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Eight Low-Side Drivers With Internal Clamp

for Inductive Loads and Current Limiting for

Self Protection

鈥?Seven Outputs Rated at 150 mA and

Controlled Through Serial Interface

鈥?One Output Rated at 150 mA and

Controlled Through Serial Interface and

Dedicated Enable Pin

5-V

鹵5%

Regulated Power Supply With

200-mA Load Capability at V

IN

Max of 18 V

Internal Voltage Supervisory for Regulated

Output

Serial Communications for Control of Eight

Low-Side Drivers

Enable/Disable Input for OUT1

5-V or 3.3-V I/O Tolerant for Interface to

Microcontroller

Programmable Power-On Reset Delay Before

RST Asserted High, Once 5 V Is Within

Specified Range (6 ms Typ)

Programmable Deglitch Timer Before RST Is

Asserted Low (40

碌s

Typ)

Zero-Voltage Detection Signal With Built-In

Filter of 20

碌s

Thermal Shutdown for Self Protection

APPLICATIONS

鈥?/div>

Electrical Appliances

鈥?Air Conditioning Units

鈥?Ranges

鈥?Dishwashers

鈥?Refrigerators

鈥?Microwaves

鈥?Washing Machines

General-Purpose Interface Circuits, Allowing

Microcontroller Interface to Relays, Electric

Motors, LEDs, and Buzzers

N OR PWP PACKAGE

(TOP VIEW)

鈥?/div>

ZVS

OUT1

OUT2

OUT3

OUT4

OUT5

OUT6

OUT7

OUT8

GND

1

2

3

4

5

6

7

8

9

10

20

19

18

17

16

15

14

13

12

11

SYN

V

IN

5V

OUT

SCLK

NCS

MOSI

RST

R

DELAY

EN1

GND

DESCRIPTION/ORDERING INFORMATION

The power supply provides regulated 5-V output to power the system microcontroller and drive eight low-side

switches. The AC zero-detect circuitry is monitoring the crossover voltage of the mains AC supply. The resultant

signal is a low-frequency clock output on the ZVS terminal, based on the AC-line cycle. This information allows

the microcontroller to reduce in-rush current by powering loads on the AC-line peak voltage.

A serial communications interface controls the eight low-side outputs; each output has an internal snubber circuit

to absorb the energy in the inductor at turn OFF. Alternatively, the system can use a fly-back diode to V

IN

to help

recirculate the energy in an inductive load at turn OFF.

ORDERING INFORMATION

T

A

PDIP 鈥?N

鈥?0擄C to 125擄C

PowerPAD鈩?鈥?PWP

PACKAGE

Tube of 20

Reel of 2000

Tube of 70

ORDERABLE PART NUMBER

TPL9201N

TPL9201PWPR

TPL9201PWP

TOP-SIDE MARKING

TPL9201

IC9201

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PowerPAD is a trademark of Texas Instruments.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

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