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Renesas ISL80019AFRZ-T7A
- Part No.:
- ISL80019AFRZ-T7A
- Manufacturer:
- Renesas
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
ISL80019AFRZ-T7A.pdf
- Description:
- IC REG BUCK ADJ 1.5A 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,230
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Product details
Overview
ISL80019AFRZ-T7A from Renesas (formerly Intersil) is a monolithic synchronous buck regulator delivering up to 1.5A continuous output current from a 2.7V–5.5V input, operating at 2MHz switching frequency with internal/external compensation and selectable PFM/PWM light-load modes. It integrates low-rDS(ON) PMOS/NMOS FETs, eliminates boot capacitor requirement, and supports 100% duty cycle operation at 1MHz (not applicable here), targeting FPGA core voltage regulation in space-constrained industrial embedded systems.
For engineers reviewing the ISL80019AFRZ-T7A datasheet, ISL80019AFRZ-T7A pinout, ISL80019AFRZ-T7A application, or ISL80019AFRZ-T7A equivalent, key selection criteria include its 2MHz fixed-frequency operation, -40°C to +125°C extended temperature rating, 8-pin 2mm×2mm TDFN package with exposed thermal pad, and integrated overcurrent/thermal/UVLO/OVP protections for robust point-of-load conversion.
Technical Context
This device uses peak current-mode control architecture with slope compensation (900mV/Ts) for stability across wide duty cycles and load transients. Its 2MHz nominal switching frequency enables use of sub-3.3µH inductors while maintaining fast transient response-critical for FPGA and SoC core rails requiring tight voltage regulation under dynamic load steps.
The PMOS high-side switch eliminates boot capacitor dependency, simplifying layout and reducing BOM count. Internal compensation (via COMP tied to VIN) uses a 27pF/200kΩ network; external compensation allows tuning for specific output capacitor ESR and stability margins in demanding applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VIN Range | 2.7V to 5.5V - supports single-cell Li-ion, USB, and 3.3V/5V system rails without pre-regulation. |
| IOUT Max | 1.5A continuous - sufficient for low-power FPGA I/O banks or microcontroller cores with burst loads. |
| fSW | 2MHz (±15%) - enables compact 1.0–3.3µH inductors and reduces output ripple energy in high-frequency bands. |
| VFB | 0.600V ±5mV - sets output voltage via resistor divider; enables precise 0.6V–5.5V adjustable regulation. |
| Efficiency Peak | Up to 95% - achieved at mid-load (e.g., 1A @ 1.8V out, 3.3V in, PFM mode), minimizing thermal stress in sealed enclosures. |
| Thermal Shutdown | 150°C with 25°C hysteresis - protects against sustained overload or poor PCB thermal design without latch-up. |
| Quiescent Current | 35µA (PFM, no load) - extends battery life in always-on subsystems like sensor interfaces or real-time clocks. |
Pinout & Package
Package: 8-pin 2mm × 2mm TDFN with exposed thermal pad (T-PAD), RoHS-compliant, MSL3, rated for -40°C to +125°C junction temperature. Thermal resistance θJA = 71°C/W (typical).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Input power supply rail | Bias source for internal LDO and power stage; requires ≥10µF ceramic decoupling close to pin. |
| EN | Enable control input | Active-high logic (1.4V threshold); pulls PHASE low via 100Ω when disabled for controlled output discharge. |
| MODE | Light-load operation mode select | Logic high = PWM (fixed fSW); logic low = PFM (variable frequency, lower IQ); internal 1MΩ pull-down prevents floating. |
| PG | Power-good open-drain output | Asserts low during soft-start or if VOUT drops <85% or rises >115% of setpoint; includes 5MΩ internal pull-up. |
| COMP | Error amplifier output | Tied to VIN for internal compensation; connected to RC network to GND for external loop tuning. |
| FB | Voltage feedback input | Negative input of error amp; monitors output via resistor divider; used by PG and UVLO circuits. |
| PGND | Power and analog ground | Common return for power stage and signal circuitry; must connect directly to PCB ground plane. |
| PHASE | Switching node | Connects to inductor; carries high di/dt switching current; discharged via 100Ω when EN = low. |
