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Renesas ISL8002IRZ-T7A
- Part No.:
- ISL8002IRZ-T7A
- Manufacturer:
- Renesas
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
ISL8002IRZ-T7A.pdf
- Description:
- IC REG BUCK ADJ 2A 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,235
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Product details
Overview
ISL8002IRZ-T7A from Renesas (formerly Intersil) is a monolithic synchronous buck regulator delivering up to 2A 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 switches, eliminates boot capacitor requirement, and supports 100% duty cycle operation for ultra-low dropout (200mV @ 2A). It powers FPGA core rails, LCD panel supplies, and set-top box point-of-load converters.
For engineers reviewing the ISL8002IRZ-T7A datasheet, ISL8002IRZ-T7A pinout, ISL8002IRZ-T7A application, or ISL8002IRZ-T7A equivalent, key selection criteria include its 1MHz fixed-frequency PWM/optional PFM light-load mode, thermal shutdown at 150°C, ±1% VFB accuracy over temperature, and compact 2mm×2mm TDFN package with exposed thermal pad.
Technical Context
The ISL8002IRZ-T7A uses peak current-mode control with slope compensation (900mV/Ts) for stability across wide duty cycles, enabling robust transient response and compatibility with small inductors (1.0–3.3µH). Its integrated PMOS high-side switch removes boot capacitor dependency, simplifying layout and reducing BOM count.
It features dual-mode operation: forced PWM for EMI-sensitive environments and automatic PFM for <35µA quiescent current at light loads. Protection includes overcurrent (3–4A peak limit), short-circuit, thermal shutdown with 25°C hysteresis, UVLO (2.7V rising), and VOUT overvoltage/undervoltage monitoring via FB pin.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 2A continuous - supports FPGA core, DDR memory, and LCD bias rails without external current boosting. |
| Switching Frequency | 1MHz - enables use of sub-3.3µH inductors and reduces EMI filtering complexity vs. lower-frequency alternatives. |
| Feedback Voltage | 0.600V ±5mV - sets precise output voltage with external resistor divider; stable over -40°C to +125°C junction temp. |
| Input Voltage Range | 2.7V to 5.5V - compatible with single-cell Li-ion, USB 5V, and 3.3V system rails. |
| Efficiency Peak | 95% - achieved at mid-load (1–1.5A) with 3.3VIN/1.8VOUT, minimizing thermal dissipation in space-constrained designs. |
| Duty Cycle Range | 0–100% - allows dropout as low as 200mV at 2A, critical for low-VOUT applications like 0.8V CPU cores. |
| Quiescent Current | 35µA (PFM mode) - extends battery life in always-on subsystems such as remote control receivers or sensor hubs. |
Pinout & Package
ISL8002IRZ-T7A is housed in an 8-pin 2mm×2mm TDFN package with exposed thermal pad (Pin 9), optimized for high-power density and thermal performance on compact PCBs.
| 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 for stability. |
| EN (Pin 2) | Enable control input | Active-high logic (≥1.4V); pulls PHASE to GND via 100Ω when disabled for controlled output discharge. |
| MODE (Pin 3) | Operation mode select | Tied to VIN for forced PWM; grounded 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 deviates >±15% from regulation; includes 5MΩ internal pull-up. |
| COMP (Pin 5) | Error amplifier output | Tied to VIN for internal compensation (27pF/200kΩ network); external RC for custom loop tuning. |
| FB (Pin 6) | Feedback input | Monitors output via resistor divider; also used by PG and UVLO circuits-requires low-noise routing. |
| PGND (Pin 7) | Power/analog ground | Must connect directly to PCB ground plane; shared return for high-current switching paths. |
| PHASE (Pin 8) | Switching node | Connects to inductor; carries high di/dt current; 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 by ~20% vs. NMOS-based buck controllers. |
| Selectability between PWM and PFM | Enables EMI-sensitive systems to lock into fixed-frequency PWM while preserving battery runtime via PFM at light loads. |
| Internal/external compensation | Default internal RC (27pF/200kΩ) simplifies design; external option allows optimization for specific output capacitor ESR/ESL. |
| 100% duty-cycle capability | Supports ultra-low dropout operation (200mV @ 2A), essential for powering sub-1V digital cores from 2.7V–3.3V inputs. |
| Integrated protection suite | Includes OCP (3.5A typ), SCP, thermal shutdown (150°C), UVLO (2.7V), and VOUT OVP/UVP-reduces need for external supervision ICs. |
Applications
| Application 1 | Application 2 |
|---|---|
Use Scenario: Powering FPGA I/O banks and transceiver rails in compact set-top boxes. IC Role / Device Role / Timing Role: Primary point-of-load regulator converting 3.3V system rail to 1.2V/1.5V/1.8V I/O supplies. Use Value: 1MHz operation enables small 1.2µH inductors and tight layout; PFM mode extends standby battery life in always-on media devices. |
Use Scenario: Supplying LCD panel logic and gate driver ICs in portable DVD players. IC Role / Device Role / Timing Role: Synchronous buck converter generating 0.9V–3.3V bias voltages from single-cell Li-ion (2.7–4.2V). Use Value: 100% duty cycle ensures stable output even as battery discharges below 3V; 95% efficiency minimizes heat in sealed enclosures. |
| Application 3 | Application 4 |
Use Scenario: Regulating DDR3/DDR4 memory termination voltage (VTT) and reference voltage (VREF) in embedded systems. IC Role / Device Role / Timing Role: Precision 0.6V feedback reference enables accurate VREF generation; fast transient response handles memory burst currents. Use Value: ±5mV VFB tolerance and 1MHz bandwidth ensure <±1% output regulation under dynamic load steps up to 2A/µs. |
