ISL8011

1.2A Integrated FETs, High Efficiency Synchronous Buck Regulator

OVERVIEW

ISL8011 is an integrated FET, 1.2A synchronous buck regulator for general purpose point-of load applications. It is optimized for generating low output voltages down to 0.8V. The supply voltage range is from 2.7V to 5.5V allowing the use from common 3.3V or 5V supply rails and Lithium ion battery inputs. It has guaranteed minimum output current of 1.2A. 1.5MHz pulse-width modulation (PWM) switching frequency allowing the use of small external components.

The ISL8011 includes 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 200mV dropout voltage at 1.2A.

The ISL8011 offers a 200ms Power-On-Reset (POR) timer at power-up. When shutdown, the ISL8011 discharges the output capacitor. Other features include internal digital soft-start, enable for power sequence, overcurrent protection, and thermal shutdown.

The ISL8011 is offered in a 10 Ld 3mmx3mm DFN package with 1mm maximum height. The complete converter occupies less than 1cm2 area.

KEY FEATURES

  • High Efficiency Synchronous Buck Regulator with Up to 95% Efficiency
  • 2.7V to 5.5V Supply Voltage
  • 1.2A Output Current
  • 100% Maximum Duty Cycle
  • Peak Current Limiting, Short Circuit Protection
  • 200ms Power-On Reset
  • 3% Output Accuracy Over-Temperature/Load/Line
  • Less than 1µA Logic Controlled Shutdown Current
  • Internal Loop Compensation
  • Internal Digital Soft-Start
  • Over-Temperature Protection
  • Enable
  • Small 10 Ld 3mmx3mm DFN
  • Pb-Free (RoHS Compliant)

PARAMETRICS

Parameters
ISL8011
Basic Information
Production Status
量産中
トポロジ
Buck
出力数
1
入力電圧 (V) (min)
2.7
入力電圧 (V) (max)
5.5
出力電圧 (V) (min)
0.8
出力電圧 (V) (max)
5.5
出力電流 (A) (max)
1.2
IQ
5 mA
スイッチング周波数 (max) (MHz)
1.6
スイッチング周波数 (min) (MHz)
1.6
最大デューティサイクル (%)
100
認定レベル
Standard
ピーク効率 (%)
96
POR
Yes
SYNCH機能
No
制御タイプ
Current Mode
スイッチング周波数範囲 (MHz)
1.6
CANサンプル
YES
温度範囲
-40 to +85

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