Image NJU72501
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
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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) : IDS=0.3mA typ. (VIN=3V, DIN=4kHz, CPIEZO=15nF, 1x Mode)  
(Shutdown): IDS=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  
CIN=0.1uF  
Oscillator  
(1MHz)  
Charge Pump  
(1x / 2x / 3x)  
VOUT  
COUT=0.1uF  
EN1  
EN2  
Control  
Logic  
1.7M  
1.7MΩ  
Short Circuit  
Protection  
DET  
DIN  
VO1  
VO2  
piezo sounder  
Level Shift  
GND  
Ver. 5.3  
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