厂商NJR 半导体集成电路 - IC NJU72501 数据手册，datasheet pdf下载

型号：	NJU72501
厂商：	NJR
分类：	半导体，集成电路 - IC
描述：	audio amplifiers piezo-sounder dvr w/ mlti-mode chrg pump
PDF：	预览
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Datasheet下载地址

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NJU72501的详细信息

Manufacturer：	NJR
Product Category：	Audio Amplifiers
Product：	Audio Line Drivers / Receivers
Type：	Single Ended Stereo
Operating Supply Voltage：	3 V
Maximum Operating Temperature：	+ 85 C
Mounting Style：	SMD/SMT
Package / Case：	QFN-12
Brand：	NJR
Maximum Power Dissipation：	1300 mW
Minimum Operating Temperature：	- 40 C
Output Signal Type：	Differential, Single
Series：	NJU7250
Factory Pack Quantity：	1500
Supply Current：	7.9 mA
Supply Voltage - Max：	5 V
Supply Voltage - Min：	2.3 V
Tradename：	NJU725

NJU72501

Piezo-sounder Driver with Multi-mode charge pump

Q GENERAL DESCRIPTION

Q PACKAGE OUTLINE

The NJU72501 is a switching driver with multi mode charge pump

for piezo-sounder. It can drive outputs up to 18Vpp from 3V supply.

For adjusting the piezoelectric sounder sound volume, the charge

pump can operate in either of a 1x, 2x or 3x mode.

Because NJU72501 has the shutdown function, it is suitable for

the battery application.

NJU72501MJE

Q APPLICATION

Healthcare, Wrist Watches, Alarm Clocks, Handheld GPS devices, PDAs

Q FEATURES

O Operating Voltage

: 2.3 to 5.0V

O Consumption current (Active) : I_DS=0.3mA typ. (VIN=3V, DIN=4kHz, C_PIEZO=15nF, 1x Mode)

(Shutdown): I_DS=1uA max. (VIN=3V , DIN=0V)

O Multi-Mode Charge Pump (1x/2x/3x)

O Input Signal Detector & Shutdown Control

O Output Short-circuit Protection Circuit

O C-MOS Technology

O Package Outline

: EQFN12-JE

Q BLOCK DIAGRAM

C₁=0.1uF

C₂=0.1uF

CP1

CN1 CP2 CN2

VIN

C_IN=0.1uF

Oscillator

(1MHz)

Charge Pump

(1x / 2x / 3x)

VOUT

C_OUT=0.1uF

EN1

EN2

Control

Logic

1.7MΩ

Short Circuit

Protection

DET

DIN

VO1

VO2

piezo sounder

Level Shift

GND

Ver. 5.3

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