NJM2625
PWM TYPE 3-PHASE DC BRUSHLESS MOTOR CONTOROL IC
sGENERAL
DESCRIPTION
The NJM2625 is a 3 phase DC brush-less motor driver IC
with PWM control.
It incorporates hall amplifiers, PWM control circuits,
totem-pole pre drivers for external power MOS transistors.
current limit and frequency generator circuit.
The NJM2625 easily implements speed control and
rotation direction control for DC motor application.
sPACKAGE
OUTLINE
NJM2625D
NJM2625M
sFEATURES
•Operating
Voltage
•Pre-Driver
Circuit
•Current
Limit Sense Voltage
•Internal
Oscillator
•Forward
or Reverse Direction
•FG
Signal Output
•Internal
Soft Start
•Internal
ON/OFF Circuit
•Bipolar
Technology
•Package
Outline
V
+
=8V to 18V
Iout=+50mA/-150mA MAX.
Current limit=0.5V±10%
Frequency control for external capacitor
Output frequency to hall frequency
External capacitor to Verr pin.
No-output is Verr pin to GND.
DIP20, DMP20
sPIN
CONFIGRATION
1
2
3
4
5
6
7
20
19
18
17
16
15
14
13
12
8
9
10
PIN FUNCTION
11.GND
1.FG
12.I
LIMIT
2.Vref
3.H1+
13.WL
4.H1-
14.VL
5.H2+
15.UL
6.H2-
16.WH
7.H3+
17.VH
8.H3-
18.UH
9.Verr
19.V
+
10.OSC
20.F/R
11
NJM2625D
NJM2625M
Ver 1.0
- 1 -
NJM2625
sBLOCK
DIAGRAM
20.F/R
V
+
3.H1+
4.H1-
Rotor
5.H2+
6.H2-
7.H3+
8.H3-
V
+
19.V
+
Position
Decode
16.WH
17.VH
18.UH
2.Vref
Vref
UVLO
13.W L
10.OSC
Saw
Oscillator
PWM
COMP
Logic
14.VL
9.Verr
1.FG
FG
15.UL
11.GND
12.ILIMIT
-2-
NJM2625
sABSOLUTE
MAXIMUM RATINGS (Ta=25°C)
PARAMETER
SYMBOL
Maximum Supply Voltage
V
+
Power Dissipation
P
D
Operating Temperature Range
Storage Temperature Range
Topr
Tstg
RATINGS
20
(DIP20)
700
(DMP20)
350
-40
∼
+85
-50
∼
+150
UNIT
V
mW
°C
°C
sELECTRICAL
CHARACTERISTICS (V
+
=12V, Ct=1000pF, Cref=1µF, Ta=25°C)
Total Device
PARAMETER
SYMBOL
TEST CONDITIONS
MIN.
Supply Voltage
Under Voltage Sense Voltage
(Under Voltage Lock Out)
Hysteresis Voltage
(Under Voltage Lock Out)
Supply Current
V
+
UVLO
∆UVLO
Icc
RL=∞
PWM Duty=50%
Output Enable
V
+
Increasing
8.0
7.00
0.4
-
TYP.
-
7.25
0.5
15.0
MAX.
18.0
7.50
0.6
22.0
UNIT
V
V
V
mA
Hall Sensor Section
PARAMETER
Hysteresis Voltage
Input Common mode
Voltage range
Input Bias Current
Output Section
PARAMETER
Output Voltage 1
Output Voltage 2
Over Current Sense Section
PARAMETER
Sense Voltage
Input Voltage Range
Input Bias Current
Oscillator Section
PARAMETER
Oscillation Frequency
Oscillate Fluctuations
(Line Regulation)
PWM0% Sense Voltage
PWM100% Sense Voltage
Saw Wave Peak Voltage
Saw Wave Bottom Voltage
SYMBOL
Vhys
Vicm
IB
TEST CONDITIONS
RL=470Ω
RL=470Ω
MIN.
-
1.5
-
TYP.
