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PDF UA9849 Data sheet ( Hoja de datos )

Número de pieza UA9849
Descripción 3-PHASE MOTOR DRIVER
Fabricantes Unisonic Technologies 
Logotipo Unisonic Technologies Logotipo



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No Preview Available ! UA9849 Hoja de datos, Descripción, Manual

UNISONIC TECHNOLOGIES CO., LTD
UA9849
LINEAR INTEGRATED CIRCUIT
3-PHASE MOTOR DRIVER FOR
CD-ROMS
„ DESCRIPTION
The UTC UA9849 is ICs developed for CD-ROM spindle
motor drives. These ICs possess a short brake and
reverserotation brake for two types of brake functions, and also
contain FG output and rotation direction detection (FR) circuits,
making them high-functionality and high-performance ICs.
„ FEATURES
* Three-phase, full-wave, pseudo-linear drive system.
* Built-in power save and thermal shutdown functions.
* Built-in current limiter and Hall bias circuits.
* Built-in FG output.
* Built-in rotation direction detector.
* Built-in reverse rotation prevention circuit.
* Built-in short brake pin.
„ ORDERING INFORMATION
Normal
UA9849-SH1-T
Ordering Number
Lead Free
UA9849L-SH1-T
Halogen Free
UA9849G-SH1-T
HSOP-28
Package
HSOP-28
Packing
Tube
www.unisonic.com.tw
Copyright © 2012 Unisonic Technologies Co., Ltd
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UA9849 pdf
UA9849
LINEAR INTEGRATED CIRCUIT
„ ELECTRICAL CHARACTERISTICS(Cont.)
PARAMETER
SYMBOL
Output
Output Saturation High Level Voltage VOH
Output Saturation Low Level Voltage
VOL
Pre-Drive Current
IVML
Output Limit Current
ITL
Short Brake
On Voltage Range
VSBON
OFF Voltage Range
VSBOFF
Note: Not designed forradiation resistance.
TEST CONDITIONS
IO= -600mA
IO= 600mA
EC=0V output open
MIN TYP. MAX UNIT
1.0 1.5 V
0.4 0.8 V
35 70 mA
500 700 840 mA
3.5 V
1.5 V
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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UA9849 arduino
UA9849
LINEAR INTEGRATED CIRCUIT
„ OPERATION NOTES
(1) Power save
The power save input is an I / O circuit like the own shown in Fig.1.
The thermal derating characteristics of the power save pin is –8mV / °C, and the resistance will fluctuate
between 30% so be careful of the input voltage range.
(2) Hall input
The input circuit shown in Fig.4 is used for the Hall inputs.
The Hall elements can be connected either in series or in parallel.
(3) Thermal shutdown (TSD)
When the junction temperature reaches 175°C, the A1, A2, and A3 coil outputs go open circuit. The thermal
shutdown has approximately 15°C of hysteresis.
Vcc Vcc
H1
H2
H3
H1
H2
H3
(Hall bias)
Parallel connection
(Hall bias)
Series connection
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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