed for automotive power regulation, it operates across 3V–40V input and features AEC-Q100 qualification.
For engineers reviewing the ISL78200AVEZ-T datasheet, ISL78200AVEZ-T pinout, ISL78200AVEZ-T application, or ISL78200AVEZ-T equivalent, key selection criteria include its programmable 200kHz–2.2MHz frequency, ±1% output voltage accuracy, cycle-by-cycle overcurrent protection with hiccup mode, PFM/PWM mode selection, and 20-lead HTSSOP package with thermal pad.
Technical Context
The ISL78200AVEZ-T implements peak current mode control with integrated slope compensation and a 5µA soft-start current source. Its dual LDO architecture-main bias LDO (VIN-referenced) and auxiliary LDO (AUXVCC-referenced)-enables VCC switchover to reduce quiescent loss at light load and high VIN.
It supports three operational topologies via pin-strapping: synchronous buck (LGATE drives external low-side FET), non-synchronous buck (LGATE tied to VCC), and boost-buck (EXT_BOOST >200mV enables boost pre-regulator extending input down to 2.5V). Protection includes temperature-compensated current sensing, frequency foldback during overload, and latching/non-latching overvoltage thresholds.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3V to 40V - supports wide automotive battery and industrial bus inputs including cold-crank and load-dump transients. |
| Output Current | 2.5A continuous - verified at 5V VOUT, 8–36V VIN, 500kHz, +85°C ambient, still air; max limited by die temp ≤+125°C. |
| Switching Frequency | 200kHz to 2.2MHz - programmable via FS resistor; also supports external synchronization with 180° phase shift capability. |
| Voltage Regulation Accuracy | ±1% - tight tolerance referenced to internal 0.8V bandgap, enabling stable I/O and processor supply rails. |
| Quiescent Current | 300µA (PFM, no load); 180µA (PFM, no load, AUXVCC = VOUT) - enables ultra-low-power operation in always-on automotive modules. |
| Overcurrent Protection | Programmable 3.0–4.2A threshold with hiccup mode - prevents thermal runaway under sustained short-circuit conditions. |
| Operating Temperature | −40°C to +105°C - qualified per AEC-Q100 Grade 2, suitable for under-hood and infotainment applications. |
Pinout & Package
ISL78200AVEZ-T is housed in a thermally enhanced 20-lead HTSSOP package (MDP0048) with exposed thermal pad (Pin 21) requiring PCB ground plane connection for effective heat dissipation (θJA = 35°C/W, θJC = 3.5°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PGND (1) | Power ground return | Low-impedance path for high-current switching loop; must be connected to power ground plane, separate from SGND. |
| BOOT (2) | High-side gate driver bias | Supplies floating voltage to drive internal N-channel MOSFET; requires 1µF ceramic capacitor to PHASE. |
| VIN (3,4) | Main input supply | Connects to input rail and drain of integrated 90mΩ high-side MOSFET; supports 3–40V operation. |
| SGND (5) | Analog/Control ground | Reference for FB, COMP, MODE, ILIMIT, and other signal pins; must be star-connected to avoid noise coupling. |
| VCC (6) | Main LDO output | 4.5V ±0.3V regulated supply for IC core and drivers; requires ≥4.7µF ceramic decoupling to PGND. |
| AUXVCC (7) | Auxiliary LDO input / Boost OVP sense | In buck mode: powers auxiliary LDO to reduce dropout loss; in boost mode: monitors boost output via resistor divider (trip at 0.8V). |
| EN (8) | Enable control | Active-high logic input (VENH ≥2V); pull low to disable IC and reduce shutdown current to ≤3µA. |
| FS (9) | Frequency select | Resistor-to-GND sets oscillator frequency from 200kHz–2.2MHz; open/VCC/GND defaults to 500kHz. |
| SS (10) | Soft-start timing | External capacitor charged by 5µA current source sets ramp time; also used for tracking and hiccup recovery. |
| FB (11) | Voltage feedback input | Inverting input of error amplifier; senses output via resistor divider; monitors OV/UV with 3% hysteresis. |
| COMP (12) | Error amplifier output | Compensation node for loop stability; connects RC network between COMP and FB for type-II/III compensation. |
| ILIMIT (13) | Current limit programming | Resistor-to-GND sets OCP threshold from default 3.6A; open/VCC/GND yields 3.0–4.2A range. |
| MODE (14) | PFM/PWM selection | Pull to GND = forced PWM; float/VCC = PFM (default boundary 700mA); resistor-to-GND programs boundary current. |
| PGOOD (15) | Power-good indicator | Open-drain output with 1000-cycle delay on startup; asserts low on OV/UV or EN deactivation. |
| PHASE (16,17) | Switch node | Connects to inductor; tied to source of internal high-side MOSFET; critical for layout low-inductance routing. |
