FD0250F

FD0250F FEELING | Alldatasheet

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Features

/circle6 Motor driver with high sensitivity Hall-effect sensor /circle6 H-Bridge MOS driver /circle6 Lock-shutdown protection & auto-restart function /circle6 Built-in Alarm Signal Output (RD) /circle6 “Soft-switch” phase-switching technique to reduce vibration and acoustic noise /circle6 Thermal shutdown protection (TSD) /circle6 PWM mode variable speed control /circle6 Available in TS826 package /circle6 For 5V DC motor / FAN systems General Description FD0250f is a single-phase full-wave motor driver with embedded Hall-effect sensor. It integrates a H-bridge MOS driver, a high sensitivity Hall-effect sensor, an event timer for locked rotor detection, and the variable speed control function with the alarm signal output logic into the ultra-small TS826 package, which make the motors’ PCB (printed circuit board) design easier and the fabrication of small-size DC motors or FANs as simple as possible. The external system could read the alarm signal of rotation from RD signal of FD0250f. For safety, Lock-shutdown function turns the IC’s internal driver off to avoid over-heating when the rotor is locked, and the IC will try to re-start the motor after the shutdown interval. Thermal-shutdown protection (TSD) ensures the internal driver of IC is operating under the safe operating temperature range. All the protection mechanisms mentioned above combine to provide a complete protecting scenario in the motor system and avoid any possible damages and guarantee under a correct and safe operation. Block Diagram Figure.1 Halogen Free

Rev1.2 June. 16, 2009 P.2 FEELING TECHNOLOGY Pin Connection Figure.2 Pin Descriptions Legend: I=input, O=output, I/O=input/output, P=power supply, G=ground Functional Descriptions Refer to the block diagram (Figure.1), FD0250f is composed of the following building blocks: /circle6 Bias generator The bias generator provides precise, temperature- and process-insensitive bias references for the analog blocks. These references guarantee proper operation of the IC under all conditions specified in this specification. /circle6 Oscillator The built-in oscillator provides the clock signal for the digital control logic. /circle6 Power On Reset Used to detect the power-up ramp and reset the digital circuits. /circle6 Chopper Amplifier To achieve a higher magnetic sensitivity the chopper amplifier structure is adopted in this design. Use of this structure dynamically removes both the offset and flicker noise at the same time. /circle6 Digital Control Logic /head2right Hall sensor part – generates magnetic pole signals from the Hall-effect sensor. /head2right Driver part – generates switching signals to the H-Bridge MOS driver. /head2right Timer part – generates an interval of time when rotor locked event is occurred. /head2right Signal part – generates a alarm signal (RD) output. Name I/O FD0250f Description RD O 1 Alarm Signal Output VSS G 2 Ground NO O 3 Driver Output 1 SO O 4 Driver Output 2 VCC P 5 Positive Power Supply VDD P 6 Positive Power Supply FD0250f VCC VDD SO 1 2 3 6 5 4 NO VSS RD ch g

Rev1.2 June. 16, 2009 P.3 FEELING TECHNOLOGY Absolute Maximum Ratings Parameter Symbol Conditions Values Unit min. typ. max. Operating Temperature T OP - -20 105 ℃ Storage Temperature T ST - -40 150 ℃ DC Supply Voltage(V DD , RD) V DD - 6.5 V PWM Voltage Range PWM HIGH - 6.5 V PWM LOW - 0 V Supply Current I DD - 3 mA Continuous Current I CONT - 500 mA Hold current I HOLD - 800 mA RD sink current I SINK - 25 mA Junction Temperature T J - 170 ℃ Maximum Power Dissipation PDTS826 - 520 mW Thermal resistance (note1) θja TS826 0.278 ℃/mW Thermal resistance (note1) θjc TS826 0.018 ℃/mW Magnetic Flux Density B Unlimited Gauss IR-Reflow Lead Temperature T P 10sec 260 ℃ Note1: device mounted with copper area of approximately 10mm 2, 1ØZ, no air flow. (room temperature: 25 ℃) Figure.3 Figure.4 255 ± 5 oC 10 ± 1 sec 150 ± 10 oC 90 ± 30 sec 2~5 oC /sec 2~5 oC /sec SECOND IR-ReFlow Soldering Condition ROOM TEMP 0 25 50 75 100 125 150 340 430 520 Pd (mW) Temp. ( ) o C TS826 Power Dissipation Curve 175 250 160 105 o C 170 o C

