LB1847-E SANYO, LB1847-E Datasheet - Page 5

• Manufacturer Part Number: LB1847-E
• Description: IC MTR DRVR BPLR STEP DIP28H
• Manufacturer: SANYO

Specifications of LB1847-E

• Applications: Stepper Motor Driver
• Number Of Outputs: 1
• Voltage - Load: 10 V ~ 45 V
• Voltage - Supply: 4.75 V ~ 5.25 V
• Operating Temperature: -20°C ~ 85°C
• Mounting Type: Through Hole
• Package / Case: 28-DIP (0.550", 12.7mm) Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Output: -
• Other names: 869-1250

Pin Function
Truth Table
Set Current Truth Table
* Current ratio (%) is the calculated set current value.
Current Decay Switching Truth Table
Current decay mode
I A 4
PHASE
Pin No.
1
1
1
1
1
1
1
1
0
0
0
0
0
0
22,23
24,25
21,20
19,18
SLOW DECAY
FAST DECAY
MIX DECAY
13
12
11
10
14
15
27
16
26
17
28
H
1
2
3
4
5
6
7
8
9
L
−
I A 3
1
1
1
1
0
0
0
0
1
1
1
1
0
0
MD
V REF 1
V REF 2
CR1
CR2
E1
E2
DECAY1
DECAY2
OUT A
OUT A
OUT B
OUT B
V BB
GND
PHASE1
PHASE2
ENABLE1
ENABLE2
I A 4,I A 3
I A 2,I A 1
I B 4,I B 3
I B 2,I B 1
V CC
ENABLE
Pin name
H
L
L
I A 2
1
1
0
0
1
1
0
0
1
1
0
0
1
1
I A 1
DECAY pin
1
0
1
0
1
0
1
0
1
0
1
0
1
0
OUT A
OFF
Sets the OFF time for FAST mode and SLOW mode in MIX DECAY.
Setting input range: 4V to 1.5V.
Output set current reference supply pin.
Setting voltage range: 0V to 3V.
Output OFF time setting pin for switching operation.
Pin for controlling the set current with sensing resistor RE.
SLOW mode/FAST mode selector pin.
DECAY2 SLOW DECAY: H
FAST DECAY: L
Output pin.
Output stage supply voltage pin.
Ground pin.
Output phase selector input pin
Output ON/OFF setting input pin.
Output set current digital input pin.
15-stage voltage setting.
Logic block supply voltage pin
H
L
H
L
L
11.5/11.5 × V REF /3.04RE = Iout
11.0/11.5 × V REF /3.04RE = Iout
10.5/11.5 × V REF /3.04RE = Iout
10.0/11.5 × V REF /3.04RE = Iout
9.5/11.5 × V REF /3.04RE = Iout
9.0/11.5 × V REF /3.04RE = Iout
8.5/11.5 × V REF /3.04RE = Iout
8.0/11.5 × V REF /3.04RE = Iout
7.0/11.5 × V REF /3.04RE = Iout
6.0/11.5 × V REF /3.04RE = Iout
5.0/11.5 × V REF /3.04RE = Iout
4.0/11.5 × V REF /3.04RE = Iout
3.0/11.5 × V REF /3.04RE = Iout
2.0/11.5 × V REF /3.04RE = Iout
OUT A
OFF
H
L
4V to 1.5V input
Set current Iout
voltage setting
MD pin
L
L
LB1847
CR voltage > MD: dual-side chopping
CR voltage < MD: upper-side chopping
Upper-side chopping
Current ratio
Dual-side chopping
Output chopping
95.65
91.30
86.95
82.61
78.26
73.91
69.56
60.87
52.17
43.48
34.78
26.08
17.39
100
Function
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