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 TA84002F
TOSHIBA BIPOLAR LINEAR INTEGRATED CIRCUIT MULTI-CHIP
TA84002F
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 VM (motor) : 10 V to 30 V VCC (control) : 4.5 V to 5.5 V l Output current : 1.0 A (peak) l Multichip IC consisting of four P-channel MOSFETs and one main chip. l Full-step and half-step are available l Internal thermal-shutdown circuit l Package : HSOP20-P-450-1.00 Weight : 0.79 g (Typ.)
Note1: This product has a multichip (MCP) structure utilizing Pch MOS technology. Take care when handling because Pch MOS has low electrostatic resistance.
PIN ASSIGNMENT
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TA84002F
BLOCK DIAGRAM
TRUTH TABLE
PHASE X H L ENABLE H L L OUT (+) OFF H L OUT (-) OFF L H
X:
Don't care
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TA84002F
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. l During CHOP OFF, the current circulates the motor winding, P-channel MOS and the diode of P-channel MOS. l Power dissipation is divided by the five chips.
: (1) CHOP ON (Drive Mode) Q1: ON, Q2: OFF Q3: OFF, Q4: ON : (2) CHOP OFF (Slow Decay) Q1: ON, Q2: OFF Q3: OFF, Q4: OFF : (3) ALL OFF (Fast Decay)
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PWM CURRENT CONTROL
Output current is sensed and cotrolled independently in each bridge by an external sense resistor (RFN), internal comparator, and mono-stable multi-vibrator. When the bridge is turn ON, current increases in the motor winding and flows through the external sense resistor until the sense voltage (VNF) reaches the level set at the comparator' s input: Vref / 5 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. tOFF 1.1 CR The value of the current limiting (IO) is approximated by IO = (Vref / 5) / RNF-0.05
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TIMING CHART
(1) Full Step
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(2) Half Step
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MAXIMUM RATINGS (Ta = 25C)
CHARACTERISTIC Supply Voltage (Motor) Supply Voltage (Control) Output Current Input Voltage Power Dissipation Operating Temperature Storage Temperature SYMBOL VM VCC IO VIN PD Topr Tstg RATING 35 7 1.0 GND - 0.4 to VCC + 0.4 V 2.5 (Note) -30 to 85 -55 to 150 UNIT V V A / ch V W C C
Note:
This rating is obtained by mounting on 50 x 50 x 1.6 mm PCB that occupied above 60% of copper.
RECOMMENDED OPERATION CONDITION (Ta = -30 to 85C)
CHARACTERISTIC Supply Voltage (Control) Supply Voltage (Motor) Output Current Input Voltage Reference Voltage PWM Frequency SYMBOL VCC VM IO VIN Vref fPWM TEST CIR- CUIT PHASE, ENABLE TEST CONDITION MIN 4.5 10 GND 1.2 15 TYP. 5.0 24 2.5 30 MAX 5.5 30 0.8 VCC VCC - 0.5 50 UNIT V V A / ch V V kHz
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ELECTRICAL CHARACTERISTICS (Ta = 25C, VCC = 5 V, VM = 24 V)
CHARACTERISTIC SYMBOL VIN(H) Input Voltage VIN(L) IIN(H) Input Current IIN(L) IIN(L) ICC1 ICC2 ICC3 3 4 2 PHASE, ENABLE, VIN = 5 V PHASE, VIN = GND ENABLE, VIN = GND ENABLE A / B = Low 2-Phase 100% ON ENABLE A / B = Low 2-Phase 100% OFF ENABLE A = Low, B = High 1-Phase 100% ON ENABLE A = Low, B = High 1-Phase 100% OFF ENABLE A / B = High 2-Phase OFF ENABLE A / B = Low 2-Phase ON 5 ENABLE A = Low, B = High 1-Phase ON ENABLE A / B = High 2-Phase OFF 6 7 8 9 10 11 12 13 P-channel MOS Vref = 2.5 V VNF / Vref Vref = 2.5 V, RNF = 1 Tj IO = 0.5 A IO = 1.0 A IO = 0.5 A IF = 1.0 A IF = 1.0 A 1 PHASE, ENABLE TEST CIR- CUIT TEST CONDITION MIN 2.0 GND - 0.3 V TYP. 2 0 55 110 6 MAX VCC + 0.3 V 0.8 20 1 100 180 14 A UNIT
V
3
55
90
ICC4 Supply Current ICC5 IM1
4
6
14 mA
3

6 5
14 13
IM2
4.5
11
