Datasheet > ISL8018DEMO1Z

ISL8018DEMO1Z

更新时间： 2022-02-26 11:42:47

品牌	Logo	应用领域
瑞萨 - RENESAS		/
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21页	1237K
描述
8A Low Quiescent Current High Efficiency Synchronous Buck Regulator

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ISL8018DEMO1Z 数据手册

DATASHEET

ISL8018

FN7889

Rev 0.00

September 30, 2015

8A Low Quiescent Current High Efficiency Synchronous Buck Regulator

The ISL8018 is a high efficiency, monolithic, synchronous

Features

step-down DC/DC converter that can deliver up to 8A

continuous output current from a 2.7V to 5.5V input supply.

• High efficiency synchronous buck regulator with up to 97%

efficiency

The output voltage is adjustable from 0.6V to V . With an

adjustable current limit, reverse current protection, prebias

start and over-temperature protection, the ISL8018 offers a

highly robust power solution. It uses current control

architecture to deliver fast transient response and excellent

loop stability.

• ±10% output voltage margining

• Adjustable current limit

• Start-up with prebiased output

• Internal soft-start - 1ms or adjustable, internal/external

compensation

The ISL8018 integrates a pair of low ON-resistance P-channel

and N-channel internal MOSFETs to maximize efficiency and

minimize external component count. 100% duty-cycle

operation allows less than 250mV dropout at 8A output

current. Adjustable frequency and synchronization allow the

ISL8018 to be used in applications requiring low noise.

• Soft-stop output discharge during disabled

• Adjustable frequency from 500kHz to 4MHz - default at

1MHz

• External synchronization up to 4MHz - master to slave phase

shifting capability

The ISL8018 can be configured for discontinuous or forced

continuous operation at light load. Forced continuous operation

reduces noise and RF interference while discontinuous mode

provides high efficiency by reducing switching losses at light

loads.

• Peak current limiting, hiccup mode short-circuit protection

and over-temperature protection

Applications

• DC/DC POL modules

The ISL8018 is offered in a space saving 20 Ld 3x4 QFN lead

free package with exposed pad lead frames for excellent

thermal performance. The complete converter occupies less

• µC/µP, FPGA and DSP power

• Plug-in DC/DC modules for routers and switchers

• Portable instruments

than 96.8mm area.

See Ordering Information on page 2 for more detail.

• Test and measurement systems

• Li-ion battery powered devices

Related Literature

• UG052 “ISL8018DEMO1Z Demonstration Board User Guide”

• UG053 “ISL8018EVAL3Z Evaluation Board User Guide”

100

3.3V

OUT

PFM

3.3V

OUT

PWM

(A)

OUT

FIGURE 1. EFFICIENCY T = +25°C V = 5V

FN7889 Rev 0.00

Page 1 of 21

September 30, 2015

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