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Renesas ISL80019IRZ-T
- Part No.:
- ISL80019IRZ-T
- Manufacturer:
- Renesas
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
ISL80019IRZ-T.pdf
- Description:
- IC REG BUCK ADJ 1.5A 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,996
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Product details
Overview
ISL80019IRZ-T 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, internal/external compensation options, and PFM/PWM mode selection. It integrates low-rDS(ON) PMOS/NMOS FETs, eliminates boot capacitor need, and supports 100% duty cycle operation at 1MHz for ultra-low dropout (200mV @ 2A).
For engineers reviewing the ISL80019IRZ-T datasheet, ISL80019IRZ-T pinout, ISL80019IRZ-T application, or ISL80019IRZ-T equivalent, this page provides verified technical context on peak-current-mode control, thermal shutdown, overcurrent protection, VIN undervoltage lockout, and VOUT overvoltage protection - all critical for FPGA core rail, set-top box SoC power, and LCD panel bias supply design.
Technical Context
The ISL80019IRZ-T uses peak current-mode control with slope compensation (900mV/Ts) to ensure stability across wide duty cycles and load transients. Its integrated PMOS high-side switch enables true 100% duty-cycle operation at 1MHz, supporting ultra-low dropout regulation down to 200mV at full load.
It features dual-mode operation: PFM mode reduces quiescent current to 35µA at light loads for battery longevity, while PWM mode maintains fixed 1MHz frequency (±15%) for predictable EMI and fast transient response. Protection includes cycle-by-cycle overcurrent limiting (2.5A typ), thermal shutdown at 150°C, and ±5% VFB accuracy over –40°C to +125°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VIN Range | 2.7V to 5.5V - supports single-cell Li-ion, USB 5V, and 3.3V system rails without external LDO pre-regulation. |
| IOUT Max | 1.5A continuous - sufficient for FPGA I/O banks, ARM Cortex-A cores, and LCD timing controller logic rails. |
| fSW | 1MHz (±15%) - enables use of compact 1.0–3.3µH inductors and minimizes output voltage ripple in space-constrained layouts. |
| VFB | 0.600V ±5mV - sets output via resistor divider; enables precise 0.6V–5.5V adjustable VOUT with <0.1%/V line regulation. |
| Efficiency Peak | Up to 95% - achieved at mid-load (e.g., 1.2V/1A, 3.3V/0.5A), reducing thermal stress in sealed enclosures. |
| Quiescent Current | 35µA (PFM, no load) - extends battery runtime in always-on subsystems like remote control receivers or sensor hubs. |
| Thermal Shutdown | 150°C with 25°C hysteresis - protects against sustained overload or poor PCB heatsinking in industrial ambient conditions. |
Pinout & Package
ISL80019IRZ-T is housed in an 8-pin 2mm × 2mm TDFN package with exposed thermal pad (Pin 9), optimized for high-power density and thermal performance in portable and embedded applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 1) | Input power supply | Accepts 2.7–5.5V; requires ≥10µF ceramic decoupling close to pin to suppress high-frequency switching noise. |
| EN (Pin 2) | Enable control | Active-high logic (1.4V threshold); pulls PHASE low via 100Ω when disabled to discharge output safely. |
| MODE (Pin 3) | Operation mode select | Logic high = PWM (fixed fSW); logic low = PFM (variable frequency, ultra-low IQ); internal 1MΩ pull-down prevents floating. |
| PG (Pin 4) | Power-good indicator | Open-drain output; pulled low during soft-start and if VOUT drops below 90% or rises above 120% of setpoint. |
| COMP (Pin 5) | Error amplifier output | Tied to VIN for internal compensation (27pF/200kΩ); connected to RC network for external loop tuning. |
| FB (Pin 6) | Feedback input | Senses output voltage divider; also used by PG and UVLO circuits - requires low-noise routing away from noisy nodes. |
| PGND (Pin 7) | Power/analog ground | Must connect directly to solid ground plane; separates power return from sensitive analog reference paths. |
| PHASE (Pin 8) | Switching node | Connects to inductor; carries high di/dt current - requires short, wide trace and tight layout to minimize EMI. |
Key Features
| Feature | Design Value |
|---|---|
