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STMicroelectronics Electronic Components Datasheet

PM8834 Datasheet

4A dual low side MOSFET driver

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PM8834 pdf
PM8834
4 A dual low side MOSFET driver
Features
Dual independent low side MOSFET driver
with 4 A sink and source capability
Independent enable for each driver
Driver output parallel ability to support higher
driving capability
Matched propagation delays
CMOS/TTL compatible input levels
Wide input supply voltage range: 5 V to 18 V
Embedded driver anti-shoot-through protection
Low bias switching current
Short propagation delays
Wide operative temperature range:
-40 °C to 105 °C
S08 and VFDFPN8 3x3 mm package
Applications
Switch mode power supplies
DC/DC converters
Motor controllers
Line drivers
Class D switching amplifiers
SO8
VFDFPN8
Description
PM8834 is a flexible, high-frequency dual low-
side driver specifically designed to work with high
capacitive MOSFETs and IGBTs.
Both PM8834 outputs can sink and source 4 A
independently. Higher driving current can be
obtained by putting in parallel the two PWM
output.
PM8834 provides two enable pins which can be
used to enable the operation of one or both of the
output lines.
PM8834 works with CMOS/TTL compatible PWM
signal.
The driver is available in SO8 (PM8834) and
VFDFPN8 3x3 mm (PM8834Q) packages.
Table 1. Device summary
Order codes
Temp range, °C
PM8834
PM8834TR
PM8834Q
-40 - 105
PM8834QTR
Package
SO8
VFDFPN8
October 2008
Rev 1
Packing
Tube
Tape and reel
Tube
Tape and reel
1/18
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1


STMicroelectronics Electronic Components Datasheet

PM8834 Datasheet

4A dual low side MOSFET driver

No Preview Available !

PM8834 pdf
Contents
Contents
PM8834Q
1 Typical application circuit and block diagram . . . . . . . . . . . . . . . . . . . . 3
1.1 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 Pin description and connection diagram . . . . . . . . . . . . . . . . . . . . . . . . 4
2.1 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.2 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3 Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3.1 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3.2 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4 Device description and operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
4.1 Input stage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
4.1.1 PWM inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
4.1.2 Enable pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4.2 Output stage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4.3 Parallel output operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4.4 Gate driver voltage flexibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
5 Design guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
5.1 Output series resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
5.2 Power dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
5.3 Layout guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
6 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
7 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
2/18


Part Number PM8834
Description 4A dual low side MOSFET driver
Maker STMicroelectronics
Total Page 18 Pages
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