1-2-2 3-Phase Stepper Motor Driver ICs SLA7611M Star Connection/Delta Connection ■Absolute Maximum Ratings Parameter (Ta=25°C) Symbol Ratings Unit Main Supply Voltage VBB 36 V Logic Supply Voltage VCC 7 V I O (Ave) 3 A Logic Input Voltage I O (Peak) VIN 6 –0.3 to VCC+0.3 A V REF Input Voltage VREF –0.3 to VCC+0.3 V PFD Input Voltage VPFD –0.3 to VCC+0.3 V Sense Voltage VRs –2 to 2 V Power Dissipation Junction Temperature PD Tj 4 150 W °C Output Current Operating Ambient Temperature Ta –20 to 85 °C Storage Temperature Tstg –30 to 150 °C Remarks tw < 1ms Without heatsink ■Recommended Operating Conditions Symbol Ratings Unit Main Supply Voltage Parameter VBB 10 to 30 V Remarks Logic Supply Voltage REF Input Voltage VCC VREF 3 to 5.5 0.2 to V CC V V The VCC surge voltage should be 0.5V or lower. The control current precision is degraded at 0.2V or lower. Case Temperature TC 110max °C Temperature at Pin-10 Lead (without heatsink) ■Electrical Characteristics (Ta = 25°C, V BB = 24V, V CC = 5V, unless otherwise specified) Parameter Symbol Main Supply Current IBB Logic Supply Current Icc Charge Pump Voltage VB Output Withstand Voltage Output MOS FET ON Resistance (total of the upper and lower values) VO Output MOS FET Diode Forward Voltage Logic Input Voltage Logic Input Current Ratings min typ max 20 10 VBB +5 Remarks mA mA V V 36 0.8 Ω IDS=3A VSD 1.5 V ISD=3A VIL VCC×0.25 V RDS (on) VIH IIL VCC×0.75 V µA ±1 µA ±1 IIH 100 Maximum Clock Frequency Fclock PFD Input Current IPFD ±10 RC Terminal Inflow Current IRC VPFDS 200 1.7 VCC VPFDM 0.7 1.3 0.3 PFD Input Voltage Unit VPFDF Excluding E na kHz µA VREF×0.2 µA V Slow Decay V Mixed Decay V Fast Decay V Steady-state Sense Voltage VRs REF Input Voltage REF Input Current VREF IREF PWM OFF Time TOFF Thermal Protection Circuit Activation Temperature Tj Hysteresis of Thermal Protection Circuit Activation Temperature ∆T j 10 °C TONC 2.5 µs Clock→Out TOFFC 2 µs Clock→Out Switching Time 130 ICs VCC 0 V ±10 µA 1.1×Rt×Ct µs 150 °C SLA7611M ■Internal Block Diagram ■Pin Assignment (Function Table) CP1 CP2 16 VCC 3 TSD UVLO Reg 15 VB VBB Pin No. 1 Symbol Sense 18 9 2 Out U 3 VCC Logic supply 4 5 RC PFD PWM OFF time setting 6 REF 7 Reset Control current setting Internal logic reset 8 Ena Output Enable/Disable control 9 10 VBB Main supply (motor supply) GND Device GND 11 Out V 12 CW/CCW Phase V output Forward/reverse control Charge Pump OUT Block 2 Clock 13 CW/CCW 12 F/H 14 Ena 8 Reset 7 OUTU Level shift & Pri-Driver Sequence Logic 11 OUTV 17 OUTW 1 5 13 Clock 14 15 Full/Half CP2 10 16 CP1 GND 17 18 Out W VB S + Current Control PWM Control 6 REF _ 4 PFD RC Function Current sense Phase U output Mixed Decay ratio setting Step Clock Full/half step control Charge pump capacitor 2 Charge pump capacitor 1 Phase W output Boost charge pump ■Typical Connection Diagram C2 C1 16 5V 3 CB + 18 15 VCC CP1 10 to 30V VB CP2 + 9 CA C5 VBB C4 C3 13 12 Microcomputer, etc. 14 8 7 R4 OUTU 11 CW/CCW OUTV SLA7611M F/H Ena 6 3φ SPM 17 OUTW Reset S R2 2 Clock REF PFD RC 5 1 GND 4 10 Rs Ct R1 R5 Rt R3 S-GND P-GND ■External Dimensions (ZIP18 with Fin [SLA18Pin]) Part Number Lot number 4.8 ±0.2 1.7±0.1 2.45±0.2 +1 (3) R-End 9.7 –0.5 9.9 ±0.2 16 ±0.2 13 ±0.2 φ 3.2±0.15×3.8 6.7±0.5 31±0.2 24.4±0.2 16.4±0.2 φ 3.2±0.15 (Unit : mm) +0.2 +0.2 0.65 –0.1 +0.2 1 –0.1 0.55 –0.1 4±0.7 17×P1.68±0.4=28.56±1 31.3±0.2 Other lead forming shapes are also available. For details, contact our sales representative. 1 2 3 . . . . . . . . 18 Forming No. No.871 Product Mass : Approx.6g ICs 131