Ordering number : ENN7105 Monolithic Digital IC LB11822 Three-Phase Brushless Motor Driver for OA Products Overview Package Dimensions The LB11822 is a three-phase brushless motor driver that unit: mm is optimal for driving drum and paper feed motors in laser 3147B-DIP28H printers and plain paper copiers. This IC adopts a direct LB11822 PWM drive technique for minimal power loss. Flexible control of motor speed in response to an externally 28 15 provided clock frequency (corresponding to the FG frequency) can be implemented by using the LB11822 in R1.7 conjunction with the Sanyo LB11825M. Functions and Features 1 20.0 14 Three-phase bipolar drive (30 V, 3.1 A) 27.0 Direct PWM drive Built-in low side inductive kickback absorbing diode Speed discriminator + P speed control LL Speed locked state detection output 1.93 1.78 0.6 1.0 Built-in forward/reverse switching circuit SANYO: DIP28H Full complement of built-in protection circuits, including current limiter circuit, thermal protection circuit, and motor lock protection circuit. Specifications Absolute Maximum Ratings at Ta = 25C Parameter Symbol Conditions Ratings Unit Supply voltage V max 30 V CC Output current I max T 500 ms 3.1 A O Allowable power dissipation 1 Pd max1 Independent IC 3 W Allowable power dissipation 2 Pd max2 When infinitely large heat sink 20 W Operating temperature Topr 20 to +80 C Storage temperature Tstg 55 to +150 C Any and all SANYO products described or contained herein do not have specifications that can handle applications that require extremely high levels of reliability, such as life-support systems, aircrafts control systems, or other applications whose failure can be reasonably expected to result in serious physical and/or material damage. Consult with your SANYO representative nearest you before using any SANYO products described or contained herein in such applications. SANYO assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all SANYO products described or contained herein. LB11822 Absolute Maximum Ratings at Ta = 25C Parameter Symbol Conditions Ratings Unit Supply voltage range 1 V 9.5 to 28 V CC Voltage output current I 0 to 30 mA REG LD output current ILD 0 to 15 mA Electrical Characteristics at Ta = 25C, V = VM = 24 V CC Ratings Parameter Symbol Conditions Unit min typ max Supply Current 1 I 1 23 30 mA CC Supply Current 2 I 2 When stopped 3.5 5 mA CC Output Block Output saturation voltage 1 V sat1 I = 1.0 A, V (SINK)+ V (SOURCE) 2.0 2.5 V O O O O Output saturation voltage 2 V sat2 I = 2.0 A, V (SINK)+ V (SOURCE) 2.6 3.2 V O O O O Output leakage current I leak 100 A O Lower side diode forward voltage 1 VD1 ID = 1.0 A 1.2 1.5 V Lower side diode forward voltage 2 VD2 ID = 2.0 A 1.5 2.0 V 5 V Voltage Output Output voltage VREG I = 5 mA 4.65 5.00 5.35 V O Voltage regulation VREG1 V = 9.5 to 28 V 30 100 mV CC Load regulation VREG2 I = 5 to 20 mA 20 100 mV O Hall Amplifier Input bias current IHB 2 0.5 A Common-mode input voltage range VICM 1.5 VREG1.5 V Hall input sensitivity 80 mV P-P Hysteresis V 15 24 42 mV IN Input voltage low high VSLH 12 mV Input voltage high low VSHL 12 mV PWM Oscillator Circuit High-level output voltage V (PWM) 2.5 2.8 3.1 V OH Low-level output voltage V (PWM) 1.2 1.5 1.8 V OL Oscillator frequency f(PWM) C = 3900 pF 18 kHz Amplitude V(PWM) 1.05 1.30 1.55 V P-P CSD Circuit Operating voltage V (CSD) 3.6 3.9 4.2 V OH External C charging current ICHG 17 12 9 A Operating time T(CSD) C = 10 F Design target value* 3.3 s Current Limiter Operation Limiter VRF V VM 0.45 0.5 0.55 V CC Thermal Shutdown Operation Thermal shutdown operating temperature TSD Design target value* (junction temperature) 150 180 C Hysteresis TSD Design target value* (junction temperature) 50 C FG Amplifier Input offset voltage VIO(FG) 10 +10 mV Input bias current IB(FG) 1 +1 A Output H level voltage V (FG) IFGO = 0.2 mA VREG1.2 VREG0.8 V OH Output L level voltage V (FG) IFGO = 0.2 mA 0.8 1.2 V OL FG input sensitivity Gain: 100 3 mV Schmitt amplitude for the next stage Design target value* 100 180 250 mV Operating frequency range 2 kHz Open-loop gain f(FG) = 2 kHz 45 51 dB Note: * These are design target values and are not tested. Continued on next page. No. 7105-2/11