Datasheet > ISL85412

ISL85412

更新时间： 2024-11-16 01:05:55

品牌	Logo	应用领域
瑞萨 - RENESAS		/
页数	文件大小	规格书
19页	1099K
描述
Wide VIN 1.2A Synchronous Buck Regulator

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ISL85412 数据手册

DATASHEET

ISL854102

Wide V 1.2A Synchronous Buck Regulator

FN8870

Rev 0.00

July 1, 2016

The ISL854102 is a 1.2A synchronous buck regulator with an

input range of 3V to 40V. It provides an easy to use, high

efficiency, low BOM count solution for a variety of applications.

Features

• Wide input voltage range 3V to 40V

• Synchronous operation for high efficiency

• No compensation required

The ISL854102 integrates both high-side and low-side NMOS

FETs and features a PFM mode for improved efficiency at light

loads. This feature can be disabled if a forced PWM mode is

desired. The part switches at a default frequency of 500kHz,

however, may also be programmed using an external resistor

from 300kHz to 2MHz. The ISL854102 has the ability to utilize

internal or external compensation. By integrating both NMOS

devices and providing internal configuration options, minimal

external components are required, reducing BOM count and

complexity of design.

• Integrated high-side and low-side NMOS devices

• Selectable PFM or forced PWM mode at light loads

• Internal fixed (500kHz) or adjustable switching frequency

300kHz to 2MHz

• Continuous output current up to 1.2A

• Internal or external soft-start

• Minimal external components required

• Power-good and enable functions available

With the wide V range and reduced BOM, the part provides

an easy to implement design solution for a variety of

applications while giving superior performance. It will provide

a very robust design for high voltage industrial applications as

well as an efficient solution for battery powered applications.

Applications

• Industrial control

The part is available in a small Pb-free 4mmx3mm DFN plastic

package with a full-range industrial temperature of -40°C to

+125°C.

• Medical devices

• Portable instrumentation

• Distributed power supplies

• Cloud infrastructure

100

COMP

SYNC

BOOT

VIN

R₂

R₃

C_FB

C_BOOT

100nF

GND

C_VIN

10µF

VCC

VIN=12V

VIN=15V

VIN=24V

C_VCC

1µF

V_OUT

PHASE

PGND

L₁

22µH

C_OUT

10µF

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

OUTPUT LOAD (A)

1.1 1.2

INTERNAL DEFAULT PARAMETER SELECTION

FIGURE 2. EFFICIENCY vs LOAD, PFM, V

OUT

= 5V, L = 22µH

FIGURE 1. TYPICAL APPLICATION

FN8870 Rev 0.00

July 1, 2016

Page 1 of 19

12 3 4 5 6 7...19

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与ISL85412相关器件

型号	品牌	获取价格	描述	数据表
ISL85412DEMO1Z	RENESAS	获取价格	Wide VIN 150mA Synchronous Buck Regulator
ISL85412EVAL1Z	RENESAS	获取价格	Wide VIN 150mA Synchronous Buck Regulator
ISL85412FRTZ	RENESAS	获取价格	Wide VIN 150mA Synchronous Buck Regulator; DFN8; Temp Range: -40° to 125°C
ISL85412FRTZ-T	RENESAS	获取价格	Wide VIN 150mA Synchronous Buck Regulator
ISL85412FRTZ-T7A	RENESAS	获取价格	Wide VIN 150mA Synchronous Buck Regulator; DFN8; Temp Range: -40° to 125°C
ISL85413	RENESAS	获取价格	Wide VIN 1.2A Synchronous Buck Regulator
ISL85413DEMO1Z	RENESAS	获取价格	Wide VIN 300mA Synchronous Buck Regulator
ISL85413EVAL1Z	RENESAS	获取价格	Wide VIN 300mA Synchronous Buck Regulator
ISL85413FRTZ	RENESAS	获取价格	Wide VIN 300mA Synchronous Buck Regulator
ISL85413FRTZ-T7A	RENESAS	获取价格	Wide VIN 300mA Synchronous Buck Regulator; DFN8; Temp Range: -40° to 125°C

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