F2867

F2867 UTC | Alldatasheet

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UNISONIC TECHNOLOGIES CO., LTD F2867 LINEAR INTEGRATED CIRCUIT www.unisonic.com.tw 1 of 6 Copyright © 2019 Unisonic Technologies Co., Ltd QW-R109-038.C VARIABLE SPEED SINGLE-PHASE FULL-WAVE PRE-DRIVER  DESCRIPTION The UTC F2867 is a single-phase bipolar variable speed driving motor pre-driver that works with external PWM signal. A highly efficient, highly silent and low power consumption motor driver circuit can be achieved with a few external parts. This product is optimal for driving large scale fan motors requiring large air flow and large current such as servers and consumer appliances.  FEATURES * Pre-driver for single-phase full-wave drive Low-saturation drive using external PMOS-NMOS enables high-efficiency low power-consumption drive. * External PWM input enabling variable speed control Separately-excited upper direct PWM (f=30kHz) control method enabling highly silent speed control. * Current limiting circuit incorporated Chopper type current limit at start. * Reactive current cut circuit incorporated Reactive current before phase change is cut to enable silent and low power-consumption drive. * Minimum speed setting pin Minimum speed can be set by set with external resistor. * Soft start setting pin * Lock protection and automatic reset functions incorporated * FG (rotation speed detection) output * Thermal shutdown circuit incorporated  ORDERING INFORMATION Ordering Number Lead Free Halogen Free Package Packing F2867L-R16-R F2867G-R16-R SSOP-16 Tape Reel F2867L-P16-R F2867G-P16-R TSSOP-16 Tape Reel

F2867 LINEAR INTEGRATED CIRCUIT UNISONIC TECHNOLOGIES CO., LTD 2 of 6 www.unisonic.com.tw Q W - R 1 0 9 - 0 3 8 . C  MARKING  PIN CONFIGURATION  PIN DESCRIPTION PIN NO. PIN NAME DESCRIPTION

1 OUT2P Output2 PMOS drive

2 OUT2N Output2 NMOS drive

3 V CC Power supply

4 SENSE Current limiting detection pin

5 RMI Minimum speed setting pin

6 V TH Speed control pin

7 CPWM Pin to connect the capacitor for generation of the PWM basic frequency

8 FG Rotation speed detection pin

9 IN - Hall signal input

10 IN + Hall signal input

11 CT Pin to connect the lock detection capacitor

12 S-S Pin to connect the soft-start setting capacitor

13 5VREG 5V reference voltage

14 SGND Power-GND

15 OUT1N Output1 NMOS drive

16 OUT1P Output1 PMOS drive

F2867 LINEAR INTEGRATED CIRCUIT UNISONIC TECHNOLOGIES CO., LTD 3 of 6 www.unisonic.com.tw Q W - R 1 0 9 - 0 3 8 . C  BLOCK DIAGRAM

F2867 LINEAR INTEGRATED CIRCUIT UNISONIC TECHNOLOGIES CO., LTD 4 of 6 www.unisonic.com.tw Q W - R 1 0 9 - 0 3 8 . C  ABSOLUTE MAXIMUM RATING (TA=25°C unless otherwise specified) PARAMETER SYMBOL RATINGS UNIT VCC Pin Maximum Supply Voltage V CC 18 V OUTN Pin Maximum Output Current I OUTN 20 mA OUTP Pin Maximum Sink Current I OUTP 20 mA OUT Pin Output Withstand Voltage V OUT 18 V VTH, RMI Pins Withstand Voltage V VTH, VRMI 7 V S-S Pin Withstand Voltage VS-S 7 V FG Output Pin Withstand Voltage V FG 19 V FG Pin Maximum Output Current I FG 10 mA 5VREG Pin Maximum Output Current I5V REG 20 mA Allowable Power Dissipation (with specified substrate (Note 2)) P D 800 mW Operating Temperature (Note 3) T OPR -30 ~ +95 °C Storage Temperature TSTG -55 ~ +150 °C Notes: 1. Absolute maximum ratings are those values beyond which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied. 3. TJ max=125°C must not be exceeded.  RECOMMENDED OPERATING CONDITIONS (TA=25°C unless otherwise specified) PARAMETER SYMBOL RATINGS UNIT VCC Supply Voltage VCC 5.5 ~ 16 V VTH, RMI Input Voltage Range V TH, RMI 0 ~ 5 V Hall Input Common-Phase Input Voltage Range V ICM 0.2 ~ 3 V  ELECTRICAL CHARACTERISTICS (VCC=12V, TA=25°C unless otherwise specified) PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT 5VREG Voltage 5V REG I5VREG = 5mA 4.80 4.95 5.10 V Current Limiting Voltage V LIM 185 200 215 mV CPWM Pin “h” Level Voltage V CPWM_H 2.8 3.0 3.2 V CPWM Pin “L” Level Voltage V CPWM_L 0.9 1.1 1.3 V CPWM Pin Charge Current I CPWM1 V CPWM=0.5V 24 30 36 μA CPWM Pin Discharge Current I CPWM2 V CPWM=3.5V 21 27 33 μA CPWM Oscillation Frequency F PWM C=220PF 30 kHz CT Pin “H” Level Voltage V CTH 2.8 3.0 3.2 V CT Pin “L” Level Voltage V CTL 0.9 1.1 1.3 V CT Pin Charge Current I CT1 V CT=0.5V 1.6 2.0 2.5 μA CT Pin Discharge Current I CT2 V CT=3.5V 0.16 0.20 0.25 μA CT Pin Charge/Discharge Ratio RCT I CT1/ICT2 8 10 12 times S-S Pin Discharge Current I S-S V S-S=1V 0.4 0.5 0.6 μA OUTN Output H-level Voltage V ONH I O=10mA VCC-0.85 V CC-1.00 V OUTN Output L-level Voltage V ONL I O=10mA 0.9 1.1 V OUTP Output L-level Voltage V OPL I O=10mA 0.5 0.65 V Hall Input Sensitivity V HN IN+, IN- differential voltage (including offset and hysteresis) ±10 ±20 mV FG Output L-level Voltage V FGL I FG=5mA 0.15 0.30 V FG Pin Leakage Current I FGL V FG=19V 20 μA VTH/RMI Pin Bias Current I VTH/IRMI CPWM=V TH/RMI=2V 0.2 μA