IM3 Output Saturation Voltage (Lower-side) ON Resistor (Upper-side) Diode Forward Voltage (Lower-side) Diode Forward Voltage (Upper-side) Reference Voltage Range Reference Current Reference Divider Ratio Setting Current Thermal Shutdown Temperature Thermal Shutdown Hysteriesis Output Leakage Current Pch MOS Drive Current VSAT1 VSAT2 Ron1 VF(L) VF(H) Vref Iref GAIN Iset TSD T IL (H) IL (L) IG
1.0 0.17 0.35 330
4 0.35 0.65 0.6 1.4 0.95 2.5 0.2 0.2 0.45 165 15 0 0 530
9 0.8 2.0 1.0 2.0 1.8 VCC - 0.5 5 0.23 0.55 100 50 730 A C C A A V V V V A
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TEST CIRCUIT
1. VIN (H), VIN (L)
2. IIN (H), IIN (L)
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3. ICC1, ICC3, ICC5
4. ICC2, ICC4
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5. IM1, IM2, IM3
6. VSAT1, VSAT2
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7. Ron1
8. VF (L)
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9. VF (H)
10. Iref
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11. Iset
12. IL (H), IL (L)
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13. IG
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TA84002F
APPLICATION CIRCUIT
In case of IOUT = 0.5 A
Note 1: Capacitor for noise suppression to be connected between the Power Supply (VCC, VM, Vref) and GND to stabilize the operation. Note 2: Utmost care is necessary in the design of the output line, VM and GND line since IC may be destroyed due to short-circuit between outputs, air contamination fault, or fault by improper grounding.
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PACKAGE DIMENSIONS
HSOP20-P-450-1.00 Unit : mm
Weight : 0.79 g (Typ.)
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RESTRICTIONS ON PRODUCT USE
000707EBA
* TOSHIBA is continually working to improve the quality and reliability of its products. Nevertheless, semiconductor devices in general can malfunction or fail due to their inherent electrical sensitivity and vulnerability to physical stress. It is the responsibility of the buyer, when utilizing TOSHIBA products, to comply with the standards of safety in making a safe design for the entire system, and to avoid situations in which a malfunction or failure of such TOSHIBA products could cause loss of human life, bodily injury or damage to property. In developing your designs, please ensure that TOSHIBA products are used within specified operating ranges as set forth in the most recent TOSHIBA products specifications. Also, please keep in mind the precautions and conditions set forth in the "Handling Guide for Semiconductor Devices," or "TOSHIBA Semiconductor Reliability Handbook" etc.. * The TOSHIBA products listed in this document are intended for usage in general electronics applications (computer, personal equipment, office equipment, measuring equipment, industrial robotics, domestic appliances, etc.). These TOSHIBA products are neither intended nor warranted for usage in equipment that requires extraordinarily high quality and/or reliability or a malfunction or failure of which may cause loss of human life or bodily injury ("Unintended Usage"). Unintended Usage include atomic energy control instruments, airplane or spaceship instruments, transportation instruments, traffic signal instruments, combustion control instruments, medical instruments, all types of safety devices, etc.. Unintended Usage of TOSHIBA products listed in this document shall be made at the customer's own risk. * The products described in this document are subject to the foreign exchange and foreign trade laws. * The information contained herein is presented only as a guide for the applications of our products. No responsibility is assumed by 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.
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