NJW4305 Datasheet, PDF (1/1 Pages) New Japan Radio – PWM 3-PHASE DC BRUSHLESS MOTOR CONTROLLER

NJW4305
PWM 3-PHASE DC BRUSHLESS MOTOR CONTROLLER
■ GENERAL DESCRIPTION
The NJW4305 is a 3-phase brushless DC motor controller with
PWM control.
It uses hall element signal inputs and generates motor
driving waveform.
Output pre-driver is optimized to work with external
power MOS transistors for better power handling.
Using the NJW4305, 3-phase DC motor application with speed
control feature can be easily achieved.
■ FEATURE
▪ Supply Voltage
▪ Quiescent Current
▪ PWM Pre-Driver
▪ Direct PWM Control Circuit
▪ Operating Temperature
▪ Protection Circuit
▪ FG Output
▪ Forward / Reverse Direction
▪ Package
: 7.0V ~ 38V
: 4.1mA typ.
: 100mA
: -40ºC ~ +105ºC ( T Series ）
: ILIMIT, UVLO, TSD, LD
: SSOP-20-C3
■ PACKAGE OUTLINE
NJW4305XVC3/T
■ BLOCK DIAGLAM
TSD
H1+
+
H1-
-
H2+
+
H2-
-
H3+
+
H3-
-
UVLO
VREF
Rotor
Position
Decode
VCC
UH
VH
WH
UL
VL
■ FUNCTION LINEUP
NJW4305A
: FR Function
FR
Dead
Local
WL
Tim e
Os cillator
NJW4305B ( PLN )
NJW4305C ( PLN )
: Vref（for HB）
: BR Function
OSC
Saw
Os cillator
PWM Logic
+
-
ILIMIT
NJW4305D ( PLN )
: FR+Vref+BR+Small PKG
+
VERR
-
FG
Lock
Detect
GND
Ct
　　　　　　　　　 Ver.2010/09/03