TA84002F Toshiba Semiconductor, TA84002F Datasheet
TA84002F
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TA84002F Summary of contents
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... TOSHIBA BIPOLAR LINEAR INTEGRATED CIRCUIT MULTI-CHIP PWM CHOPPER TYPE 2−PHASE BIPOLAR STEPPING MOTOR DRIVER The TA84002F is designed to drive both windings of a two−phase bipolar setpping motor. FEATURES l Internal PWM current control l Wide range of operating supply voltage V (motor (control ...
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... BLOCK DIAGRAM TRUTH TABLE PHASE ENABLE Don’t care OUT (+) OUT (−) OFF OFF TA84002F 2001-09-06 ...
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... OUTPUT STAGE l The TA84002F is Multichip IC consisting of four P−channel MOSFETs and one main chip. l Four P−channel MOSETs are used as upper−side power transistors. l Output current is controlled by swiching lower−side transistor. l Durin CHOP ON, the current flows through P−channel MOS, The motor winding, sink transistor and sense resistor ...
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... The comparator then triggers the mono−stable, which turn OFF the lower transistor of the bridge. The OFF time is determined by the mono−stable’ s external RC timing components. t ≈ 1.1 CR OFF The value of the current limiting ( RNF−0.05 O ref ) is approximated TA84002F / 5 ref 2001-09-06 ...
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... TIMING CHART (1) Full Step 5 TA84002F 2001-09-06 ...
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... Half Step 6 TA84002F 2001-09-06 ...
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... TEST CIR− SYMBOL TEST CONDITION CUIT V ― ― ― ― PHASE, ENABLE IN V ― ref f ― PWM 7 TA84002F RATING UNIT 1 0 2.5 (Note) W − °C −55 to 150 °C MIN TYP. MAX UNIT 4.5 5.0 5.5 10 ...
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... V = 2.5 V ref ref GAIN 11 VNF / Vref I ― 2.5 V, RNF = 1 Ω set ref TSD ― ∆T ― IL (H) P−channel MOS TA84002F = MIN TYP. MAX 2.0 ― 0.3 V GND ― 0.8 − 0 ― ― ― 55 100 ― ...
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... TEST CIRCUIT 1. V (H (H TA84002F 2001-09-06 ...
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... TA84002F 2001-09-06 ...
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... SAT SAT 11 TA84002F 2001-09-06 ...
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... (L) 12 TA84002F 2001-09-06 ...
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... VF (H) 10. I ref 13 TA84002F 2001-09-06 ...
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... I set 12. I (H TA84002F 2001-09-06 ...
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... TA84002F 2001-09-06 ...
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... Note 1: Capacitor for noise suppression to be connected between the Power Supply (V stabilize the operation. Note 2: Utmost care is necessary in the design of the output line short-circuit between outputs, air contamination fault, or fault by improper grounding. CC and GND line since IC may be destroyed due M 16 TA84002F , and GND to M ref 2001-09-06 ...
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... PACKAGE DIMENSIONS HSOP20−P−450−1.00 Weight : 0.79 g (Typ.) 17 TA84002F Unit : mm 2001-09-06 ...
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... TOSHIBA CORPORATION for any infringements of intellectual property or other rights of the third parties which may result from its use. No license is granted by implication or otherwise under any intellectual property or other rights of TOSHIBA CORPORATION or others. · The information contained herein is subject to change without notice. 18 TA84002F 000707EBA 2001-09-06 ...