| T-PAD | Thermal pad / power ground | Exposed copper pad (Pin 9) provides low-inductance PGND path and thermal conduction to PCB; requires thermal vias to inner ground planes. |
Key Features
| Feature | Design Value |
|---|---|
| PMOS high-side switch | Eliminates boot capacitor requirement, reducing component count and layout complexity. |
| Selectably PFM/PWM operation | Enables 35µA quiescent current in PFM for battery longevity, or fixed 2MHz PWM for EMI control and predictable noise spectrum. |
| Integrated protection suite | Includes overcurrent (2.5A typ), short-circuit, thermal shutdown (150°C), VIN UVLO (2.7V), and VOUT OVP/UVP - no external fault monitoring needed. |
| Internal/external compensation | Default internal RC (27pF/200kΩ) simplifies design; external option allows optimization for ceramic or polymer output capacitors. |
| 100% duty cycle capability (1MHz variant only) | Not applicable to ISL80019AFRZ-T7A (2MHz version), but confirms architecture supports ultra-low dropout in compatible variants. |
Applications
| Low-Power FPGA Core Supply | Industrial Sensor Node Power |
|---|---|
Use Scenario: Providing stable 1.2V/1.5A to Xilinx Spartan-7 or Intel MAX 10 FPGA core logic under variable computational load. IC Role / Device Role / Timing Role: Primary DC/DC converter regulating core voltage; delivers fast transient response (<10µs recovery) to handle logic switching bursts. Use Value: 95% peak efficiency and 35µA PFM quiescent current extend battery runtime in portable FPGA-based edge AI accelerators. | Use Scenario: Powering ultra-low-power industrial IoT nodes with ARM Cortex-M0+ MCU, MEMS accelerometer, and LoRaWAN radio. IC Role / Device Role / Timing Role: Single-chip buck regulator supplying 3.3V/1.5A to mixed-signal subsystem; operates in PFM during sleep, PWM during active transmission. Use Value: Extended -40°C to +125°C rating ensures reliability in uncontrolled environments; 2MHz switching avoids AM radio band interference. |
| Embedded Display Backlight Driver | Automotive Infotainment SoC Rail |
Use Scenario: Generating 1.8V/1.5A for LCD timing controller ICs in medical handheld displays or retail kiosks. IC Role / Device Role / Timing Role: Point-of-load regulator placed near display controller; maintains ±1% output accuracy across temperature and line/load variations. Use Value: Tight 0.600V ±5mV feedback reference enables accurate voltage setting with standard 1% resistors, reducing calibration overhead. | Use Scenario: Supplying 1.0V/1.5A to automotive-grade application processors (e.g., NXP i.MX8QuadMax) in infotainment head units. IC Role / Device Role / Timing Role: Secondary buck stage after primary 5V rail; handles rapid load transients from GPU/CPU DVFS events. Use Value: Robust overtemperature and short-circuit protection meets AEC-Q100 functional safety requirements for non-safety-critical subsystems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS6286418RTER | 2.5V–5.5V input, 1.8V fixed output, 2A max, 2.25MHz, integrated inductor option available | Fixed-output variant; lacks adjustable VFB and external compensation flexibility | Choose for simplified design where 1.8V fixed output suffices and board area is extremely constrained. |
| MP2143GJ-Z | 2.5V–5.5V input, 1.5A max, 2MHz, 0.6V reference, but only -40°C to +85°C temp range and no PFM mode | Limited thermal rating; higher quiescent current (250µA) reduces battery life in always-on use cases | Acceptable for commercial-temperature consumer devices where cost is prioritized over extended temp or ultra-low IQ. |
Compared with TPS6286418RTER and MP2143GJ-Z, the ISL80019AFRZ-T7A offers superior thermal robustness (-40°C to +125°C), lowest quiescent current (35µA), and full design flexibility via adjustable feedback and external compensation-making it optimal for industrial and automotive-adjacent embedded systems requiring long-term reliability and field-programmable voltage rails.
Availability
ISL80019AFRZ-T7A is available at Aetrix Electronics and suitable for FPGA power, industrial sensor nodes, embedded display supplies, and automotive infotainment SoC rails requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ISL80019AFRZ-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 continues to support its high-performance analog and power management portfolio for industrial, automotive, and communications markets.
