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LB1913 Dataheets PDF



Part Number LB1913
Manufacturers Sanyo
Logo Sanyo
Description FDD Spindle Motor Driver
Datasheet LB1913 DatasheetLB1913 Datasheet (PDF)

Ordering number : EN5503 Monolithic Integrated IC LB1913 FDD Spindle Motor Driver Overview The LB1913 is a three-phase disk drive motor driver IC that is optimal for use as a 3.5-inch floppy disk drive spindle motor driver. Package Dimensions unit: mm 3222-HSOP28 [LB1913] Functions and Features • • • • • • • • Three-phase full-wave linear drive On-chip digital speed control Start and stop circuits (active low) Speed switching High: 300 rpm, Low: 360 rpm Current limiter circuit Index compara.

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Ordering number : EN5503 Monolithic Integrated IC LB1913 FDD Spindle Motor Driver Overview The LB1913 is a three-phase disk drive motor driver IC that is optimal for use as a 3.5-inch floppy disk drive spindle motor driver. Package Dimensions unit: mm 3222-HSOP28 [LB1913] Functions and Features • • • • • • • • Three-phase full-wave linear drive On-chip digital speed control Start and stop circuits (active low) Speed switching High: 300 rpm, Low: 360 rpm Current limiter circuit Index comparator circuit Index delay circuit Thermal protection circuit SANYO: HSOP28 Specifications Absolute Maximum Ratings at Ta = 25°C Parameter Maximum supply voltage Maximum output current Maximum steady-state output current Allowable power dissipation Operating temperature Storage temperature Symbol VCC max IO max1 IO max2 Pd max Topr Tstg Independent IC t ≤ 0.5 s Conditions Ratings 7.0 1.0 0.7 0.5 –20 to +80 –40 to +150 Unit V A A W °C °C Allowable Operating Ranges at Ta = 25°C Parameter Recommended supply voltage Symbol VCC Conditions Ratings 4.2 to 6.5 Unit V SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN 83196HA (0T) No. 5503-1/6 LB1913 Electrical Characteristics at Ta = 25°C, VCC = 5.0 V Parameter Symbol ICCO ICC ISL VSLL VSLH IS/S VS/SL VS/SH IHB Vh Vdif VH IHL Vsat IOL Vlim GC ∆GC I+ I– I+/I– IDSC ∆Vsh N FD FOSC VIDL IIDL GFG VFGO VFGB ∆VSH ∆VID VID TSD ∆TSD * * * * 1.0 150 180 40 2.2 2.5 50 20 VCC–1.0 * 48 ±10 2.8 * * IO = 2 mA * 50 1041.5 1.1 1.1 0.4 ±10 MHz MHz V µA dB mV V mV mV V °C °C 9 –9 0.8 0.27 0.3 –7 ±1 14 –14 1.0 19 –19 1.2 1.0 µA mV IH = 5 mA S/S = 5 V IO = 0.7 A, sink + source 1.3 1.5 50 0.8 ±10 1.8 1.0 0.33 0 3.5 Conditions S/S = 5 V (standby mode) S/S = 0 V (normal mode) VSL = 0V 0 3.5 180 12 Ratings min typ max 10 18 10 1.0 VCC 270 0.8 VCC 10 VCC–1.0 200 Unit µA mA µA V V µA V V µA V mVp-p V µA V mA V dB dB µA µA Current drain SL bias current SL input low-level voltage SL input high-level voltage S/S bias current S/S low-level voltage S/S high-level voltage Hall amplifier input bias current Common-mode input voltage range Differential-mode input voltage range Hall bias output voltage Leakage current Output saturation voltage Output leakage current Current limiter Control amplifier voltage gain Interphase voltage gain difference V/I converter source current V/I converter sink current V/I converter current ratio DSC buffer input current FG Schmitt hysteresis Number of speed discriminator counts Discriminator operating frequency Oscillator frequency range Index output low-level voltage Index output leakage current FG amplifier voltage gain FG amplifier input offset FG amplifier internal reference voltage Schmitt hysteresis Index input hysteresis Index common-mode input voltage range Thermal shutdown circuit operating temperature Hysteresis Note: * These items are design target values and are not tested. Truth Table Source → Sink 1 2 3 4 5 6 V phase → W phase V phase → U phase W phase → U phase W phase → V phase U phase → V phase U phase → W phase Hall input U H L L L H H V H H H L L L W L L H H H L A “high-level” (H) Hall amplifier input means: UIN+ > UIN– VIN+ > VIN– WIN+ > WIN– No. 5503-2/6 LB1913 Pin Assignment Pin Functions Pin no. 18 19 Pin UIN+ UIN– VIN+ VIN– WIN+ WIN– • W-phase Hall element input Pin voltage 1.5 V min VCC–1.0 V max • V-phase Hall element input Equivalent circuit Function • U-phase Hall element input 20 21 22 23 24 HB 0.8 V typ (IH = 5 mA) • Minus-side pin for applying the Hall bias current This pin goes to the open state in the stopped state and the Hall bias is cut off. 25 26 27 FGIN+ FGIN– FGOUT • FG amplifier plus input A reference voltage of 2.5 V is generated by the IC internally. • FG amplifier minus input • FG amplifier output pin 28 1 I+ I– • Index input Continued on next page No. 5503-3/6 LB1913 Continued from preceding page Pin no. 2 Pin ID Pin voltage Low: 0.4 V max High: 4.5 V min Equivalent circuit • Index output Function 3 CD • Connection for external RC time constant circuit. 4 SS Low: 0.8 V max High: 3.5 V min • Start/stop switching input This is an active-low input. 5 SL Low: 1.0 V max High: 3.5 V min • Speed switching input 6 CLK Low: 1.0 V max High: VCC–1.0 V min • Reference clock input Use a clock rate of 1 MHz for 300 and 360 rpm speeds. 7 GND • Ground connection Connect this pin, pin 14, and the frame to ground. 8 VCC • Power supply Provide a well-stabilized power supply so that ripple and noise do not enter the LB1913 from this pin. 9 Rf • Used for output current detection. The output current is converted to a voltage and detected by connecting a resistor (Rf) between this pin and VCC. The current limiter operates by detecting the voltage on this pin. Continued on next page No. 5503-4/6 LB1913 Continued from preceding page Pin no. 10 Pin DO Pin voltage Equivalent circuit • Speed discriminator Function 11 FC • Frequ.


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