Ordering number : ENA0662 LB11620T Monolithic Digital IC Brushless Motor Driver Overview The LB11620T is a direct PWM drive predriver IC that is optimal for three-phase power brushless motors. A motor driver circuit with the desired output capability (voltage and current) can be implemented by adding discrete transistors or other power devices to the outputs of this IC. Since the LB11620T is provided in a miniature package, it is also appropriate for use with miniature motors as well. Features • Three-phase bipolar drive • Direct PWM drive (input of either a control voltage or a variable-duty PWM signal) • Built-in forward/reverse switching circuit • Full complement of protection circuits (current limiter, low-voltage, and automatic recovery lock (motor constraint) protection circuits) • Selectable Hall sensor signal pulse output Specifications Maximum Ratings at Ta = 25°C Parameter Supply voltage 1 Symbol VCC max Conditions Ratings Unit VCC pin 18 V 30 mA Output current IO max UL, VL, WL, UH, VH, WH pins Allowable power dissipation Pd max *Mounted on a circuit board. 0.8 W Operating temperature Topr -20 to +100 °C Storage temperature Tstg -55 to +150 °C * Mounted on a circuit board : 114.3mm×76.1mm×1.6mm, glass epoxy board. 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To verify symptoms and states that cannot be evaluated in an independent device, the customer should always evaluate and test devices mounted in the customer' s products or equipment. 22807 MS PC 20061227-S00002 No.A0662-1/11 LB11620T Recommended Operating Ranges at Ta = 25°C Parameter Symbol Conditions Supply voltage range 1-1 VCC1-1 VCC pin Supply voltage range 1-2 VCC1-2 VCC pin, with VCC shorted to VREG Output current IO Ratings Unit 8 to 17 4.5 to 5.5 UL, VL, WL, UH, VH, WH pins V V 25 mA mA 5 V constant voltage output current IREG -30 HP pin voltage VHP 0 to 17 V HP pin output current IHP 0 to 15 mA RD pin voltage VRD 0 to 17 V RD pin output current IRD 0 to 15 mA Electrical Characteristics at Ta = 25°C, VCC = 12V Parameter Symbol Ratings Conditions min Supply voltage 1 typ ICC1 Unit max 12 16 mA 5V constant voltage output (VREG pin) Output voltage VREG 5.0 5.3 V Line regulation ΔVREG1 VCC = 8 to 17V 4.7 40 100 mV Load regulation ΔVREG2 IO = -5 to -20mA 10 30 mV Temperature coefficient ΔVREG3 Design target 0 mV/°C Low-voltage protection circuit (VREG pin) Operating voltage VSDL 3.5 3.7 3.9 V Clear voltage VSDH 3.95 4.15 4.35 V Hysteresis ΔVSD 0.3 0.45 0.6 V 0.2 0.5 V 0.9 1.2 V 10 μA Output Block Output voltage 1-1 VOUT1-1 Output voltage 1-2 Low level IO = 400μA VOUT1-2 Low level IO = 10mA Output voltage 2 VOUT2 High level IO = -20mA Output leakage current IOleak VCC-1.1 VCC-0.9 V Hall Amplifier Block Input bias current IHB (HA) Common-mode input voltage range 1 VICM1 Common-mode input voltage range 2 VICM2 -2 When a Hall effect sensor is used For single-sided input bias μA -0.5 0.5 VCC-2.0 V 0 VCC V (Hall IC application) Hall input sensitivity 80 mVp-p Hysteresis ΔVIN (HA) 15 24 40 mV Input voltage low → high VSLH (HA) 5 12 20 mV Input voltage high → low VSHL (HA) -20 -12 -5 mV High-level output voltage VOH (PWM) 2.75 3.0 3.25 V Low-level output voltage VOL (PWM) 1.2 1.35 1.5 V -120 -90 -65 μA 1.4 1.6 1.9 Vp-p PWM Oscillator (PWM pin) External capacitor charge current ICHG Oscillator frequency f (PWM) Amplitude V (PWM) VPWM = 2.1V C = 2000pF 22 kHz Continued on next page No.A0662-2/11 LB11620T Continued from preceding page. Parameter Symbol Ratings Conditions min typ Unit max EI+ pin Input bias current Common-mode input voltage range IB (CTL) -1 1 μA VICM 0 VREG-1.7 V Input voltage 1 VCTL1 Output duty 100% 3.0 V Input voltage 2 VCTL2 Output duty 0% 1.35 V Input voltage 1L VCTL1L Design target value. 