ISL80019A

Compact Synchronous Buck Regulators

OVERVIEW

The ISL8002, ISL8002A, ISL80019 and ISL80019A are highly efficient, monolithic, synchronous step-down DC/DC converters that can deliver up to 2A of continuous output current from a 2.7V to 5.5V input supply. They use peak current mode control architecture to allow very low duty cycle operation. They operate at either 1MHz or 2MHz switching frequency, thereby providing superior transient response and allowing for the use of small inductors. They also have excellent stability and provide both internal and external compensation options.

The ISL8002, ISL8002A, ISL80019 and ISL80019A integrate very low rDS(ON) MOSFETs in order to maximize efficiency. In addition, since the high-side MOSFET is a PMOS, the need for a Boot capacitor is eliminated, thereby reducing external component count. They can operate at 100% duty cycle (at 1MHz) with a dropout of 200mV at 2A output current.

These devices can be configured for either PFM (discontinuous conduction) or PWM (continuous conduction) operation at light load. PFM provides high efficiency by reducing switching losses at light loads and PWM reduces noise susceptibility and RF interference.

These devices are offered in a space saving 8 pin 2mmx2mm TDFN lead free package with exposed pad for improved thermal performance. The complete converter occupies less than 0.10in2 area.

KEY FEATURES

  • VIN range 2.7V to 5.5V
  • VOUT range is 0.6V to VIN
  • IOUT maximum is 1.5A or 2A
  • Switching frequency is 1MHz or 2MHz
  • Internal or external compensation option
  • Selectable PFM or PWM operation option
  • Overcurrent and short circuit protection
  • Over-temperature/thermal protection
  • VIN Undervoltage Lockout and VOUT Overvoltage Protection
  • Up to 95% peak efficiency

PARAMETRICS

Parameters
ISL80019A
Basic Information
生产状态
Mass Production
拓扑
Buck
输出数量
1
输入电压最小值 (V)
2.7
输入电压最大值 (V)
5.5
输出电压最小值 (V)
0.6
输出电压最大值 (V)
5.5
输出电流最大值 (A)
1.5
IQ
35 µA
开关频率 (最大值) (MHz)
2.3
开关频率 (最小值) (MHz)
1.7
最大占空比 (%)
See Datasheet
资质级别
Standard
峰值效率 (%)
95
POR
No
BOM总占用面积 (mm2)
64
SYNCH功能
No
控制类型
Current Mode
开关频率范围 (MHz)
1.7 to 2.3 MHz
CAN 采样
YES
温度范围
-40 to +125

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