THMC45_13 datasheet(4/15 Pages) TI1

Part #	THMC45

Description	5-V AND 3.3-V DC BRUSHLESS FAN MOTOR DRIVER WITH SINGLE WIRE CONTROL

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Manufacturer	TI1 [Texas Instruments]

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THMC45

5V AND 3.3V DC BRUSHLESS FAN MOTOR DRIVER

WITH SINGLE WIRE CONTROL

SLIS101A − MAY 2001

4

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

dc electrical characteristics, VPWR = 5V, TA = −30°C to 80°C (unless otherwise noted)

supply current

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

V

Supply voltage normal operation

4.5

5

5.5

VPWR

Supply voltage functional with derated

performance

2.4

4.5

V

VPOR

Power-on reset voltage threshold

Increase

VPWR until logic active

1.5

V

IVPWR VPWR supply current

IL = 0 A

0.5

1.5

mA

IVPWR VPWR supply current

Idle condition, in locked rotor detect

0.5

1.5

mA

IREV

Reverse leakage

VPWR = −5 V at TA = 25°C

5

mA

ISLEEP Sleep-state current

VPWM = 0 V for >2 ms

75

300

µA

Hall sensor signal conditioning

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

IIB(HL)

Input bias current

See Note 5

−1

1

µA

VICR(HL)

ICR(HL) common mode input voltage range

1

3.5

V

VIO

Hall amplifier input offset voltage

−20

0

20

mV

NOTE 5: Design target only. Not tested in production.

OUTA, OUTB phase winding driver outputs

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

ILEAK

OUTA, OUTB output leakage current

VPWM = 0 V for >2 ms,

sleep state,

VOUTx = 5 V

−1

1

µA

RDSON(Low)

OUTA, OUTB low-side output ON

resistance

IOUTx = 200 mA,

TA = 25°C

1.6

2.5

Ω

RDSON(High)

OUTA, OUTB high-side output ON

resistance

IOUTx = −200 mA,

TA = 25°C

1.9

2.5

Ω

RDSON

OUTA, OUTB low-side output ON

resistance

IOUTx = 100 mA,

VPWR = 2.4 V

TA = 25°C,

3

6

Ω

RDSON

OUTA, OUTB high-side output ON

resistance

IOUTx = −100 mA,

VPWR = 2.4 V

TA = 25°C,

3.5

6

Ω

PWM input/TACH pulse output

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

VIH

PWM high-level input voltage

2

V

VIL

PWM low-level input voltage

0.8

V

IIH

PWM high-level input current

VPWM = 5 V

−1

1

µA

IIL

PWM low-level input current

VPWM = 0 V

75

200

µA

VOL

PWM input tachometer pulse output low voltage

IPWM = 2 mA

0.4

V

TACH open-drain output

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

IIH

TACH output high leakage

VTACH = VPWR

−1

1

µA

VOL

TACH output low voltage

ITACH = 5 mA

400

mV

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