2.82 V 1.29 V 3.18 V 1.44 V When VREG = 4.7V, 100% Input voltage 2L VCTL2L Design target value. When VREG = 4.7V, 0% Input voltage 1H VCTL1H Design target value. When VREG = 5.3V, 100% Input voltage 2H VCTL2H Design target value. When VREG = 5.3V, 0% HP pin Output saturation voltage Output leakage current VHPL IO = 10mA IHPleak VO = 18V 0.2 0.5 V 10 μA CSD oscillator (CSD pin) High-level output voltage VOH (CSD) 2.7 3.0 3.3 V Low-level output voltage VOL (CSD) 0.7 1.0 1.3 V μA External capacitor charge current ICHG1 VCSD = 2V -3.15 -2.5 -1.85 External capacitor discharge current ICHG2 VCSD = 2V 0.1 0.14 0.18 Charge/discharge current ratio RCSD Charge current /discharge current 15 18 21 Low-level output voltage VRDL IO = 10mA 0.2 0.5 V Output leakage current IL (RD) VO = 18V 10 μA VRF RF-GND 0.275 V μA Times RD pin Current limiter circuit (RF pin) Limiter voltage 0.225 0.25 PWMIN pin Input frequency f (PI) 50 kHz High-level input voltage VIH (PI) 2.0 VREG V Low-level input voltage VIL (PI) 0 1.0 V Input open voltage VIO (PI) VREG-0.5 VREG V Hysteresis VIS (PI) High-level input current IIH (PI) VPWMIN = VREG Low-level input current IIL (PI) VPWMIN = 0V 0.2 0.25 0.4 V -10 0 10 μA -130 -90 μA F/R pin High-level input voltage VIH (FR) 2.0 VREG V Low-level input voltage VIL (FR) 0 1.0 V Input open voltage VIO (FR) VREG-0.5 Hysteresis VIS (FR) 0.2 High-level input current IIH (FR) Low-level input current IIL (FR) High-level input voltage VIH (N1) 2.0 VREG V Low-level input voltage VIL (N1) 0 1.0 V Input open voltage VIO (N1) High-level input current IIH (N1) VN1 = VREG Low-level input current IIL (N1) VN1 = 0V VREG V 0.25 0.4 V -10 0 10 -130 -90 μA μA N1 pin VREG-0.5 -10 0 -130 -100 VREG V 10 μA μA No.A0662-3/11 LB11620T Package Dimensions unit : mm (typ) 3260A Pd max – Ta Allowable power dissipation, Pd max – W 1.2 6.5 0.5 6.4 13 4.4 24 12 1 0.5 0.15 0.22 (1.0) 1.2max (0.5) 0.8 Specified circuit board : 114.3×76.1×1.6mm3 glass epoxy board Mounted on a circuit board 0.4 0.32 0 – 20 0 20 40 60 80 100 120 0.08 Ambient temperature, Ta – °C SANYO : TSSOP24(225mil) Pin Assignment VCC VREG EI+ N1 HP F/R 24 23 22 21 20 19 RD PWM IN3+ IN3- 17 16 15 14 13 8 9 10 11 12 UL IN1- IN1+ IN2- IN2+ PWMIN CSD 18 LB11620T 1 GND 2 3 RF WH 4 WL 5 6 VH VL 7 UH • Three-Phase Logic Truth Table (IN = “H” indicates the state where IN+ > IN-) F/R = “L” F/R=“H” Output IN1 IN2 IN3 IN1 IN2 IN3 1 H L H L H L PWM VH UL 2 H L L L H H WH UL 3 H H L L L H WH VL 4 L H L H L H UH VL 5 L H H H L L UH WL 6 L L H H H L VH WL • PWMIN pin Input state State High or open Output off Low Output on If the PWM pin is not used, the input must be held at the low level. • N1 pin Input state HP output High or open Three Hall sensor synthesized output Low Single Hall sensor output No.A0662-4/11 LB11620T Pin Functions Pin No. Pin 1 GND 2 RF Description Ground Output current detection. The current detection resistor (Rf) voltage is sensed by the RF pin to implement current detection. The maximum output current is set by RF to be IOUT = 0.25/Rf. 7 UH Outputs (PWM outputs). 5 VH These are push-pull outputs. 3 WH 8 UL Outputs 6 VL These are push-pull outputs. 4 WL IN1+, IN1- 10, 9 14, 13 IN2+, IN2IN3+, IN3- 15 PWM 12, 11 Hall sensor inputs from each motor phase. The logic high state indicates that IN+ > IN-. If inputs are provided by a Hall effect sensor IC, the common-mode input range is expanded by biasing either the + or - input. Functions as both the PWM oscillator frequency setting pin and the initial reset pulse setting pin. Connect a capacitor between this pin and ground. 