NJM2646E NJR, NJM2646E Datasheet

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NJM2646E

Manufacturer Part Number
NJM2646E
Description
Motor / Motion / Ignition Controllers & Drivers 2-Phase DC Brushless Motor Pre-driver IC
Manufacturer
NJR
Datasheet

Specifications of NJM2646E

Mounting Style
SMD/SMT
Package / Case
EMP-8
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
to VCC
Two-phase Unipolar DC Brushless Motor Pre-Driver IC
pre-driver IC.
totem-pole pre-driver for external power MOS-FET.
was set in 1:10 easy-to-use.
NJM2640.
H
GENERAL DESCRIPTION
FEATURES
BLOCK DIAGLAM
Operating Voltage
Absolute Maximum Voltage 30V
Internal Lock Detect / Auto Protection Release Circuit
Internal Hall Amp with Hysterisis
Lock Alarm Output Terminal
Package Outline
The NJM2646 is a 2-phase DC brushless motor
It incorporates Lock Detect / Auto Protection Circuit and
The turn ON / turn OFF ratio at Auto Protection Release
Moreover, the pin is compatible with 48V pre-driver
C
2
4
6
5
H1
H2
Ct
GND
+
-
Auto Restart
Lock Detect
Referrence
LOGIC
Bias
DMP8(M) / EMP8(E) / TVSP8(RB1)
Vcc
1
V
DD
=4 15V
Alarm
Lock
to VCC
to VCC
OUT1
OUT2
LA
8
7
3
PACKAGE OUTLINE
PIN FUNCTION
NJM2646M
1
2
3
4
NJM2646RB1
1: Vcc
2: H1
3: LA
4: H2
5: GND
6: Ct
7: OUT1
8: OUT2
NJM2646E
NJM2646
8
7
6
5
- 1 -

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NJM2646E Summary of contents

Page 1

... Internal Hall Amp with Hysterisis Lock Alarm Output Terminal Package Outline DMP8(M) / EMP8(E) / TVSP8(RB1) BLOCK DIAGLAM to VCC 1 Vcc Referrence Bias LOGIC - Lock Detect Ct Auto Restart C GND 5 Lock Alarm PACKAGE OUTLINE PIN FUNCTION to VCC 8 OUT1 to VCC 7 OUT2 LA 3 NJM2646 NJM2646M NJM2646E NJM2646RB1 Vcc GND OUT1 8: OUT2 - 1 - ...

Page 2

NJM2646 ABSOLUTE MAXIMUM RATINGS PARAMETER Supply Voltage Hall Input Voltage Range Output Current (Peak) Lock Alarm Output Voltage Hall Input Differential Voltage Lock Alarm Output Current Operating Temperature Range Operating Junction Temperature Range Storage Temperature Range Power Dissipation RECOMMENDED OPERATING ...

Page 3

ELECTRICAL CHARACTERISTICS PARAMETER SYMBOL Operating Current Icc Hall Input Hysterisis V HYS Range Hall Amplifier Input Bias I B Current High Side Output V Voltage Low Side Output V Voltage Output Clamp Voltage V CLM Lock Alarm Output V Voltage ...

Page 4

NJM2646 TYPICAL CHARACTERISTICS VCC vs ICC IOUT vs VOH Toff/Ton -50 - VCC[ IOUT[mA 100 ...

Page 5

APPLICATION NOTE The NJM2646 is a two-phase motor unipolar pre-driver IC for FET drive suitable for fan motor drivers for communication equipment where 12V operation is required. [Application Circuit Example GND R1 Hall H1 element ...

Page 6

NJM2646 Auto Resume Time (Toff) is given by: Vch Vcl sec OFF Idc Where C2 is 0.47uF OFF In actual application, Lock detection time (Ton) is affected by the mechanical time ...

Page 7

The output voltage of hall elements is influenced by the bias current and magnetic flux density of hall elements. The optimum input voltage of NJM2646 is 100mVp-p and higher. With such input voltage, the highest efficiency can be obtained. 4. ...

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