 |
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
| Datasheet File OCR Text: |
| L293B L293E PUSH-PULL FOUR CHANNEL DRIVERS s s s s s s OUTPUT CURRENT 1A PER CHANNEL PEAK OUTPUT CURRENT 2A PER CHANNEL (non repetitive) INHIBIT FACILITY HIGH NOISE IMMUNITY SEPARATE LOGIC SUPPLY OVERTEMPERATURE PROTECTION DIP16 POWERDIP(16+2+2) DESCRIPTION The L293B and L293E are quad push-pull drivers capable of delivering output currents to 1A per channel. Each channel is controlled by a TTLcompatible logic input and each pair of drivers (a full bridge) is equipped with an inhibit input which turns off all four transistors. A separate supply input is provided for the logic so that it may be run off a lower voltage to reduce dissipation. Additionally, the L293E has external connection of PIN CONNECTION (Top view) ORDERING NUMBERS: L293B L293E sensing resistors, for switchmode control. The L293B and L293E are package in 16 and 20pin plastic DIPs respectively ; both use the four center pins to conduct heat to the printed circuit board. POWERDIP (16+2+2) - L293E DIP16 - L293B July 2003 1/12 L293E L293B BLOCK DIAGRAMS DIP16 - L293B POWERDIP (16+2+2) - L293E 2/12 L293E L293B SCHEMATIC DIAGRAM (*) In the L293 these points are not externally available. They are internally connected to the ground (substrate). O Pins of L293 () Pins of L293E. ABSOLUTE MAXIMUM RATINGS Symbol Vs Vss Vi Vinh Iout Ptot Tstg, Tj Parameter Supply Voltage Logic Supply Voltage Input Voltage Inhibit Voltage Peak Output Current (non repetitive t = 5ms) Total Power Dissipation at Tground-pins = 80C Storage and Junction Temperature Value 36 36 7 7 2 5 -40 to +150 Unit V V V V A W oC 3/12 L293E L293B THERMAL DATA Symbol Rth j-case Rth j-amb Parameter Thermal Resistance Junction-case Thermal Resistance Junction-ambient Max. Max. Value 14 80 Unit o o C/W C/W ELECTRICAL CHARACTERISTCS Symbol Vs V Parameter Supply Voltage Logic Supply Voltage Total Quiescent Supply Current Test Condition Min. V Typ. Max. 36 36 Unit V V mA mA mA mA mA mA V ss ss 4.5 Vi = L; Io = 0; Vinh = H Vi = h; Io = 0; Vinh = H Vinh = L 2 16 44 16 16 -0.3 VSS 7V VSS > 7V Vil = 1.5V 2.3V VIH VSS - 0.6V -0.3 VSS 7V VSS > 7V 2.3 2.3 -30 1.4 1.2 30 2.3 2.3 Is 6 24 4 60 22 24 1.5 Iss Total Quiescent Logic Supply Current Vi = L; Io = 0; Vinh = H Vi = h; Io = 0; Vinh = H Vinh = L ViL Input Low Voltage Input High Voltage ViH IiL IiH VinhL VinhH Vss 7 -10 100 1.5 V V V A A V V V A A V V V ns ns ns ns Low Voltage Input Current High Voltage Input Current Inhibit Low Voltage Inhibit High Voltage ss 7 -100 10 1.8 1.8 2 IinhL IinhH VCEsatH VCEsatL VSENS tr tf ton toff Low Voltage Inhibit Current High Voltage Inhibit Current Sink Output Saturation Voltage Sensing Voltage (pins 4, 7, 14, 17) (**) Rise Time Fall Time Turn-on Delay Turn-off Delay VinhL = 1.5V 2.3V VinhH Vss- 0.6V Io = 1A Source Output Saturation Voltage Io = -1A 0.1 to 0.9 Vo (*) 0.9 to 0.1 Vo (*) 0.5 Vi to 0.5 Vo (*) 0.5 Vi to 0.5 Vo (*) 250 250 750 200 * See figure 1 ** Referred to L293E TRUTH TABLE Vi (each channel) H L H L (*) High output impedance (**) Relative