16 RD Lock (motor constrained) detection state output. This output is turned on when the motor is turning and off when the lock protection function detects that the motor has been stopped. This is an open collector output. 17 CSD Sets the operating time for the lock protection circuit. Connect a capacitor between this pin and ground. Connect this pin to ground if the lock protection function is not used. 18 PWMIN PWM pulse signal input. The output goes to the drive state when this pin is low, and to the off state when this pin is high or open. To use this pin for control, a CTL amplifier input such that the TOC pin voltage goes to the 100% duty state must be provided. 19 F/R 20 HP Forward/reverse control input Hall signal output (HP output). This provides either a single Hall sensor output or a synthesized 3-sensor output. 21 N1 Hall signal output (HP output) selection 22 EI+ CTL amplifier + (noninverting) input. The PWMIN pin must be held at the low level to use this input for 23 VREG motor control 5V regulator output (Used as the control circuit power supply. A low-voltage protection circuit is built in.) Connect a capacitor between this pin and ground for stabilization. 24 VCC Power supply. Connect a capacitor between this pin and ground to prevent noise and other disturbances from affecting this IC. No.A0662-5/11 LB11620T Hall Sensor Signal Input/Output Timing Chart F/R = " L " IN1 IN2 IN3 UH VH WH UL VL WL F/R = " H " IN1 IN2 IN3 UH VH WH UL VL WL Sections shown in gray are PWM output periods. No.A0662-6/11 CTL HP VREG PWMN PWM EI+ PWM IN PWM OSC + - F/R F/R IN1 N1 COMP VCC IN1+ IN1- HP LOGIC RD RD VREG LVSD IN2+ IN2- IN3+ IN3- HALL HYS AMP HALL LOGIC CONTROL LOGIC CSD OSC CSD + GND CURR LIM PRI DRIVER VREG RF WL WH VL VH UL UH VCC VREG + 5V + VM LB11620T Block Diagram and Application Example 1 Bipolar transistor drive (high side PWM) using a 5V power supply No.A0662-7/11 HP VREG PWMN PWM EI+ PWM IN PWM OSC + - F/R F/R IN1 N1 COMP VCC IN1+ IN1- HP LOGIC RD RD VREG LVSD IN2+ IN2- IN3+ IN3- HALL HYS AMP HALL LOGIC CONTROL LOGIC CSD OSC CSD + GND CURR LIM PRI DRIVER VREG RF WL WH VL VH UL UH VCC VREG TR TR TR + VM(12V) LB11620T Application Example 2 54 MOS transistor drive (low side PWM) using a 12V single-voltage power supply No.A0662-8/11 HP VREG PWMN PWM EI+ PWM IN PWM OSC + - F/R F/R IN1 N1 COMP VCC IN1+ IN1- HP LOGIC RD RD VREG LVSD IN2+ IN2- IN3+ IN3- HALL HYS AMP HALL LOGIC CONTROL LOGIC CSD OSC CSD + GND CURR LIM PRI DRIVER VREG RF WL WH VL VH UL UH VCC VREG + VCC(12V) + VM(24V) LB11620T Application Example 3 MOS transistor drive (low side PWM) using a VCC = 12V, VM = 24V power supply system No.A0662-9/11 HP VREG PWMN PWM EI+ PWM IN PWM OSC + - F/R F/R IN1 N1 COMP VCC IN1+ IN1- HP LOGIC RD RD VREG LVSD IN2+ IN2- IN3+ IN3- HALL HYS AMP HALL LOGIC CONTROL LOGIC CSD OSC CSD + GND CURR LIM PRI DRIVER VREG RF WL WH VL VH UL UH VCC VREG + VM(24V) LB11620T Application Example 4 MOS transistor drive (low side PWM) using a 24V single-voltage power supply No.A0662-10/11 LB11620T SANYO Semiconductor Co.,Ltd. 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 Semiconductor Co.,Ltd. products described or contained herein. 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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 February, 2007. Specifications and information herein are subject to change without notice. PS No.A0662-11/11