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AH291W-YL

更新时间：2024-09-18 05:39:53
品牌：ANACHIP
描述：Low Voltage Hall-Effect Smart Fan Motor Controller

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AH291W-YL 概述

Low Voltage Hall-Effect Smart Fan Motor Controller 低电压霍尔效应智能风扇电机控制器

AH291W-YL 数据手册

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AH266  
High Voltage Hall Effect Latch  
„ Features  
„ General Description  
- On-chip Hall plate  
AH266 is an integrated Hall sensor with output  
drivers designed for electronic commutation of  
brush-less DC motor applications. The device  
includes an on-chip Hall voltage generator for  
magnetic sensing, a comparator that amplifies the  
Hall voltage, and a Schmitt trigger to provide  
switching hysteresis for noise rejection, and  
complementary darlington open-collector drivers for  
sinking large current loads. An internal bandgap  
regulator is used to provide temperature  
compensated supply voltage for internal circuits and  
allows a wide operating supply range.  
- Operating voltage: 4V~28V  
- Output current: 400mA(Continuous, 25oC)  
- Reverse protection diode only for chip reverse  
(Note)  
power connecting  
- Output protection Zener breakdown Vz=62V(Typ)  
- Package: SIP-4L  
(Note)  
Protection diode only exists at power pin(1,4) output, not  
including pin (2,3).  
If a magnetic flux density (B) is larger than operate  
point (Bop), DO turn on (low) and DOB turn off  
(high). The outputs state is latched prior to reach  
release point (Brp). if B< Brp, DO turn off and DOB  
turn on. AH266 is rated for operation over  
temperature range from -20oC to 85 oC and voltage  
range from 4V to 28V. The devices are available in  
low cost die forms or rugged 4 pin SIP packages.  
„ Application  
- Dual-coil Brush-less DC Motor  
- Dual-coil Brush-less DC Fan  
- Revolution Counting  
- Speed Measurement  
„ Pin Assignment  
„ Pin Configuration  
4. GND  
3. DOB  
2. DO  
Name  
Description  
VCC  
DO  
Positive Power Supply  
Output Pin  
1. VCC  
DOB  
GND  
Output Pin  
Ground  
„ Ordering Information  
AH266 X - X X X - X  
Magnetic  
Packing  
Blank : Tube  
Wafer Body  
Package  
P: SIP-4L  
Lead  
Characteristics  
Blank or  
L : Lead Free  
Blank: Normal  
A or B  
A~Z : if necessary  
to specify  
A
: Taping  
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.  
Rev. 0.2 Jan 19, 2005  
1/6  
AH266  
High Voltage Hall Effect Latch  
„ Block Diagram  
VCC  
1
DO  
REG.  
Hall  
Plate  
Amp  
DOB  
„ Typical Application Circuit  
266  
coil1  
coil2  
1
2
3
4
Vcc  
Brush-less DC Fan  
Note: This application circuit can’t protect reverse coil current if power is connecting reverse.  
Anachip Corp.  
www.anachip.com.tw  
2/6  
Rev 0.2 Jan 19, 2005  
AH266  
High Voltage Hall Effect Latch  
„ Absolute Maximum Ratings (at Ta = 250C )  
Parameter  
Symbol  
Rating  
Unit  
Supply voltage  
VCC  
Vout (off)  
Io (con)  
Io (hold)  
Io (peak)  
B
28  
28  
V
V
Output “OFF ” voltage  
400 (Note 1)  
500  
mA  
mA  
mA  
Gauss  
°C  
Output “ON” current  
700  
Magnetic flux density  
Unlimited  
-20~+85  
-65~+150  
550  
Operating temperature range  
