LB8503V

LB8503V SANYO | Alldatasheet

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Specifications of any and all SANYO Semiconductor Co.,L td. 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 'sp r o d u c t so r equipment. Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to "standard application", intended for the use as general el ectronics equipment (home appliances, AV equipment, communication device, office equipment, industrial equipment etc.). The products mentioned herein shall not be intended for use for any "special application" (medica l equipment whose purpose is to sustain life, aerospace instrument, nuclear control device, burning appliances, t ransportation machine, traffic signal system, safety equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives in case of failure or malfunction of the product or may cause har m to human bodies, nor shall they grant any guarantee thereof. If you should intend to use our products for app lications outside the standard applications of our customer who is considering such use and/or outside the scope of our intended standard applications, please consult with us prior to the intended use. If there is n o consultation or inquiry before the intended use, our customer shall be solely responsible for the use. 31407 TI PC 20060207-S00003 No.A0366-1/20 LB8503V Overview The LB8503V is an improved functionality version of the LB8500 and LB8502 products that features the added functions listed below. The LB8503V supports both single-phase and three-phase applications. Added Functions

• Supports origin shifting in the speed control function
• Adds a dedicated pin for setting the soft start time This allows a longer start time to be set without reducing the response time when changing speed.
• FG output pin added Functions and Features
• Achieves linear speed control Applications can set the slope of the change in motor speed with change in the input duty.
• Minimized speed fluctuations in the presence of line or load variations
• Allows a minimum speed to be set
• Soft start function
• Settings using external capacitors and resistors (to support easier mass production of end products)
• Supports both PWM duty and analog voltage control inputs Monolithic Digital IC DC Fan Motor Speed Control IC

No.A0366-2/20 Specifications Absolute Maximum Ratings at Ta = 25°C Parameter Symbol Conditions Ratings Unit Supply voltage V CC max V CC pin 18 V Output current I O max E0 pin 3m A FG output pin output voltage V FG max FG OUT pin 18 V FG output pin output current I FG max FG OUT pin 10 mA Allowable power dissipation Pd max When mounted on a circuit board * 1 0.8 W Operating temperature Topr -30 to +95 °C Storage temperature Tstg -55 to +150 °C *1 Specified circuit board : 114.3 × 76.1 × 1.6mm3, glass epoxy. Allowable Operating Range at Ta = 25°C Parameter Symbol Conditions Ratings Unit Supply voltage range 1 V CC1 V CC pin 7.5 to 17 V Supply voltage range 2 V CC2 V CC pin, with VCC shorted to 6VREG 5.5 to 6.5 V Output current I O E0 pin 2.5 mA 6V constant voltage output current IREG -5 mA CTL pin voltage V CTL 0 to 6VREG V LIM pin voltage V LIM 0 to 6VREG V VC1 pin voltage V CI 0 to 6VREG V Electrical Characteristics at Ta = 25°C, VCC = 12V Ratings Parameter Symbol Conditions min typ max Unit Supply current I CC 5.5 6.5 mA 6V constant voltage output (VREG pin) Output voltage VREG 5.8 6.0 6.2 V Line regulation ΔVREG1 V CC = 8 to 17V 40 100 mV Load regulation ΔVREG2 I O = -5 to 5mA 10 100 mV Temperature coefficient ΔVREG3 Design target * 0 mV/ °C Integrating Amplifier Block (E01) Common-mode input voltage range VICM 2.0 VREG V High-level output voltage V OH(E01) IEO1 = -0.2mA VREG - 1.2 VREG - 0.8 V Low-level output voltage V OL(E01) IEO1 = 0.2mA 0.8 1.0 V Integrating Amplifier Block (E03) High-level output voltage V OH(E03) IEO1 = -0.2mA VREG - 1.2 VREG - 0.8 V Low-level output voltage V OL(E03) IEO1 = 0.2mA 0.8 1.0 V FGIN pin High-level input voltage VFGH 3.0 VREG V Low-level input voltage VFGL 0 1.5 V Input open voltage VFGO VREG - 0.5 VREG V Hysteresis VFGS 0.2 0.3 0.4 V High-level input current IFGH VFGIN = 6VREG -10 0 10 μA Low-level input current IFGL VFGIN = 0V -140 -110 μA FGOUT pin Output low saturation voltage VFG 0.2 0.3 V Output leakage current IFGL 10 μA Continued on next page.

