Features
- VIN range 2.7V to 5.5V
- Up to 3A of output current
- Switching frequency of 1MHz or 2MHz
- 35μA quiescent current (ISL80031 and ISL80031A)
- Overcurrent and short-circuit protection
- Over-temperature/thermal protection
- Negative current protection
- Power-good and enable
- 100% duty cycle
- Internal soft-start and soft-stop
- VIN undervoltage lockout and VOUT overvoltage protection
- Up to 95% peak efficiency
Description
The ISL80030, ISL80030A, ISL80031, and ISL80031A are highly efficient, monolithic, synchronous step-down DC/DC converters that can deliver up to 3A of continuous output current from a 2. 7V to 5. 5V input supply. They use peak current mode control architecture to allow very low duty cycle operation. These devices operate at either a 1MHz or 2MHz switching frequency, thereby providing superior transient response and allowing for the use of small inductors. They also have excellent stability. The ISL80030, ISL80030A, ISL80031, and ISL80031A integrate very low rDS(ON) MOSFETs to maximize efficiency. In addition, because the high-side MOSFET is a PMOS, the need for a Boot capacitor is eliminated, thereby reducing external component count. The devices can operate at 100% duty cycle. The ISL80030 and ISL80030A are configured for PWM pulse width modulation operation and provide a fast transient response, which helps reduce the output noise and RF interference. The ISL80031 and ISL80031A are configured for PFM discontinuous conduction operation and provide high efficiency by reducing switching losses at light loads. These devices are offered in a space saving 8 Ld 2mmx2mm DFN Pb-free package with exposed pad for improved thermal performance. The complete converter occupies less than 64mm2 area.
Parameters
| Attributes | Value |
|---|---|
| Topology [Rail 1] | Buck |
| Outputs (#) | 1 |
| Input Voltage (Min) [Rail 1] (V) | 2.7 |
| Input Voltage (Max) [Rail 1] | 5.5 |
| Output Voltage (Min) [Rail 1] (V) | 0.6 |
| Output Voltage (Max) [Rail 1] (V) | 5.5 |
| Output Current (Max) [Rail 1] (A) | 3 |
| Switching Frequency Range (Typical) (kHz) | 2000 - 2000 |
| Control Type | Current Mode |
| Peak Efficiency (%) | 95 |
| IQ [Rail 1] (µA) | 35 |
| SYNCH Capability | No |
| Qualification Level | Standard |
| Temp. Range (°C) | -40 to +125°C |
Package Options
| Pkg. Type | Pkg. Dimensions (mm) | Lead Count (#) | Pitch (mm) |
|---|---|---|---|
| DFN | 2.0 x 2.0 x 0.90 | 8 | 0.5 |
Application Block Diagrams
 | Power Sequencer & I/O Expander for Printers (PPC/MFP) An MCU-based power sequencer and I/O expander for high-performance PPC/MFP printers. |
 | High-Speed 5G to Wi-Fi Converter for CPE Convert 5G to Wi-Fi with dual-band 4T4R Wi-Fi 6, ideal for 5G routers and efficient networking. |
 | 400ZR Optical Module Optimize 400Gb Ethernet transport over DCI links with a compact 400ZR module for high performance and low power. |
Complete Your Design
Explore complementary products to elevate your design
Renesas Boards & Kits
Sync Buck Converter Demo Board with 2.7V to 5.5V Vin Range and a 1.8V 3A Output
The ISL80031ADEMO1Z demonstration board provides a simple platform for evaluating the performance of the ISL80031A low quiescent current mode converters.
These devices are highly efficient, monolithic, synchronous step-down DC/DC converters that can deliver up to 3A of continuous output... Read More
RZ/V2H Quad-core Vision AI MPU Evaluation Kit
The RZ/V2H AI MPU evaluation kit (RTK0EF0168C04000BJ) is used to evaluate Renesas' RZ/V2H quad-core vision AI MPU. The kit includes a CPU board and an expansion (EXP) board. It supports RZ/V2H standard software packages and enables easy implementation of software development tasks such as low... Read More
Test This Board Remotely
Evaluation Board Kit for RZ/T2H
The Evaluation Board Kit for RZ/T2H is an evaluation and development kit for the RZ/T2H MPU. Since it has an on-board emulator, you can start evaluation by simply connecting the bundled cable with your PC. This board includes rich functional ICs such as Gigabit Ethernet PHY, non-volatile memory... Read More
Evaluation Board Kit for RZ/N2H
The Evaluation Board Kit for RZ/N2H is an evaluation and development kit for the RZ/N2H MPU. Since it has an on-board emulator, you can start evaluation by simply connecting the bundled cable with your PC. This board includes rich functional ICs such as Gigabit Ethernet PHY, non-volatile memory... Read More
RZ/V2N Quad-core Vision AI MPU Evaluation Kit
The RZ/V2N AI MPU Evaluation Kit V2.0 (RTK0EF0186C03001BJ) is used to evaluate our RZ/V2N quad-core vision AI MPU. The kit includes a CPU board and an expansion board (EXP board). V2.0 adds support for the DDR Suspend to RAM function, and the power supply circuit configuration has been changed... Read More
Partner Boards & Kits
RZ/V2H SMARC Module
SOMDEVICES uSMARC RZ/V2N
V2H 4X SBC
V2H Single Board Computer (SBC)
V2H System on Module (SoM)
V2N SMARC Module
IEEE 1588 Solution Reference Design
This IEEE 1588 Solution demonstrates clock synchronization up to less than 50ns between Master and Slave to reconstruct accurate synchronization signals for 5G networks.
IEEE 1588 is a precise time protocol (PTP) system used to synchronize clocks in computer networks. In local area networks, it... Read More
Test This Board Remotely
Support Communities
-
Renesas Power section schematic review
Hello Team, I am attaching the schematic of power regulator sections used in one of our design which uses Renesas power regulator. RAA211250GSP and ISL80031AFRZ Could you please help to review the same. Power architecture block diagram also provided.
Mar 11, 2025
Knowledge Base
-
Are the ISL80031 and ISL80031A interchangeable?
Question: If I decide to change from the 1MHZ version to the 2MHz version, or vice versa, are the ISL80031 and the ISL80031A interchangeable? Would I need to make any other component changes in my design? Answer: In this case, the switching frequency changed. The inductance and/or output ...
-
What should I consider when choosing between the ISL80031 and the ISL80031A?
Question: The switching frequency for the ISL80031 is 1MHz and for the ISL80031A it is 2MHz. What should I consider when choosing between these 2 parts? Answer: The 1MHz part is recommended for input voltage of 5V. The 2MHz is geared for 3.3V input system. These parts are operated ...
Support Communities
