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Renesas ISL80019FRZ-T
- Part No.:
- ISL80019FRZ-T
- Manufacturer:
- Renesas
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
ISL80019FRZ-T.pdf
- Description:
- IC REG BUCK ADJ 1.5A 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,222
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Product details
Overview
ISL80019FRZ-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, operating at 1MHz switching frequency with internal compensation and 0.6V feedback reference. It integrates low-rDS(ON) PMOS/NMOS power FETs, eliminates boot capacitor requirement, and supports 100% duty cycle operation for ultra-low dropout (200mV at 2A). It is used in FPGA core voltage regulation and LCD panel power supplies.
For engineers reviewing the ISL80019FRZ-T datasheet, ISL80019FRZ-T pinout, ISL80019FRZ-T application, or ISL80019FRZ-T equivalent, key selection criteria include its extended temperature range (−40°C to +125°C), PFM/PWM mode selectability, integrated thermal shutdown, and compact 2mm×2mm TDFN package with exposed thermal pad.
Technical Context
The ISL80019FRZ-T uses peak current-mode control with slope compensation (900mV/Ts) to ensure stability across wide load and input conditions. Its architecture enables very low duty-cycle operation and fast transient response due to fixed 1MHz oscillator and integrated error amplifier (40µA/V transconductance).
It implements dual-mode light-load operation: PFM reduces switching losses for high efficiency at light loads (35µA quiescent current), while PWM maintains fixed frequency for EMI control. Protection includes overcurrent (2.5A typical peak limit), short-circuit, thermal shutdown (150°C), UVLO (2.7V rising threshold), and VOUT overvoltage/undervoltage monitoring via FB pin.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 1.5A continuous - supports mid-power FPGA I/O or LCD bias rails without external current boosting. |
| Input Voltage Range | 2.7V to 5.5V - compatible with single-cell Li-ion, USB 5V, or 3.3V system rails. |
| Switching Frequency | 1MHz - enables use of small 1.0–3.3µH inductors and reduces output ripple vs lower-frequency alternatives. |
| Feedback Reference | 0.600V ±5mV - allows precise output setting down to 0.6V with standard resistor dividers. |
| Quiescent Current | 35µA (PFM, no load) - extends battery life in always-on subsystems like display controllers. |
| Thermal Shutdown | 150°C with 25°C hysteresis - prevents latch-up during sustained overload or poor PCB thermal design. |
| Duty Cycle Range | 0–100% - supports ultra-low dropout operation (e.g., 3.3V→3.1V at 2A with only 200mV drop). |
Pinout & Package
ISL80019FRZ-T is housed in an 8-pin 2mm×2mm TDFN package with exposed thermal pad (Pin 9), optimized for high thermal conductivity and minimal PCB area (<0.10 in² total solution size).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 1) | Input power supply rail | Supplies both power stage and internal LDO; requires ≥10µF ceramic decoupling close 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) | Operating mode selector | Tied to VIN for PWM, GND for PFM; internal 1MΩ pull-down prevents floating state. |
| PG (Pin 4) | Power-good open-drain output | Asserts low during soft-start or if VOUT falls outside 85–115% regulation window. |
| COMP (Pin 5) | Error amplifier output | Tied to VIN for internal compensation; connects to RC network for external loop tuning. |
| FB (Pin 6) | Feedback input | Senses output voltage divider; also used by PG and UVLO circuits for regulation monitoring. |
| PGND (Pin 7) | Power and analog ground | Must connect directly to PCB ground plane; shared return for high-current switching paths. |
| PHASE (Pin 8) | Switching node | Connects to inductor; discharged via 100Ω resistor during disable to prevent output ringing. |
Key Features
| Feature | Design Value |
|---|---|
| PMOS high-side switch | Eliminates need for external boot capacitor, reducing BOM count and layout complexity. |
| Selectably PFM/PWM operation | Enables dynamic trade-off between light-load efficiency (PFM) and EMI predictability (PWM). |
| Internal/external compensation | Default internal RC (27pF/200kΩ) simplifies design; external option allows optimization for custom output filters. |
| 100% duty cycle capability | Supports near-dropout regulation (e.g., 3.3V→3.1V) without losing control-critical for brownout resilience. |
| Integrated protection suite | Includes OCP, SCP, thermal shutdown, UVLO, and VOUT OVP/UVP-reduces need for external supervision ICs. |
Applications
| FPGA Core Power | LCD Panel Bias Supply |
|---|---|
|
Use Scenario: Providing stable 1.2V/1.5A core voltage to Xilinx Spartan-7 or Intel MAX 10 FPGA under dynamic logic loading. IC Role / Device Role / Timing Role: Primary point-of-load regulator with fast transient response to handle logic switching current spikes. Use Value: 1MHz switching and peak current-mode control limit output voltage deviation to <±15mV during 0→1.5A load steps. |
Use Scenario: Generating 3.3V/1.2A bias for TFT-LCD source driver ICs in industrial HMIs. IC Role / Device Role / Timing Role: Compact, thermally robust DC/DC converter mounted adjacent to display module. Use Value: −40°C to +125°C rating ensures reliable startup and regulation in unventilated enclosures. |
| Set-Top Box SoC Rail | USB-Powered Peripheral |
|
Use Scenario: Delivering 1.8V/1.5A to ARM-based media processor (e.g., Broadcom BCM7218) in cable modem gateways. IC Role / Device Role / Timing Role: Secondary regulated rail derived from 5V USB or wall adapter input. Use Value: PFM mode achieves >85% efficiency at 10mA standby load, extending sleep-mode battery runtime. |
Use Scenario: Regulating 0.9V–2.5V output from 5V USB-C port for portable test equipment or sensor nodes. IC Role / Device Role / Timing Role: Flexible, footprint-efficient buck converter supporting multiple output voltages via FB divider. Use Value: 0.6V reference and wide VOUT range (0.6V to VIN) enable direct generation of sub-1V digital rails. |
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 output, 3–17V input, 2.5MHz switching, integrated soft-start, but requires boot capacitor. | Better suited for higher-input-voltage systems (e.g., 12V intermediate bus); less optimal for 3.3V-in applications. | Choose when input exceeds 5.5V or higher output current is needed; verify boot cap layout and thermal derating. |
| MP2143GJ-Z | 2A output, 2.5–5.5V input, 1.5MHz switching, 0.6V reference, but rated only to +85°C ambient. | Limited to commercial-temperature environments; lacks extended-temp qualification for industrial deployments. | Select for cost-sensitive consumer designs where full −40°C to +125°C operation is not required. |
Compared with TPS62130ARGTR and MP2143GJ-Z, the ISL80019FRZ-T uniquely combines 1.5A/1MHz operation, extended temperature rating, boot-capacitor-free PMOS architecture, and 100% duty cycle support-making it optimal for space-constrained industrial and automotive-adjacent power rails.
