ISL85009

9A, 3.8V to 18V Input, Synchronous Buck Regulator

OVERVIEW

The ISL85009 is a highly efficient, monolithic, synchronous buck regulator that can deliver 9A of continuous output current from a 3.8V to 18V input supply. The device uses current mode control architecture with a fast transient response and excellent loop stability.

The ISL85009 integrates very low ON-resistance high-side and low-side FETs to maximize efficiency and minimize external component count. The minimum BOM and easy layout footprint are extremely friendly to space constraint systems.

The operation frequency of this device can be set using the FREQ pin: 600kHz (FREQ = float) and 300kHz (FREQ = GND). The device can also be synchronized to an external clock up to 1MHz.

Both high-side and low-side MOSFET current limit along with reverse current limit, fully protect the regulator in an overcurrent event. Selectable OCP schemes can fit various applications. Other protections, such as input/output overvoltage and over-temperature, are also integrated into the device which give required system level safety in the event of fault conditions.

The ISL85009 is offered in a space saving 15 Ld 3.5mmx3.5mm Pb-free TQFN package with great thermal performance and 0.8mm maximum height.

KEY FEATURES

  • Power input voltage range variable 3.8V to 18V
  • PWM output voltage adjustable from 0.6V
  • Up to 9A output load
  • Prebias start-up, fixed 3ms soft-start
  • Selectable fSW of 300kHz, 600kHz, and external synchronization up to 1MHz
  • Peak current mode control
  • DCM/CCM
  • Thermally compensated current limit
  • Internal/external compensation
  • Open-drain PG window comparator
  • Output overvoltage and thermal protection
  • Input overvoltage protection
  • Integrated boot diode with undervoltage detection
  • Selectable OCP schemes
  • Hiccup OCP
  • Latch-off
  • Compact size 3.5mmx3.5mm, 15 Ld TQFN

PARAMETRICS

Parameters
ISL85009
Basic Information
Production Status
量産中
トポロジ
Buck
出力数
1
入力電圧 (V) (min)
3.8
入力電圧 (V) (max)
18
出力電圧 (V) (min)
0.6
出力電圧 (V) (max)
5
出力電流 (A) (max)
9
IQ
3 mA
スイッチング周波数 (max) (MHz)
0.6
スイッチング周波数 (min) (MHz)
0.3
最大デューティサイクル (%)
100
認定レベル
Standard
ピーク効率 (%)
97
POR
Yes
SYNCH機能
Yes
制御タイプ
Current Mode
スイッチング周波数範囲 (MHz)
300 to 600KHz
温度範囲
-40 to +125

ブロック図

上記downloadには必ず下のボタンより契約内容を御確認ください。

MyRenesasボタンよりID,PWをご入力ください。