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APX9141
Hall Effect Sensor IC with Reverse Voltage Protection
Features
• • • • • • •
On-chip Reverse Voltage Protection On-chip Hall Sensor Low Operating Supply Voltage : 3 V High Output Sinking Capability up to 400mA Versatile sensitivity and hysteresis setting Reliable and Rugged 4 pin TO-92M Package
General Description
The APX9141 is an integrated Hall Effect Sensor IC designed for electric commutation of DC brushless motor applications. The APX9141 still can operate at as low as 3 volts. The APX9141 is available in low cost TO -92M4 package with 3 different magnetic ranks.
Pin Description
Front View
APX9141
Applications
• • • •
Brushless DC Fan Revolution Counting Brushless DC Motor Speed Measurement
1
1 : V DD 2 : DO 3 : DOB 4 : GND 2 3 4
Ordering Information
A P X 91 41
Lead F ree C ode H a ndling C ode T em p. R ange P ac k a g e C o d e M agnetic R ank M agnetic R ank A T : | B o p , B rp | < 50 G au s s A : | B op , B rp | < 70 G auss B : | B op , B rp | < 100 G au s s D : | B o p , B rp | < 150 G a uss P ac k a g e C o d e E : T O - 92M 4 T em p. R ange E : -20 to 85 °C H a ndling C ode P B : P la s tic B a g T B : T a p e & B ox T R : T ape & R eel Lead F ree C ode L : L e a d F re e D e vic e B la n k : O rig in a l D evic e
ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and advise customers to obtain the latest version of relevant information to verify before placing orders. Copyright ANPEC Electronics Corp. Rev. A.7 - Apr., 2004 1 www.anpec.com.tw
APX9141
Block Diagram
R everse V oltage P rotection
A PX 9 14 1
VDD
T em perature C om pensated V oltage R egulator
H all E lem ent
C urrent A m plifier
Latch C ircuit
O utput B uffer 1
DO
H ysteresis C ontrol
O utput B uffer 2
DOB
S ensitivity C ontrol
G nd
Absolute Maximum Ratings
Symbol V DD V BD IDD IOUT Supply Output Supply Output
TA = 25°C unless otherwise noted
Rating 20 55 25 400 600 800 500 -20 to 85 -65 to 150 260 Unit V V mA mA mW °C
PD TA T STG T SOL
Parameter Voltage Breakdown Voltage Current Current – Continuous Hold Current Peak (Start Up) Maxim um Power Dissipation Operating Ambient Temperature Storage Tem perature Range Soldering Temperature (10 Sec.)
Electrical Characteristics
Symbol VDD VSAT IDD ILeak a tr b tf b ∆t b Parameter Supply Voltage Output Saturation Voltage Supply Current Output Leakage Current Output Rise Time Output Fall Time Switch Time Different
TA = 25°C, VDD=20V unless otherwise noted
Test Condition APX9141 Min. Typ. Max. 3 20 250 500 20 25 <0.1 10 0.8 5 0.1 1 3.5 7 Unit V mV mA µA µs µs µs
Operating VDD=14V, IOUT=400mA, B>Bop VDD=20V, Output Open VOUT=20V, VDD=20V, B
