MIC5016/5017

Micrel

5-146

October 1998

Features

• 2.75V to 30V operation

• 100

µA maximum supply current (5V supply)

•15

µA typical off-state current

• Internal charge pump

• TTL compatible input

• Withstands 60V transient (load dump)

• Reverse battery protected to –20V

• Inductive spike protected to –20V

• Overvoltage shutdown at 35V

• Internal 15V gate protection

• Minimum external parts

• Operates in high-side or low-side configurations

•1

µA control input pull-off

• Inverting and noninverting versions

Applications

• Automotive electrical load control

• Battery-powered computer power management

• Lamp control

• Heater control

• Motor control

• Power bus switching

Ordering Information

Part Number

Temperature Range

Package

Noninverting

MIC5016BWM

–40

°C to +85°C

16-pin Wide SOIC

MIC5016BN

–40

°C to +85°C

14-pin Plastic DIP

Inverting

MIC5017BWM

–40

°C to +85°C

16-pin Wide SOIC

MIC5017BN

–40

°C to +85°C

14-pin Plastic DIP

MIC5016/5017

Low-Cost Dual High- or Low-Side MOSFET Driver

Typical Application

Figure 1: 3-Volt “Sleep-Mode” Switches

with Logic-Level MOSFETs

OFF

ON

MIC5016BN

IRLZ24

+3V to +4V

Gate A

Source B

Gnd

In A

V+ B

V+ A

Source A

Gate B

10µF

In B

Back

Light

IRLZ24

OFF

ON

General Description

MIC5016 and MIC5017 dual MOSFET drivers are designed

for gate control of N-channel, enhancement-mode, power

MOSFETs used as high-side or low-side switches.

The

MIC5016/7 can sustain an on-state output indefinitely.

The MIC5016/7 operates from a 2.75V to 30V supply. In high-

side configurations, the driver can control MOSFETs that

switch loads of up to 30V. In low-side configurations, with

separate supplies, the maximum switched voltage is limited

only by the MOSFET.

The MIC5016/7 has two TTL compatible control inputs. The

MIC5016 is noninverting while the MIC5017 is inverting.

The MIC5016/7 features internal charge pumps that can

sustain gate voltages greater than the available supply

voltage.

The driver is capable of turning on logic-level

MOSFETs from a 2.75V supply or standard MOSFETs from

a 5V supply. Gate-to-source output voltages are internally

limited to approximately 15V.

The MIC5016/7 is protected against automotive load dump,

reversed battery, and inductive load spikes of –20V. The

driver’s overvoltage shutdown feature turns off the external

MOSFETs at approximately 35V to protect the load against

power supply excursions.

The MIC5016 is an improved pin-for-pin compatible replace-

ment in many MIC5012 applications.

The MIC5016/7 is available in plastic 14-pin DIP and 16-pin

SOIC pacakges.