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Renesas ISL80019IRZ-T7A
- Part No.:
- ISL80019IRZ-T7A
- Manufacturer:
- Renesas
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
ISL80019IRZ-T7A.pdf
- Description:
- IC REG BUCK ADJ 1.5A 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:100
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Product details
Overview
ISL80019IRZ-T7A from Renesas (formerly Intersil) is a monolithic synchronous buck DC/DC regulator delivering up to 1.5A continuous output current from a 2.7V–5.5V input, with fixed 1MHz switching frequency, 0.6V feedback reference, and integrated PMOS/NMOS power stage in an 8-pin 2mm×2mm TDFN package. It enables compact point-of-load conversion for FPGA, LCD panels, and set-top boxes.
For engineers reviewing the ISL80019IRZ-T7A datasheet, ISL80019IRZ-T7A pinout, ISL80019IRZ-T7A application, or ISL80019IRZ-T7A equivalent, key selection criteria include its 1.5A/1MHz rating, internal/external compensation flexibility, PFM/PWM mode selectability, thermal shutdown protection, and 2mm×2mm footprint-critical for space-constrained embedded power designs.
Technical Context
The ISL80019IRZ-T7A uses peak current-mode control with slope compensation (900mV/Ts) for stable operation across wide duty cycles, including 100% duty cycle at 1MHz with only 200mV dropout at 2A. Its PMOS high-side switch eliminates the need for a boot capacitor, reducing external component count.
It supports dual operating modes: PFM for ultra-low quiescent current (35µA typical) at light loads, and PWM for low-noise, fixed-frequency regulation under full load. Protection features include overcurrent (2.5A typ), short-circuit, thermal shutdown (150°C), UVLO (2.7V rising), and VOUT overvoltage/undervoltage monitoring via the FB pin.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 1.5A continuous - supports mid-power digital loads like FPGA I/O banks or LCD bias rails without external current boosting. |
| Switching Frequency | 1MHz fixed - enables use of small 1.0–3.3µH inductors and reduces EMI filtering complexity vs lower-frequency alternatives. |
| Input Voltage Range | 2.7V to 5.5V - compatible with single-cell Li-ion (3.0–4.2V), USB 5V, and 3.3V/5V system rails. |
| Feedback Reference | 0.600V ±5mV - allows precise output setting down to 0.6V using standard resistor dividers; tight tolerance minimizes output error. |
| Quiescent Current | 35µA typical in PFM mode - extends battery runtime in always-on subsystems such as remote control receivers or sensor wake-up circuits. |
| Efficiency Peak | Up to 95% - achieved at mid-load (e.g., 1.2A @ 1.8VOUT/3.3VIN), reducing thermal stress and enabling fanless enclosure designs. |
| Thermal Resistance | θJA = 71°C/W - requires minimal PCB copper area (with thermal vias to PGND) to maintain <125°C junction under full load at +85°C ambient. |
Pinout & Package
ISL80019IRZ-T7A is housed in an 8-pin, 2mm × 2mm TDFN package with exposed thermal pad (Pin 9, T-PAD), optimized for low-inductance layout and efficient heat transfer to the PCB ground plane.
