ISL80030

3A Synchronous Buck Converter in 2x2 DFN Package

OVERVIEW

The ISL80030, ISL80030A, ISL80031, and ISL80031A are highly efficient, monolithic, synchronous step-down DC/DC converters that can deliver up to 3A 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. These devices operate at either a 1MHz or 2MHz switching frequency, thereby providing superior transient response and allowing for the use of small inductors. They also have excellent stability.

The ISL80030, ISL80030A, ISL80031, and ISL80031A integrate very low rDS(ON) MOSFETs to maximize efficiency. In addition, because the high-side MOSFET is a PMOS, the need for a Boot capacitor is eliminated, thereby reducing external component count. The devices can operate at 100% duty cycle.

The ISL80030 and ISL80030A are configured for PWM pulse width modulation operation and provide a fast transient response, which helps reduce the output noise and RF interference.

The ISL80031 and ISL80031A are configured for PFM discontinuous conduction operation and provide high efficiency by reducing switching losses at light loads.

These devices are offered in a space saving 8 Ld 2mmx2mm DFN Pb-free package with exposed pad for improved thermal performance. The complete converter occupies less than 64mm2 area.

KEY FEATURES

  • VIN range 2.7V to 5.5V
  • Up to 3A of output current
  • Switching frequency of 1MHz or 2MHz
  • 35μA quiescent current (ISL80031 and ISL80031A)
  • Overcurrent and short-circuit protection
  • Over-temperature/thermal protection
  • Negative current protection
  • Power-good and enable
  • 100% duty cycle
  • Internal soft-start and soft-stop
  • VIN undervoltage lockout and VOUT overvoltage protection
  • Up to 95% peak efficiency

PARAMETRICS

Parameters
ISL80030
Basic Information
Production Status
量産中
iSimモデル
YES
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)
0.6
出力電圧 (V) (max)
5.5
出力電流 (A) (max)
3
IQ
7 mA
スイッチング周波数 (max) (MHz)
1
スイッチング周波数 (min) (MHz)
1
最大デューティサイクル (%)
100
認定レベル
Standard
ピーク効率 (%)
95
POR
Yes
BOM総フットプリント (mm2)
64
SYNCH機能
No
制御タイプ
Current Mode
スイッチング周波数範囲 (MHz)
1 MHz
CANサンプル
YES
温度範囲
-40 to +125

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