JRC NJU7332 User Manual

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NJU7332

Single-phase DC Brushless Motor Driver IC

■■■■ GENERAL DESCRIPTION
The NJU7332 is a single-phase DC brushless mot or driver IC

for very small fan-m otor application. It features MOS-FET dri ve
circuit for better saturation characteristics. Slew late of amplifiers
and feedback resistors are optimized to achie ve low-noise moto
operation.

NJU7332 adopt a very small FFP package, therefore it is

suitable for micro motor applications.

FEATURES

■■■■

• Sin gle S upp ly

• Operating Voltage V

• Low Operating Current

• Low Saturation Output Voltage

• C-M OS Technology

• Package Outline FFP12 (2×2×0 .85mm)

■■■■

PIN CONFIGURATIONS

=2.4 ∼ 5.5V

DD

Vsat=±0.2V @Io=±100mA

VDD

OUT B

VDD

■■■■

Preliminary

PACKA GE OUTLINE

VDD

NJU7332PB1

OUT A

Ver.2003-03-19

OUT B

IN+

12pin

1

in

VSS

Top view

VSS

IN-

OUT

IN-

-1 -

NJU7332

Preliminary

■■■■

ABUSOLUTE MAXI MUM RA TINGS (Ta=25°C)

PARAMETER RATINGS SYNBOL(unit) NOTE

Supply Voltage +7.0 V

Input V olt age

Operating Temperature Range

Storage Temperature Range

-0.3 ∼ V

DD

-40 ∼ +85

-50 ∼ +1 50

+0.3

(V)

DD

V

(V)

ID

T opr (
Tstg (

°C

°C

)
)

Power Dissi patio n 300 PD (mW) 1)

1) When mounted on a grass epoxy board.

■■■■

RECOMMENDED OPERATING CONDITIONS

=2.4V∼5.5V

V

DD

■■■■

ELECTRICAL CHARA CTERISTICS (V

+

=5V , T a=25°C)

PARAMETER SYSMBOL CONDITION MIN. TYP. MAX. UNIT

Operating Current IDD - - 3.0 4.0 mA

Input Offset Voltage VIO - -10 - -10 mV

Input Common Mode

Voltage Range

-

V

ICM

0.4∼4.0

- - V

Maximum Output

Io=+100mA 4.70 4.80 - V

V

Voltage Range

OM

Feedback Resistance

R

F

Io= -100mA - 0.20 0.30

- 22.0 27.5 33.0

kΩ

Open Loop Gain

Av - - 80 - dB

- 2 -

Ver.2003-03-19