| 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 to suppress high-frequency ripple. |
| EN (Pin 2) | Enable control input | Active-high logic (≥1.4V); internal 100Ω discharge path on disable ensures controlled output ramp-down during shutdown. |
| MODE (Pin 3) | Operating mode selector | Tie to VIN for PWM (fixed 1MHz), GND for PFM (variable frequency); internal 1MΩ pull-down prevents floating state. |
| PG (Pin 4) | Power-good open-drain output | Asserts high after soft-start completes and VOUT reaches 90–120% of target; used for sequencing or fault indication. |
| COMP (Pin 5) | Error amplifier output | Connect to VIN for internal compensation (27pF/200kΩ network); add RC to GND for external loop tuning. |
| FB (Pin 6) | Feedback voltage sense | Monitors output via resistor divider; sets VOUT = 0.6V × (1 + R1/R2); also feeds UVLO/OVP comparators. |
| PGND (Pin 7) | Power and analog ground | Must connect directly to low-impedance PCB ground plane; separates noisy power return from sensitive analog references. |
| PHASE (Pin 8) | Switching node | Drives external inductor; carries high di/dt current; layout must minimize loop area to reduce EMI and voltage spikes. |
Key Features
| Feature | Design Value |
|---|---|
| PMOS high-side switch | Eliminates boot capacitor requirement, simplifying layout and reducing BOM count by one critical passive component. |
| 100% duty-cycle capability | Enables dropout operation down to 200mV at 2A, supporting applications where input may dip close to output voltage (e.g., Li-ion battery end-of-discharge). |
| Selectible PFM/PWM mode | PFM delivers 35µA IQ for battery longevity; PWM ensures predictable EMI profile and fast transient response for noise-sensitive systems. |
| Integrated protection suite | Includes overcurrent (2.5A typ), thermal shutdown (150°C), UVLO (2.7V), and output OVP/UVP - reduces need for external supervision ICs. |
| Internal/external compensation | Default internal RC network (27pF/200kΩ) enables quick bring-up; external option allows fine-tuning for custom inductor/capacitor combinations. |
Applications
| FPGA Core Power | LCD Panel Bias Supply |
|---|---|
|
Use Scenario: Providing clean, tightly regulated 1.2V or 1.5V to FPGA core logic banks in portable test equipment. IC Role / Device Role / Timing Role: Primary synchronous buck regulator delivering 1.5A peak current with <±1% output accuracy and fast load-step response. Use Value: Enables reliable FPGA configuration and operation across temperature and input voltage variation, with no external current-sense or protection components required. |
Use Scenario: Generating 3.3V or 5V bias for TFT-LCD source/gate drivers in industrial HMIs. IC Role / Device Role / Timing Role: Compact, thermally robust DC/DC converter powering display subsystems from 5V system rail. Use Value: 2mm×2mm footprint saves board space; 95% efficiency minimizes heat near sensitive analog display circuitry. |
| Set-Top Box SoC Rail | Cable Modem PHY Supply |
|
Use Scenario: Supplying 1.8V to ARM-based SoC application processors in consumer STBs with strict standby power budgets. IC Role / Device Role / Timing Role: Low-IQ (35µA) PFM-mode regulator maintaining SoC readiness during deep sleep states. Use Value: Meets Energy Star standby requirements while enabling instant wake-up without reinitializing power rails. |
Use Scenario: Delivering 2.5V or 3.3V to DOCSIS-compliant cable modem PHY ICs subject to bursty data traffic. IC Role / Device Role / Timing Role: High-transient-response buck regulator handling rapid 0→1.5A load steps during packet transmission bursts. Use Value: 1MHz switching and peak-current-mode control limit output voltage deviation to <±30mV during 1A/µs transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL80019AIRZ-T7A | Same package and pinout, but rated for 2MHz switching frequency and 1.5A output; higher FSW enables smaller inductors but increases switching loss at full load. | Better suited for ultra-compact designs where board area is more constrained than thermal budget; less optimal for high-efficiency battery operation. | Select ISL80019AIRZ-T7A only if 2MHz operation is required for size reduction and EMI can be managed; otherwise, ISL80019IRZ-T7A offers superior light-load efficiency. |
| TPS62231DRYT | TI part in 2mm×2mm WSON; 1.5A/3MHz, 0.6V reference, but requires external boot capacitor and lacks internal PFM mode - uses DCS-Control topology instead of peak current mode. | Higher switching frequency trades off efficiency for size; no native PFM means higher light-load IQ (~12µA vs 35µA), limiting battery life in always-on apps. | Choose TPS62231DRYT only when 3MHz operation is mandatory and system-level power management compensates for higher standby current. |
Compared with ISL80019AIRZ-T7A and TPS62231DRYT, the ISL80019IRZ-T7A uniquely balances 1MHz fixed-frequency stability, ultra-low PFM quiescent current, and boot-capacitor-free integration-making it optimal for cost-sensitive, thermally constrained, battery-aware point-of-load applications.
