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L6285 데이터시트 PDF




STMicroelectronics에서 제조한 전자 부품 L6285은 전자 산업 및 응용 분야에서
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부품번호 L6285 기능
기능 3 CHANNELS MULTIPOWER SYSTEM
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L6285 데이터시트, 핀배열, 회로
L6285
3 CHANNELS MULTIPOWER SYSTEM
ADVANCE DATA
CHANNEL-A AND CHANNEL-B FOR UNIPO-
LAR STEPPER MOTORS
– LOW SIDE: RDSON = 1.2
– HIGH SIDE ; RDSON = 1.2
CHANNEL-C FOR DC MOTORS
– LOW SIDE: RDSON = 1.7
– HIGH SIDE: RDSON = 1.2
CHOPPING MODE DRIVING FOR C.L. CUR-
RENT CONTROL ON CHA AND CHB AND
O.L. VOLTAGE CONTROL ON CHC.
INTERNAL FOUR DRIVING LATCHES
16 BIT INTERNAL SHIFT REGISTER
DIRECT INTERFACE TO µP
SERIAL DRIVING SEQUENCE LOADING
CMOS COMPATIBLE INPUTS
PRE-ALARM OUTPUT SIGNAL
THERMAL SHUTDOWN
DESCRIPTION
This Combo Motor Driver uses large scale inte-
gration to incorporate several functions into the
same chip.
1) Two unipolar stepper motor driver
2) A full bridge DC motor driver
BLOCK DIAGRAM
MULTIPOWER BCD TECHNOLOGY
PLCC44
SDIP42
ORDERING NUMBERS:
L6285
L6285S
3) Serial microprocesor interface
The power output stages are DMOS and the input
can be interfaced to a CMOS Microprocessor
logic.
The phase current in the unipolar stepper motor
windings is controlled by two external sensing re-
sistors in fixed frequency chopping mode. The os-
cillator block provides clocks each other 180° out
of phase to the two stepper motor driver in order
to avoid symultaneous current peaks.
For the DC motor driver is used a bridge; the
RMS voltage to supply this motor is fixed by a
May 1994
1/16
This is advanced information on a new product now in development or undergoing evaluation. Details are subject to change without notice.




L6285 pdf, 반도체, 판매, 대치품
L6285
ELECTRICAL CHARACTERISTICS (Tj = 25 °C, Vs = 5V, Vp = 24V unless othewise specified)
Symbol
Vp
Parameter
Power Supply Voltage
Test Conditions
Min.
9
Typ.
Max.
26.5
Unit
V
Ip Quiescent Power Supply (note 1)
Current
Vs Logic Supply Voltage
Is Quiescent Logic Supply
Current
(note 1)
7 mA
4.5 5.5 V
20 mA
LOGIC LEVEL
Symbol
VinL
VinH
IinL
IinH
Parameter
Input Low Voltage
Input High Voltage
Input Low Current
Input High Current
Test Conditions
Vin = VinL
Vin = VinH
Min.
-0.3
3.15
-10
Typ.
Max.
1.35
VS+0.3
10
Unit
V
V
µA
µA
CHANNEL A AND CHANNEL B (UNIPOLAR MOTORS)
Symbol
RDSONL
RDSONH
IDSSL
IDSSH
VREF
Td
fmax
Parameter
Low Side DMOS ON Res.
High Side DMOS ON Res.
Low Side DMOS Leakage
Current
High Side DMOS Leakage
Current
Voltage reference to the
Comparator
Turn OFF Delay on HIGH
Side DMOS after the
Sensing Current Reach the
Threshold Value
Max Chopping Frequency
Test Conditions
IDS = 0.7A
IDS = 0.7A
VDS = 60V; output OFF
VP = 30V; VO= 0V
LEVEL 1
LEVEL 2
LEVEL 3
LEVEL 4
(note 2)
CHANNEL C (DC MOTORS) (see Fig. 5)
Symbol
fosc
DC
Ib2
Vlow
RDSONH
RDSONL
ILH
ILL
Vfddc
fmax
Vboot
IL bo ot
Parameter
Test Conditions
Oscillator Frequency
Cosc = 3.3nF; V1 = 2/3VS
Duty Cycle
V2 = 1/2VS
Comparator Input Bias
V2 = 200mV
Open Drain Output
I = 5mA
High Side DMOS ON Res.
Low Side DMOS ON Res.
HSD MOS Leakage Current
IDS = 0.7A
IDS = 0.7A
VP = 30V; VO = 0V
LSD MOS Leakage Current VO = 30V; Vsense = 0V
Forward Diode DC Voltage
(DMOS Diode)
Ifdcc = 0.7A
Max Chopping Frequency
Voltage on pin Boot1
Leakage Current on pin Boot1 Vbott = Vp +12V; Vp = 26.5V
4/16
Min.
Typ.
Max.
1.2
1.2
2
Unit
mA
-1.5 mA
100 125 150 mV
220 250 280 mV
340 375 410 mV
465 500 535 mV
1 µs
40 KHz
Min.
17
72
-1
-1
-1.5
Typ.
22
75
0.2
1.4
Max.
28
81
0.4
1.2
1.7
2
Unit
KHz
%
µA
V
mA
mA
V
Vp +7
40 KHz
V
200 µA

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L6285 전자부품, 판매, 대치품
REGISTER 4 (CHC). See note 2
D0 D1 D2 D3
OUT1 C
X X 0 0 OFF
0 0 1 1 OFF
1 0 1 1 VP
0 1 1 1 GND
1 1 1 1 GND
1 0 1 0 VP
0 1 1 0 CHOPPING; V2 LOW LEVEL
1 0 0 1 VP
0 1 0 1 CHOPPING; V2 HIGH LEVEL
0 0 1 0 OFF
1 1 1 0 VP
0 0 0 1 OFF
1 1 0 1 VP
Note 1: Low side DMOS status (DM1/2 in Fig. 4)
Note 2: Bridge status (see Fig. 3): OFF = tristate; V P =, DM3/4ON; GND = DM1/2 ON
L6285
OUT2 C
OFF
OFF
GND
VP
GND
CHOPPING; V2 LOW LEVEL
VP
CHOPPING; V2 HIGH LEVEL
VP
OFF
VP
OFF
VP
Figure 3: CHC Chopping Characteristics
7/16

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