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Renesas ISL8002FRZ-T
- Part No.:
- ISL8002FRZ-T
- Manufacturer:
- Renesas
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
ISL8002FRZ-T.pdf
- Description:
- IC REG BUCK ADJ 2A 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,030
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Product details
Overview
ISL8002FRZ-T 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, 0.6V feedback reference, and 100% duty-cycle capability at 1MHz for ultra-low dropout (200mV @ 2A). It serves as a compact, high-efficiency point-of-load DC/DC converter in FPGA power rails and LCD panel supplies.
For engineers reviewing the ISL8002FRZ-T datasheet, ISL8002FRZ-T pinout, ISL8002FRZ-T application, or ISL8002FRZ-T equivalent, key selection criteria include its extended temperature range (−40°C to +125°C), PMOS high-side architecture eliminating boot capacitor requirements, selectable PFM/PWM light-load operation, and integrated overcurrent, thermal, UVLO, and OVP protections.
Technical Context
The ISL8002FRZ-T uses peak current-mode control with slope compensation (900mV/Ts) to ensure stability across wide duty cycles and load transients. Its integrated PMOS/NMOS power stage features 117mΩ high-side and 86mΩ low-side rDS(ON) at VIN = 5V, enabling up to 95% peak efficiency and 100% duty-cycle operation at 1MHz.
It supports both internal compensation (via COMP tied to VIN with embedded 27pF/200kΩ network) and external compensation (via RC network to GND), and implements zero-cross sensing, negative current limiting (−1.5A), and fast transient response due to 1MHz fixed-frequency PWM or variable-frequency PFM mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VIN Range | 2.7V to 5.5V - supports single-cell Li-ion, USB, and 3.3V/5V system rails without pre-regulation. |
| IOUT Max | 2A continuous - sufficient for FPGA core logic, DDR memory termination, and LCD bias supplies. |
| Switching Frequency | 1MHz - enables use of small 1.0–3.3µH inductors and reduces EMI filtering burden vs lower frequencies. |
| Feedback Voltage | 0.600V ±5mV - sets precise output voltage via external resistor divider; stable over −40°C to +125°C. |
| Quiescent Current | 35µA (PFM, no load) - extends battery life in always-on subsystems like set-top box standby circuits. |
| Duty Cycle Max | 100% at 1MHz - allows ultra-low dropout operation (200mV @ 2A), critical for high-current, low-VOUT applications. |
| Thermal Range | −40°C to +125°C junction - qualified for automotive under-hood and industrial motor drive auxiliary rails. |
Pinout & Package
ISL8002FRZ-T is housed in an 8-pin 2mm × 2mm TDFN package with exposed thermal pad (Pin 9), optimized for high-power density and thermal dissipation (θJC = 7°C/W).
| 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 enable (threshold 1.4V); pulls PHASE low via 100Ω when disabled for controlled discharge. |
| MODE (Pin 3) | Light-load operation mode select | Logic high = forced PWM; logic low = 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 below 85% or rises above 115% of regulation. |
| COMP (Pin 5) | Error amplifier output / compensation node | Tied to VIN for internal compensation; connected to RC-to-GND for external loop tuning. |
| FB (Pin 6) | Feedback input | Senses output voltage via resistor divider; used by PG, UVLO, and OVP circuits for 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 through 100Ω when disabled; requires low-inductance layout. |
Key Features
| Feature | Design Value |
|---|---|
| PMOS high-side switch | Eliminates boot capacitor requirement, reducing BOM count and board area in space-constrained designs. |
| Select PFM or PWM mode | PFM delivers 35µA quiescent current at light loads; PWM ensures fixed-frequency EMI profile and noise immunity. |
| Integrated protection suite | Includes overcurrent (3.5A peak limit), thermal shutdown (150°C), UVLO (2.7V rising), and OVP/UVP on FB. |
| 100% duty cycle support | Enables dropout as low as 200mV at 2A output, critical for high-current, low-VOUT applications like 1.2V FPGA cores. |
| Internal/external compensation | Default internal loop (27pF/200kΩ) simplifies design; external option allows optimization for custom inductor/capacitor combinations. |
Applications
| FPGA Core Power | LCD Panel Bias Supply |
|---|---|
|
Use Scenario: Providing tightly regulated 1.2V at up to 2A to Xilinx Artix-7 FPGA core logic under dynamic load conditions. IC Role / Device Role / Timing Role: Primary synchronous buck regulator managing transient-heavy digital load with <1ms soft-start and fast load-step recovery. Use Value: 95% peak efficiency and 100% duty cycle minimize heat rise and enable direct 3.3V-to-1.2V conversion without intermediate stages. |
Use Scenario: Generating stable 1.8V/2A bias for TFT-LCD source driver ICs in industrial display modules operating at +105°C ambient. IC Role / Device Role / Timing Role: High-reliability point-of-load regulator with extended temperature qualification (−40°C to +125°C) and thermal shutdown. Use Value: PMOS architecture avoids boot circuit failure modes; PFM mode extends display controller battery runtime in portable medical monitors. |
| Set-Top Box SoC Rail | HDD Preamp Power |
|
Use Scenario: Delivering 0.9V/2A to ARM-based SoC in cable modem gateways requiring low-noise, low-quiescent operation in standby mode. IC Role / Device Role / Timing Role: Dual-mode (PFM/PWM) regulator enabling <35µA IQ in PFM for always-on wake-on-LAN functionality. Use Value: Internal compensation and 1MHz switching allow full regulation with only two 22µF output capacitors and one 1.2µH inductor. |