Availability
ISL80019IRZ-T7A is available at Aetrix Electronics and suitable for FPGA power, LCD panel bias, and set-top box SoC rails requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for ISL80019IRZ-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 continues to support its high-performance analog and power management portfolio, emphasizing reliability, automotive-grade qualification, and long-term product availability.
The ISL80019IRZ-T7A belongs to Renesas' compact synchronous buck regulator family, designed specifically for space- and efficiency-critical point-of-load conversion in portable, industrial, and consumer electronics.
FAQ
What is the maximum output current specification for the ISL80019IRZ-T7A?
The ISL80019IRZ-T7A is rated for 1.5A continuous output current across the full operating temperature range (-40°C to +85°C). This rating is confirmed in Table 1 of the FN7888 datasheet and validated under thermal conditions with θJA = 71°C/W. Derating applies above +85°C ambient per the power derating curve in the datasheet.
Does the ISL80019IRZ-T7A require an external boot capacitor?
No, the ISL80019IRZ-T7A does not require an external boot capacitor because it integrates a PMOS high-side MOSFET. This architecture eliminates the need for charge-pump or bootstrap circuitry, reducing component count and layout complexity compared to NMOS-based synchronous buck regulators.
How does the MODE pin configure PFM versus PWM operation on the ISL80019IRZ-T7A?
On the ISL80019IRZ-T7A, the MODE pin selects operating mode: tie to VIN (≥2.5V) for forced PWM mode with fixed 1MHz switching; tie to GND for PFM mode, where switching frequency varies inversely with load to minimize quiescent current. An internal 1MΩ pull-down prevents undefined states if left unconnected.
What protection features are integrated into the ISL80019IRZ-T7A?
The ISL80019IRZ-T7A integrates overcurrent protection (2.5A typical trip), short-circuit protection, thermal shutdown (150°C), input undervoltage lockout (2.7V rising threshold), and output overvoltage/undervoltage detection via the FB pin-all without requiring external components. These functions are detailed in Sections 10–14 of the FN7888 datasheet.
Can the ISL80019IRZ-T7A operate at 100% duty cycle, and under what conditions?
Yes, the ISL80019IRZ-T7A supports 100% duty cycle operation at 1MHz, achieving a minimum dropout voltage of 200mV at 2A output current. This capability is enabled by its PMOS high-side switch and is valid only for the 1MHz variants (e.g., ISL80019 and ISL80019IRZ-T7A), not the 2MHz versions.
ISL80019IRZ-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:
- 1MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TDFN-EP (2x2)
ISL80019IRZ-T7A FAQ
1.How can I place an order for ISL80019IRZ-T7A through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL80019IRZ-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 ISL80019IRZ-T7A reliable?
The price and inventory of ISL80019IRZ-T7A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL80019IRZ-T7A is usually 5 days.
3.What payment methods are accepted for ISL80019IRZ-T7A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL80019IRZ-T7A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL80019IRZ-T7A?
ISL80019IRZ-T7A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL80019IRZ-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 ISL80019IRZ-T7A?
For technical support, including ISL80019IRZ-T7A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL80019IRZ-T7A requirements.
6.How does Aetrix verify that ISL80019IRZ-T7A is sourced from the original manufacturer or authorized distributors?
All ISL80019IRZ-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 ISL80019IRZ-T7A meets industry standards.
7.What is the process for return or replacement of ISL80019IRZ-T7A?
All ISL80019IRZ-T7A units undergo pre-shipment inspection (PSI). If there is an issue with ISL80019IRZ-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 ISL80019IRZ-T7A part is unused and in its original packaging.
Return procedure for ISL80019IRZ-T7A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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