| PMOS high-side switch | Eliminates boot capacitor requirement, reducing BOM count and board area vs. NMOS-based buck controllers. |
| 100% duty cycle capability | Enables dropout as low as 200mV at 2A, supporting near-input-output regulation for low-VOUT rails (e.g., 0.8V DDR memory). |
| Selectible PFM/PWM modes | PFM delivers 35µA IQ at light loads; PWM ensures consistent EMI profile and <1ms transient recovery under dynamic load steps. |
| Integrated protection suite | Includes overcurrent (2.5A typ), short-circuit, thermal shutdown (150°C), VIN UVLO (2.7V), and VOUT OVP/UVP (±10%). |
| Internal/external compensation | Default internal RC (27pF/200kΩ) simplifies design; external option allows optimization for custom inductor/capacitor combinations. |
Applications
| FPGA Core Power | Set-Top Box SoC Supply |
|---|---|
|
Use Scenario: Powers 1.2V core rail of Xilinx Spartan-7 or Intel Cyclone V FPGA during configuration and active logic operation. IC Role / Device Role / Timing Role: Primary synchronous buck regulator delivering tightly regulated, low-noise 1.2V/1.5A with fast load-step response. Use Value: Achieves <±1% VOUT accuracy across temperature and load, meeting FPGA core voltage tolerance specs while minimizing thermal derating. |
Use Scenario: Supplies 1.8V I/O rail for Broadcom BCM72xx or STMicro STi710x SoCs in cable modems and IPTV gateways. IC Role / Device Role / Timing Role: High-efficiency point-of-load converter operating from 3.3V intermediate bus with PFM mode for standby power savings. Use Value: Delivers 94% efficiency at 1.8V/1A and 35µA quiescent current in PFM, extending device uptime during deep-sleep states. |
| LCD Panel Bias Supply | Industrial Sensor Hub Rail |
|
Use Scenario: Generates 3.3V bias for timing controller and gate driver ICs in 7–10 inch automotive-grade LCD displays. IC Role / Device Role / Timing Role: Compact, thermally robust buck regulator mounted near display connector to minimize IR drop and noise coupling. Use Value: 2mm×2mm TDFN package with exposed pad enables direct thermal vias to inner ground layer, sustaining 1.5A at +85°C ambient. |
Use Scenario: Provides 0.9V logic rail for ultra-low-power microcontrollers (e.g., STM32L4+) and MEMS sensor interfaces in battery-operated condition monitoring nodes. IC Role / Device Role / Timing Role: Always-on power stage with 100% duty cycle support enabling stable 0.9V output even as battery discharges to 2.7V. Use Value: Maintains regulation down to 2.7V input with <0.2%/A load regulation, ensuring deterministic MCU operation across full battery range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62130ARGTR | 2A max output, 2.5–6V input, 3.5MHz switching, integrated soft-start; no PFM mode, higher IQ (17µA) | Better suited for high-frequency, low-inductance designs where size > efficiency; lacks PFM for ultra-low IQ battery apps | Choose for compact 1µH inductor designs requiring >3MHz fSW; avoid when <50µA IQ is mandatory. |
| RT7297CGJ6F | 2A max, 2.5–5.5V input, 1MHz fSW, 30µA IQ (PFM), but requires external bootstrap capacitor and has no 100% duty cycle | Compatible for general 1.5A PoL use but cannot support sub-300mV dropout; less suitable for battery-end-of-life scenarios | Choose for cost-sensitive designs needing 1MHz operation and moderate IQ; avoid when 100% duty cycle or boot-cap-free layout is required. |
Compared with TPS62130ARGTR and RT7297CGJ6F, the ISL80019IRZ-T uniquely combines 1.5A/1MHz operation, boot-cap-free PMOS architecture, 100% duty cycle, and 35µA PFM quiescent current - making it optimal for space-constrained, battery-aware, low-dropout applications where reliability and thermal performance are prioritized over maximum switching frequency.
Availability
ISL80019IRZ-T is available at Aetrix Electronics and suitable for FPGA core power, set-top box SoC supply, and LCD panel bias applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for ISL80019IRZ-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 (formerly Intersil) is a global semiconductor leader specializing in microcontrollers, analog power management, and timing solutions for industrial, automotive, and communications markets.