Use Scenario: Supplying clean 2.5V/1.5A to HDD read/write preamplifier circuits where EMI-sensitive analog performance is critical. IC Role / Device Role / Timing Role: Low-noise synchronous buck with PWM-only mode selection and tight VFB accuracy (±5mV) for analog rail stability. Use Value: 86mΩ NMOS rDS(ON) and 1MHz fixed frequency reduce output ripple and simplify EMI filter design versus 500kHz alternatives. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL8002IRZ-T | Same 2A/1MHz spec but rated for −40°C to +85°C junction temperature. | Not qualified for under-hood automotive or high-ambient industrial environments. | Select ISL8002FRZ-T when operation above +85°C ambient is required; ISL8002IRZ-T suffices for commercial-grade consumer electronics. |
| TPS62231DRYR | 2A, 1MHz, 2.05–6.5V input, 0.6V VFB, but uses NMOS high-side requiring boot capacitor and lacks 100% duty cycle. | Higher BOM count and larger solution size; no ultra-low-dropout capability. | Choose ISL8002FRZ-T for minimal footprint, bootless design, and sub-200mV dropout; TPS62231DRYR offers wider VIN range and TI support ecosystem. |
Compared with ISL8002IRZ-T, ISL8002FRZ-T adds 40°C higher max junction temperature for harsh environments; compared with TPS62231DRYR, it eliminates boot components and enables true 100% duty cycle-reducing solution size and improving low-VOUT headroom.
Availability
ISL8002FRZ-T is available at Aetrix Electronics and suitable for FPGA core power, LCD panel bias supplies, and set-top box SoC rails requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ISL8002FRZ-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 maintains its high-performance analog and power management portfolio, emphasizing reliability, thermal robustness, and integration for industrial and automotive applications.
The ISL8002FRZ-T belongs to Renesas' compact synchronous buck regulator family designed for space-constrained, thermally demanding point-of-load applications including FPGA, ASIC, and display power delivery.
FAQ
What is the maximum junction temperature rating for the ISL8002FRZ-T?
The ISL8002FRZ-T is rated for a junction temperature range of −40°C to +125°C, making it suitable for under-hood automotive auxiliary rails and industrial motor drive control boards where ambient temperatures exceed +85°C. This extended rating distinguishes it from the standard ISL8002IRZ-T (−40°C to +85°C) and is confirmed in the Absolute Maximum Ratings table on page 7 of FN7888 Rev 4.00.
Does the ISL8002FRZ-T require an external boot capacitor?
No, the ISL8002FRZ-T 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 PCB area. The datasheet explicitly states this advantage on page 1 and confirms it in the Functional Block Diagram (Figure 3) and Pin Descriptions (page 4).
How does the MODE pin affect light-load efficiency in the ISL8002FRZ-T?
When the MODE pin is pulled low (PFM mode), the ISL8002FRZ-T reduces switching frequency under light loads, lowering switching losses and achieving 35µA quiescent current. When pulled high (PWM mode), it maintains fixed 1MHz operation for predictable EMI and improved noise immunity. This dual-mode flexibility is detailed in the Applications Information section (page 19) and Electrical Specifications (page 7).
What protection features are integrated into the ISL8002FRZ-T?
The ISL8002FRZ-T integrates overcurrent protection (3.5A peak limit), thermal shutdown (150°C with 25°C hysteresis), input undervoltage lockout (2.7V rising threshold), output overvoltage protection (115% VOUT), and output undervoltage detection (85% VOUT). All are documented in the Electrical Specifications table (pages 7–8) and Theory of Operation section (page 17).
Can the ISL8002FRZ-T operate at 100% duty cycle, and under what conditions?
Yes, the ISL8002FRZ-T supports 100% duty cycle operation-but only at its 1MHz switching frequency variant (confirmed in Table 1, page 3 and "100% Duty Cycle (1MHz Version)" section on page 18). At 2A load, this yields a dropout voltage of 200mV, enabling efficient low-VOUT regulation such as 1.2V from a 1.4V input. The 2MHz variants (e.g., ISL8002A) do not support 100% duty cycle.
ISL8002FRZ-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:
- 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)
ISL8002FRZ-T FAQ
1.How can I place an order for ISL8002FRZ-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL8002FRZ-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 ISL8002FRZ-T reliable?
The price and inventory of ISL8002FRZ-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL8002FRZ-T is usually 5 days.
3.What payment methods are accepted for ISL8002FRZ-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL8002FRZ-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL8002FRZ-T?
ISL8002FRZ-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL8002FRZ-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 ISL8002FRZ-T?
For technical support, including ISL8002FRZ-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL8002FRZ-T requirements.
6.How does Aetrix verify that ISL8002FRZ-T is sourced from the original manufacturer or authorized distributors?
All ISL8002FRZ-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 ISL8002FRZ-T meets industry standards.
7.What is the process for return or replacement of ISL8002FRZ-T?
All ISL8002FRZ-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL8002FRZ-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 ISL8002FRZ-T part is unused and in its original packaging.
Return procedure for ISL8002FRZ-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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