ISL85014

14A, 3.8V to 18V Input, Synchronous Buck Regulator

OVERVIEW

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 3.5mmx3.5mm Pb-free TQFN package with great thermal performance and 0.8mm maximum height.

KEY FEATURES

  • 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

BLOCK DIAGRAM

 Block Diagram

PARAMETRICS

Parameters
ISL85014
Basic Information
生产状态
Mass Production
拓扑
Buck
输出数量
1
输入电压最小值 (V)
3.8
输入电压最大值 (V)
18
输出电压最小值 (V)
0.6
输出电压最大值 (V)
5
输出电流最大值 (A)
14
IQ
3 mA
开关频率 (最大值) (MHz)
0.6
开关频率 (最小值) (MHz)
0.3
最大占空比 (%)
100
资质级别
Standard
峰值效率 (%)
98
POR
Yes
SYNCH功能
Yes
控制类型
Current Mode
开关频率范围 (MHz)
300 to 600KHz
温度范围
-40 to +125

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