LB11948T-TLM-E SANYO, LB11948T-TLM-E Datasheet
LB11948T-TLM-E
Specifications of LB11948T-TLM-E
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LB11948T-TLM-E Summary of contents
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... Ordering number : EN7947B LB11948T Overview The LB11948T is a low saturation voltage output PWM current control bipolar drive stepping motor driver optimal for use as the driver for the miniature low-voltage stepping motors used in portable electronic equipment such as portable thermal printers. Features • PWM current control (external excitation) • ...
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... ENABLE1 Note * : Levels shown as an asterisk (*) can be set to be either high or low. LB11948T Conditions ≤ > 4V Conditions PH1 = PH2 = 0V, EN1 = EN2 = 3.0V 3.0V PH1 = PH2 = EN1 = EN2 = 0V 3.0V PH1 = PH2 = EN1 = EN2 = +0.2A (source +0.4A (source -0.2A (sink -0.4A (sink (sink) ...
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... Package Dimensions unit : mm (typ) 3259 9. 0.65 0.22 (0.33) SANYO : TSSOP30(275mil) Pin Assignment LB11948T 1.4 1.2 1.0 0.8 0.6 0.15 0.4 0.2 0 – max -- Ta Specified PCB : 114.3×76.1×1.6mm PCB material : glass epoxy 0. Ambient temperature, Ta – °C Top view No.7947-3/13 100 ...
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... The motor current is set by the value of the sensing resistor Re connected between the E2 pin and ground. The current is set according to the following equation : VREF/Re (A) 26 D-GND2 Lower side internal diode anode connection 27 NC Unused 28 NC Unused 29 OUT2 Output OUT2 - 30 Output LB11948T Description No.7947-4/13 ...
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... Block Diagram V CC ENABLE1 PHASE1 ENABLE2 PHASE2 ST Reference voltage Thermal S-GND shutdown circuit 1VREG LB11948T Blanking time - + Blanking time - + OSC V CC VREF2 VREF1 CR 56kΩ VS1 Stepping Motor OUT1 OUT1- E1 VS2 OUT2 OUT2- E2 P-GND P-GND No.7947-5/13 ...
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... Sample Application Circuit 1Ω 8V 10μF 10μF 680pF Logic level input Logic level input PHASE1 PHASE2 LB11948T OUT1 - OUT2 - 1 M OUT1 OUT2 D-GND2 D-GND VS2 VS1 PGND GND 56kΩ VREF1 VREF2 ENABLE2 ENABLE1 PHASE2 13 14 PHASE1 1VREG deg 200 Hz 30 ...
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... No. PHASE1 ENABLE1 1-2 Phase Excitation Drive Sequence No. PHASE1 ENABLE1 No. PHASE1 ENABLE1 LB11948T Table 1 Clockwise drive OUT1 - OUT1 PHASE2 Table 2 Counterclockwise drive OUT1 - OUT1 PHASE2 Table 3 Clockwise drive OUT1 - OUT1 PHASE2 OFF OFF OFF OFF Table 4 Counterclockwise drive OUT1 - OUT1 PHASE2 ...
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... Phase Excitation Drive Sequence Clockwise drive 0 PHASE1 PHASE2 ENABLE1 ENABLE2 OUT1 OUT1 - OUT2 OUT2 - Counterclockwise drive 0 PHASE1 PHASE2 ENABLE1 ENABLE2 OUT1 OUT1 - OUT2 OUT2 - LB11948T No.7947-8/13 ...
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... Phase Excitation Drive Sequence Clockwise drive 0 PHASE1 PHASE2 ENABLE1 ENABLE2 OUT1 OUT1 - OUT2 OUT2 - : Output off state Clockwise drive 0 PHASE1 PHASE2 ENABLE1 ENABLE2 OUT1 OUT1 - OUT2 OUT2 - : Output off state LB11948T No.7947-9/13 ...
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... Switching Operation Timing Chart OUTA OUTA LB11948T tn tn: The noise canceller operating time Spike noise No.7947-10/13 ...
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... Fc = 1/T (Hz) The T2 fall time serves as the noise canceling time (Tn). This time is a forced-on time for the output, and the output is not turned off even when the E pin voltage is higher than the sense voltage that has been preset by VREF. LB11948T T2 T1 Fig. 1 ...
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... The ground terminals on the sensing resistors Re connected to the E pins (E1 and E2) must be connected as close as possible to the IC GND (pin 21), PGND (pin 22), or DGND (pins 5 and 26) pins as possible. • The capacitors between V CC and ground and between V BB and ground must be as close as possible to the corresponding V CC and V BB pin in the pattern. LB11948T [ Wire (rw) ...
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... SANYO Semiconductor Co.,Ltd. shall not be liable for any claim or suits with regard to a third party's intellctual property rights which has resulted from the use of the technical information and products mentioned above. This catalog provides information as of December, 2007. Specifications and information herein are subject to change without notice. LB11948T PS No.7947-13/13 ...