LB1910N Overview Monolithic Digital Spindle Motor Drive

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LB1910N Overview Monolithic Digital Spindle Motor Drive

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Ordering number EN5562
LB1910N
Overview
Monolithic Digital
Spindle Motor Driver
Package Dimensions
unit: 3222-HSOP28
[LB1910N]
LB1910N 3-phase disc drive motor driver that optimal 3.5-inch spindle motor driver.
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 Semiconductor products described contained herein have specifications that handle applications that require extremely high levels reliability, such life-support systems, aircraft's control systems, other applications whose failure reasonably expected result serious physical and/or material damage. Consult with your SANYO Semiconductor representative nearest before usingany SANYO Semiconductor products described contained herein such applications. SANYO Semiconductor assumes responsibility equipment failures that result from using products values that exceed, even momentarily, rated values (such maximum ratings, operating condition ranges, other parameters) listed products specifications SANYO Semiconductor products described contained herein.
TOKYO OFFICE Tokyo Bldg., 1-10, Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
33197HA (OT) 5562-1/7
LB1910N Electrical Characteristics 25°C,
Parameter Current drain bias current ICCO Symbol (standby) Vdif Vsat 0.27 0.33 1041.5 VIDL IIDL sink source Conditions Unit
(steady state) VSLL VSLH
input low-level voltage input high-level voltage bias current IS/S
low-level voltage VS/SL high-level voltage VS/SH Hall amplifier input bias current Common-mode input voltage range Differential input voltage range Hall bias output voltage Leakage current
mVp-p
Output saturation voltage Output leakage current Current limiter Vlim
Control amplifier voltage gain
Voltage gain difference between phases conversion source current conversion sink current conversion current ratio buffer input current Schmitt hysteresisVsh Speed discriminator counts I+/I- IDSC
Discriminator operating frequencyFD Oscillator frequency range Index input hysteresis VIDH Index input VIDO Index output low-level voltage Index output leakage current amplifier voltage gain amplifier input offset amplifier internal reference voltage Thermal shutdown temperature HysteresisTSD FOSC
Note: Items marked with asterisk design target values measured.
5562-2/7
LB1910N 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-
Index Pulse Timing Chart
5562-3/7
LB1910N Block Diagram
5562-4/7
LB1910N 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. 5562-5/7
LB1910N
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. 5562-6/7
LB1910N
Continued from preceding page.
Symbol voltage Equivalent circuit diagram Function
UOUT VOUT WOUT
phase output phase output phase output
PGND
Output transistor ground connection
Specifications SANYO Semiconductor products described contained herein stipulate performance, characteristics, functions described products independent state, guarantees performance, characteristics, functions described products mounted customer's products equipment. verify symptoms states that cannot evaluated independent device, customer should always evaluate test devices mounted customer's products equipment. SANYO Semiconductor Co., Ltd. strives supply high-quality high-reliability products. However, semiconductor products fail with some probability. possible that these probabilistic failures could give rise accidents events that could endanger human lives, that could give rise smoke fire, that could cause damage other property. When designing equipment, adopt safety measures that these kinds accidents events cannot occur. Such measures include limited protective circuits error prevention circuits safe design, redundant design, structural design. event that SANYO Semiconductor products (including technical data,services) described contained herein controlled under applicable local export control laws regulations, such products must exported without obtaining export license from authorities concerned accordance with above law. part this publication reproduced transmitted form means, electronic mechanical, including photocopying recording, information storage retrieval system, otherwise, without prior written permission SANYO Semiconductor Co., Ltd. information described contained herein subject change without notice product/technology improvement, etc. When designing equipment, refer "Delivery Specification" SANYO Semiconductor product that intend use. Information (including circuit diagrams circuit parameters) herein example only; guaranteed volume production. SANYO Semiconductor believes information herein accurate reliable, guarantees made implied regarding infringements intellectual property rights other rights third parties.
This catalog provides information March, 1997. Specifications information herein subject change without notice. 5562-7/7

LB1910N Overview Monolithic Digital Spindle Motor Drive

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