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UDN2916LB-T Datasheet(PDF) 1 Page - Allegro MicroSystems |
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UDN2916LB-T Datasheet(HTML) 1 Page - Allegro MicroSystems |
1 / 10 page DUAL FULL-BRIDGE PWM MOTOR DRIVER The UDN2916B, UDN2916EB, and UDN2916LB motor drivers are designed to drive both windings of a bipolar stepper motor or bidirectionally control two dc motors. Both bridges are capable of sustaining 45 V and include internal pulse-width modulation (PWM) control of the output current to 750 mA. The outputs have been opti- mized for a low output saturation voltage drop (less than 1.8 V total source plus sink at 500 mA). For PWM current control, the maximum output current is deter- mined by the user’s selection of a reference voltage and sensing resistor. Two logic-level inputs select output current limits of 0, 33, 67, or 100% of the maximum level. A PHASE input to each bridge determines load current direction. The bridges include both ground clamp and flyback diodes for protection against inductive transients. Internally generated delays prevent cross-over currents when switching current direction. Special power-up sequencing is not required. Thermal protection circuitry disables the outputs if the chip temperature exceeds safe operating limits. The UDN2916B is supplied in a 24-pin dual in-line plastic batwing package with a copper lead-frame and heat sinkable tabs for improved power dissipation capabilities. The UDN2916EB is supplied in a 44- lead power PLCC for surface mount applications. The UDN2916LB is supplied in a 24-lead surface-mountable SOIC. Their batwing construc- tion provides for maximum package power dissipation in the smallest possible construction. The UDN2916B, UDN2916EB, and UDN2916LB are available for operation from –20°C to 85°C. The UDQ2916B and UDQ2916LB are available for operation from –40°C to 105°C. All packages are lead (Pb) free, with 100% matte tin leadframe. FEATURES ■ 750 mA Continuous Output Current ■ 45 V Output Sustaining Voltage ■ Internal Clamp Diodes ■ Internal PWM Current Control ■ Low Output Saturation Voltage ■ Internal Thermal Shutdown Circuitry ■ Similar to Dual PBL3717, UC3770 UDN2916B (DIP) 1 2 3 4 5 6 7 8 9 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 θ 2 θ 1 V CC 2 V BB 1 GR OUND GR OUND GR OUND GR OUND 02 I 12 I PHAS E 2 V RE F 2 2 RC 1 RC V RE F 1 PHAS E 1 11 I 2B OUT SENS E 2 2 E 2A OUT 1A OUT 1 E SENS E 1 1B OUT 01 I LOAD S UPPLY LOG IC S UPPLY Dwg. PP-005 ABSOLUTE MAXIMUM RATINGS at T J ≤ ≤≤≤≤ 150°C Motor Supply Voltage, V BB .................... 45 V Output Current, I OUT (Peak) ........................................ +1.0 A (Continuous) .......................... +750 mA Logic Supply Voltage, V CC ................... 7.0 V Logic Input Voltage Range, V IN ......................... -0.3 V to V CC +0.3 V Output Emitter Voltage, V E .................. 1.5 V Package Power Dissipation, P D ........................................................ See Graph Operating Temperature Range, T A ................................. -20°C to +85°C Storage Temperature Range, T S ............................... -55°C to +150°C Output current rating may be limited by duty cycle, ambient temperature, and heat sinking. Under any set of conditions, do not exceed the specified peak current rating or a junction temperature of +150°C. 2916 |
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