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Renesas ISL80019AIRZ-T7A
- Part No.:
- ISL80019AIRZ-T7A
- Manufacturer:
- Renesas
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
ISL80019AIRZ-T7A.pdf
- Description:
- IC REG BUCK ADJ 1.5A 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:270
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Product details
Overview
ISL80019AIRZ-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 options and selectable PFM/PWM light-load operation. It integrates low-rDS(ON) PMOS/NMOS FETs, eliminates boot capacitor requirement, and supports 100% duty cycle at 1MHz (not applicable here), targeting FPGA core voltage regulation in space-constrained consumer electronics.
For engineers reviewing the ISL80019AIRZ-T7A datasheet, ISL80019AIRZ-T7A pinout, ISL80019AIRZ-T7A application, or ISL80019AIRZ-T7A equivalent, this page provides verified technical context, validated pin functions, confirmed 2MHz operation and 1.5A capability, thermal pad layout guidance, and real-world alternative selection criteria for point-of-load DC/DC design.
Technical Context
The ISL80019AIRZ-T7A uses peak current-mode control with slope compensation (900mV/Ts) for stability across 2MHz operation, enabling fast transient response and pulse-by-pulse overcurrent protection. Its integrated PMOS high-side switch eliminates boot capacitor dependency, reducing BOM count and simplifying layout.
It supports dual-mode operation: PFM mode delivers ultra-low quiescent current (35µA typical) for battery-sensitive applications, while PWM mode ensures fixed-frequency noise control and RF immunity. Protection features include overcurrent (2.5A typ), short-circuit, thermal shutdown (150°C), UVLO (2.7V rising), and VOUT overvoltage (115% threshold).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 1.5A continuous - sufficient for mid-power FPGA I/O banks or SoC auxiliary rails without derating. |
| Switching Frequency | 2MHz - enables use of sub-2.2µH inductors and compact ceramic output capacitors (e.g., 22µF ×3). |
| Input Voltage Range | 2.7V to 5.5V - compatible with single-cell Li-ion, USB 5V, or regulated 3.3V system rails. |
| Feedback Voltage | 0.600V ±5mV - sets precise output via resistor divider; supports 0.6V–5.5V adjustable VOUT. |
| Quiescent Current | 35µA (PFM, no load) - extends battery runtime in always-on subsystems like set-top box standby logic. |
| Efficiency Peak | 95% - achieved at mid-load (e.g., 1A @ 1.8V out, 3.3V in), minimizing thermal stress in 2mm×2mm footprint. |
| Thermal Resistance | θJA = 71°C/W - requires thermal vias under exposed pad to sustain 1.5A continuous in +85°C ambient. |
Pinout & Package
ISL80019AIRZ-T7A is housed in an 8-pin, 2mm×2mm TDFN package with exposed thermal pad (Pin 9) for enhanced heat dissipation. The package is RoHS-compliant, Pb-free, and MSL3 rated.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 1) | Input power supply rail | Supplies both power stage and internal LDO; requires ≥10µF ceramic decoupling placed adjacent to pin. |
| EN (Pin 2) | Enable control input | Active-high logic (≥1.4V); pulls PHASE low via 100Ω when disabled to discharge output. |
| MODE (Pin 3) | Light-load operation mode select | Logic high = PWM (fixed 2MHz); logic low = PFM (variable frequency, 35µA IQ); internal 1MΩ pull-down. |
| PG (Pin 4) | Power-good open-drain output | Asserts low during soft-start or if VFB < 85% or >115%; includes 5MΩ internal pull-up. |
| COMP (Pin 5) | Error amplifier output / compensation node | Tied to VIN for internal compensation; connected to RC network for external loop tuning. |
| FB (Pin 6) | Feedback input | Senses output via resistor divider; used by PG, UVLO, and OVP circuits - accuracy critical for regulation. |
| PGND (Pin 7) | Power and analog ground | Must connect directly to PCB ground plane; separates noisy power return from signal reference. |
| PHASE (Pin 8) | Switching node | Connects to inductor; carries high di/dt; discharged via 100Ω when EN = low. |
Key Features
| Feature | Design Value |
|---|---|
| PMOS high-side switch | Eliminates boot capacitor requirement, reducing component count and board area in compact designs. |
| Selectably PFM/PWM operation | Enables dynamic trade-off between ultra-low IQ (35µA) for battery life and EMI-controlled fixed frequency (2MHz). |
| Internal/external compensation | Supports rapid prototyping (internal) or optimized transient response (external RC network on COMP pin). |
| Integrated overcurrent & thermal protection | Peak current limit of 2.5A (typ) and thermal shutdown at 150°C prevent damage during fault conditions. |
| 2mm×2mm TDFN with thermal pad | Delivers 1.5A in <0.10 in² footprint; thermal vias to PGND plane required for full current capability. |
Applications
| FPGA Core Power | Set-Top Box SoC Rails |
|---|---|
|
Use Scenario: Regulating 1.2V core voltage for Xilinx Artix-7 or Intel Cyclone V FPGA logic fabric. IC Role / Device Role / Timing Role: Primary synchronous buck converter providing tightly regulated, low-noise core supply with fast load-step response. Use Value: 2MHz operation allows 1.5µH inductor and 66µF total ceramic capacitance, fitting within tight BGA escape routing zones. |
Use Scenario: Generating 1.8V I/O supply for Broadcom BCM7xxx or STiH41x media processors in cable modems. IC Role / Device Role / Timing Role: Secondary buck regulator delivering stable I/O rail with PFM mode extending standby battery life. Use Value: 35µA quiescent current in PFM mode reduces system standby power by >40% versus fixed-frequency alternatives. |
| LCD Panel Bias Supply | HDD Preamp Voltage Rail |
|
Use Scenario: Providing 3.3V bias for TFT-LCD source driver ICs in portable monitors or smart displays. IC Role / Device Role / Timing Role: Compact, high-efficiency step-down regulator powering display interface circuitry with minimal thermal footprint. Use Value: 95% peak efficiency at 1A load minimizes self-heating near temperature-sensitive LCD glass. |
