ISL8104

Synchronous Buck Pulse-Width Modulator (PWM) Controller

Product Status: Mass Production

OVERVIEW

The ISL8104 is a 8V to 14V synchronous PWM controller with integrated MOSFET drivers. The controller features the ability to safely start-up into prebiased output loads and provides protection against overcurrent fault events. Overcurrent protection is implemented using top-side MOSFET rDS(ON) sensing, eliminating the need for a current sensing resistor.

The ISL8104 employs voltage-mode control with dual-edge modulation to achieve fast transient response. The operating frequency is adjustable from 50kHz to 1.5MHz with full (0% to 100%) PWM duty cycle capability. The error amplifier features a 15MHz (typ) gain-bandwidth product and 6V/µs slew rate enabling high converter bandwidth.

The output voltage of the converter can be regulated to as low as 0.597V with a tolerance of ±1.0% over the commercial temperature range (0°C to +70°C), and ±1.5% over industrial temperature range (-40°C to +85°C). Provided in the QFN package, a SS pin and REFIN pin enable supply sequencing and voltage tracking functionality.

KEY FEATURES

  • +8V ±5% to +14V ±10% Bias Voltage Range
  • 1.5V to 15.4V Input Voltage Range
  • 0.597V Internal Reference Voltage
  • ±1.0% Over the Commercial Temperature Range
  • ±1.5% Over the Industrial Temperature Range
  • Voltage-Mode PWM Control with Dual-Edge Modulation
  • 14V High Speed N-Channel MOSFET Gate Drivers
  • 2.0A Source/3A Sink at 14V Bottom-Side Gate Drive
  • 1.25A Source/2A Sink at 14V Top-Side Gate Drive
  • Fast Transient Response
  • 15MHz (typ) Gain-Bandwidth Error Amplifier with 6V/µs slew rate
  • Full 0% to 100% Duty Cycle Support
  • Programmable Operating Frequency from 50kHz to 1.5MHz
  • Lossless Programmable Overcurrent Protection
  • Top-Side MOSFET's rDS(ON) Sensing
  • ~120ns Blanking Time
  • Sourcing and Sinking Current Capability
  • Support for Start-Up into Prebiased Loads
  • Soft-Start Done and an External Reference Pin for Tracking Applications are Available in the QFN Package
  • Pb-free available (RoHS compliant)

BLOCK DIAGRAM

 Block Diagram

PARAMETRICS

Parameters
ISL8104
Basic Information
生产状态
Mass Production
iSim模型
YES
输入电压最小值 (V)
1.2
输入电压最大值 (V)
12
输出电压最小值 (V)
0.6
输出电压最大值 (V)
5
输出电流最大值 (A)
30
VBIAS (最小值)
7.6 V
VBIAS (最大值) (V)
15.4
IS (典型值)
51 mA
资质级别
Standard
偏置电压范围 (V)
7.6 to 15.4
CAN 采样
YES
温度范围
-40 to +85

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