Storage temperature range  
Power dissipation (Note 2)  
Thermal Resistance  
Top  
Tstg  
°C  
PD  
mW  
°C/W  
θjc  
227  
Note 1: Io(con) is 150 mA at 85°C  
2: See Performance Characteristic for other conditions  
„ Electrical Characteristics ( Ta = 25°C )  
Characteristic  
Supply Voltage  
Symbol  
Conditions  
Min  
Typ  
－
Max  
Unit  
－
Vcc  
Vz  
4
28  
70  
1.5  
10  
10  
5
V
V
V
µA  
mA  
µs  
µs  
µs  
Output Zener Breakdown  
Output Saturation Voltage  
Output Leakage Current  
Supply Current  
Output Turn off  
54  
－
－
－
－
－
－
62  
Vce(sat) Vcc=24V, Ic=400mA  
1.1  
< 0.1  
5
Icex  
Icc  
tr  
tf  
∆t  
Vce=24V, Vcc=24V  
Vcc=24V, Output Open  
Vcc=24V, RL=820Ω, CL=20pF  
Vcc=24V, RL=820Ω, CL=20pF  
Vcc=24V, RL=820Ω, CL=20pF  
Output Rise Time  
1.0  
1.0  
3.0  
Output Falling Time  
1.5  
10  
Switch Time Differential  
„ Test Circuit  
24V  
266  
Vout1(DO)  
RL1  
RL2  
Vout2(DOB)  
CL2  
CL1  
RL1=RL2=820 Ohm  
CL1=CL2=20 pF  
Anachip Corp.  
www.anachip.com.tw  
Rev 0.2 Jan 19, 2005  
3/6  
AH266  
High Voltage Hall Effect Latch  
„ Magnetic Characteristics (Ta=+25oC)  
(1mT = 10 Gauss)  
A grade  
Characteristic  
Symbol  
Min.  
Typ.  
Max.  
Unit  
Operate Point  
Bop  
Brp  
Bhy  
10  
-70  
-
-
-
80  
70  
-10  
-
Gauss  
Gauss  
Gauss  
Release Point  
Hysteresis  
B grade  
Characteristic  
Symbol  
Min.  
Typ.  
Max.  
Unit  
Operate Point  
Release Point  
Hysteresis  
Bop  
Brp  
Bhy  
-
-100  
-
-
-
80  
100  
-
-
Gauss  
Gauss  
Gauss  
DOB  
DO  
Turn on  
Bhy  
Turn off  
Turn off  
Bhy  
Turn on  
Vsat  
Vsat  
Brp  
Bop  
Brp  
Bop  
0
0
Magnetic Flux Density in Gauss  
Magnetic Flux Density in Gauss  
„ Performance Characteristics (SIP-4L)  
25  
50  
60  
70  
80  
85  
286  
130  
88  
90  
264  
135  
66  
95  
242  
140  
44  
100  
220  
150  
0
Ta (°C)  
Pd (mW)  
Ta (°C)  
550  
105  
198  
440  
110  
176  
396  
115  
154  
352  
120  
132  
308  
125  
110  
Pd (mW)  
Power Dissipation Curve  
Pd (mW)  
600  
500  
400  
300  
200  
100  
0
0
15  
30  
45  
60  
75  
90  
105  
120  
135  
150  
85  
Ta (。C)  
Anachip Corp.  
www.anachip.com.tw  
Rev 0.2 Jan 19, 2005  
4/6  
AH266  
High Voltage Hall Effect Latch  
„ Operation Characteristics  
DO  
V
cc  
S
V
d
High  
Marking side  
B
hy  
Low  
N
V
sat  
B
rp  
B
op  
( SIP4 )  
0
S
N
( Magnetic flux density )  
„ Marking Information  
( Front View )  
Blank: normal  
Part Number  
266  
L: Lead Free Package  
X XX X X  
ID Code: A ~ Z  
Nth week: 01~52  
Year: "1" = 2001  
"2" = 2002  
Anachip Corp.  
www.anachip.com.tw  
Rev 0.2 Jan 19, 2005  
5/6  
AH266  
High Voltage Hall Effect Latch  
„ Package Information  
Active Area Depth  
Package Sensor Location  
Marking side  
1.971mm  
1.046mm  
1
2
3
4
0.7mm  
Package Dimension  
5o  
o
-7  
14.25mm  
+/-1.25mm  
1.55mm  
+/-0.1mm  
0.38mm  
3o-5o  
1.03mm  
+/-0.1  
+/-0.03mm  
3.65mm  
+/-0.1mm  
0.30mm  
+/-0.1mm  
0.41mm  
0.46mm  
+/-0.03mm  
+/-0.03mm  
o
5o  
3o-5o  
-7  
1.27mm  
+/-0.03mm  
0.2mm Max.  
1.42mm+/-0.1mm  
Anachip Corp.  
www.anachip.com.tw  
Rev 0.2 Jan 19, 2005  
6/6  

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