Rev1.2 June. 16, 2009 P.4 FEELING TECHNOLOGY Recommended Operating Conditions Parameter Conditions Values Unit min. typ. max. Supply Voltage (V DD ) - 1.8 5.5 V Ambient Temperature (T a) - -20 105 ℃ Electrical Characteristics VDD =5.0V, T a=25 ℃℃℃℃ (unless otherwise specified) Parameter Conditions Values Unit min. typ. max. Average Supply Current(no load) 3 mA Output Saturation Voltage(RD) I out = 5mA 0.4 V Output Leakage Current(RD) V out =5V 1 µA On resistance(Rpmos+Rnmos) 0.8 Ω Thermal Shutdown Threshold 150 ℃ Locked Rotor Period(T ON ) 0.4 s Locked Rotor Period(T OFF ) 2.8 s Magnetic Characteristics Parameter Conditions Values Unit min. typ. max. Operate Points( B OP ) 15 G Release Points( B RP ) -15 G Hysteresis( B HYS ) 30 G Hysteresis Characteristics Figure.5 NO SO V Brp Bop B Bop Brp V B

Rev1.2 June. 16, 2009 P.5 FEELING TECHNOLOGY R DSON vs. T A 0.2 0.4 0.6 0.8 1.2 -20 -10 0 10 20 30 40 50 60 70 80 90 100 110 TA ( oC) RDS ON (ohms) Vdd=1.8V Vdd=3V Vdd=5.5V Magnetic parameters vs. T A -30 -20 -10 -20 -10 0 10 20 30 40 50 60 70 80 90 100 110 TA ( oC) M ag netic field(G au ss) Bop, Vdd=1.8V Brp, Vdd=1.8V Bhyst, Vdd=1.8V Bop, Vdd=5.5V Brp, Vdd=5.5V Bhyst, dd=5.5V RDSON vs. V DD 0.2 0.4 0.6 0.8 1.2 0 1 2 3 4 5 6 V DD (volts) R D S ON ( o h m s) Ta = -20 Ta = 25 Ta = 105 IDD vs T A 0.5 1.5 2.5 3.5 4.5 -20 -10 0 10 20 30 40 50 60 70 80 90 100 110 TA ( oC) ID D (mA ) Vdd=1.8V Vdd=3V Vdd=5.5V Magnetic parameters vs. V DD -30 -20 -10 0 1 2 3 4 5 6 V DD (volts) Magn etic field (G auss) Bop, Ta=25 Brp, Ta=25 Bhyst, Ta=25 IDD vs V DD 0.5 1.5 2.5 3.5 4.5 0 1 2 3 4 5 6 V DD (volts) IDD (m A ) Ta = -20 Ta = 25 Ta = 105 Performance Graphs Figure.6 Figure.7 Figure.8 Figure.9 Figure.10 Figure.11

Rev1.2 June. 16, 2009 P.6 FEELING TECHNOLOGY Application Circuit Reference Figure.12 Note : 1. D1: better use schottky diodes with lower Vth to improve low-voltage operation. 2. place the capacitor C1 as close to the IC as possible. The IC laying aside mode declaration is as follows: Figure.13 Soldering (Pure Tin) Width (d3) PCB PCB PCB Width (d2) Rotor Height (d1) Vertical Height (d) Rotor Magnet IC INK View Motor Coil VCC GND RD IC1 FD0250f/TS826 RD 1 VSS 2 NO 3 SO 4 VCC 5 VDD 6 CN1 Input CON

Rev1.2 June. 16, 2009 P.7 FEELING TECHNOLOGY FD0250f Output Waveforms Description Figure.14 VDD SO NO TON Shutdown Time Rotor Stop Normal Operation Time Iin RD Re- Start Time TOFF Rotor Locked Lock Release

Rev1.2 June. 16, 2009 P.8 FEELING TECHNOLOGY FD0250f Output Waveforms Measurements FD025 0f 5.1V Soft-Switching CH1: NO Output CH2: SO Output CH4: Input Current Peak Current ( ~ 492 mA) Soft-Switching Time ( ~ 186 µs) Figure.1 5 FD025 0f 5.1V Rotor Locked Re-start Operation CH1: NO Output CH2: SO Output CH3: RD Output CH4: Input Current Off Time ( ~ 2.86 s) On Time ( ~ 0.4 s) Figure. 16

Rev1.2 June. 16, 2009 P.9 FEELING TECHNOLOGY 1 2 3 b E D e C D Package Dimension (Unit: mm) TS826 (Halogen Free) Symbols Dimension In Millimeters Min Nom Max A2 0.700 0.750 0.775 b 0.350 - 0.500 c 0.100 - 0.200 D 2.800 2.900 3.100 E 3.700 3.800 3.900 E1 1.500 1.600 1.700 e 0.950 BSC e1 1.900 BSC Θ1 4˚ 10˚ 12˚ Sensor location 0.86mm 1.02mm Top view: marking side

Rev1.2 June. 16, 2009 P.10 FEELING TECHNOLOGY TS826 Top view: marking side

Rev1.2 June. 16, 2009 P.11 FEELING TECHNOLOGY IC Pin Connection Marking Distinguish Order Information Part Number Package MOQ Marking MSL FD0250fR-G1 TS826 3,500 EA / REEL chXXXXg 3