TLE4728G |
RFQ for TLE4728G Required Field |
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| Product | Manufacturers | Pack | D/C |
| TLE4728G | - | SOP24 | - |
TLE 4728 G 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 device 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 TLE 4728 G 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.
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 |
| 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 |
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