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特性

  • Power input voltage range variable 3.8V to 18V
  • PWM output voltage adjustable from 0.6V
  • Up to 14A output load
  • Prebias start-up, fixed 3ms soft-start
  • Selectable fSW of 300kHz, 600kHz, and external synchronization up to 1MHz
  • Peak current mode control
  • DCM/CCM
  • Thermally compensated current limit
  • Internal/external compensation
  • Open-drain PG window comparator
  • Output overvoltage and thermal protection
  • Input overvoltage protection
  • Integrated boot diode with undervoltage detection
  • Selectable OCP schemes
  • Hiccup OCP
  • Latch-off
  • Compact size 3.5mmx3.5mm, 15 Ld TQFN

描述

The ISL85014 is a highly efficient, monolithic, synchronous buck regulator that can deliver 14A of continuous output current from a 3.8V to 18V input supply. The device uses current mode control architecture with a fast transient response and excellent loop stability. The ISL85014 integrates very low ON-resistance high-side and low-side FETs to maximize efficiency and minimize external component count. The minimum BOM and easy layout footprint are extremely friendly to space constraint systems. The operation frequency of this device can be set using the FREQ pin: 600kHz (FREQ = float) and 300kHz (FREQ = GND). The device can also be synchronized to an external clock up to 1MHz. Both high-side and low-side MOSFET current limit, along with reverse current limit, fully protects the regulator in an overcurrent event. Selectable OCP schemes can fit various applications. Other protections, such as input/output overvoltage and over-temperature, are also integrated into the device and provide required system level safety in the event of fault conditions. The ISL85014 is offered in a space saving 15 Ld 3.5mm x 3.5mm Pb-free TQFN package with great thermal performance and 0. 8mm maximum height.

产品参数

属性
Topology [Rail 1] Buck
Outputs (#) 1
Input Voltage (Min) [Rail 1] (V) 3.8
Input Voltage (Max) [Rail 1] (V) 18 - 18
Output Voltage (Min) [Rail 1] (V) 0.6
Output Voltage (Max) [Rail 1] (V) 5
Output Current (Max) [Rail 1] (A) 14
Switching Frequency Range (Typical) (kHz) 300 - 600
Control Type Current Mode
Peak Efficiency (%) 98
IQ [Rail 1] (µA) 3000
SYNCH Capability Yes
Qualification Level Standard
Temp. Range (°C) -40 to +125°C
Simulation Model Available iSim

封装选项

Pkg. Type Pkg. Dimensions (mm) Lead Count (#) Pitch (mm)
QFN 3.5 x 3.5 x 0.75 15 0.5

应用方框图

Full-function HMI with 4K Video Support Block Diagram
支持 4K 视频的全功能 HMI
高性能 HMI 设计提供无缝丝滑的 4K 视频、高级图形和可靠的连接。
Full-function HMI with FHD Video Support Block Diagram
支持FHD视频的全功能HMI

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Find out how Intersil's high efficient, compact 12V synchronous buck regulator family can meet your power requirements for 12V rails in industrial and infrastructure applications.