FS72X [FEELING]

Single Digital Output Hall Effect Latch;


型号：	FS72X
厂家：	Feeling Technology
描述：	Single Digital Output Hall Effect Latch
文件：	总10页 (文件大小：134K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

FEELING

TECHNOLOGY

FS72X

FS72XY

Single Digital Output Hall Effect Latch

Features

ꢀ

Maximum output sink current 50mA

Open-drain pre-driver

Power reverse polarity protection

Available in SIP-3L, SOT23(FS72XY) package

Pb Free

General Description

FS72X/FS72XY is a Hall sensor with latched digital output. It’s suitable for electronic commutation of brushless DC

motor applications. The FS72X/FS72XY uses a chopper amplifier for magnetic signal amplification, which can

achieve a low offset and thus precise magnetic switching thresholds.

If a magnetic flux density larger than threshold Bop,NO is turned on(low). The output state is held until a magnetic

flux density reversal falls below Brp causing NO to be turned off (high)

Block Diagram

Bias Generator

Hall Plate

Chopper Amplifier

Oscillator

Sequencer

Digital control logics

Power On Reset

Figure.1

This datasheet contains new product information. Feeling Technology reserves the rights to modify the product specification without notice.

No liability is assumed as a result of the use of this product. No rights under any patent accompany the sales of the product.

Rev1.2 June. 29, 2009

P.1

FEELING

TECHNOLOGY

FS72X

FS72XY

Pin Connection.

Mark

Side

Top

View

VDD VSS NO

FS72XY

FS72X

Figure 2

Pin Descriptions

Name

VDD

VSS

I/O

FS72X

FS72XY

Description

Positive power supply

Ground

Driver output

Legend: I=input, O=output, I/O=input/output, P=power supply, G=ground

Functional Descriptions

Refer to the block diagram (Figure.1), FS72X/FS72XY is composed of the following building blocks:

Bias generator

ꢀ

The bias generator provides precise, temperature- and process-insensitive bias references for the analog blocks.

These references guarantee proper operation of the chip under all conditions specified in this specification.

ꢀ

Oscillator + Sequencer

The built-in oscillator provides the clock signal, which is taken by the sequencer to generate the sequential signals

necessary for both the Hall sensor and the digital control logics

ꢀ

Power on Reset

Used to detect the power-up ramp and reset the digital circuits to attain correct operation as soon as the power is

ready.

ꢀ

Chopper Amplifier

To achieve a higher magnetic sensitivity the chopper amplifier structure is adopted in this design. Use of this

structure dynamically removes both the offset and flicker noise at the same time.

ꢀ

Digital control logics

Generates controlling signals for the Hall sensor.

This datasheet contains new product information. Feeling Technology reserves the rights to modify the product specification without notice.

No liability is assumed as a result of the use of this product. No rights under any patent accompany the sales of the product.

Rev1.2 June. 29, 2009

P.2

FEELING

TECHNOLOGY

FS72X

FS72XY

+12V

Optional for

Electromagnetic sound

FS72X/FS72XY

VDD

GND

Brushless DC Fan

Figure.3

Note

Detail information please check application note.

Suggestion value :R1=1K ohm,R3=330 ohm, R=30 ohm ,C=2.2uF, C1>0.1uF

This datasheet contains new product information. Feeling Technology reserves the rights to modify the product specification without notice.

No liability is assumed as a result of the use of this product. No rights under any patent accompany the sales of the product.

Rev1.2 June. 29, 2009

P.3

FEELING

TECHNOLOGY

FS72X

FS72XY

Absolute Maximum Ratings

Values

Typ.

Parameter

Symbol Conditions

Unit

Min.

-20

-40

2.4

Max.

105

150

Operating Temperature

Storage Temperature

DC Supply Voltage

Supply Current

T_OP

T_ST

℃

V_DD

I_DD

℃

Continuous Current

Junction temperature

Lead Temperature

I_O(CONT)

T_J

150

260

10sec

℃

255 ± 5 ^oC

10 ± 1 sec

150 ± 10 ^oC

90 ± 30 sec

2~5 ^oC /sec

SECOND

Soldering Condition

Figure.4

This datasheet contains new product information. Feeling Technology reserves the rights to modify the product specification without notice.

