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PDF LB1820 Data sheet ( Hoja de datos )
| Número de pieza | LB1820 | |
| Descripción | Office Automation-Use 3-Phase Brushless Motor Driver | |
| Fabricantes | Sanyo | |
| Logotipo |  |
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Ordering number: EN3302A
Monolithic Digital IC
LB1820
Office Automation-Use 3-Phase Brushless Motor
Driver
Overview
The LB1820 is a three-phase brushless motor with a digital
speed control circuit built in.
The LB1820 is ideally suited for use in office automation
applications such as laser beam printers and drum motor
drivers.
Package Dimensions
unit : mm
3147-DIP28HS
[LB1820]
Features
. Three-phase brushless motor driver with digital speed control
function
. 30 V withstand voltage and 2.5 A output current
. Current limiter built in
. Low-voltage protection circuit built in
. Thermal shutdown circuit built in
. Hall amp with hysteresis
. Start/stop pin built in
. Crystal oscillator and divider built in
. Digital speed control circuit built in
. Lock detector built in
Specifications
Absolute Maximum Ratings at Ta = 25 °C
Parameter
Maximum supply voltage 1
Maximum supply voltage 2
Output current
Allowable power dissipation 1
Allowable power dissipation 2
Operating temperature
Storage temperature
Symbol
VCC
VM
IO
Pd max 1
Pd max 2
Topr
Tstg
Conditions
t % 100 ms
Independent IC
With arbitrarily large heat sink
Allowable Operating Ranges at Ta = 25 °C
Parameter
Supply voltage range 1
Supply voltage range 2
Voltage regulator output current
Comparator output current
Lock detector output current
Symbol
VCC
VM
IVH
IOSC
ILD
Conditions
SANYO : DIP28HS
Ratings
30
30
2.5
3
20
–20 to +80
–55 to +150
Unit
V
V
A
W
W
°C
°C
Ratings
9.5 to 28
5 to 28
0 to +20
0 to +30
0 to +20
Unit
V
V
mA
mA
mA
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
43096HA(II)/3260TA, TS(GTPS) No.3302-1/7
1 page  
LB1820
Pin Description
Pin No.
19, 20
17, 18
15, 16
6
8
10
2
12
11
14
3
1
24
25
23
4
22
27
26
28
21
13
Pin Name
IN+1, IN–1
IN+2, IN–2
IN+3, IN–3
OUT 1
OUT 2
OUT 3
VCC
VM
Rf
GND
CR
OSC
INTOUT
INTIN
DOUT
C
LD
FGIN–
FGIN+
FGOUT
Xtal
5V
Functions
OUT 1: Hall element input pins for Phase 1. ‘‘H’’ logic is the state when IN+ > IN−.
OUT 2: Hall element input pins for Phase 2. ‘‘H’’ logic is the state when IN+ > IN−.
OUT 3: Hall element input pins for Phase 3. ‘‘H’’ logic is the state when IN+ > IN–.
Output pin 1.
Output pin 2.
Output pin 3.
Power supply for other than output blocks.
Power supply for output blocks.
Output current detection pin. Rf is connected across this pin and GND to detect the output current as
voltage.
Ground for other than output blocks.
The lowest potential of output transistor is the voltage at Rf pin.
Sets the oscillating frequency of the switching regulator.
Outputs duty-controlled pulses.
Open-collector output.
Integrator output pin (speed control pin).
Varies the switching regulator output voltage.
Integrator input pin.
Speed discriminator output pin.
Goes LOW when the specified speed is exceeded.
Suppresses ripples in the motor current during operation of current limiter 2.
Lock detection pin.
Goes HIGH when the motor rotation speed is within the locking range.
FG pulse input (Start/Stop control) pin.
FG pulse input (4 V supply) pin.
FG amp output pin.
Crystal oscillator connecting pin.
5 V supply pin.
No.3302-5/7
5 Page | ||
| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet LB1820.PDF ] | |
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