| EXT_BOOST (18) | Boost enable / battery monitor | Detects >200mV to latch into boost mode; in boost, monitors input via resistor divider (0.8V trip). |
| SYNC (19) | Frequency synchronization | Accepts external clock or synchronizes multiple ISL78200s with automatic 180° phase shift between master/slave. |
| LGATE (20) | Low-side gate driver output | Drives external N-MOSFET in synchronous buck; tie to VCC pre-startup to disable in non-synchronous mode. |
| Pad (21) | Thermal pad | Electrically isolated copper pad; must be soldered to large PCB ground plane for thermal performance. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 90mΩ high-side MOSFET | Eliminates external high-side switch and associated gate drive complexity while maintaining 2.5A capability at 5V output. |
| Three topology support | Single IC supports synchronous buck, non-synchronous buck (diode-based), and boost-buck - reducing BOM count across vehicle platforms. |
| VCC switchover to AUXVCC | Reduces internal LDO dropout loss by powering VCC from regulated output instead of high VIN, improving light-load efficiency by up to 5% at 40V input. |
| Hiccup-mode overcurrent protection | Enters controlled restart cycle upon sustained overcurrent, limiting average power dissipation and preventing thermal damage without manual reset. |
| AEC-Q100 Grade 2 qualification | Validated for automotive environments including −40°C to +105°C operation, ESD robustness (2kV HBM), and latch-up immunity (100mA). |
Applications
| Automotive Infotainment Power Supply | ADAS Camera Module Regulator |
|---|---|
Use Scenario: Powers SoC, DDR memory, and display interface in head-unit or digital cluster with 12V/24V battery input and strict EMC requirements. IC Role / Device Role / Timing Role: Primary synchronous buck controller delivering 1.1V/3.3V/5V rails with programmable frequency to avoid AM-band interference. Use Value: Integrated high-side FET and low EMI design reduce component count and layout area; PFM mode extends battery runtime in parked mode. | Use Scenario: Supplies image sensor and ISP in rear-view or surround-view camera with cold-crank resilience and low quiescent current. IC Role / Device Role / Timing Role: Non-synchronous buck regulator using internal high-side FET and external Schottky diode for cost-sensitive, space-constrained module. Use Value: 3V minimum start-up and 40V absolute max rating withstand battery transients; 180µA PFM quiescent current meets ISO 16750-2 sleep-mode requirements. |
| Industrial 24V Bus Converter | Telematics LTE Modem Power |
Use Scenario: Generates 5V/3.3V from 24V industrial bus for PLC I/O modules operating in harsh ambient temperatures. IC Role / Device Role / Timing Role: Synchronous buck controller with thermal pad and AEC-Q100 reliability, supporting forced PWM for constant-frequency EMI control. Use Value: Robust cycle-by-cycle OCP and overtemperature shutdown prevent field failures; HTSSOP package enables compact heatsink-less design. | Use Scenario: Powers LTE modem and GNSS receiver in vehicle telematics unit requiring fast load transient response and low-noise 1.8V/3.3V supplies. IC Role / Device Role / Timing Role: Dual-rail buck controller using one ISL78200AVEZ-T for main 3.3V rail and cascaded stage for 1.8V, leveraging boost-buck capability. Use Value: Programmable frequency synchronization eliminates beat frequencies between multiple converters; ±1% regulation ensures modem RF stability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL78201AVEZ-T | Pin-compatible upgrade with improved thermal performance (lower RDS(ON)), higher 3.5A current rating, and extended 4.5–60V input range. | Supports higher-power applications (e.g., ADAS domain controllers) and wider input transients (e.g., 48V mild-hybrid systems). | Select ISL78201AVEZ-T for new designs requiring higher current or broader input voltage; ISL78200AVEZ-T remains valid for legacy 2.5A/40V use cases. |
| MPQ4312-AEC1 | Monolithic 3A buck converter (no external FET needed), 3.8–36V input, 500kHz fixed frequency, but lacks boost-buck topology and AUXVCC switchover. | Better suited for cost-sensitive, single-topology applications where 2.5A is sufficient and boost extension is unnecessary. | Choose MPQ4312-AEC1 when board space and BOM count are prioritized over multi-topology flexibility and ultra-low IQ. |
Compared with ISL78201AVEZ-T, the ISL78200AVEZ-T offers lower cost and proven qualification for existing 2.5A designs, while MPQ4312-AEC1 trades topology versatility for integration density-making ISL78200AVEZ-T optimal where boost-buck operation or VCC switchover is required.