30
-
-
MAX.
-
10.5
600
UNIT
mV
V
nA
SYMBOL
Voh
Vol
TEST CONDITIONS
Isource=50mA
Isink=150mA
MIN.
10
-
TYP.
10.3
1.5
MAX.
-
2.0
UNIT
V
V
SYMBOL
Vth
Vip
IIB
TEST CONDITIONS
MIN.
0.45
-
-
TYP.
0.50
-
-0.9
MAX.
0.55
3.0
-5.0
UNIT
V
V
µA
SYMBOL
fosc
∆fosc/∆V
PWM0
PWM1
Vpfosc
Vbfosc
TEST CONDITIONS
MIN.
20
TYP.
25
0.01
-
-
5.00
0.65
MAX.
30
5.00
0.35
-
5.25
0.80
UNIT
kHz
%
V
V
V
V
V
+
=8V to 18V
PWM DUTY=0%
PWM DUTY=100%
-
-
5.40
4.75
0.50
-3-
NJM2625
sELECTRICAL
CHARACTERISTICS (V
+
=12V, Ct=1000pF, Cref=1µF, Ta=25°C)
FG Output Section
PARAMETER
Saturation Voltage
Pull-Up Resistance
Error Amplifier Section
PARAMETER
Input Offset Voltage
Input Offset Current
Input Bias Current
Input Common mode
Voltage range
Reference Voltage Section
PARAMETER
Output Voltage
Line Regulation
Road Regulation
SYMBOL
FGV
FGR
TEST CONDITIONS
MIN.
-
8
TYP.
0.3
10
MAX.
0.5
12
UNIT
V
kΩ
SYMBOL
Vio
Iio
Iibrr
Vicmrr
TEST CONDITIONS
MIN.
-
-
-
0
TYP.
7
8.0
-46
-
MAX.
-
-
-
Vref
UNIT
mV
nA
nA
V
SYMBOL
Vref
∆VrefLI
∆VrefLO
TEST CONDITIONS
Iref=1.0mA
V
+
=8V to 18V
Iref=1.0mA to 20.0mA
MIN.
6.00
-
-
TYP.
6.40
1.5
150
MAX.
6.80
25
250
UNIT
V
mV
mV
Forward or Reverse Direction Section
PARAMETER
SYMBOL
Forward Direction
Reverse Direction
Hysteresis Voltage
VF
VR
∆VFR
TEST CONDITIONS
RL=470Ω
RL=470Ω
RL=470Ω
MIN.
V
+
-2
-
-
TYP.
-
-
0.5
MAX.
V
+
2
-
UNIT
V
V
V
(note) Output switch tests are performed under pulsed conditions to minimize power dissipation.
sFG
Output
Input
H2
L
L
H
H
H
L
FG Output
H
L
H
L
H
L
1
2
3
4
5
6
H1
H
H
H
L
L
L
H3
H
L
L
L
H
H
sF/R
Input Pin
This pin does not include neither pull up resistance nor pull down resistance.
Terminal
Voltage
L input
H input
Direction
F
R
-4-
NJM2625
sTYPICAL
APPLICATION
20.F/R
V
+
Vm
16.WH
3.H1+
4.H1-
5.H2+
6.H2-
7.H3+
8.H3-
+
H1
Rotor
Position
H2
Decode
Motor
H3
V
+
17.VH
N
S
N
S
19.V
18.UH
2.Vref
Vref
UVLO
10.OSC
Saw
Oscillator
PW M
COMP
Logic
13.W L
14.VL
9.Verr
1.FG
FG
15.UL
11.GND
12.ILIMIT
•
A rotation direction change must be made after motor stopped completely.
•
When PWM duty is extremely small, two or more switching elements cannot be driven entirely.
In such case, switching elements will generate excess heat and it may cause destruction of the switching
devices. Therefore, extensive heat evaluation is necessary for switching device selection particularly in
consideration of the area of safety operation (ASO).
-5-
嵌入式系统
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
