AH276Q 
Document number: DS31066 Rev. 6 - 2 
1 of 6 
www.diodes.com  
September 2013
?Diodes Incorporated 
H276Q
COMPLEMENTARY OUTPUT HALL EFFECT LATCH 
 
Description 
AH276  are  integrated  Hall  sensors  with  output  drivers,  mainly 
designed for electronic commutation of brush-less DC Fan. This IC 
internally includes the regulator, protecting diode, Hall plate, amplifier, 
comparator, and a pair of complementary open-collector outputs (DO, 
DOB). 
 
While the magnetic flux density (B) is larger than operate point (Bop), 
DO will turn on (low), and meanwhile DOB will turn off (high). Each 
output is latched until B is lower than release point (Brp), and then 
DO, DOB transfer each state. 
 
For  DC  fan  application,  sometimes  need  to  test  power  reverse 
connection condition. Internal diode only protects chip-side but not for 
coil-side. If necessary, add one external diode to block the reverse 
current from coil-side. 
 
Features 
?    On-chip Hall sensor with two different sensitivity and hysteresis 
settings for AH276 
?    Built-in protecting diode only for chip reverse power connecting 
?    -20癈 to +85癈 operating temperature 
?    Lead Free Package: SIP-4L 
?    SIP-4L: Available in Green Molding Compound (No Br, Sb)  
?    Lead-Free Finish; RoHS Compliant (Notes 1 & 2) 
?
    Halogen and Antimony Free. Green Device (Note 3)?/DIV>
 
 
Pin Assignments 
 
276
1  2
4
3
1 : Vcc
2 : DO
3 : DOB
4 : GND
( Top View )
 
 
 
 
 
 
Applications 
?    Dual-coil Brush-less DC Motor 
?    Dual-coil Brush-less DC Fan 
?    Revolution Counting 
?    Speed Measurement 
 
 
Notes: 
1. EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. All applicable RoHS exemptions applied. 
 
2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporateds definitions of Halogen- and Antimony-free, "Green"     
 
    and Lead-free. 
 
3. Halogen- and Antimony-free "Green products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and  
     
    <1000ppm antimony compounds. 
 
 
Typical Applications Circuit 
 
 
Brush-less DC Fan 
 
 
 
 
 
 
 
 
 
    
| 相關(guān)代理商/技術(shù)參數(shù) | 參數(shù)描述 | 
| AH276Q-PL-B-B | 功能描述:板機(jī)接口霍耳效應(yīng)/磁性傳感器 AIO DRV BIPOLR 400mA DUAL-COIL 3.5V-20V RoHS:否 制造商:Honeywell 類型:Bipolar Hall-Effect Digital Position Sensor 工作電源電壓:3 V to 24 V 電源電流:3.5 mA 最大輸出電流:20 mA 工作點(diǎn)最小值/最大值:5 G, 55 G 最小/最大釋放點(diǎn)(Brp):- 55 G, - 5 G 最大工作溫度:+ 150 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOT-23 | 
| AH276Q-PL-B-C | 功能描述:板機(jī)接口霍耳效應(yīng)/磁性傳感器 AIO DRV BIPOLR 400MA DUAL-COIL 3.5V-20V RoHS:否 制造商:Honeywell 類型:Bipolar Hall-Effect Digital Position Sensor 工作電源電壓:3 V to 24 V 電源電流:3.5 mA 最大輸出電流:20 mA 工作點(diǎn)最小值/最大值:5 G, 55 G 最小/最大釋放點(diǎn)(Brp):- 55 G, - 5 G 最大工作溫度:+ 150 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOT-23 | 
| AH276UZ4-AG1 | 制造商:Diodes Incorporated 功能描述:HALL AIO LATCH TO94 BULK 10K - Bulk 制造商:Diodes Incorporated 功能描述:IC HALL EFFECT LATCH AIO TO-94 | 
| AH276UZ4-BG1 | 制造商:Diodes Incorporated 功能描述:HALL AIO LATCH TO94 BULK 10K - Bulk 制造商:Diodes Incorporated 功能描述:IC HALL EFFECT LATCH AIO TO-94 | 
| AH276UZ4-CG1 | 制造商:Diodes Incorporated 功能描述:HALL AIO LATCH TO94 BULK 10K - Bulk 制造商:Diodes Incorporated 功能描述:IC HALL EFFECT LATCH AIO TO-94 |