2-1

HIP1020

Single, Double or Triple-Output Hot Plug

Controller

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 . . . . . . . . . . . . . . . . . . . . . . . . . . < 1

µA

• Operating Current. . . . . . . . . . . . . . . . . . . . . . . . . . < 3mA

Applications

• Device Bay Peripherals

• Hot Plug Control

• Power Distribution Control

Pinout

HIP1020 (SOT23)

TOP VIEW

Ordering Information

PART

NUMBER

TEMP.

PACKAGE

PKG.

NO.

HIP1020CK-T

0 to 70

5 Ld SOT23 Tape

and Reel

P5.064

4

5

3

2

1

VCC

GND

LGATE

EN

HGATE

Typical Applications

FIGURE 1A. DEVICE-BAY HOT PLUG CONTROLLER WITH

VCC = 12V

FIGURE 1B. DEVICE-BAY HOT PLUG CONTROLLER WITH

VCC = 5V

1

2

34

5

C1

CHARGE

PUMP

HIP1020

ENABLE

OPTIONAL

1

2

34

5

C1

CHARGE

PUMP

HIP1020

ENABLE

OPTIONAL

Data Sheet

August 1999

File Number

4601.1

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

1-888-INTERSIL or 321-724-7143