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LB1938FAGEVB

P1-P3
1/8/2014 1 www.onsemi.com
C1:
VCC Bypass capacitor
（Electrolytic capacitor）
：10uF
VCC
(Power Supply)
VIN
(Power Supply)
Logic input
M
Test Procedure for the LB1938FAGEVB Evaluation Board
(Circuit diagram of the evaluation board)
1/8/2014 2 www.onsemi.com
OUT1
OUT2
10uF
+
1
VCC
2 IN
1
3
IN2
4 S
-GND
8P
-GND
7
OUT
1
6
OUT
2
5
(
NC
)
IN1
IN2
S-GND
P
-GND
VCC
VIN
C
1
SW
1 SW
2
LB
1938
FA
IC
1
Evaluation Board Manual
[Supply Voltage] VCC (2.2 to 10V): Power Supply for LSI
[Toggle Switch State] Upper Side: High (VIN)
Middle: Open, enable to external logic input
Lower Side: Low (GND)
[Operation Guide]
For DC motor control
1.
Initial Condition Setting: Set the toggle switches “Open or Low”
2.
Motor Connection: Connect the Motor between OUT1 and OUT2.
3.
Power Supply: Supply DC voltage to VCC, VIN.
4.
Motor Operation: Set IN1 and IN2 terminals according to the purpose (See LB1938FA
datasheet).
- Truth value table
IN1
IN2
OUT1
OUT2
Mode
L
L
OFF
OFF
Standby
H
L
H
L
Forward
L
H
L
H
Reverse
H
H
H
H
Brake
1/8/2014 3 www.onsemi.com
DCmotor load VCC = 3V IN2 = ”H”
Current waveform example - “brake current”
IN1
VOUT1
2V/div
VOUT2
2V/div
T=20ms/d
Low
High
High
Low
Brake
Reverse
Icoil
200mA/div
High
High
High
High
Brake
High
P1-P3

LB1938FAGEVB

Mfr. #:
Buy LB1938FAGEVB
Manufacturer:
ON Semiconductor
Description:
Motor / Motion / Ignition Controllers & Drivers EVABRD FOR LB1938FA
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
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