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Renesas ISL8002AIRZ-T7A
- Part No.:
- ISL8002AIRZ-T7A
- Manufacturer:
- Renesas
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
ISL8002AIRZ-T7A.pdf
- Description:
- IC REG BUCK ADJ 2A 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:122
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Product details
Overview
ISL8002AIRZ-T7A from Renesas (formerly Intersil) is a monolithic synchronous buck DC/DC regulator delivering up to 2A continuous output current from a 2.7V–5.5V input, operating at 2MHz switching frequency with internal/external compensation options and selectable PFM/PWM light-load operation. It integrates low rDS(ON) PMOS/NMOS FETs, eliminates boot capacitor requirement, and supports 100% duty cycle at 1MHz (not applicable to this 2MHz variant).
For engineers reviewing the ISL8002AIRZ-T7A datasheet, ISL8002AIRZ-T7A pinout, ISL8002AIRZ-T7A application, or ISL8002AIRZ-T7A equivalent, key selection criteria include its 2MHz high-frequency operation enabling compact 1.0–3.3µH inductor use, ±0.5% feedback voltage accuracy (0.600V typ), integrated overcurrent/thermal/UVLO/OVP protections, and TDFN-8 2mm×2mm package with exposed thermal pad.
Technical Context
The ISL8002AIRZ-T7A uses peak current-mode control with slope compensation (900mV/Ts) for stability across wide duty cycles and load transients. Its 2MHz fixed-frequency PWM operation ensures predictable EMI profile and fast transient response, while PFM mode reduces quiescent current to 35µA at no load.
It features dual MOSFET integration: PMOS high-side (117mΩ @ 5V, 200mA) and NMOS low-side (86mΩ @ 5V, 200mA), enabling high efficiency up to 95% and eliminating external bootstrap components. Protection includes cycle-by-cycle overcurrent limiting (3.5A typ), thermal shutdown at 150°C, and precise power-good monitoring via the PG pin.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7V to 5.5V - supports single-cell Li-ion, USB, and 3.3V/5V rail inputs without pre-regulation. |
| Output Current Max | 2A continuous - sufficient for FPGA core, DDR memory, or SoC I/O power domains. |
| Switching Frequency | 2MHz (±15%) - enables use of sub-2.2µH inductors and <22µF ceramic output capacitance for space-constrained designs. |
| Feedback Voltage | 0.600V ±5mV - sets output voltage via resistor divider; enables precise 0.6V–5.5V programmable VOUT. |
| Quiescent Current | 35µA (PFM, no load) - extends battery life in always-on or low-duty-cycle portable systems. |
| Efficiency Peak | 95% - achieved at mid-load (e.g., 1.2V/1A, 3.3V/1A), minimizing thermal dissipation in sealed enclosures. |
| Protection Features | OCP (3.5A typ), thermal shutdown (150°C), UVLO (2.7V rising), OVP (115% VOUT), UVP (85% VOUT) - ensures robust operation under fault conditions without external circuitry. |
Pinout & Package
ISL8002AIRZ-T7A is housed in an 8-pin 2mm×2mm TDFN package with exposed thermal pad (Pin 9) for enhanced heat dissipation. The package footprint occupies <0.10 in² and requires thermal vias to PGND plane per datasheet layout guidelines.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 1) | Input power supply | Bias source for internal LDO and power stage; requires ≥10µF ceramic decoupling close to pin. |
| EN (Pin 2) | Enable control | Active-high logic input (1.4V threshold); disables regulator and discharges output via 100Ω PHASE path when low. |
| MODE (Pin 3) | Operation mode select | Logic-high = forced PWM; logic-low = PFM; internal 1MΩ pull-down prevents floating state. |
| PG (Pin 4) | Power-good indicator | Open-drain output pulled low during soft-start or if VOUT deviates >5% from regulation; includes 5MΩ internal pull-up. |
| COMP (Pin 5) | Error amplifier output | Configurable for internal compensation (tied to VIN) or external RC network for custom loop tuning. |
| FB (Pin 6) | Feedback input | Connects to resistor divider; senses VOUT for regulation and triggers PG/UVP/OVP functions. |
| PGND (Pin 7) | Power/analog ground | Common return for power stage and analog circuits; must connect directly to PCB ground plane. |
