LB1857 查看數據表（PDF） - SANYO -> Panasonic
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LB1857 Datasheet PDF : 6 Pages
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Ordering number : EN3976A
Monolithic Digital IC
LB1857M
Three-Phase Brushless Motor Driver IC
Overview
The LB1857M is a three-phase brushless motor driver IC
designed for use as a camcorder capstan or drum motor
driver, or as a digital audio tape player/recorder motor
driver.
Features
• 120° voltage linear system
• Appropriate for portable applications, since the
LB1857M reduces system power requirements by using
motor voltage control for speed control.
• Built-in torque ripple compensation circuit
• Small external capacitances due to the adoption of a soft
switching technique (chip capacitor).
• Built-in thermal shutdown circuit
• Built-in FG amplifier
Package Dimensions
unit: mm
3073A-MFP30S
[LB1857M]
SANYO: MFP30S
Specifications
Absolute Maximum Ratings at Ta = 25°C
Parameter
Supply voltage
Output applied voltage
Output current
Allowable power dissipation
Operating temperature
Storage temperature
Symbol
VCC1 max
VCC2 max
VS max
VO max
IO max
Pd max
Topr
Tstg
Conditions
Allowable Operating Ranges at Ta = 25°C
Parameter
Supply voltage
Symbol
VCC1
VCC2
VS
Conditions
VCC1 ≤ VCC2
Ratings
Unit
7
V
16
V
VCC2
V
VS + 2
V
1.5
A
1.0
W
–20 to +75
°C
–55 to +125
°C
Ratings
Unit
4.0 to 6.0
V
4 to 14
V
Up to VCC2
V
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
33098HA (OT)/D111TS No. 3976-1/6
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