No.A0366-3/20 Continued from preceding page. Ratings Parameter Symbol Conditions min typ max Unit RC pin High-level output voltage V OH(RC) 3.2 3.45 3.7 V Low-level output voltage V OL(RC) 0.8 0.95 1.05 V Clamp voltage V CLP(RC) 1.5 1.65 1.8 V CTL pin High-level input voltage VCTH 2.0 VREG V Low-level input voltage VCTL 0 1.0 V Input open voltage VCTO VREG - 0.5 VREG V High-level input current ICTH VFGIN = 6VREG -10 0 10 μA Low-level input current ICTL VFGIN = 0V -140 -110 μA C pin High-level input voltage V OH(C) VREG - 0.3 VREG - 0.1 V Low-level input voltage V OL(C) 1.8 2.0 2.2 V LIM pin Input bias current IB(LIM) -1 1 μA Common-mode input voltage range VILIM 2.0 VREG V SOFT pin Charge current IC(SOFT) 1.4 μA Operation voltage range VISOFT 2.0 VREG V VCI pin Input bias current IB(VCI) -1 1 μA Common-mode input voltage range VIVCI 2.0 VREG V VCO pin High-level output voltage V OH(VCO) VREG - 0.2 V Low-level output voltage V OL(VCO) 2.0 V * The design specification items are design guarantees and are not measured. Package Dimensions unit : mm (typ) 3178B 5.2 4.4 6.4 0.22 0.65 (0.33) 916 0.5 0.15 1.5max 0.1 (1.3) SANYO : SSOP16(225mil) 0.8 0.4 0.2 0.6 1.0 – 20 806040200 100 Ambient temperature, Ta – °C Allowable power dissipation, Pd max – W Pd max – Ta Specified circuit board : 114.3×76.2×1.6mm3 glass epoxy board

No.A0366-4/20 Pin Assignment Pin Functions Pin No. Pin Description RC 1 One-shot multivibrator pulse width setting. Connect a re sistor between this pin and VREG, and a capacitor between this pin and ground. SOFT 2 Soft start time setting. Connect a capacitor between this pin and VREG. VREG 3 6V regulator output. Connect a capacitor between this pin and ground for stabilization. VCC 4 Power supply. Connect a capacitor between this pin and ground for stabilization. CVI 5 Control voltage input CVO 6 Duty pulse signal smoothed voltage output CTL 7 Duty pulse signal input. The speed is controlled by the duty of this pulse signal. C 8 Duty pulse signal smoothing. Connec t a capacitor between this pin and VREG. LIM 9 Minimum speed setting. Normally, the 6V regulator level is resistor divided to set this pin's input level. FGIN 10 FG pulse input FGOUT 11 FG pulse output GND 12 Grand pin NC 13 NC pin EI 14 One-shot multivibrator output and integrating amplifier input. A capacitor must be connected between this pin and EO for this integration. EO1 15 Integrating amplifier output. (For use with an accelerati ng driver IC if the command voltage becomes low (single-phase systems).) EO3 16 Integrating amplifier inverting output. (For use with an accelerating driver IC if the command voltage becomes high (three-phase systems).) LB8503V Top view 543 1 RC VREG V CC CTL C 16 14 12 11 10 EO3 EO1 NC GND FGIN 6 7 8 15 13 9 LIM FGOUT CVOCVI EI SOFT

No.A0366-5/20 Block Diagrams and Application Examples Combination with an accelerating driver IC when the command voltage goes low (single-phase systems) VREG LB8503V CTL VREF EDGE FG 6VREG CTL signal VCC 12V CVI SOFT LIM RC C CVO CTL FGIN FGOUT EO1 EI GND FG VTH VREG EO3 I LB01769 VREG One-shot multivibrator

No.A0366-6/20 Combination with an accelerating driver IC when the command voltage goes high (three-phase systems) VREG CTL VREF EDGE FG 6VREG CTL signal VCC 12V CVI SOFT LIM RC C CVO CTL FGIN FGOUT EO1 EI GND FG VCTL VREG EO3 VREG LB8503V I LB01770 One-shot multivibrator

No.A0366-7/20 Speed Control Diagrams Startup Timing (soft start) Determined by the LIM pin voltage For a larger RC time constant For a smaller RC time constant The slope is determined by the external constant connected to the RC pin. (RPM) Speed Minimum speed Low← CTL pin (PWM DUTY) →High High← EO1 pin voltage (V) →Low Low← EO3 pin voltage (V) →High 0% 100% Variable speed Full speed 6VREG Low on duty High on duty Set minimum speed LIM voltage CTL pin EO pin EO1 voltage CTL pin Stop VCC pin SOFT pin Full speed Stop Full speed Soft start The slope can be changed with the capacitor connected to the C pin (A larger capacitor increases the slo pe.)

