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Renesas ISL8002BIRZ-T
- Part No.:
- ISL8002BIRZ-T
- Manufacturer:
- Renesas
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
ISL8002BIRZ-T.pdf
- Description:
- IC REG BUCK ADJ 2A 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,272
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Product details
Overview
ISL8002BIRZ-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 2MHz switching frequency with peak efficiency of 95%. It integrates low rDS(ON) PMOS/NMOS power switches, eliminates boot capacitor requirement, and supports programmable soft-start and output voltage tracking for FPGA and POL applications.
For engineers reviewing the ISL8002BIRZ-T datasheet, ISL8002BIRZ-T pinout, ISL8002BIRZ-T application, or ISL8002BIRZ-T equivalent, key selection criteria include its 2MHz fixed-frequency PWM/PFM dual-mode operation, internal compensation option, -40°C to +85°C industrial temperature range, and 8-lead 2mm×2mm TDFN package with exposed thermal pad.
Technical Context
The ISL8002BIRZ-T employs peak current-mode control with integrated slope compensation (900mV/Ts) and a transconductance error amplifier (80µA/V) with internal 27pF/200kΩ compensation network. Its architecture enables stable regulation down to 0.8V output with ±0.83% feedback voltage accuracy (0.595V–0.605V) across -40°C to +85°C.
It features dual-mode operation: forced PWM (MODE = VIN) for fast transient response and low-noise performance, or PFM (MODE = GND) for ultra-low quiescent current (35µA typical) at light loads. Protection includes overcurrent (3.2A typ), thermal shutdown (150°C), UVLO (2.7V rising), and output overvoltage detection via FB monitoring.
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 external LDO pre-regulation. |
| Output Current | 2A continuous - sufficient for core logic, DDR memory termination, and mid-power FPGA I/O rails. |
| Switching Frequency | 2MHz nominal (1.7–2.3MHz) - enables use of sub-2.2µH inductors and reduces output ripple without compromising EMI filtering size. |
| Feedback Voltage | 0.600V ±5mV (–40°C to +85°C) - sets precise output voltage via external resistor divider; supports 0.8V–3.3V outputs. |
| Efficiency | Up to 95% peak - achieved via integrated 117mΩ PMOS and 86mΩ NMOS switches, minimizing conduction loss at 2A load. |
| Soft-Start Time | 0.1ms (external) or 1ms (internal) - configurable ramp rate prevents inrush current during power-up of sensitive loads. |
| Operating Temperature | –40°C to +85°C - qualified for industrial and embedded systems with ambient thermal constraints. |
Pinout & Package
The ISL8002BIRZ-T is housed in an 8-lead 2mm × 2mm TDFN package (RoHS-compliant, L8.2x2C drawing) with exposed thermal pad (EPAD) connected to PGND for optimal thermal dissipation (θJA = 71°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 1) | Input power supply | Supplies both power stage and internal bias regulator; requires ≥10µF ceramic decoupling close to pin. |
| EN (Pin 2) | Enable control | Active-high logic input (1.4V threshold); pulls PHASE to GND via 100Ω when disabled for controlled discharge. |
| MODE (Pin 3) | Operation mode select | Logic high = forced PWM (fast transient, low noise); logic low = PFM (35µA IQ, high light-load efficiency). |
| PG (Pin 4) | Power-good indicator | Open-drain output with 5MΩ pull-up; asserts low during soft-start and when VOUT falls below 85% of regulation. |
| SS/TR (Pin 5) | Soft-start & tracking control | Configures ramp time (via RC) or enables output voltage tracking with external resistor divider (R3/R4). |
| FB (Pin 6) | Feedback input | Connects to resistor divider midpoint; monitors output for regulation, UVLO, and OVP functions. |
| PGND (Pin 7) | Power/analog ground | Must be tied directly to PCB ground plane; EPAD soldered to same plane for thermal and electrical integrity. |