Use Scenario: Supplying 2.5V analog rail to HDD read/write channel preamplifiers requiring low ripple and fast transient recovery. IC Role / Device Role / Timing Role: Low-noise, high-bandwidth buck converter with 2MHz PWM mode suppressing switching artifacts in analog signal paths. Use Value: 200ns minimum on-time and peak current-mode control ensure <50µs recovery from 1A load steps, preserving data integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62864DRLR | 2A rating, 2.5V–5.5V input, 1.8V fixed output (non-adjustable), 4mm² QFN vs. 4mm² TDFN | Fixed-output variant only; lacks FB adjustability and MODE pin flexibility | Choose for cost-sensitive, fixed-VOUT designs where 1.5A margin is acceptable and layout space matches. |
| MP2143GJ-Z | 1.5A, 2.5V–6V input, 2MHz, but uses NMOS high-side requiring boot capacitor and external compensation only | Higher BOM count (boot cap, compensation network); less suitable for ultra-compact layouts | Prefer when wider input range (up to 6V) is mandatory and boot capacitor placement is feasible. |
Compared with TPS62864DRLR, ISL80019AIRZ-T7A offers adjustable output and PFM/PWM selection at identical 2MHz/1.5A specs; versus MP2143GJ-Z, it eliminates boot capacitor dependency and supports internal compensation - critical for space-constrained, low-component-count designs.
Availability
ISL80019AIRZ-T7A is available at Aetrix Electronics and suitable for FPGA power, set-top box SoC rails, and LCD panel bias supplies requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for ISL80019AIRZ-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 acquired Intersil in 2017 and maintains its high-performance analog and power management portfolio, emphasizing reliability, thermal efficiency, and integration for embedded systems.
The ISL80019AIRZ-T7A belongs to Renesas' compact synchronous buck regulator family, designed specifically for space-constrained, battery-aware, and thermally sensitive point-of-load applications in consumer and computing electronics.
FAQ
What is the maximum output current capability of the ISL80019AIRZ-T7A?
The ISL80019AIRZ-T7A delivers up to 1.5A of continuous output current across its full operating temperature range (-40°C to +85°C). This rating assumes proper PCB layout with thermal vias under the exposed pad and adequate input/output capacitance. At 2A, the device enters current-limit protection - confirming 1.5A as its validated continuous output specification per Table 1 in FN7888 Rev 4.00.
Does the ISL80019AIRZ-T7A require an external boot capacitor?
No, the ISL80019AIRZ-T7A does not require an external boot capacitor because it integrates a PMOS high-side switch. Unlike NMOS-based buck regulators, the PMOS architecture eliminates the need for charge-pump or bootstrap circuitry, reducing component count and simplifying layout - a key advantage confirmed in the "Features" section of the FN7888 datasheet.
How does the MODE pin affect efficiency and noise performance of the ISL80019AIRZ-T7A?
When the MODE pin is pulled low (PFM mode), the ISL80019AIRZ-T7A reduces switching frequency under light loads, achieving 35µA quiescent current and maximizing battery life - ideal for standby operation. When pulled high (PWM mode), it maintains fixed 2MHz operation, ensuring predictable EMI spectrum and lower output voltage ripple, critical for noise-sensitive analog circuits.
Can the ISL80019AIRZ-T7A operate with 100% duty cycle?
No, the ISL80019AIRZ-T7A does not support 100% duty cycle operation. That feature is explicitly limited to the 1MHz variants (ISL80019 and ISL8002) per Table 1 and the "100% Duty Cycle (1MHz Version)" section on page 18 of FN7888. The ISL80019AIRZ-T7A operates at 2MHz and has a minimum off-time constraint that prevents 100% conduction.
What thermal design considerations apply to the ISL80019AIRZ-T7A's exposed pad?
The ISL80019AIRZ-T7A's exposed thermal pad (Pin 9) must be soldered to a dedicated PGND copper plane with ≥4 thermal vias (0.3mm diameter, filled or capped) connecting to inner-layer ground planes. Per datasheet page 7, θJA = 71°C/W assumes this configuration; omitting vias risks exceeding junction temperature limits at 1.5A continuous load in +85°C ambient.
ISL80019AIRZ-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)
ISL80019AIRZ-T7A FAQ
1.How can I place an order for ISL80019AIRZ-T7A through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL80019AIRZ-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 ISL80019AIRZ-T7A reliable?
The price and inventory of ISL80019AIRZ-T7A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL80019AIRZ-T7A is usually 5 days.
3.What payment methods are accepted for ISL80019AIRZ-T7A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL80019AIRZ-T7A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL80019AIRZ-T7A?
ISL80019AIRZ-T7A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL80019AIRZ-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 ISL80019AIRZ-T7A?
For technical support, including ISL80019AIRZ-T7A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL80019AIRZ-T7A requirements.
6.How does Aetrix verify that ISL80019AIRZ-T7A is sourced from the original manufacturer or authorized distributors?
All ISL80019AIRZ-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 ISL80019AIRZ-T7A meets industry standards.
7.What is the process for return or replacement of ISL80019AIRZ-T7A?
All ISL80019AIRZ-T7A units undergo pre-shipment inspection (PSI). If there is an issue with ISL80019AIRZ-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 ISL80019AIRZ-T7A part is unused and in its original packaging.
Return procedure for ISL80019AIRZ-T7A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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