No liability is assumed as a result of the use of this product. No rights under any patent accompany the sales of the product.

Rev1.2 June. 29, 2009

P.4

FEELING

TECHNOLOGY

FS72X

FS72XY

Recommended Operating Conditions

Values

Typ.

Parameter

Symbol

Unit

Conditions

Min.

Max.

Supply Voltage

Operating Temperature Range

V_DD

T_A

2.4

-20

105

℃

Electrical Characteristics V_DD=12.0V, T_A=25℃ (unless otherwise specified)

Values

Parameter

Symbol

Conditions

Unit

Min.

Typ.

3.0

Max.

Average Supply Current(no load)

Output Saturation Voltage

I_DD

V_SAT

Iout= 50mA

0.5

0.8

V_OUT=12V

Output leakage current

On resistance

I_LEAK

R_ON

µA

Ω

Magnetic Characteristics

Values

Typ.

Parameter

Symbol

Conditions

Unit

Min.

Max.

Operate Points

Release Points

Hysteresis

B_OP

B_RP

+25

-25

B_HYST

Hysteresis Characteristics

Vout

Vsat

B (Magnetic)

-S

+N +N

Magnetic Flux Density in Gauss

Figure.5

This datasheet contains new product information. Feeling Technology reserves the rights to modify the product specification without notice.

No liability is assumed as a result of the use of this product. No rights under any patent accompany the sales of the product.

Rev1.2 June. 29, 2009

P.5

FEELING

TECHNOLOGY

FS72X

FS72XY

Marking Information

SIP-3L:

SOT23:

Lot Number

Year

Mass Production Version

Part

Number: M

Figure.6

This datasheet contains new product information. Feeling Technology reserves the rights to modify the product specification without notice.

No liability is assumed as a result of the use of this product. No rights under any patent accompany the sales of the product.

Rev1.2 June. 29, 2009

P.6

FEELING

TECHNOLOGY

FS72X

FS72XY

Package Dimension (Unit: mm)

SIP-3L(Pb Free)

1.55mm

2.1mm

Sensor Location

(TOP VIEW)

This datasheet contains new product information. Feeling Technology reserves the rights to modify the product specification without notice.

No liability is assumed as a result of the use of this product. No rights under any patent accompany the sales of the product.

Rev1.2 June. 29, 2009

P.7

FEELING

TECHNOLOGY

FS72X

FS72XY

SOT23

Dimension In Millimeters

Symbols

Min

Nom

Max

1.45

0.15

1.30

0.50

0.22

0.90

0.30

0.08

1.15

Sensor location

1.12mm

2.90BSC

2.80BSC

1.60BSC

0.95BSC

1.90BSC

0.45

0.86mm

0.30

0.60

0.60REF

0.25BSC

0.10

0˚

0.25

8˚

4˚

5˚

10˚

15˚

Θ1

This datasheet contains new product information. Feeling Technology reserves the rights to modify the product specification without notice.

No liability is assumed as a result of the use of this product. No rights under any patent accompany the sales of the product.

Rev1.2 June. 29, 2009

P.8

FEELING

TECHNOLOGY

FS72X

FS72XY

PACKING SPECIFICATION (Tapping Reel)

SOT23

PACKING QUANTITY SPECIFICATION

2500ea

1 Reel

4 Reels

1 INSIDE BOX

2 INSIDE BOXes / 1 OUTSIDE BOX

This datasheet contains new product information. Feeling Technology reserves the rights to modify the product specification without notice.

No liability is assumed as a result of the use of this product. No rights under any patent accompany the sales of the product.

Rev1.2 June. 29, 2009

P.9

FEELING

TECHNOLOGY

FS72X

FS72XY

Order Information

Part Number

FS72X-LF

Operating Temperature

Package

MOQ

Marking

SIP-3L

1000ea

-20

℃

to +105

℃

FS72XY-LF

SOT23

2500ea/Reel

Mxxxx

This datasheet contains new product information. Feeling Technology reserves the rights to modify the product specification without notice.

No liability is assumed as a result of the use of this product. No rights under any patent accompany the sales of the product.

Rev1.2 June. 29, 2009

P.10

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