No.A0366-8/20 Supplementary Operational Descriptions The LB8503V accepts a duty pulse input and an FG signal from the driver IC, and generates the driver IC control voltage so that the FG period (motor speed) becomes proportional to the control voltage. As shown in the figure below, the LB8503V generates a pulse signal from edges on the FG signal and then generates a pulse width waveform determined by the RC time constant in a one-shot multivibrator. The LB8503V then integrates that pulse waveform to create the output driver IC control voltage (a DC voltage). It is also possible to change the slope of the VCTL/speed relationship as shown in the speed control diagram in the previous section by changing the pulse width with the RC time constant. Note, however, that since pulses determined by this RC time constant are used, variation in the RC components will appear as speed control errors. LB8503V Driver IC FGIN FG VTH CTL CTL signal Closed feedback loop FG EDGE pulse RC pin One-shot multivibrator TRC(s) = 0.85RC Slope due to the RC time constant EO

No.A0366-9/20 Pin Setting Procedures (Provided for reference purposes) [RC pin] The slope in the speed control diagram is determined by the RC pin time constant. CTL Duty(%) (RPM) 0% 100% Motor full speed I LB01771 1. Determine the FG signal frequency (f FG (Hz)) at the motor's highest speed. (When 2 FG pulses are creat ed on each motor revolution.) 2. Determine the time constant for the RC pin. (Let DUTY be the control duty at the highest motor speed. For example, 100% = 1.0, 60% = 0.6) 3. Determine the resistor and capacitor values The range of capacitors that can be used is from 0.01 to 0.015 µF due to the charge capabilities of the RC pin circuit. Therefore, an appropriate re sistor value can be determined from either (3) or (4) below from the result obtained in step 2 above. Note that the temperature characteristics of the curve are determined by the temperature characteristics of the capacitor connected to the RC pin. A capacitor with excellent temperature characteristics must be used to minimize motor speed variation with temperature.

No.A0366-10/20 [CVO and CVI Pins] These pins determine the origin of the slope. (To set the origin to 0% at 0 rpm, short CVO to CVI.) 1. X axis shift (Resistor dividing the CVO to ground potential) CTL Duty(%) (RPM) 0% 100% Motor full speed X axis shift To shift the characteristics from a 0% = 0 rpm origin to a situation where the speed at a duty of 30% is shifted to 0%: First, determine the required CVI pin input voltage at 0%. Next, when CVO is 6V, determine the resistor values for the resistor divider between CVO and ground such that the midpoint becomes 4.8V. CVO - CVI : CVI - ground = 1.2V : 4.8V = a ratio of 1 : 4. From the above, the desired resistor values will be 20kΩ between CVO and CVI and 80kΩ between CVI and ground. Note that the slope will change. (In this case, since the resistor ratio is 1:4, the result will be 4/5 of (or 0.8 times) the original slope.) If required, the RC pin resistor value must be changed to correct the slope. ILB01773 CTL VREF CVI SOFT LIM C CVO CTL

No.A0366-11/20 2. Y axis shift (Resistor dividing the CVO to VCC potential) CTL Duty(%) (RPM) 0% 100% Motor full speed X axis shift To shift the characteristics from a 0% = 0 rpm origin to a situation where the speed is 0 rpm at a duty of 30%: First, determine the required CVO pin input voltage at 0%. Determine the resistor values such that at CVO = 5 V, CVI becomes 6V. CVO - CVI : CVI - VCC = 1 V : 6V = a ratio of 1:6. From the above, the desired resistor values will be 20kΩ between CVO and CVI and 80kΩ between CVI and ground. (Due to the current capability of the CVO pin, the total resistor value must exceed 100kΩ.) Note that the slope will change. (In this case, since the resistor ratio is 1:6, the result will be 6/7 of (or 0.86 times) the original slope.) If required, the RC pin resistor value must be changed to correct the slope. ILB01775 VCC CTL VREF CVI SOFT LIM C CVO CTL

No.A0366-12/20 [LIM Pin] The minimum speed is determined by the LIM pin voltage. CVO pin voltage (V) 10000 8000 6000 4000 2000 6V 2V Set minimum speed CTL Duty (%) (RPM) 0% 100% Motor full speed 1. Determine the ratio of the required minimum speed and the maximum speed. In the example in the figure above, Ra = minimum speed/maximum speed = 3000/10000 = 0.3 2. Determine the product of the duty that produces the maximum speed and the value from equation 1. For example, Ca = maximum speed duty × Ra = 0.8 × 0.3 = 0.24 3. Determine the required LIM pin voltage For example, LIM = 6 - (4 × Ca) = 6 - (4 × 0.24) ≈ 5V 4. Generate the LIM voltage by resistor dividing the 6 V regulator voltage. For example, the resistor ratio to create a 5V level will be 1:5. Thus the resistor values will be 10k Ω between 6VREG and LIM and 51kΩ between LIM and ground. ILB01777 6VREG VREF CVI SOFT LIM