The ISL80019AFRZ-T7A belongs to Renesas' compact synchronous buck regulator family designed specifically for space-constrained, thermally demanding point-of-load applications in industrial automation, test equipment, and ruggedized embedded systems.
FAQ
What is the maximum output current capability of the ISL80019AFRZ-T7A?
The ISL80019AFRZ-T7A delivers up to 1.5A of continuous output current across its full operating temperature range (-40°C to +125°C). This rating is confirmed in Table 1 of the FN7888 datasheet and validated under worst-case conditions including 5.5V input and 100% duty cycle constraints. The device maintains regulation and protection integrity at this level without derating in typical PCB layouts with adequate thermal vias to the PGND plane.
Does the ISL80019AFRZ-T7A support both PFM and PWM modes, and how is mode selected?
Yes, the ISL80019AFRZ-T7A supports both PFM (discontinuous conduction) and PWM (continuous conduction) light-load operation. Mode is selected via the MODE pin: connect to VIN (or logic high ≥2.5V) for forced PWM, or to GND (or logic low ≤0.4V) for PFM. An internal 1MΩ pull-down prevents undefined states if left unconnected, though Renesas recommends explicit biasing for deterministic behavior in the ISL80019AFRZ-T7A.
What is the switching frequency of the ISL80019AFRZ-T7A, and is it adjustable?
The ISL80019AFRZ-T7A operates at a nominal switching frequency of 2MHz, with a tolerance of ±15% (1.7–2.3MHz) over temperature and input voltage. This frequency is factory-fixed and not adjustable via external components or pins. The 2MHz rating distinguishes it from the 1MHz ISL80019FRZ-T7A variant and enables smaller magnetics and faster transient response in the ISL80019AFRZ-T7A.
Can the ISL80019AFRZ-T7A be used with external compensation, and what components are required?
Yes, the ISL80019AFRZ-T7A supports external compensation via the COMP pin. To implement external loop compensation, connect a series RC network from COMP to GND. Typical values depend on output capacitor ESR and desired phase margin; Renesas AN1803 recommends starting with CC = 1nF and RC = 100kΩ for ceramic outputs. Internal compensation (COMP tied to VIN) uses a 27pF/200kΩ network and is enabled by default in the ISL80019AFRZ-T7A.
What thermal management features does the ISL80019AFRZ-T7A include, and how is the thermal pad used?
The ISL80019AFRZ-T7A includes thermal shutdown at 150°C with 25°C hysteresis and relies on its exposed thermal pad (T-PAD, Pin 9) for heat dissipation. This pad must be soldered to a dedicated PGND copper area on the PCB with ≥4 thermal vias (0.3mm diameter) connecting to inner ground planes. Proper implementation reduces θJA from 71°C/W to ~45°C/W, enabling full 1.5A output at +85°C ambient without derating in the ISL80019AFRZ-T7A.
ISL80019AFRZ-T7A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.7V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- 5.5V
- Current - Output:
- 1.5A
- Frequency - Switching:
- 2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TDFN-EP (2x2)
ISL80019AFRZ-T7A FAQ
1.How can I place an order for ISL80019AFRZ-T7A through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL80019AFRZ-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 ISL80019AFRZ-T7A reliable?
The price and inventory of ISL80019AFRZ-T7A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL80019AFRZ-T7A is usually 5 days.
3.What payment methods are accepted for ISL80019AFRZ-T7A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL80019AFRZ-T7A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL80019AFRZ-T7A?
ISL80019AFRZ-T7A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL80019AFRZ-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 ISL80019AFRZ-T7A?
For technical support, including ISL80019AFRZ-T7A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL80019AFRZ-T7A requirements.
6.How does Aetrix verify that ISL80019AFRZ-T7A is sourced from the original manufacturer or authorized distributors?
All ISL80019AFRZ-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 ISL80019AFRZ-T7A meets industry standards.
7.What is the process for return or replacement of ISL80019AFRZ-T7A?
All ISL80019AFRZ-T7A units undergo pre-shipment inspection (PSI). If there is an issue with ISL80019AFRZ-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 ISL80019AFRZ-T7A part is unused and in its original packaging.
Return procedure for ISL80019AFRZ-T7A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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