| PHASE (Pin 8) | Switching node | Connects to inductor; carries high di/dt switching current; discharged via 100Ω when disabled. |
Key Features
| Feature | Design Value |
|---|---|
| PMOS high-side switch | Eliminates boot capacitor requirement, reducing BOM count and layout complexity. |
| Selectably PFM/PWM operation | Enables ultra-low IQ (35µA) in standby while maintaining low-noise PWM performance under dynamic load. |
| Internal/external compensation | Flexible loop stabilization: default internal RC (27pF/200kΩ) or user-defined network for custom transient response. |
| 100% duty cycle capability (1MHz version only) | Not applicable to ISL8002AIRZ-T7A (2MHz variant), but confirms architecture supports dropout-critical applications in lower-frequency variants. |
| Integrated protection suite | Single-chip solution for overcurrent, short-circuit, thermal, UVLO, and over/under-voltage faults - no external supervision IC needed. |
Applications
| FPGA Core Power | USB-Powered Peripheral |
|---|---|
Use Scenario: Supplying 1.2V/1.5A to Xilinx Artix-7 or Intel Cyclone V FPGA core logic with tight ripple and fast load-step requirements. IC Role / Device Role / Timing Role: Primary synchronous buck regulator providing regulated core voltage with 2MHz switching for minimal inductor size and fast transient recovery. Use Value: Achieves <15mV output ripple at 2A step load (Fig. 46) and maintains regulation within ±0.5% across temperature, ensuring FPGA timing margin integrity. |
Use Scenario: Powering Bluetooth audio dongle or USB-C accessory from 5V bus with strict size and efficiency constraints. IC Role / Device Role / Timing Role: Compact, high-efficiency DC/DC converter stepping 5V USB input to 3.3V system rail in PFM mode during idle. Use Value: Delivers 92% efficiency at 10mA load (Fig. 4) and draws only 35µA quiescent current, extending battery backup runtime by >30% vs. linear regulators. |
| LCD Panel Bias Supply | Industrial Sensor Node |
Use Scenario: Generating stable 2.5V/1.8A for TFT-LCD source driver ICs in portable medical displays. IC Role / Device Role / Timing Role: High-current point-of-load regulator with integrated OVP/UVP to prevent display latch-up during input transients. Use Value: Maintains <±1% load regulation (Fig. 14) and responds to 1A load steps in <10µs, preventing visible screen artifacts during rapid brightness changes. |
Use Scenario: Powering LoRaWAN sensor node (MCU + RF transceiver) from coin cell or energy harvester with intermittent input. IC Role / Device Role / Timing Role: Ultra-low-IQ buck converter enabling multi-year operation; EN pin synchronized to MCU sleep/wake cycles. Use Value: Shuts down to 5µA (ISD spec) and restarts in <1ms (Fig. 21), minimizing energy loss during deep-sleep intervals without compromising wake-up latency. |
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-T7A | 1MHz switching frequency, same 2A rating and package; higher minimum on-time (80ns vs. 60ns at 2MHz). | Better suited for higher-VOUT/lower-IOUT applications where larger inductors are acceptable and EMI filtering is prioritized. | Select ISL8002IRZ-T7A when board area allows ≥2.2µH inductors and 1MHz EMI profile aligns with system compliance targets. |
| TPS62231DRVR | Texas Instruments 2MHz, 2A buck; 0.6V feedback, but requires external boot capacitor and lacks integrated OVP/UVP. | Needs additional protection components for robust industrial deployment; slightly higher BOM cost and layout effort. | Choose TPS62231DRVR only if TI ecosystem alignment or specific qualification requirements override need for fully integrated protection. |
Compared with ISL8002AIRZ-T7A, the ISL8002IRZ-T7A trades higher-frequency transient response for relaxed EMI filtering and larger inductor compatibility, while the TPS62231DRVR demands external fault management circuitry - making ISL8002AIRZ-T7A optimal for space-constrained, safety-critical, or fast-transient designs requiring minimal external components.