to the considerate channel Vo H L X (*) Vinh (**) H H L L X (*) 4/12 L293E L293B Figure 1. Switching Timers Figure 2. Saturation voltage versus Output Current Figure 4. Sink Saturation Voltage versus Ambient Temperature Figure 3. Source Saturation Voltage versus Ambient Temperature Figure 5. Quiescent Logic Supply Current versus Logic Supply Voltage 5/12 L293E L293B Figure 6. Output Voltage versus Input Voltage APPLICATION INFORMATION Figure 8. DC Motor Controls (with connection to ground and to the supply voltage) Figure 7. Output Voltage versus Inhibit Voltage Vinh H H L A H L X M1 Fast Motor Stop Run Free Running Motor Stop L = Low H = High X = Don't Care B H L X Run M2 Fast Motor Stop Free Running Motor Stop Figure 9. Bidirectional DC Motor Control Inputs Vinh = H C=H;D=L C=L;D=H C=D Vinh = L L = Low H = High Function Turn Right Turn Left Fast Motor Stop C = X ; D = X Free Running Motor Stop X = Don't Care 6/12 L293E L293B Figure 10. Bipolar Stepping Motor Control 7/12 L293E L293B Figure 11. Stepping Motor Driver with Phase Current Control and Short Circuit Protection 8/12 L293E L293B MOUNTING INSTRUCTIONS The R th j-amb of the L293B and the L293E can be reduced by soldering the GND pins to a suitable copper area of the printed circuit board as shown in figure 12 or to an external heatsink (figure 13). During soldering the pins temperature must not exceed 260C and the soldering time must not be longer than 12 seconds. The external heatsink or printed circuit copper area must be connected to electrical ground. Figure 12. Example of P.C. Board Copper Area which is Used as Heatsink Figure 13. External Heatsink Mounting Example (Rth = 30C/W) 9/12 L293E L293B DIM. MIN. a1 B b b1 D E e e3 F I L Z 0.51 0.77 mm TYP. MAX. MIN. 0.020 1.65 0.5 0.25 20 8.5 2.54 17.78 7.1 5.1 3.3 1.27 0.030 inch TYP. MAX. OUTLINE AND MECHANICAL DATA 0.065 0.020 0.010 0.787 0.335 0.100 0.700 0.280 0.201 0.130 DIP16 0.050 10/12 L293E L293B DIM. MIN. a1 B b b1 D E e e3 F I L Z 0.38 0.51 0.85 mm TYP. MAX. MIN. 0.020 1.40 0.50 0.50 24.80 8.80 2.54 22.86 7.10 5.10 3.30 1.27 0.015 0.033 inch TYP. MAX. OUTLINE AND MECHANICAL DATA 0.055 0.020 0.020 0.976 0.346 0.100 0.900 0.280 0.201 0.130 Powerdip 20 0.050 11/12 L293E L293B Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. STMicroelectronics acknowledges the trademarks of all companies referred to in this document. The ST logo is a registered trademark of STMicroelectronics (c) 2003 STMicroelectronics - All Rights Reserved STMicroelectronics GROUP OF COMPANIES Australia - Brazil - Canada - China - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan -Malaysia - Malta - Morocco Singapore - Spain - Sweden - Switzerland - United Kingdom - United States. http://www.st.com 12/12 |
Price & Availability of L293B03
 |
|
|
|
|
All Rights Reserved © IC-ON-LINE 2003 - 2022 |
| [Add Bookmark] [Contact Us] [Link exchange] [Privacy policy] |
|
Mirror Sites : [www.datasheet.hk]
[www.maxim4u.com] [www.ic-on-line.cn]
[www.ic-on-line.com] [www.ic-on-line.net]
[www.alldatasheet.com.cn]
[www.gdcy.com]
[www.gdcy.net] |