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TLE4728G

Features: • 2 ´ 0.7 amp. full bridge outputs• Integrated driver, control logic and current control (chopper)• Fast free-wheeling diodes• Max. supply voltage 45 V• Output stages are free of crossover current• Offset-phase turn-ON of output stages• All...

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SeekIC No. : 004521016 Detail

TLE4728G: Features: • 2 ´ 0.7 amp. full bridge outputs• Integrated driver, control logic and current control (chopper)• Fast free-wheeling diodes• Max. supply voltage 45 V•...

TLE4728G Data Sheet

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Part Number:
TLE4728G
Supply Ability:
5000

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  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

• 2 ´ 0.7 amp. full bridge outputs
• Integrated driver, control logic and current control
   (chopper)
• Fast free-wheeling diodes
• Max. supply voltage 45 V
• Output stages are free of crossover current
• Offset-phase turn-ON of output stages
• All outputs short-circuit proof
• Error-flag for overload, open load, overtemperature
• SMD package P-DSO-24-3


Pinout

Connection Diagram


Specifications

TA = 40 to 150 °
Parameter Symbol Limit Values Unit Remarks
min. max.
Supply voltage VS 0.3 45 V -
Error outputs VErr
IErr		 0.3
 45
3		 V
mA
Output current IQ -1 1 A -
Ground current IGND -2 - A -
Logic inputs VIxx 15 15 V IXX ; Phase 1, 2;
Inhibit
Oscillator voltage VOsc -0.3 6 V -
R1, R2 input voltage VRX -0.3 5 V  
Junction temperature
Tj		 -
 125
150		 °C
°C
max. 1,000 h
Storage temperature Tstg -50 125 °C -
Thermal resistance
Junction ambient
Junction ambient (soldered on a
35 mm thick 20 cm2 PC board
copper area)
Junction case		 Rth ja
Rth ja



Rth jc






75
50



15		 K/W
K/W



K/W




Measured on pin 5
Operating Range
Supply voltage VS 5 16 V -
Case temperature TC 40 110 °C Measured on pin 5
Pdiss = 2 W
Output current IQ 800 800 mA
Logic inputs VIXX 5 6 V IXX ; Phase 1, 2
Error output VErr
IErr
0		 25
1		 V
mA



Description

TLE4728G is a bipolar, monolithic IC for driving bipolar stepper motors, DC motors and other inductive loads that operate by constant current. The control logic and power output stages for two bipolar windings are integrated on a single chip which permits switched current control of motors with 0.7 A per phase at operating voltages up to 16 V.

The direction and value of current are programmable for each phase via separate control inputs. A common oscillator generates the timing for the current control and turn-on with phase offset of the two output stages. The two output stages in full-bridge configuration include fast integrated free wheeling diodes and are free of crossover current. The TLE4728G can be driven directly by a microprocessor in several modes by programming phase direction and current control of each bridge independently.

With the two error outputs the TLE4728G signals malfunction of the device. Setting the control inputs high resets the error flag and by reactivating the bridges one by one the location of the error can be found.




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