Availability
ISL8002AIRZ-T7A is available at Aetrix Electronics and suitable for FPGA power, USB-powered peripherals, LCD panel bias supplies, and industrial sensor nodes requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for ISL8002AIRZ-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 Corporation acquired Intersil in 2017 and continues to develop and support its high-performance analog and power management portfolio, including DC/DC regulators for demanding embedded and industrial applications.
The ISL8002AIRZ-T7A belongs to Renesas' compact synchronous buck regulator product line, designed specifically for space-constrained, battery-sensitive, and high-reliability applications such as portable medical devices, industrial IoT nodes, and consumer electronics with stringent EMI and efficiency requirements.
FAQ
What is the maximum output current and input voltage range supported by the ISL8002AIRZ-T7A?
The ISL8002AIRZ-T7A delivers up to 2A continuous output current and operates from a 2.7V to 5.5V input supply. This range accommodates single-cell Li-ion batteries (2.7–4.2V), USB 5V sources, and standard 3.3V/5V system rails. The device maintains regulation across this full input range while sustaining 2A load at junction temperatures up to +125°C, as validated in the datasheet's electrical specifications table.
Does the ISL8002AIRZ-T7A require an external boot capacitor?
No, the ISL8002AIRZ-T7A does not require an external boot capacitor because it integrates a PMOS high-side MOSFET. Unlike NMOS-based buck controllers, the PMOS architecture eliminates the need for a charge pump or bootstrap capacitor, reducing component count, PCB area, and potential failure points. This design choice is explicitly confirmed in the datasheet's "Features" section and functional block diagram.
How does the MODE pin affect operation of the ISL8002AIRZ-T7A?
The MODE pin on the ISL8002AIRZ-T7A selects between PFM (pin grounded or ≤0.4V) and forced PWM (pin tied to VIN or ≥1.4V). In PFM mode, the regulator reduces switching frequency at light loads to minimize quiescent current (35µA typ); in PWM mode, it maintains constant 2MHz operation for predictable EMI and improved noise immunity. An internal 1MΩ pull-down prevents undefined states if left unconnected.
What protection features are integrated into the ISL8002AIRZ-T7A?
The ISL8002AIRZ-T7A integrates overcurrent protection (3.5A typical peak limit), thermal shutdown (150°C trip), input undervoltage lockout (2.7V rising threshold), output overvoltage protection (115% VOUT), and output undervoltage detection (85% VOUT). These functions operate autonomously without external components, as verified in the "Protections" section of the FN7888 datasheet and confirmed by functional block diagram signals (OCP, SCP, UV, OV, thermal sense).
Can the ISL8002AIRZ-T7A be used with external compensation, and what are the benefits?
Yes, the ISL8002AIRZ-T7A supports both internal and external compensation via the COMP pin. When tied to VIN, it uses an internal 27pF/200kΩ network; when connected to an external RC network to GND, it enables custom loop tuning for optimized phase margin and transient response. External compensation is particularly valuable in applications with non-standard output capacitors or stringent load-step requirements, as detailed in the "Loop Compensation Design" section (page 20) of the datasheet.
ISL8002AIRZ-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:
- 2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TDFN-EP (2x2)
ISL8002AIRZ-T7A FAQ
1.How can I place an order for ISL8002AIRZ-T7A through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL8002AIRZ-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 ISL8002AIRZ-T7A reliable?
The price and inventory of ISL8002AIRZ-T7A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL8002AIRZ-T7A is usually 5 days.
3.What payment methods are accepted for ISL8002AIRZ-T7A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL8002AIRZ-T7A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL8002AIRZ-T7A?
ISL8002AIRZ-T7A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL8002AIRZ-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 ISL8002AIRZ-T7A?
For technical support, including ISL8002AIRZ-T7A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL8002AIRZ-T7A requirements.
6.How does Aetrix verify that ISL8002AIRZ-T7A is sourced from the original manufacturer or authorized distributors?
All ISL8002AIRZ-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 ISL8002AIRZ-T7A meets industry standards.
7.What is the process for return or replacement of ISL8002AIRZ-T7A?
All ISL8002AIRZ-T7A units undergo pre-shipment inspection (PSI). If there is an issue with ISL8002AIRZ-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 ISL8002AIRZ-T7A part is unused and in its original packaging.
Return procedure for ISL8002AIRZ-T7A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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