lb1910 Sanyo Semiconductor Corporation, lb1910 Datasheet

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lb1910

Manufacturer Part Number
lb1910
Description
Fdd Spindle Motor Driver
Manufacturer
Sanyo Semiconductor Corporation
Datasheet
Ordering number : EN5383
Overview
The LB1910 is a 3-phase disc drive motor driver that is
optimal for use as a 3.5-inch FDD spindle motor driver.
Functions and Features
• Three-phase full-wave linear driver
• Digital speed control circuit
• Start and stop circuits (active low)
• RPM switching
• Current limiter circuit
• Built-in index comparator
• Thermal shutdown circuit
Specifications
Absolute Maximum Ratings at Ta = 25°C
Allowable Operating Ranges at Ta = 25°C
Maximum supply voltage
Maximum output current
Maximum steady-state output current
Allowable power dissipation
Operating temperature
Storage temperature
Recommended supply voltage
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
Parameter
Parameter
H: 300 rpm
L: 360 rpm
V
I
I
Symbol
Pd max
Symbol
O
O
CC
Topr
Tstg
V
max1
max2
CC
max
t
Independent IC
0.5 s
Package Dimensions
unit: mm
3222-HSOP28
Conditions
Conditions
FDD Spindle Motor Driver
[LB1910]
43096HA (OT) No. 5383-1/7
Monolithic Digital IC
–40 to +150
–20 to +80
Ratings
Ratings
4.2 to 6.5
SANYO: HSOP28
LB1910
7.0
1.0
0.7
0.5
Unit
Unit
°C
°C
W
V
A
A
V

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lb1910 Summary of contents

Page 1

... Ordering number : EN5383 Overview The LB1910 is a 3-phase disc drive motor driver that is optimal for use as a 3.5-inch FDD spindle motor driver. Functions and Features • Three-phase full-wave linear driver • Digital speed control circuit • Start and stop circuits (active low) • ...

Page 2

... FG amplifier input offset amplifier internal reference voltage Thermal shutdown temperature TSD * Hysteresis TSD * Note: * Items marked with an asterisk are design target values and are not measured. LB1910 = Conditions = 0.7 A, sink + source min typ ...

Page 3

... U phase phase U phase phase V phase phase V phase phase W phase Note: Hall input high levels are defined as: U > > > LB1910 – IN – – IN No. 5383-3/7 ...

Page 4

... Block Diagram LB1910 No. 5383-4/7 ...

Page 5

... – L: 0.4 V max 4.5 V min LB1910 Equivalent circuit diagram U phase Hall element input V phase Hall element input W phase Hall element input Minus side connection for providing the Hall bias current This pin becomes open in the stopped state, thus cutting the Hall bias current. ...

Page 6

... LB1910 Equivalent circuit diagram Start/stop mode switching This is an active-low input. Rotational speed switching Reference clock input A 1-MHz input frequency corresponds to speeds of 300 and 360 rpm. • Ground • This pin, pin 14, and the frame must all be grounded together ...

Page 7

... SANYO believes information herein is accurate and reliable, but no guarantees are made or implied regarding its use or any infringements of intellectual property rights or other rights of third parties. This catalog provides information as of December, 1997. Specifications and information herein are subject to change without notice. LB1910 Equivalent circuit diagram U phase output V phase output ...

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