| PHASE (Pin 8) | Switching node | Connects to inductor; carries high di/dt switching current; discharged via 100Ω when EN = low. |
Key Features
| Feature | Design Value |
|---|---|
| PMOS high-side switch | Eliminates boot capacitor requirement, reducing BOM count and layout complexity. |
| Selectably PFM/PWM operation | Enables system-level optimization: PFM extends battery life in standby; PWM ensures clean power during active processing. |
| Output tracking & sequencing | Supports coordinated startup/shutdown of multiple rails (e.g., core + I/O) using SS/TR and PG pins without external controllers. |
| Integrated protection suite | Includes overcurrent (3.2A), thermal shutdown (150°C), UVLO (2.7V), and output overvoltage detection - no external fault management needed. |
| Internal compensation | Reduces external component count by embedding 27pF/200kΩ compensation network; simplifies design validation. |
Applications
| FPGA Core Power | Industrial Sensor Node |
|---|---|
|
Use Scenario: Supplying 1.2V/1.8V core voltage to Xilinx Artix-7 or Intel Cyclone V FPGA under dynamic load conditions. IC Role / Device Role / Timing Role: Primary synchronous buck regulator providing tightly regulated, low-noise DC output with fast transient response. Use Value: 2MHz switching and internal compensation enable compact 64mm² solution; PFM mode extends battery runtime in portable configurations. |
Use Scenario: Powering low-power microcontroller, analog front-end, and wireless transceiver (e.g., BLE SoC) in factory-floor sensor nodes. IC Role / Device Role / Timing Role: Single-chip POL converter delivering stable 3.3V or 2.5V from 3.6V Li-ion battery or 5V field bus. Use Value: 35µA quiescent current in PFM mode maximizes operational lifetime; thermal shutdown protects against enclosure overheating. |
| Telecom Line Card | Medical Diagnostic Module |
|
Use Scenario: Generating 1.5V/1.8V auxiliary rails for SERDES, PHY, and packet processor ICs on telecom line cards with strict EMI limits. IC Role / Device Role / Timing Role: High-frequency buck regulator with selectable PWM mode to minimize conducted EMI and meet EN55022 Class B. Use Value: 2MHz fixed frequency allows predictable EMI filtering; low output ripple (<20mVpp) prevents signal integrity degradation. |
Use Scenario: Providing isolated, low-noise 1.8V and 3.3V supplies for ADCs, precision amplifiers, and digital logic in portable ultrasound or ECG modules. IC Role / Device Role / Timing Role: Precision-regulated DC/DC converter with 0.6V ±5mV reference and <0.3%/A load regulation. Use Value: Tight VFB tolerance and excellent line/load regulation ensure measurement accuracy; RoHS-compliant TDFN meets medical safety standards. |
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 | 3A output, 2.5V–6V input, 2.5MHz switching, but requires external compensation and boot capacitor. | Lacks integrated tracking/sequencing; higher IQ (18µA) but no PFM mode - less suitable for battery-critical designs. | Preferred when >2A output or wider input range is required; verify layout for boot capacitor routing. |
| MP2143GJ-Z | 2A output, 2.5V–5.5V input, 2MHz, integrated soft-start, but only PWM mode (no PFM) and no tracking capability. | No light-load efficiency optimization; lacks SS/TR pin functionality - unsuitable for multi-rail sequencing. | Consider for cost-sensitive, fixed-PWM applications where soft-start suffices and sequencing is handled externally. |
Compared with TPS62130ARGTR and MP2143GJ-Z, the ISL8002BIRZ-T uniquely combines PFM/PWM dual-mode operation, output tracking, internal compensation, and boot-capacitor-free PMOS architecture - making it optimal for space-constrained, battery-aware, and multi-rail embedded systems.
Availability
ISL8002BIRZ-T is available at Aetrix Electronics and suitable for FPGA core power, industrial sensor nodes, and telecom line card applications requiring stable component supply, long-term manufacturability, and RoHS-compliant packaging.