The ISL80019IRZ-T belongs to Renesas' ISL800xx family of compact synchronous buck regulators, designed specifically for high-efficiency, low-noise, space-constrained point-of-load conversion in portable and embedded systems.
FAQ
What is the maximum output current and switching frequency of the ISL80019IRZ-T?
The ISL80019IRZ-T delivers up to 1.5A continuous output current and operates at a fixed 1MHz switching frequency (±15%), as confirmed in Table 1 and Electrical Specifications of FN7888 Rev 4.00. This frequency enables use of small 1.0–3.3µH inductors while maintaining high efficiency and fast transient response - key for FPGA and SoC power rails. The ISL80019IRZ-T does not support 2MHz operation; that variant is the ISL80019AIRZ-T.
Does the ISL80019IRZ-T require an external boot capacitor?
No, the ISL80019IRZ-T does not require an external boot capacitor because it integrates a PMOS high-side MOSFET, eliminating the need for charge-pump circuitry. This is explicitly stated in the datasheet introduction and Pin Descriptions section. The absence of a boot capacitor reduces component count, board area, and potential failure points - a key differentiator versus NMOS-based buck regulators. The ISL80019IRZ-T achieves this while maintaining 100% duty cycle capability at 1MHz.
What protection features are built into the ISL80019IRZ-T?
The ISL80019IRZ-T includes overcurrent protection (2.5A typical peak limit), short-circuit protection, thermal shutdown at 150°C (with 25°C hysteresis), VIN undervoltage lockout (2.7V rising threshold), and VOUT overvoltage/undervoltage protection (115% and 85% of VFB, respectively). These are documented in the Absolute Maximum Ratings, Electrical Specifications, and Theory of Operation sections of FN7888. All protections operate autonomously without external components, ensuring robust operation in industrial and consumer environments where ISL80019IRZ-T is deployed.
Can the ISL80019IRZ-T operate in both PFM and PWM modes, and how is mode selected?
Yes, the ISL80019IRZ-T supports both PFM (discontinuous conduction) and PWM (continuous conduction) modes. Mode is selected via the MODE pin (Pin 3): connect to VIN or logic high for PWM; connect to GND or logic low for PFM. An internal 1MΩ pull-down prevents undefined states if left floating, though datasheet recommends explicit connection. PFM reduces quiescent current to 35µA at light loads, while PWM maintains fixed 1MHz frequency for EMI control - both modes are fully supported and characterized for ISL80019IRZ-T per FN7888.
What is the feedback reference voltage and accuracy of the ISL80019IRZ-T?
The ISL80019IRZ-T has a nominal feedback reference voltage (VFB) of 0.600V with ±5mV (±0.83%) initial accuracy at +25°C, and ±11mV (±1.83%) over the full –40°C to +125°C junction temperature range, as specified in the Electrical Specifications table on page 7 of FN7888. This tight tolerance enables accurate output voltage setting across temperature and ensures compliance with strict core rail requirements for FPGAs and microcontrollers powered by ISL80019IRZ-T.
ISL80019IRZ-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-WFDFN 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):
- 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-T FAQ
1.How can I place an order for ISL80019IRZ-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL80019IRZ-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 ISL80019IRZ-T reliable?
The price and inventory of ISL80019IRZ-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL80019IRZ-T is usually 5 days.
3.What payment methods are accepted for ISL80019IRZ-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL80019IRZ-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL80019IRZ-T?
ISL80019IRZ-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL80019IRZ-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 ISL80019IRZ-T?
For technical support, including ISL80019IRZ-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL80019IRZ-T requirements.
6.How does Aetrix verify that ISL80019IRZ-T is sourced from the original manufacturer or authorized distributors?
All ISL80019IRZ-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 ISL80019IRZ-T meets industry standards.
7.What is the process for return or replacement of ISL80019IRZ-T?
All ISL80019IRZ-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL80019IRZ-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 ISL80019IRZ-T part is unused and in its original packaging.
Return procedure for ISL80019IRZ-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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