Monolithic Digital LB1910 Spindle Motor Driver Overview

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Monolithic Digital LB1910 Spindle Motor Driver Overview

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Ordering number EN5383
Monolithic Digital
LB1910
Spindle Motor Driver
Overview
LB1910 3-phase disc drive motor driver that optimal 3.5-inch spindle motor driver.
Package Dimensions
unit: 3222-HSOP28
[LB1910]
Functions Features
Three-phase full-wave linear driver Digital speed control circuit Start stop circuits (active low) switching Current limiter circuit Built-in index comparator Thermal shutdown 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
43096HA (OT) 5383-1/7
LB1910
Electrical Characteristics 25°C,
Parameter 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 input voltage range Hall bias output voltage Leakage current Output saturation voltage Output leakage current Current limiter Control amplifier voltage gain Voltage gain difference between phases conversion source current conversion sink current conversion current ratio buffer input current Schmitt hysteresis 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 Thermal shutdown temperature Hysteresis Symbol ICCO VSLL VSLH IS/S VS/SL VS/SH Vdif Vsat Vlim I+/I- IDSC FOSC VIDL IIDL 1041.5 0.27 sink source 0.33 (standby) (steady state) Conditions Unit mVp-p
Note: Items marked with asterisk design target values measured.
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LB1910 Assignment
Truth Table
Source sink phase phase phase phase phase phase phase phase phase phase phase phase Hall input
Note: Hall input high levels defined UIN+ UIN- VIN+ VIN- WIN+ WIN-
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LB1910 Block Diagram
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LB1910 Functions
Symbol voltage Equivalent circuit diagram Function
UIN+ UIN- VIN+ VIN- WIN+ WIN-
phase Hall element input phase Hall element input phase Hall element input
Minus side connection providing Hall bias current This becomes open stopped state, thus cutting Hall bias current.
FGIN+ FGIN- FGOUT
amplifier plus input 2.5-V reference voltage generated internally. amplifier minus input amplifier output
Index input
Index output
Continued next page.
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LB1910
Continued from preceding page.
Symbol voltage Equivalent circuit diagram Function
Start/stop mode switching This active-low input.
Rotational speed switching
Reference clock input 1-MHz input frequency corresponds speeds rpm.
Ground This pin, frame must grounded together.
Power supply This voltage must stabilized that ripple noise enter
Output current detection output current detected voltage connecting resistor between this VCC. current limiter operates detecting voltage this pin.
Speed discriminator
Frequency characteristics compensation Current control system loop oscillation prevented connecting capacitor between this ground.
Continued next page.
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LB1910
Continued from preceding page.
Symbol voltage Equivalent circuit diagram Function
UOUT VOUT WOUT
phase output phase output phase output
PGND
Output transistor ground connection
Index Pulse Timing Chart
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 December, 1997. Specifications information herein subject change without notice. 5383-7/7

Monolithic Digital LB1910 Spindle Motor Driver Overview

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