Three-Phase Brushless Motor Driver - Sanyo
Description
Ordering number : EN5792
Monolithic Digital IC
LB1991V
Three-Phase Brushless Motor Driver for Portable VCR Capstan Motors
Overview
The LB1991V is a 3-phase brushless motor driver IC that is optimal for driving the capstan motor in portable VCR products.
• Speed control technique based on motor voltage and current control.
• Built-in FG comparators • Built-in thermal shutdown circuit
Functions
• 3-phase full-wave voltage drive technique (120° voltage-linear technique) • Torque ripple correction circuit (overlap correction)
Package Dimensions
unit: mm 3175A-SSOP24
[LB1991V]
Allowable power dissipation, Pd max — W
SANYO: SSOP24 Ambient temperature, Ta — °C
Specifications
Absolute Maximum Ratings at Ta = 25°C
Parameter Symbol VCC1 max Maximum supply voltage VCC2 max VS max Applied output voltage Maximum output current Allowable power dissipation Operating temperature Storage temperature VO max IO max Pd max Topr Tstg Independent IC Conditions Ratings 10 11 11 VS + 2 1.
0 440 –20 to +75 –55 to +150 Unit V V V V A mW °C °C
Allowable Operating Ranges at Ta = 25°C
Parameter Symbol VCC1 Supply voltage VCC2 VS Hall input amplitude VHALL Between Hall effect element inputs VCC1 ≤ VCC2 Conditions Ratings 2.
7 to 6.
0 3.
5 to 9.
0 Up to VCC2 ±20 to ±80 Unit V V V mVp-p
SANYO Electric Co.
,Ltd.
Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg.
, 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
53098RM (OT) No.
5792-1/7
LB1991V Electrical Characteristics at Ta = 25°C, VCC1 = 3 V, VCC2 = 4.
75 V, VS = 1.
5 V
Parameter [Supply Current] VCC1 current drain VCC2 current drain VCC1 quiescent current VCC2 quiescent current VS quiescent current [VX1] High side residual voltage Low side residual voltage [VX2] High side residual voltage Low side residual voltage Output saturation voltage Overlap High/low overlap difference [Hall Amplifiers] Input offset voltage Common-mode input voltage range I/O voltage gain [Standby Pin] High-level voltage Low-level voltage Input current...
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