LB11660RV

Ordering number : ENA0082 LB11660RV Overview Monolithic Digital IC Single-Phase Full-Wave Driver For Fan Motor The LB11660RV is a single-phase bipolar half pre-driver that can achieve high-efficient direct PWM drive with ease. It is ideal for driving small-sized cooling fans used in servers. The LB11660RV is provided with the RD (lock detection) output pin and the LB11660FV the FG (rotational speed detection) output pin, respectively. Features • Single-phase full-wave drive (15V-1.5A output transistor built in) upper output Tr incorporated half pre-driver. • Variable speed control by an external signal. →Separately-excited upper TR direct PWM control method, enabling silent, low-vibration variable speed control. • Lowest speed setting possible. • Current limiter circuit (the circuit actuated at IO = 1A when Rf = 0.5Ω, Rf determines the limiter value.). • Kickback absorption circuit built in. • Soft switching circuit achieves low power consumption, low loss, and low noise driving at a time of phase change. • HB built in. • Lock protection and automatic reset functions incorporated (including a circuit that changes the ON/OFF ratio according to the power supply voltage). • RD (lock detection) output. • Thermal protection circuit incorporated (design guaranteed). Any and all SANYO Semiconductor 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, aircraft's control systems, or other applications whose failure can be reasonably expected to result in serious physical and/or material damage. Consult with your SANYO Semiconductor representative nearest you before using any SANYO Semiconductor products described or contained herein in such applications. SANYO Semiconductor 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 products described or contained herein. D2706 TI IM B8-9145 No.A0082-1/9 LB11660RV Absolute Maximum Ratings at Ta = 25°C Parameter VCC maximum power supply voltage VM maximum power supply voltage OUT pin maximum output current OUT pin output withstand voltage 1 OUT pin output withstand voltage 2 PRE pin maximum source current PRE pin maximum sink current PRE pin output withstand voltage HB maximum output current VTH input pin withstand voltage RD output pin output withstand voltage RD output current Allowable power dissipation Operating temperature range Storage temperature range Symbol VCC max VM max IOUT max VOUT max1 VOUT max2 IPSO max IPSI max VP max HB VTH max VRD max IRD max Pd max Topr Tstg Mounted on a specified board *1 *2 T≤0.4µs Rf≥0.39Ω Conditions Ratings 20 20 1.5 20 26.5 30 -7 20 10 7 18 10 0.8 -30 to 95 -55 to 150 Unit V V A V V mA mA V mA V V mA W °C °C *1 A circuit board for mounting (114.3mm×76.1mm×1.6mm, glass epoxy resin) *2 Tj max = 150°C. Must be used within the operating temperature range in which Tj does not exceed 150°C. Recommended Operating Range at Ta = 25°C Parameter VCC power supply voltage VM power supply voltage Current limiter operating range VTH input level voltage range Hall input common phase input voltage range Symbol VCC VCC ILIM VTH VICM Conditions Ratings 4 to 15 3 to 15 0.6 to 1.2 0 to 6 0.2 to 3 Unit V V A V V Electrical Characteristics at Ta = 25°C, VCC = 12V, unless otherwise specified Ratings Parameter Circuit current HB voltage 6VREG voltage CT pin H level voltage CT pin L level voltage ICT pin charge current 1 ICT pin charge current 2 ICT pin discharge current 1 ICT pin discharge current 2 ICT charge/discharge ratio 1 ICT charge/discharge ratio 2 ICT charge/discharge ratio threshold voltage VTH bias current OUT output H saturation voltage PRE output L saturation voltage PRE output H saturation voltage IBVTH VOH VPL VPH IO=200mA, RL=1Ω IO=5mA IO= -20mA Symbol ICC1 VHB V6VREG VCTH VCTL ICTC1 ICTC2 ICTD1 ICTD2 RCT1 RCT2 VRCT VCC=12V VCC=6V VCC=12V VCC=6V VCC=12V VCC=6V During driving IHB=5mA 6VREG=5mA 1.05 5.80 3.4 1.4 1.7 1.3 0.11 0.34 12 3 6 -2 Conditions min typ 9 1.25 6 3.6 1.6 2.2 1.8 0.15 0.44 15 4 6.6 -1 0.6 0.2 0.9 max 12 1.40 6.20 3.8 1.8 2.7 2.3 0.19 0.54 18 5 7.3 0 0.8 0.4 1.2 V µA V V V mA V V V V µA µA µA µA Unit Continued on next page. No.A0082-2/9 LB11660RV Continued from preceding page. Ratings Parameter Current limiter PWM output H level voltage PWM output L level voltage PWM external C capacitor charge current PWM external C capacitor discharge current PWM oscillation frequency Hall input sensitivity RD output pin L voltage RD output pin leak current Thermal protection circuit FPWM VHN VRD IRDL THD C=200pF Zero peak value (including offset and hysteresis) IRD=5mA VRD=7V Design target value *3 150 180 IPWM2 Symbol VRf VPWMH VPWML IPWM1 VCC-VM Conditions min 450 2.2 