Availability
ISL78200AVEZ-T is available at Aetrix Electronics and suitable for automotive infotainment, ADAS camera modules, and industrial 24V bus power applications requiring stable component supply, AEC-Q100 compliance, and long-term lifecycle support.
Supply support for ISL78200AVEZ-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 Corporation is a global semiconductor leader delivering microcontrollers, analog power, and SoC solutions for automotive, industrial, and IoT markets.
The ISL78200AVEZ-T belongs to Renesas' automotive-grade power management portfolio, designed specifically for robust, high-efficiency DC-DC conversion in safety-critical vehicle subsystems.
FAQ
What is the maximum continuous output current of the ISL78200AVEZ-T?
The ISL78200AVEZ-T delivers 2.5A continuous output current under specified conditions: 5V VOUT, 8–36V VIN, 500kHz switching frequency, +85°C ambient temperature, and still air convection. Actual maximum current depends on thermal design, board layout, and ambient conditions-die temperature must not exceed +125°C. The device uses cycle-by-cycle current limiting with programmable threshold (3.0–4.2A) and hiccup mode for fault recovery.
Does the ISL78200AVEZ-T support boost-buck topology, and how is it enabled?
Yes, the ISL78200AVEZ-T supports boost-buck (two-stage) operation. It is enabled by applying >200mV to the EXT_BOOST pin after VCC power-on reset, which latches the controller into boost mode. In this mode, EXT_BOOST monitors boost input via resistor divider (trip at 0.8V), and LGATE drives the boost MOSFET. This extends usable input voltage down to 2.5V or lower, enabling operation during automotive cold-crank events.
How does the AUXVCC switchover function improve efficiency in the ISL78200AVEZ-T?
The ISL78200AVEZ-T reduces quiescent power loss by switching VCC bias from the main VIN-referenced LDO to an auxiliary LDO powered from VOUT once the output reaches the rising threshold (2.97–3.2V). This lowers internal dropout voltage-especially beneficial at high VIN (e.g., 40V)-reducing power dissipation and improving light-load efficiency. The switchover is automatic and reversible, reverting to main LDO during faults or UV events.
What protection features are integrated into the ISL78200AVEZ-T?
The ISL78200AVEZ-T integrates comprehensive protections: cycle-by-cycle overcurrent with frequency foldback and hiccup mode, overvoltage (latching and non-latching modes), overtemperature (trip at +155°C, recover at +140°C), and undervoltage lockout. PGOOD provides open-drain status signaling with 1000-cycle delay. All protections are hardware-based and operate independently of external components, ensuring reliable fault handling in automotive environments.
Is the ISL78200AVEZ-T pin-compatible with any newer Renesas parts?
Yes, the ISL78200AVEZ-T is pin-compatible with the ISL78201AVEZ-T, a direct functional upgrade offering lower RDS(ON) (75mΩ), higher 3.5A output current, extended 4.5–60V input range, and improved thermal resistance. Both share identical 20-lead HTSSOP packaging and pinout, enabling drop-in replacement in existing layouts where higher performance or wider input range is needed.
ISL78200AVEZ-T 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:
- Obsolete
- Function:
- Step-Up, Step-Down, Step-Up/Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck, Boost, Buck-Boost
- 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
ISL78200AVEZ-T FAQ
1.How can I place an order for ISL78200AVEZ-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL78200AVEZ-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 ISL78200AVEZ-T reliable?
The price and inventory of ISL78200AVEZ-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL78200AVEZ-T is usually 5 days.
3.What payment methods are accepted for ISL78200AVEZ-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL78200AVEZ-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL78200AVEZ-T?
ISL78200AVEZ-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL78200AVEZ-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 ISL78200AVEZ-T?
For technical support, including ISL78200AVEZ-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL78200AVEZ-T requirements.
6.How does Aetrix verify that ISL78200AVEZ-T is sourced from the original manufacturer or authorized distributors?
All ISL78200AVEZ-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 ISL78200AVEZ-T meets industry standards.
7.What is the process for return or replacement of ISL78200AVEZ-T?
All ISL78200AVEZ-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL78200AVEZ-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 ISL78200AVEZ-T part is unused and in its original packaging.
Return procedure for ISL78200AVEZ-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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