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PM8841D Datasheet

1A low-side gate driver

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PM8841
SOT23-5
Features
Low-side MOSFET driver
1 A sink and 0.8 A source capability
External reference for input threshold
Wide supply voltage range (10 V ÷ 18 V)
Input and output pull-down resistors
Short propagation delays
Input and output UVLO
Wide operating temperature range: -40 °C to
125 °C
SOT23-5 package
Applications
SMPS
Digital lighting
Wireless battery chargers
Digitally controlled MOSFETs
1 A low-side gate driver
Datasheet - production data
Description
The PM8841 is a high frequency single channel
low-side MOSFET driver specifically designed to
work with digital power conversion
microcontrollers, such as the STMicroelectronics
STLUX™ family of products.
The PM8841 output can sink 1 A and source 0.8
A.
The input levels of the driver are derived by the
voltage present at the IN_TH pin (between 2 V
and 5.5 V). This pin is typically connected at the
same voltage of the microcontroller supply
voltage.
The PM8841 device includes both input and
output pull-down resistors.
UVLO circuitry for input and output stages is
present preventing the IC from driving the
external MOSFET in unsafe condition.
Table 1. Device summary
Order code
Package
PM8841D
SOT23-5
November 2018
This is information on a product in full production.
DocID027119 Rev 2
1/15
www.st.com


STMicroelectronics Electronic Components Datasheet

PM8841D Datasheet

1A low-side gate driver

No Preview Available !

Contents
Contents
PM8841
1
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2
Pin connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3
Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
5
Typical applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
6
Application guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
6.1 Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
6.2 Layout suggestions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
6.3 Driving switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
6.4 Power dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
7
Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
7.1 SOT23-5 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
8
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2/15
DocID027119 Rev 2


Part Number PM8841D
Description 1A low-side gate driver
Maker STMicroelectronics
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PM8841D Datasheet PDF






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