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| Ordering number : EN4844 Monolithic Digital IC LB1692 Three-Phase Brushless Motor Driver Overview The LB1692 is a three-phase brushless motor driver IC. It is optimal for use with DC fan motors in equipment such as air conditioners or water heaters. The LB1692 is a highbreakdown voltage version of the LB1690. Package Dimensions unit: mm 3037A-DIP20H [LB1692] Functions and Features * * * * * * * Three-phase brushless motor driver 60 V breakdown voltage, 2.5 A output current Built-in current limiter Built-in low voltage protection circuit Built-in thermal protection circuit Built-in Hall amplifier with hysteresis FG output function SANYO: DIP20H Specifications Absolute Maximum Ratings at Ta = 25C Parameter Maximum supply voltage Output current Allowable power dissipation Operating temperature Storage temperature Symbol VCC max VM max IO Pd max1 Pd max2 Topr Tstg Independent IC With an arbitrarily large heat sink Conditions Ratings 10 60 2.5 3 20 -20 to +100 -55 to +150 Unit V V A W W C C Allowable Operating Ranges at Ta = 25C Parameter Supply voltage range Symbol VCC VM Conditions Ratings 4.5 to 5.5 5 to 56 Unit V V SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN 73098HA (OT)/63094TH (OT) A8-8679 No. 4844-1/5 LB1692 Electrical Characteristics at Ta = 25C, VCC = 5 V, VM = 45 V Parameter Current drain Symbol ICC1 ICC2 VO sat1 VO sat2 IO leak IHB 1.5 VIN VSLH VSHL VFGL RFG Forward Stop Reverse VFSR1 VFSR2 VFSR3 VRf TSD TSD VLVSD VLVSD 3.5 0.2 Design target value 2.1 4.2 0.42 150 LH HL IFG = 5 mA 7.5 23 5 -25 30 15 -15 1 IO = 1 A, VO (sink) + VO (source) IO = 2 A, VO (sink) + VO (source) When stopped Conditions min typ 4 10 2.1 3.0 max 6 15 3.0 4.2 100 Unit mA mA V V A Output saturation voltage Output leakage current [Hall amplifier] Input bias current Common mode input voltage range Hysteresis Input voltage [FG pin] (Speed pulse output) Output low level voltage Pull-up resistance Forward, reverse, and stop operation 4 3.2 37 25 -5 A V mV mV mV 0.16 10 0 2.5 5.0 0.5 180 25 3.8 0.3 0.4 12.5 0.8 2.9 V k V V V Current control operation limiter Thermal cutoff operating temperature Hysteresis Low voltage protection operating voltage Hysteresis 0.6 V C C 4.1 0.4 V V Pin Assignment (Top view) No. 4844-2/5 LB1692 Truth Table Item Source Sink OUT3 OUT2 OUT2 OUT3 OUT3 OUT1 OUT1 OUT3 OUT2 OUT3 OUT3 OUT2 OUT1 OUT2 OUT2 OUT1 OUT2 OUT1 OUT1 OUT2 OUT1 OUT3 OUT3 OUT1 Input IN1 H IN2 H IN3 L Forward/Reverse Control FSR L H L H L H L H L H L H 1 2 H L L 3 L L H 4 L H L 5 H L H 6 FSR Forward: L (0 to 0.8 V) Reverse: H (4.2 to 5.0 V) L H H FG Output Block Diagram and Peripheral Circuits No. 4844-3/5 LB1692 Pin Functions Pin IN1+, IN1- IN2+, IN2- IN3+, IN3- OUT1 OUT2 OUT3 VCC VM Rf GND Pin No. 17, 18 15, 16 13, 14 5 6 7 1 10 2, 8 11 Function OUT1: A logic high level indicates that the Hall device input pins are in the state IN+ > IN-. OUT2: A logic high level indicates that the Hall device input pins are in the state IN+ > IN-. OUT3: A logic high level indicates that the Hall device input pins are in the state IN+ > IN-. Output pin 1 Output pin 2 Output pin 3 Power supply for all sections other than the output block Power supply that provides the output power Output current detection pin. The output current is converted to a voltage for detection by a resistor connected between this pin and GND. Ground for all sections other than the output block The Rf pin voltage will be the lowest output transistor potential. Forward/stop/reverse control pin The voltage on this pin controls the IC forward, stop, or reverse operation. Forward: 0 to 0.8 V Stop: 2.1 to 2.9 V Reverse: 4.2 to 5.0 V Speed pulse output pin 1. A pull-up resistor is built in. Speed pulse output pin 2. A pull-up resistor is built in. FSR 12 FG1 FG2 20 19 1. Position Detection Circuit (Hall device input circuit) The position detection circuit is a differential amplifier with hysteresis (typically 30 mV). Voltages within the common mode input voltage range (1.5 V to VCC - 1.8 V) should be used as the operating DC level. We recommend using an input level that is more than three times the hysteresis, i.e., on the order of 120 to 160 mVp-p. 2. Current Control Circuit Current control is performed by switching the sink side transistor from the saturated to the unsaturated range. Therefore, it is possible for ASO to be a problem. VRf I= (A) Rf Therefore, if at all possible, applications should be designed so that the current limiter does not operate. Also, be especially careful to design applications so that the maximum output current (2.5 A) is not exceeded when the current limiter operates. Note that a current limiter must be added to the VM power supply. (We recommend a current limiter with a short delay time and with a design current that is about 60 to 70% of the current control circuit's current value.) 3. Protection Circuits * Low voltage protection circuit The sink side output drivers are turned off if the VCC pin voltage falls below the stipulated range. This circuit is provided to prevent incorrect operation. * Thermal cutoff protection circuit If the junction temperature exceeds the stipulated temperature range, the sink side output drivers are turned off. This is identical to the operation of the circuit described in 3-1 above. 4. VM power supply minimum voltage The VM power supply voltage should be greater than or equal to the VCC voltage. VM VCC 5. FG Output Circuit The position detection inputs IN1, IN2, and IN3 are combined and the output is generated using waveform shaping. The frequencies of those outputs are proportional to the rotational speed signal, and, as seen from the position detectors, are equal to the input frequency itself (FG1) and three times the input frequency (FG2). No. 4844-4/5 LB1692 s No products described or contained herein are intended for use in surgical implants, life-support systems, aerospace equipment, nuclear power control systems, vehicles, disaster/crime-prevention equipment and the like, the failure of which may directly or indirectly cause injury, death or property loss. s Anyone purchasing any products described or contained herein for an above-mentioned use shall: Accept full responsibility and indemnify and defend SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors and all their officers and employees, jointly and severally, against any and all claims and litigation and all damages, cost and expenses associated with such use: Not impose any responsibility for any fault or negligence which may be cited in any such claim or litigation on SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors or any of their officers and employees jointly or severally. s Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for volume production. SANYO believes information herein is accurate and reliable, but no guarantees are made or implied regarding its use or any infringements of intellectual property rights or other rights of third parties. This catalog provides information as of July, 1998. Specifications and information herein are subject to change without notice. PS No. 4844-5/5 |
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