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PDF UH277 Data sheet ( Hoja de datos )

Número de pieza UH277
Descripción COMPLEMENTARY OUTPUTS HALL EFFECT LATCH IC
Fabricantes Unisonic Technologies 
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No Preview Available ! UH277 Hoja de datos, Descripción, Manual

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UNISONIC TECHNOLOGIES CO., LTD
UH277
LINEAR INTEGRATED CIRCUIT
COMPLEMENTARY OUTPUTS
HALL EFFECT LATCH IC
DESCRIPTION
The UTC UH277 is a Latch-Type Hall Effect sensor with built-in
complementary output drivers. It’s designed with internal temperature
compensation circuit and built-in protection diode prevent reverse
power fault. The application is aimed for brush-less DC Fan
The UH277 Outputs operate as the Hysteresis Characteristics.
The Outputs alternately ON and OFF when either the magnetic flux
density larger than threshold BOP or the magnetic flux density lower
than BRP.
1
SIP-4
FEATURES
* Widen Power Supply range from 3V ~ 20V.
* On-chip Hall sensor with excellent hysteresis.
* Open Collector outputs had the sinking capability up to 300mA.
* Output Clamping Diodes reduce the peak output voltages during
switching.
* Build-in reverse protection diode.
*Pb-free plating product number: UH277L
ORDERING INFORMATION
Order Number
Normal
Lead Free Plating
UH277-G04-K
UH277L-G04-K
UH277L-G04-K
(1)Packing Type
(2)Package Type
(3)Lead Plating
Package
SIP-4
Packing
Bulk
(1) B: Bulk
(2) G04: SIP-4
(3) L: Lead Free Plating, Blank: Pb/Sn
PIN DESCRIPTION
PIN NO. PIN NAME
1 VCC
2 DO
3 DOB
4 VSS
P/I/O
P
O
O
P
DESCRIPTION
Positive Power Supply
Output Pin
Output Pin
Ground
www.unisonic.com.tw
Copyright © 2005 Unisonic Technologies Co., Ltd
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UH277 pdf
UH277
TYPICAL APPLICATION CIRCUIT
LINEAR INTEGRATED CIRCUIT
UTC UH277
+
- Vcc
1 234
coil1 coil2
Brushless DC Fan
TEST CIRCUIT
14V UTC UH277
RL1
820
RL2
820 CL1
20pF
DO
CL2
20pF
DOB
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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