US661EDC datasheet(4/12 Pages) MELEXIS

Part #	US661EDC

Description	Two-Coil Low Noise Fan Driver

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Manufacturer	MELEXIS [Melexis Microelectronic Systems]

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4 / 12 page

US651 / US661

Two-Coil Low Noise Fan Driver

390109020902

Page 4 of 12

Preliminary Datasheet

Rev 002

Mar/07

6 General Electrical Specifications

DC Operating Parameters TJ = 25

oC, V

DD = 12V (unless otherwise specified)

Parameter.

Symbol

Test Conditions

Min

Typ

Max

Units

Supply Voltage

VDD

Operating

3

12

18

V

Supply Current

IDD

3

5

mA

OUT1, OUT2 ON Resistance

RDSON 1,2

3

5

Ω

OUT1, OUT2 Clamp Voltage

VOUT 1,2

36

V

FG / RD Output Low Voltage

VOL

IOL = 4mA

0.35

0.5

V

FG / RD Output Clamp Voltage

VCLMP

18

V

FG / RD Output Leakage Current

ILEAK

VFG (VRD) = 5V

10

A

FG / RD Output Current Limit

IFGLIM

VFG (VRD) = 12V

20

mA

Output Switching Slope Duration (1)

TSW

VDD = 12V,

pin SLOPE left open

40

70

160

s

Output Switching Slope Duration (1)

TSW

VDD = 12V,

RSLOPE =100k

87

120

189

s

Output Switching Slope Duration (1)

TSW

VDD = 5V,

pin SLOPE left open

73

126

250

s

Output Switching Slope Duration (1)

TSW

VDD = 5V,

RSLOPE =100k

87

120

189

s

Locked Rotor Period

TON

VDD = 12V

0.24

0.29

0.39

s

Locked Rotor Period

TOFF

VDD = 12V

1.44

1.5

2.34

s

Locked Rotor Period

TON

VDD = 5V

0.48

0.6

0.89

s

Locked Rotor Period

TOFF

VDD = 5V

2.88

3.65

5.34

s

Thermal Protection Shutdown

TSD

Note 2

160

o

C

Thermal Protection Release

TREL

Note 2

130

o

C

DC Package Thermal Resistance

RTH

Single layer PCB

150

o

C/Watt

Table 3: Electrical specifications

Note 1: Measured with active load connected to the output, from 10% to 90% of the VDD voltage.

Note 2: Guarantied by design

7 Magnetic Specifications

DC Operating Parameters TJ = 25

oC, V

DD = 12V (unless otherwise specified)

Parameter.

Symbol

Test Conditions

Min

Typ

Max

Units

Operate point

BOP

3

6

mT

Release point

BRP

-6

-3

mT

Hysteresis

BHYST

2

6

mT

Table 4: Magnetic specifications

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