NJU7329ARB2-TE1 NJR, NJU7329ARB2-TE1 Datasheet - Page 7

• Manufacturer Part Number: NJU7329ARB2-TE1
• Description: Motor / Motion / Ignition Controllers & Drivers Single Phase DC Brushless Mtr Drvr
• Manufacturer: NJR
• Type: Single Phase DC Brushless Motor Driver ICr

Specifications of NJU7329ARB2-TE1

• Operating Supply Voltage: 7 V
• Supply Current: 4 mA
• Mounting Style: SMD/SMT
• Package / Case: TVSP-10
• Operating Temperature: 85 C
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

[Design Notes]
1. Selection of C1 and D1:
2. Lock Protection Function (Design of C2 value):
components:
Hall Elements: HW101A (AKE)
supply. Silicon rectifier diode (WO3C, 10D1 and equivalent) is appropriate.
a motor and a driver circuit from fatal destruction in case of motor halt.
safety operation. A value of C2 determines Lock detection time (T
Where C2 is 0.47uF:
In actual application, Lock detection time (Ton) is affected by the mechanical time constant of a motor. Therefore,
constant start up must be confirmed in actual evaluation taking operating variations (i.e.Temperature, Voltage change
and so on) in consideration.
Lock detection time (Ton) is given by:
Auto Resume Time (Toff) is given by:
Where C2 is 0.47uF:
Above application example is designed for 5V operation with motor current of 350mA. It uses the following
C1 is used for a noise reduction purpose. A typical value is 0.1uF.
Optimize the value in actual operating conditions if necessary. D1 is a diode for protection against reverse voltage
Lock Protection Function, consists of Motor Lock Detection and Auto Resume Function, is a safety feature to protect
Motor Lock Detection detects motor halt due to irregular load conditions and then cuts motor driving current f or
T
T
T
T
OFF
OFF
ON
ON
. 0
C
C
. 0
47
2
2
47
V
V
CL
CL
I
10
I
DCHG
10
CHG
V
V
6
6
ID
ID
1
2
sec
0
5 .
2
sec
6 .
5 .
6 .
10
0
10
0
6 .
6 .
6
6
. 0
. 1
62
88
sec
sec
on
) and Auto Resume Time (Toff).
NJU7329B
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