Use Scenario: Providing core voltage to low-power microcontrollers in industrial sensor nodes. IC Role / Device Role / Timing Role: Main DC/DC converter stepping down 5V USB or 3.3V system rail to 0.8V–1.2V MCU core supply. Use Value: 35µA quiescent current in PFM mode extends multi-year battery life; thermal pad ensures reliable operation at 85°C ambient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL8002AIRZ-T7A | 2MHz switching frequency, identical 2A rating and package; higher FSW enables smaller inductors but increases switching loss at full load. | Better suited for ultra-compact designs where inductor size dominates board area, less optimal for thermally constrained 2A continuous loads. | Select ISL8002AIRZ-T7A only when board space is more critical than thermal margin or light-load efficiency. |
| TPS62231DRVR | TI part with 2A rating, 3MHz FSW, 0.6V VFB, but requires external boot capacitor and lacks 100% duty cycle support. | Compatible for 1.2V+ outputs where dropout is not limiting; unsuitable for sub-1V core rails fed from ≤3.3V inputs. | Choose TPS62231DRVR when leveraging TI's WEBENCH tools or existing TI design ecosystems-but verify boot circuit layout and dropout margin. |
Compared with ISL8002AIRZ-T7A and TPS62231DRVR, the ISL8002IRZ-T7A uniquely combines 1MHz operation for balanced efficiency/size trade-offs, PMOS-based bootless architecture, and guaranteed 100% duty cycle-making it optimal for cost-sensitive, thermally constrained 2A PoL applications requiring minimal external components.
Availability
ISL8002IRZ-T7A is available at Aetrix Electronics and suitable for FPGA power, LCD panel supplies, and set-top box point-of-load conversion requiring stable component supply, RoHS-compliant packaging, and long-term industrial lifecycle support.
Supply support for ISL8002IRZ-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, automotive-grade qualification, and long-term product availability.
The ISL8002IRZ-T7A belongs to Renesas' compact synchronous buck regulator family designed for space-constrained, battery-powered, and industrial embedded applications demanding high efficiency, low quiescent current, and simplified layout.
FAQ
What is the maximum continuous output current of the ISL8002IRZ-T7A?
The ISL8002IRZ-T7A delivers up to 2A of continuous output current across its full operating temperature range (-40°C to +85°C ambient), verified per datasheet Table 1 and Absolute Maximum Ratings. This rating assumes proper PCB thermal design with ≥4 thermal vias under the exposed pad and adequate copper area for heat dissipation.
Does the ISL8002IRZ-T7A require an external boot capacitor?
No, the ISL8002IRZ-T7A does not require an external boot capacitor because it integrates a PMOS high-side switch. This architecture eliminates the need for charge-pump circuitry or external capacitors typically required by NMOS-based synchronous buck regulators, reducing BOM count and layout complexity.
Can the ISL8002IRZ-T7A operate with 100% duty cycle, and under what conditions?
Yes, the ISL8002IRZ-T7A supports 100% duty cycle operation specifically in its 1MHz version (including ISL8002IRZ-T7A), enabling dropout as low as 200mV at 2A output current. This feature is critical for maintaining regulation when input voltage approaches output voltage, such as powering 0.8V cores from a 2.7V–3.3V source.
How does the MODE pin affect light-load efficiency in the ISL8002IRZ-T7A?
When the MODE pin is grounded, the ISL8002IRZ-T7A enters PFM (pulse-frequency modulation) mode, reducing switching frequency and quiescent current to 35µA typical-significantly improving light-load efficiency. When tied to VIN, it forces fixed-frequency PWM mode for consistent EMI profile and faster transient response, at the cost of higher light-load current (~7mA).
What protection features are integrated into the ISL8002IRZ-T7A?
The ISL8002IRZ-T7A integrates overcurrent protection (3.5A typical peak limit), short-circuit protection, thermal shutdown (150°C with 25°C hysteresis), input undervoltage lockout (2.7V rising threshold), and output overvoltage/undervoltage detection via the FB pin-eliminating the need for discrete protection circuitry in most applications.
ISL8002IRZ-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:
- 2A
- 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)
ISL8002IRZ-T7A FAQ
1.How can I place an order for ISL8002IRZ-T7A through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL8002IRZ-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 ISL8002IRZ-T7A reliable?
The price and inventory of ISL8002IRZ-T7A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL8002IRZ-T7A is usually 5 days.
3.What payment methods are accepted for ISL8002IRZ-T7A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL8002IRZ-T7A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL8002IRZ-T7A?
ISL8002IRZ-T7A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL8002IRZ-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 ISL8002IRZ-T7A?
For technical support, including ISL8002IRZ-T7A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL8002IRZ-T7A requirements.
6.How does Aetrix verify that ISL8002IRZ-T7A is sourced from the original manufacturer or authorized distributors?
All ISL8002IRZ-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 ISL8002IRZ-T7A meets industry standards.
7.What is the process for return or replacement of ISL8002IRZ-T7A?
All ISL8002IRZ-T7A units undergo pre-shipment inspection (PSI). If there is an issue with ISL8002IRZ-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 ISL8002IRZ-T7A part is unused and in its original packaging.
Return procedure for ISL8002IRZ-T7A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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