![ISL85402IRZ-TK Allicdata Electronics](https://files.allicdata.com/upload/common/default.jpg)
Allicdata Part #: | ISL85402IRZ-TK-ND |
Manufacturer Part#: |
ISL85402IRZ-TK |
Price: | $ 2.03 |
Product Category: | Integrated Circuits (ICs) |
Manufacturer: | Intersil |
Short Description: | IC REG MULT CONFG ADJ 2.5A 20QFN |
More Detail: | Buck, Boost, Buck-Boost Switching Regulator IC Pos... |
DataSheet: | ![]() |
Quantity: | 1000 |
1000 +: | $ 1.84338 |
Voltage - Output (Min/Fixed): | 0.8V |
Base Part Number: | ISL85402 |
Supplier Device Package: | 20-QFN (4x4) |
Package / Case: | 20-VFQFN Exposed Pad |
Mounting Type: | Surface Mount |
Operating Temperature: | -40°C ~ 105°C (TA) |
Synchronous Rectifier: | Both |
Frequency - Switching: | 200kHz ~ 2.2MHz |
Current - Output: | 2.5A |
Voltage - Output (Max): | 34V |
Series: | -- |
Voltage - Input (Max): | 36V |
Voltage - Input (Min): | 3V |
Number of Outputs: | 1 |
Output Type: | Adjustable |
Topology: | Buck, Boost, Buck-Boost |
Output Configuration: | Positive |
Function: | Step-Up, Step-Down, Step-Up/Step-Down |
Part Status: | Active |
Packaging: | Tape & Reel (TR) |
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Introduction
ISL85402IRZ-TK is an integrated DC-DC switching regulator designed to provide non-isolated, low input-voltage point-of-load regulation and power conversion with efficiency as high as 95%. It can operate with input voltages ranging from 2.5V to 5.5V and up to 2.5A load current. ISL85402IRZ-TK has a number of features and benefits including reduced component counts, minimized external component count, easily adjustable output voltage and selectable operating frequency.
Application fields and working principle
ISL85402IRZ-TK is ideal for applications such as Telecom/Datacom and industrial power systems. It is well suited for designing point-of-load (PoL) converters from 48V and regulated 3.3V, 5V or 12V output voltages. Its integrated features lower board space, component costs and enable fast prototyping. Its wide input voltage range, high switching frequency and integrated switch drive output stage also enable optimized design.
The ISL85402IRZ-TK incorporates a high-performance core in a 4x4mm 24-Lead QFN package. It is a buck-boost type switchmode DC-to-DC converter that combines a low-noise voltage feedback loop, coupled with a current-sensing amplifier and proprietary hysteretic control, allowing easy and efficient control of multiple output voltage points. The device adjusts the output voltage via a single resistor or DAC which allows a wide range of voltage-controlled operation outputs.
The device typically operates in frequency-mode, which means that the operating switch frequency is adjusted based on the DC bus voltage. This feature helps regulate the output voltage without the need for a voltage feedback loop, thus eliminating the need for bulky capacitors and EMI filters at the output. The device also features a power-good indicator that provides information about the post-regulation output voltages and a VBOST regulator that prevents voltage spikes during start-up.
The ISL85402IRZ-TK also includes a power-saving feature which reduces the current drawn from the input power supply during low power operation. This feature helps reduce the power consumption at light load conditions, thus reducing system energy costs. The device is RoHS compliant and meets the requirement of automotive and transportation applications.
Packaging and Layout
The ISL85402IRZ-TK is available in a 4x4mm, 24-Lead QFN package, with the ground and power connections located on the back side of the package. This design helps minimize package-level parasitics, to ensure proper power distribution and improve reliability. The device can be easily laid out on a printed-circuit board (PCB) using widely available components and design tools. The device has good ESD protection as well as protection from reverse leakage currents.
Conclusion
In conclusion, the ISL85402IRZ-TK is an excellent choice for point-of-load regulation and power conversion in automotive and transportation applications. Its wide input voltage range, high switching frequency, integrated switching drive output stage, reduced component count and minimized external component count make the device ideal for designing efficient and high performance power solutions. Its power-saving feature further improves the system efficiency while its small footprint helps minimize PCB size.
The specific data is subject to PDF, and the above content is for reference
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