Monolithic Integrated LB1913 Spindle Motor Driver Overv

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Monolithic Integrated LB1913 Spindle Motor Driver Overv

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Ordering number EN5503
Monolithic Integrated
LB1913
Spindle Motor Driver
Overview
LB1913 three-phase disk drive motor driver that optimal 3.5-inch floppy disk drive spindle motor driver.
Package Dimensions
unit: 3222-HSOP28
[LB1913]
Functions Features
Three-phase full-wave linear drive On-chip digital speed control Start stop circuits (active low) Speed switching High: rpm, Low: Current limiter circuit Index comparator circuit Index delay circuit Thermal protection circuit
SANYO: HSOP28
Specifications
Absolute Maximum Ratings 25°C
Parameter Maximum supply voltage Maximum output current Maximum steady-state output current Allowable power dissipation Operating temperature Storage temperature Symbol max1 max2 Topr Tstg Independent Conditions Ratings +150 Unit
Allowable Operating Ranges 25°C
Parameter Recommended supply voltage Symbol Conditions Ratings Unit
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, Chome, Ueno, Taito-ku, TOKYO, JAPAN
83196HA (0T) 5503-1/6
LB1913 Electrical Characteristics 25°C,
Parameter Symbol ICCO VSLL VSLH IS/S VS/SL VS/SH Vdif Vsat Vlim I+/I- IDSC FOSC VIDL IIDL VFGO VFGB VCC-1.0 1041.5 0.27 sink source 0.33 Conditions (standby mode) (normal mode) Ratings VCC-1.0 Unit mVp-p
Current drain bias current input low-level voltage input high-level voltage bias current low-level voltage 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 converter source current converter sink current converter current ratio buffer input current Schmitt hysteresis Number speed discriminator counts Discriminator operating frequency Oscillator frequency range Index output low-level voltage Index output leakage current amplifier voltage gain amplifier input offset amplifier internal reference voltage Schmitt hysteresis Index input hysteresis Index common-mode input voltage range Thermal shutdown circuit operating temperature Hysteresis
Note: These items design target values tested.
Truth Table
Source Sink phase phase phase phase phase phase phase phase phase phase phase phase Hall input
"high-level" Hall amplifier input means: UIN+ UIN- VIN+ VIN- WIN+ WIN-
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LB1913 Assignment
Functions
UIN+ UIN- VIN+ VIN- WIN+ WIN- W-phase Hall element input voltage VCC-1.0 V-phase Hall element input Equivalent circuit Function U-phase Hall element input
Minus-side applying Hall bias current This goes open state stopped state Hall bias off.
FGIN+ FGIN- FGOUT
amplifier plus input reference voltage generated internally. amplifier minus input amplifier output
Index input
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LB1913
Continued from preceding page
voltage Low: High: Equivalent circuit Index output Function
Connection external time constant circuit.
Low: High:
Start/stop switching input This active-low input.
Low: High:
Speed switching input
Low: High: VCC-1.0
Reference clock input clock rate speeds.
Ground connection Connect this pin, frame ground.
Power supply Provide well-stabilized power supply that ripple noise enter LB1913 from this pin.
Used output current detection. output current converted voltage detected connecting resistor (Rf) between this VCC. current limiter operates detecting voltage this pin.
Continued next page
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LB1913
Continued from preceding page
voltage Equivalent circuit Speed discriminator Function
Frequency characteristics correction Current control system open loop oscillation prevented inserting capacitor between this ground.
UOUT VOUT WOUT
U-phase output V-phase output W-phase output
PGND
Output transistor ground connection
Index Delay Pulse Timing Chart
5503-5/6
LB1913 Block Diagram
products described contained herein intended surgical implants, life-support systems, aerospace equipment, nuclear power control systems, vehicles, disaster/crime-prevention equipment like, failure which directly indirectly cause injury, death property loss. Anyone purchasing products described contained herein above-mentioned shall: Accept full responsibility indemnify defend SANYO ELECTRIC CO., LTD., affiliates, subsidiaries distributors their officers employees, jointly severally, against claims litigation damages, cost expenses associated with such use: impose responsibility fault negligence which cited such claim litigation SANYO ELECTRIC CO., LTD., affiliates, subsidiaries distributors their officers employees jointly severally. Information (including circuit diagrams circuit parameters) herein example only; guaranteed volume production. SANYO believes information herein accurate reliable, guarantees made implied regarding infringements intellectual property rights other rights third parties. This catalog provides information August, 1996. Specifications information herein subject change without notice.
5503-6/6

Monolithic Integrated LB1913 Spindle Motor Driver Overv

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