0.4 -23 18 19 typ 500 2.5 0.5 -18 24 23 15 0.2 max 550 2.8 0.7 -14 30 27 25 0.3 30 210 mV V V µA µA kHz mV V µA °C Unit *3 These are design guarantee values, and are not tested. The thermal protection circuit is implemented to prevent the IC from being thermally damaged or burned when exposed to an environment exceeding the guaranteed operating temperature range. Thermal design must be carried out so that the thermal protection circuit will never be activated while the fan is running in a stable condition. Package Dimensions unit : mm (typ) 3178B 5.2 16 9 1.2 Pd max - Ta Mounted on a specified board: 114.3mm×76.1mm×1.6mm glass epoxy Allowable Power Dissipation, Pd max - W 0.8 4.4 6.4 0.6 0.5 0.4 0.35 1 0.65 (0.33) 8 0.15 0.22 1.5max 0.2 0 -30 0 30 60 90 120 ILB01805 (1.3) Ambient Temperature, Ta - °C SANYO : SSOP16(225mil) Truth Table INH L H L H L IN+ L H L H L H VTH L H CPWM H L L H CT OUT1 H OFF OFF OFF OFF OFF OUT2 OFF H OFF OFF OFF OFF PRE1 L H L H L H PRE2 H L H L H L OFF L Rotating - regeneration Lock protection RD Mode Rotating - drive CPWM-H: CPWM>VTH, CPWM-L: CPWM The current limiter is actuated when the voltage of the current-sensing resistors between VCC and VM increases to 0.5V or more. Since the current of a current limiter circuit is limited by the current determined by IO = VRf/Rf (where VRf = 0.5V typ, Rf: current-sensing resistance), the current limiter is actuated at IO = 1A when Rf = 0.5Ω. The Rf resistor must be connected without fail, and its constant must be within the recommended operating range for current limiters. *5 Wiring need to be short to prevent carrying of the noise. The Hall input circuit is a comparator having a hysteresis of 20mV. It is recommended that the Hall input level be more than three times (60mVp-p) this hysteresis. *6 < PWM oscillation frequency setting capacitor > The oscillation frequency is 23kHz when CP = 200pF and 46kHz when CP = 100pF, and this serves as the PWM fundamental frequency. For the most part, the PWM frequency can be obtained from the following formula: f [kHz] ≈ (4.6×106) ÷C [pF] *7 This is the open collector type output, which outputs ''L'' during rotation. It is set to 'OFF' when a lock is detected. This output is left open when not in use. *8 This is a Hall element bias pin, that is, the 1.25V constant-voltage output pin. *9 Lowest speed setting pin for speed control. The minimum output duty setting is made with R3 and R4. The R4 is left open to stop operation at a duty ratio of 0%. No.A0082-5/9 LB11660RV Rotation Speed Control Chart Duty100% PWM DUTY(%) Minimum output duty Duty0% VPWML VTH (V) RMI VPWMH Rotation set to minimum speed VTH voltage RMI voltage CPWM PWM control variable speed Full speed 2.5V 0.5V 0V ON ON Duty OFF No.A0082-6/9 LB11660RV Internal Equivalent Circuit Diagram RD VCC Thermal protection circuit VM Constant voltage circuit Control circuit Delay circuit OUT2 1.25V HB HALL OUT1 PRE1 IN+ INAmplifier with hysteresis Charge/ discharge circuit GND CT RMI VTH Delay circuit Oscillation circuit Pre-Driver Pre-Driver PRE2 M 6VREG CPWM No.A0082-7/9 LB11660RV Sample Application Circuit 2 RL CM=4.7µF or higher *8 HB IN*5 IN+ VCC VM H RD 6VREG R3 OUT2 RMI OUT1 RTU PRE1 VTH TH PRE2 CPWM CP=200pF *f=23kHz CP=100pF *f=43kHz CT CT=0.47 to 1µF GND No.A0082-8/9 LB11660RV Specifications of any and all SANYO Semiconductor products described or contained herein stipulate the performance, characteristics, and functions of the described products in the independent state, and are not guarantees of the performance, characteristics, and functions of the described products as mounted in the customer's products or equipment. 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. SANYO Semiconductor Co., Ltd. strives to supply high-quality high-reliability products. However, any and all semiconductor products fail with some probability. It is possible that these probabilistic failures could give rise to accidents or events that could endanger human lives, that could give rise to smoke or fire, or that could cause damage to other property. When designing equipment, adopt safety measures so that these kinds of accidents or events cannot occur. Such measures include but are not limited to protective circuits and error prevention circuits for safe design, redundant design, and structural design. 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Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for volume production. SANYO Semiconductor 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 December, 2006. Specifications and information herein are subject to change without notice. PS No.A0082-9/9