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PBL3717-2

Ericsson
Part Number PBL3717-2
Manufacturer Ericsson
Description Stepper Motor Drive Circuit
Published May 6, 2014
Detailed Description April 1997 PBL 3717/2 PBL 3717/2 Stepper Motor Drive Circuit Description PBL 3717/2 is a bipolar monolithic circuit int...
Datasheet PDF File PBL3717-2 PDF File

PBL3717-2
PBL3717-2

Overview
April 1997 PBL 3717/2 PBL 3717/2 Stepper Motor Drive Circuit Description PBL 3717/2 is a bipolar monolithic circuit intended to control and drive the current in one winding of a stepper motor.
The circuit consists of a LS-TTL compatible logic input stage, a current sensor, a monostable multivibrator and a high power H-bridge output stage with built-in protection diodes.
Two PBL 3717/2 and a small number of external components form a complete control and drive unit for LS-TTL or microprocessor-controlled stepper motor systems.
Key Features • Half-step and full-step modes.
• Switched mode bipolar constant current drive.
• Wide range of current control 5 - 1200 mA.
• Wide voltage range 10 - 50 V.
• Designed for unstabilized motor supply voltage.
• Current levels can be selected in steps or varied continuously.
• Thermal overload protection.
VCC Schmitt Trigger Phase I1 I0 VR & & & & ≥1 Time Delay VMM VMM PB L3 16-pin plastic batwing DIP 1 1 1 MA MB ≥1 28-pin plastic PLCC package + – + – + – 71 L B /2 P 17 37 Output Stage Monostable t = 0.
69 • R • C off T T Current Sensor PB PBL 3717/2 E L 7/ 1 7 3 GND C T Figure 1.
Block diagram.
1 http://www.
Datasheet4U.
com/ 7/ 2 20-pin SO wide batwing package 2 PBL 3717/2 Maximum Ratings Parameter * 6 3, 14 7, 8, 9 10 11 1, 15 7, 8, 9 10, 11 Symbol Min Max Unit Voltage Logic supply Motor supply Logic inputs Comparator input Reference input Current Motor output current Logic inputs Analog inputs Temperature Operating temperature Storage temperature * refers to DIP package VCC VMM VI VC VR IM II IA TJ TS 0 0 -0.
3 -0.
3 -0.
3 -1200 -10 -10 -40 -55 7 50 6 VCC 15 +1200 V V V V V mA mA mA +150 +150 °C °C Recommended Operating Conditions Parameter Symbol Min Typ Max Unit Logic supply voltage Motor supply voltage Motor output current Junction Temp Rise time logic inputs Fall time logic inputs VCC VMM IM TJ tr tf 4.
75 10 -1000 -20 5 5.
25 40 +1000 +125 2 2 V V mA °C µs µs I CC V CC 6 Schmitt Trigger Tim...


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