F2867 LINEAR INTEGRATED CIRCUIT UNISONIC TECHNOLOGIES CO., LTD 5 of 6 www.unisonic.com.tw Q W - R 1 0 9 - 0 3 8 . C  TYPICAL APPLICATION CIRCUIT Notes: *1. Power−GND wiring SGND is connected to the control circuit power supply system. *2. Power stabilization capacitor For the power stabilization capacitor on the signal side, use the capacitance of 1μF or more. Connect VCC and GND with a thick and shortest pattern. *3. Power stabilization capacitor on the power side For the power stabilization capacitor on the power side, use the capacitance of 1μF or more. Connect the power supply on the power side and GND with a thick and shortest pattern. *4. IN+, IN- pins Hall signal input pin. Wiring should be short to prevent carrying of noise. If noise is carried, insert the capacitor between IN+ and IN- pins. The Hall input circuit functions as a comparator with hysteresis (15mV). This also has a soft switch section with ±30mV (input signal differential voltage). It is also recommended that the Hall input level is minimum 100mV (p-p).

F2867 LINEAR INTEGRATED CIRCUIT UNISONIC TECHNOLOGIES CO., LTD 6 of 6 www.unisonic.com.tw Q W - R 1 0 9 - 0 3 8 . C  TYPICAL APPLICATION CIRCUIT (Cont.) Notes: *5. CPWM pin Pin to connect the capacitor for generation of the PWM basic frequency The use of CP=220pF causes oscillation at f=30kHz, which is the basic frequency of PWM. As this is used also for the current limiting canceling signal, be sure to connect the capacitor even when the speed control is not made. *6. RMI pin Minimum speed setting pin. Perform pull-up with 5VREG when this pin is not to be used. If the IC power supply is likely to be turned OFF first when the pin is used with external power supply, be sure to insert the current limiting resistor to prevent inflow of large current. (The same applies to the V TH pin.) *7. V TH pin Speed control pin. Connect this pin to GND when it is not used (at full speed). For the control method, refer to the timing chart. For control with pulse input, insert the current lim iting resistor and use the pin with the frequency of 20k~100kHz (20kHz~50kHz recommended). * 8 . S E N S E p i n Current limiting detection pin. When the pin voltage exceeds 0.2V, the current is limited and the operation enters the lower regeneration mode. Connect this pin to GND when it is not to be used. * 9 . F G p i n Rotation speed detection pin. This is an open collector output, which can detect the rotation speed from the FG output according to the phase changeover. Keep this pin open when it is not to be used. *10. CT pin Pin to connect the lock detection capacitor. The constant-current charge and discharge circuits incorporated cause locking when the pin voltage becomes 3.0V and unlocking when it is 1.1V. Connect the pin to GND when it is not to be used (locking not necessary). *11. S-S pin Pin to connect the soft-start setting capacitor. Connect the capacitor between 5VREG and S-S pin. This pin enables setting of the soft start time according to the capacity of the capacitor. See the timing char. Connect the pin to GND when it is not to be used. UTC 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 UTC products described or contained herein. UTC products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. UTC reserves the right to make changes to information published in this document, including without limitation specifications and product descriptions, at any time and without notice. This document supersedes and replaces all information supplied prior to the publication hereof.