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参数资料
| 型号： | LB1841V |
| 元件分类： | 运动控制电子 |
| 英文描述： | BRUSH DC MOTOR CONTROLLER, 0.8 A, PDSO20 |
| 封装： | SSOP-20 |
| 文件页数： | 2/7页 |
| 文件大小： | 208K |
| 代理商： | LB1841V |
LB1841V
No. 4384-2/7
Electrical Characteristics at Ta = 25
°C, V
CC = 7.2V
Parameter
Symbol
Conditions
Ratings
Unit
min
typ
max
Power supply current
ICC 0
In standby mode
0.1
10
μA
ICC 1
Forward/reverse No load
9
13
mA
ICC 2
In brake mode
12
18
mA
Output saturation voltage
Vsat 1
IO = 200 mA (upper side + lower side)
0.20
0.30
V
Vsat 2
IO = 400 mA (upper side + lower side)
0.40
0.60
V
Reference voltage
Vref
IVref = 1 mA
1.85
2.0
2.15
V
Current limiter characteristics
I limit
VS-VM resistance = 1Ω at LIR = 2V
165
185
205
mA
Input current
IIN
VIN = 5V
90
150
μA
PBC drive current
IPBC
–10
mA
Vs output voltage
VS
2.55
×VSVR
V
RD saturation voltage
VRDsat
IO = 1 mA
0.3
V
Allowable Operating Ranges at Ta = 25
°C
Parameter
Symbol
Conditions
Ratings
Unit
Power supply voltage
VCC
3.0 to 9.0
V
Input High voltage
VIH
3.0 to 9.0
V
Input Low voltage
VIL
–0.3 to 0.7
V
SVR input voltage
VSVR
1.0 to VCC–0.2
V
LIR input voltage
VLIR
0.5 to VCC–1.0
V
Output current limiter
I limit
50 to 350
mA
Constant-voltage output VS is determined by the equation VS = 2.55 × VSVR.
The input range of VSVR is 1.0 to 4 V. When VS ≥ VCC, the output will be saturated.
The output current limiter value is determined according to the following equation (Rf is a sensing resistor across VS and VM).
I limit = VLIR/10 Rf(A)
VLIR input range is 0.5 to VCC –1.0 (V).
Block Diagram and Sample Application Circuit
VCC = 3 to 10.5V
10
μF
Vcc
SVR
LIR
PBC
VS
VM
OUT1
M
OUT2
P-G
RD
DEL
IN2
IN1
Thermal
shutdown
S-G
Vref
= 2.0V
0.001
μF
to 0.01
μF
VS = 5.1V
Rf = 0.47 to 2Ω
10
μF
DECODER
Limit
detection
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