Overview

Description

The HIP1020 applies a linear voltage ramp to the gates of any combination of 3. 3V, 5V, and 12V MOSFETs. The internal charge pump doubles a 12V bias or triples a 5V bias to deliver the high-side drive capability required when using more cost-effective N-Channel MOSFETs. The 5V/ms ramp rate is controlled internally and is the proper value to turn on most devices within the Device-Bay-specified di/dt limit. If a slower rate is required, the internally-determined ramp rate can be over ridden using an optional external capacitor. When VCC = 12V, the charge pump ramps the voltage on HGATE from zero to 22V in about 4ms. This allows either a standard or a logic-level MOSFET to become fully enhanced when used as a high-side switch for 12V power control. The voltage on LGATE ramps from zero to 16V allowing the simultaneous control of 3. 3V and/or 5V MOSFETs. When VCC = 5V, the charge pump enters voltage-tripler mode. The voltage on HGATE ramps from zero to 12. 5V in about 3ms while LGATE ramps to 12. 0V. This mode is ideal for control of high-side MOSFET switches used in 3. 3V and 5V power switching when 12V bias is not available.

Features

  • Rise Time Controlled to Device-Bay Specifications
  • No Additional Components Required
  • Internal Charge Pump Drives N-Channel MOSFETs
  • Drives any Combination of One, Two or Three Outputs
  • Internally-Controlled Turn-On Ramp
  • Optional Capacitor Selects Slower Rates
  • Prevents False Turn on During Hot Insertion
  • Operates using 12V or 5V Bias
  • Improves Device Bay Peripheral Size Cost and Complexity
  • Minimal Component Count
  • Tiny 5-Pin SOT23 Package
  • Controls Standard and Logic-Level MOSFETs
  • Compatible with TTL and 3.3V Logic Devices
  • Shutdown Current <1µA
  • Operating Current <3mA

Comparison

Applications

Applications

  • Device Bay Peripherals
  • Hot Plug Control
  • Power Distribution Control

Documentation

Type Title Date
Datasheet PDF 396 KB
Price Increase Notice PDF 208 KB
White Paper PDF 295 KB
Application Note PDF 410 KB
Other PDF 2.20 MB
Application Note PDF 509 KB
Application Note PDF 397 KB
7 items

Design & Development

Models