Availability
ISL80019FRZ-T is available at Aetrix Electronics and suitable for FPGA power, LCD panel bias, and set-top box SoC rails requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ISL80019FRZ-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 acquired Intersil in 2017 and continues to support its high-performance analog and power management portfolio with full datasheet, simulation model, and application note continuity.
The ISL80019FRZ-T belongs to the ISL800xx family of compact synchronous buck regulators designed for space- and efficiency-critical point-of-load applications in industrial, computing, and consumer electronics.
FAQ
What is the maximum junction temperature and thermal shutdown behavior of the ISL80019FRZ-T?
The ISL80019FRZ-T has a thermal shutdown threshold of +150°C with 25°C hysteresis. When junction temperature reaches this limit, the device disables switching and holds PHASE low until temperature falls to +125°C, then resumes normal operation. This protects against permanent damage during sustained overload or inadequate heatsinking. The 2mm×2mm TDFN package has θJA = 71°C/W and θJC = 7°C/W, enabling effective thermal transfer to the PCB ground plane via the exposed pad.
Can the ISL80019FRZ-T operate with 100% duty cycle, and under what conditions?
Yes, the ISL80019FRZ-T supports 100% duty cycle operation at its 1MHz switching frequency, enabling ultra-low dropout regulation-for example, maintaining 3.1V output from a 3.3V input at 2A with only 200mV dropout. This capability requires VIN ≥ VOUT, operation in PWM mode, and proper external component selection (inductor DCR, output capacitance ESR). It does not apply in PFM mode or at 2MHz variants.
How does the MODE pin affect efficiency and noise performance in the ISL80019FRZ-T?
The MODE pin selects between PFM (pin grounded) and PWM (pin tied to VIN). In PFM mode, the ISL80019FRZ-T reduces switching frequency at light loads, cutting quiescent current to 35µA and maximizing battery life-but introduces variable-frequency noise. In PWM mode, fixed 1MHz operation ensures predictable EMI filtering and lower output voltage ripple, though quiescent current rises to 7–22mA depending on frequency and load. Both modes are supported without hardware change.
What are the key differences between the ISL80019FRZ-T and the ISL80019IRZ-T?
The ISL80019FRZ-T and ISL80019IRZ-T share identical electrical specifications and pinout, but differ in temperature rating: ISL80019FRZ-T is qualified for −40°C to +125°C junction operation, while ISL80019IRZ-T is rated only to +85°C. The 'F' suffix denotes the extended-temperature grade, making ISL80019FRZ-T suitable for under-hood automotive modules, industrial motor drives, and outdoor telecom equipment where ambient extremes exceed commercial limits.
Does the ISL80019FRZ-T require external compensation, and how is it configured?
No, the ISL80019FRZ-T defaults to internal compensation when the COMP pin is tied directly to VIN-using an integrated 27pF capacitor and 200kΩ resistor. External compensation is optional: connecting a series RC network from COMP to GND allows loop tuning for custom output filter configurations (e.g., low-ESR polymer caps or high-value ceramic arrays). The error amplifier's transconductance is 40µA/V in internal mode and 120µA/V in external mode, affecting phase margin and transient response.
ISL80019FRZ-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)
ISL80019FRZ-T FAQ
1.How can I place an order for ISL80019FRZ-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL80019FRZ-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 ISL80019FRZ-T reliable?
The price and inventory of ISL80019FRZ-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL80019FRZ-T is usually 5 days.
3.What payment methods are accepted for ISL80019FRZ-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL80019FRZ-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL80019FRZ-T?
ISL80019FRZ-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL80019FRZ-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 ISL80019FRZ-T?
For technical support, including ISL80019FRZ-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL80019FRZ-T requirements.
6.How does Aetrix verify that ISL80019FRZ-T is sourced from the original manufacturer or authorized distributors?
All ISL80019FRZ-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 ISL80019FRZ-T meets industry standards.
7.What is the process for return or replacement of ISL80019FRZ-T?
All ISL80019FRZ-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL80019FRZ-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 ISL80019FRZ-T part is unused and in its original packaging.
Return procedure for ISL80019FRZ-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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