Supply support for ISL8002BIRZ-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 full technical and supply chain support for legacy Intersil power management products including the ISL8002B family.
The ISL8002B series was designed specifically for compact, high-efficiency point-of-load regulation in battery-powered and space-constrained industrial systems - emphasizing low IQ, thermal robustness, and simplified layout.
FAQ
What is the maximum output current and input voltage range supported by the ISL8002BIRZ-T?
The ISL8002BIRZ-T delivers up to 2A of continuous output current and operates from a 2.7V to 5.5V input voltage range. This makes it compatible with common single-cell Li-ion batteries (2.7–4.2V), USB 5V supplies, and regulated 3.3V intermediate rails. The device maintains regulation and protection functionality across this full range, including undervoltage lockout activation at 2.7V (rising) and dropout recovery down to 2.2V (falling).
Does the ISL8002BIRZ-T require an external boot capacitor?
No, the ISL8002BIRZ-T does not require an external boot capacitor because it uses a PMOS high-side switch instead of an NMOS. This architecture eliminates the need for charge-pump or bootstrap circuitry, reducing component count, board area, and potential failure points. The internal bias regulator derives power directly from VIN, enabling simpler and more reliable layout compared to NMOS-based buck controllers.
How does the MODE pin affect efficiency and transient response in the ISL8002BIRZ-T?
The MODE pin selects between PFM (pin grounded) and PWM (pin tied to VIN) operation. In PFM mode, the ISL8002BIRZ-T achieves ultra-low quiescent current (35µA typical), maximizing light-load efficiency for battery longevity. In PWM mode, it maintains constant 2MHz switching for superior transient response (<100ns minimum on-time) and lower output voltage ripple - critical for noise-sensitive digital loads like FPGAs and ADCs.
Can the ISL8002BIRZ-T support voltage tracking for multiple power rails?
Yes, the ISL8002BIRZ-T supports output voltage tracking via the SS/TR pin. By connecting an external resistor divider (R3/R4) matching the main FB divider ratio (R1/R2), the device can synchronize startup/shutdown timing with another regulator. This enables coincidental or ratiometric sequencing - essential for meeting FPGA or ASIC power-up requirements without external supervisors or complex timing ICs.
What thermal performance can be expected from the ISL8002BIRZ-T in its 2mm×2mm TDFN package?
The ISL8002BIRZ-T in its 8-lead 2mm×2mm TDFN package achieves θJA = 71°C/W and θJC = 7°C/W when the exposed pad (EPAD) is properly soldered to a solid PGND plane with multiple thermal vias. At 2A load and 5V input, junction temperature rise remains within safe limits (<60°C above ambient) under typical PCB copper area - enabling reliable operation in sealed enclosures or stacked modules without forced airflow.
ISL8002BIRZ-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):
- 4.4V
- Current - Output:
- 2A
- Frequency - Switching:
- 2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TDFN-EP (2x2)
ISL8002BIRZ-T FAQ
1.How can I place an order for ISL8002BIRZ-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL8002BIRZ-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 ISL8002BIRZ-T reliable?
The price and inventory of ISL8002BIRZ-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL8002BIRZ-T is usually 5 days.
3.What payment methods are accepted for ISL8002BIRZ-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL8002BIRZ-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL8002BIRZ-T?
ISL8002BIRZ-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL8002BIRZ-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 ISL8002BIRZ-T?
For technical support, including ISL8002BIRZ-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL8002BIRZ-T requirements.
6.How does Aetrix verify that ISL8002BIRZ-T is sourced from the original manufacturer or authorized distributors?
All ISL8002BIRZ-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 ISL8002BIRZ-T meets industry standards.
7.What is the process for return or replacement of ISL8002BIRZ-T?
All ISL8002BIRZ-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL8002BIRZ-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 ISL8002BIRZ-T part is unused and in its original packaging.
Return procedure for ISL8002BIRZ-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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