No.A0366-13/20 [C Pin] Since a capacitor that can smooth the pin voltage is connected to the C pin, if the CTL pin input signal frequency is f (Hz), then the capacitor must meet the following condition. (Here, R is the IC internal resistance of 180Ω (typical).) 1/f = t < RC Note that the larger the capacitor, the slower its response to changes in the input signal will be. C pin VREF circuit 180kΩ CTL circuit CTL pin CTL pin input inverted waveform (the frequency is the same) A capacitor that can smooth the pin voltage is connected here. 1/f = t < CR 6VREG

No.A0366-14/20 Application Example 2 [Setting the minimum speed for an origin of 0% = 0 rpm] PWM Duty(%) (RPM) 0% 100% Motor full speed Set minimum speed VREG LB8503V CTL VREF EDGE FG 6VREG CTL signal VCC 12V CVI SOFT LIM RC C CVO CTL FGIN FGOUT EO1 EI GND FG VTH VREG EO3 VREG One-shot multivibrator When the speed control diagram origin is 0% = 0 rpm, the CVO pin is connected to the CVI pin. If the minimum speed is not set, connect the LIM pin to the 6VREG pin.

No.A0366-15/20 Application Example 3 [Origin shift in the Y direction (the motor turns at 0%)] PWM Duty(%) (RPM) 0% 100% Motor full speed VREG LB8503V CTL VREF EDGE FG 6VREG CTL signal VCC 12V CVI SOFT LIM RC C CVO CTL FGIN FGOUT EO1 EI GND FG VTH VREG EO3 VREG One-shot multivibrator When the speed control diagram origin is set so the motor turns at 0%, the CVO pin to ground potential difference is resistor divided and the midpoint is input to the CVI pin. The speed at 0% can be changed with the resistor ratio.

No.A0366-16/20 Application Example 4 [Origin shift in the X axis direction (The motor turns at a duty of 10% or higher) plus a minimum speed setting] PWM Duty(%) (RPM) 0% 100% Motor full speed VREG LB8503V CTL One-shot multivibrator VREF EDGE FG R4R5 6VREG CTL signal VCC 12V CVI SOFT LIM RC C CVO CTL FGIN FGOUT EO1 EI GND FG VTH VREG EO3 VREG When the origin in the speed control diagram is set so that the motor starts turning when the duty is above 0%. the potential difference between the CVO pin and VCC is resistor divided, and that divided level is input to the CVI pin. The duty at which rotation starts can be changed by changing the resistor ratio. Note that the total value of the resistors R4 and R5 must exceed 100kΩ.

No.A0366-17/20 Application Example 5 [DC Voltage Speed Control] CV1 pin voltage (V) 6V 2 V Set minimum speed (RPM) Motor full speed VREG LB8503V CTL One-shot multivibrator VREF EDGE FG 6VREG DC voltage VCC 12V CVI SOFT LIM RC C CVO CTL FGIN FGOUT EO1 EI GND FG VTH VREG EO3 VREG When the motor speed is controlled by a DC voltage, that voltage must be in the range from 2V to 6VREG. Note that the motor stops when the control voltage is at 6VREG, and the motor speed increases as the voltage falls.

No.A0366-18/20 Application Example 6 [Fixed Speed + Soft Start] CTL signal (PWM duty) C pin voltage (RPM) Motor full speed VREG LB8503V CTL VREF EDGE FG 6VREG VCC 12V CVI SOFT LIM RC C CVO CTL FGIN FGOUT EO1 EI GND FG VTH VREG EO3 VREG One-shot multivibrator With this circuit, the motor speed remains constant even if there are fluctuations in the supply voltage or static voltage. It is also possible to input a fixed-duty signal to the CTL pin signal input as an input signal for which soft start is enabled at startup.

No.A0366-19/20 Application Example 7 [Used in Combination with the LB11660FV] VREG LB8503V LB11660FV/RV CTL VREF EDGE FG 6VREG CTL signal VCC 12V CVI SOFT LIM RC C CVO CTL FGIN FGOUT EO1 EI GND FG VTH VREG EO3 VREG One-shot multivibrator In this circuit, the dynamic range of the LB8503V EO pin (the range from the amplifier block output high to output low levels) must be wider than the dynamic range (from the high to low levels of the PWM signal) of VTH pin of driver IC with which this IC is combined. However, since the LB11660FV PWM low-level voltage is lower than the LB8503V amplifier output low-level voltage, it must be resistor divided.

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