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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
1.7MΩ
1.7MΩ
Short Circuit
Protection
DET
DIN
VO1
VO2
piezo sounder
Level Shift
GND
Ver. 5.3
- 1 -
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