ATS278-PL-A ANACHIP [Anachip Corp], ATS278-PL-A Datasheet

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ATS278-PL-A

Manufacturer Part Number
ATS278-PL-A
Description
Two Phase Hall Effect Latch With FG Output
Manufacturer
ANACHIP [Anachip Corp]
Datasheet
- On-chip Hall plate
- Operating voltage: 3.5V~20V
- Internal bandgap regulator allows temperature
- High output sinking capability up to 400mA for
- Built-in protection diode only for chip reverse
- Frequency Generation (FG) output
- Package: SIP-5L
- Dual-coil Brush-less DC Motor
- Dual-coil Brush-less DC Fan
- Revolution Counting
- Speed Measurement
This datasheet contains new product information. Anachip Corp. 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 sale of the product.
Two Phase Hall Effect Latch With FG Output
compensated operations and a wide operating
voltage range
driving large load
power connecting
Features
Ordering Information
Typical Application Circuit
Applications
5V/12V
Speed
R1 = R2 = 47Ω
C1 = C2 = 2.2 F
The R, C value need to be fine tuned
base on coils design.
*Packing: Bulk
Blank or
A~Z : if necessary
Wafer Body
5V/12V DC Brush-less Fan with FG output function
to specify
C1
+
μ
P: SIP-5L
Package
R
pu
ATS278 X - X X - X
1/6
1
L : Lead Free
ATS278 is an integrated Hall sensor with two output
drivers and rotor speed output, typically designed
for electronic commutation of two-phase brush-less
DC fan applications.
On-chip Hall sensor will generate Hall voltage due
to magnetics sensing. The amplifier will amplify the
Hall voltage. The Schmitt trigger determines
switching hysteresis and then control internal
driver’s on/off to sink load current. Meanwhile, An
internal bandgap regulator is used to provide stable
bais due to temperature-compensation. FG pin will
provide switching frequency of driver. Major feature
is to minimize the external components by
building-in FG output transistor.
If a magnetic flux density larger than threshold Bop,
DO is turned on (low) and DOB is turned off (high).
The output state is held until a magnetic flux density
reversal falls below Brp causing DO to be turned off
and DOB turned on.
2
Lead
278
3
General Description
4
5
Characteristics
Coil1
Magnetic
C1
R1
A or B
Coil2
R2
C2
ATS278
Rev. 1.0 Oct 4, 2005

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ATS278-PL-A Summary of contents

Page 1

... This datasheet contains new product information. Anachip Corp. 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 sale of the product. General Description ATS278 is an integrated Hall sensor with two output drivers and rotor speed output, typically designed for electronic commutation of two-phase brush-less DC fan applications ...

Page 2

... Anachip Corp. www.anachip.com.tw Comparators Amp Front View ) 278 VCC DOB 5 : GND P/I/O Pin # Description O 1 Frequency detection output P 2 Positive power input O 3 Driver Output O 4 Driver Output ( Inverting ) P 5 Ground 2/6 ATS278 DOB 5 GND Rev. 1.0 Oct 4, 2005 ...

Page 3

... CL=20pF (Test Circuit) V Vcc=14V, IL= 278 DOB Test circuit ) 3/6 ATS278 Values Unit 20 V -20 V Unlimited 0.4 0 °C -20~+85 °C -65~+150 550 mW Min Typ Max Unit 3.5 ---- 20 V ---- 300 800 ---- 10 µ ...

Page 4

... Min - HYS Symbol Min - HYS OFF OFF OP RP Vsat Vsat 100 200 -200 Magnetic Flux Density in Gauss 4/6 ATS278 (1mT=10 Gauss) Typ. Max. Unit - 60 Gauss - -10 Gauss 75 - Gauss Typ. Max. Unit - 80 Gauss - -5 Gauss 75 - Gauss ...

Page 5

... Rotatory Locked Rotatory ( Front View ) 278 Wafer Lot ID: L & a~z is lead-free products Code: A~Z Nth week: 01~52 Year: "1" = 2001 "2" = 2002 5/6 ATS278 100 264 242 220 135 140 150 125 150 Ta (。C) Locked ...

Page 6

... REF [0.165 REF] 2 ± 0.48 0.1 ± [0.019 0.003] ± 0.41 0.03 ± [0.016 0.001] ± 0.03 ± 0.001] 2.006 mm [0.079 inch] ( Top View 6/6 ATS278 ± 0.1 ± 0.003] ± 0.73 0.1 ± [0.029 0.003] ° ° ° ° ± 0.38 0.03 ± [0.015 0.001] Rev. 1.0 Oct 4, 2005 ...

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