Piezo-sounder Driver. NJU72501 Datasheet

NJU72501 Driver. Datasheet pdf. Equivalent

NJU72501 Datasheet
Recommendation NJU72501 Datasheet
Part NJU72501
Description Piezo-sounder Driver
Feature NJU72501; NJU72501 Piezo-sounder Driver with Multi-mode charge pump ■GENERAL DESCRIPTION The NJU72501 is a s.
Manufacture New Japan Radio
Datasheet
Download NJU72501 Datasheet




New Japan Radio NJU72501
NJU72501
Piezo-sounder Driver with Multi-mode charge pump
GENERAL DESCRIPTION
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.
PACKAGE OUTLINE
NJU72501MJE NJU72501MG2
APPLICATION
NJU72501V
Healthcare, Wrist Watches, Alarm Clocks, Handheld GPS devices, PDAs
FEATURES
Operating Voltage
: 2.3 to 5.0V(1x/ 2x Mode), 2.3 to 3.4V(3x Mode)
Consumption current (Active) : IDS=0.3mA typ. (VIN=3V, DIN=4kHz, CPIEZO=15nF, 1x Mode)
(Shutdown): IDS=1uA max. (VIN=3V , DIN=0V)
Multi-Mode Charge Pump (1x/2x/3x)
Input Signal Detector & Shutdown Control
Output Short-circuit Protection Circuit
C-MOS Technology
Package Outline
: EQFN12-JE, EQFN16-G2, SSOP14
Direct replacement to MAS6240
BLOCK DIAGRAM
VIN
CIN=0.1uF
EN1
EN2
DIN
GND
C1=0.1uF
C2=0.1uF
CP1 CN1 CP2
CN2
Oscillator
(1MHz)
Charge Pump
(1x / 2x / 3x)
1.7MΩ
Control
Logic
DET
Short Circuit
Protection
1.7MΩ
Level Shift
VOUT
COUT=0.1uF
VO1
piezo sounder
VO2
Ver. 7.1
-1-



New Japan Radio NJU72501
NJU72501
TERMINAL CONFIGURATION (EQFN12-JE)
7pin
10pin
Exposed Pad
(Back Side)
4pin
1pin
Top view
PIN DESCRIPTION
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
Exp Pad
SYMBOL
FUNCTION
EN1 Step-up Mode Switch Terminal 1
EN2 Step-up Mode Switch Terminal 2
DIN Input Terminal
CN1 Capacitor Connection Terminal
GND GND Terminal
VO2 Output Terminal 2
VO1 Output Terminal 1
CN2 Capacitor Connection Terminal
CP1 Capacitor Connection Terminal
VOUT Charge Pump Output Terminal
CP2 Capacitor Connection Terminal
VIN Power Supply Terminal
Exposed Pad Exposed Pad connected to GND or left floating
-2-
Ver.7.1



New Japan Radio NJU72501
TERMINAL CONFIGURATION (EQFN16-G2)
NNJUJU73250551
PIN DESCRIPTION
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Exp Pad
SYMBOL
FUNCTION
NC
EN1 Step-up Mode Switch Terminal 1
EN2 Step-up Mode Switch Terminal 2
DIN Input Terminal
NC
CN1 Capacitor Connection Terminal
GND GND Terminal
VO2 Output Terminal 2
VO1 Output Terminal 1
CN2 Capacitor Connection Terminal
CP1 Capacitor Connection Terminal
NC
VOUT Charge Pump Output Terminal
CP2 Capacitor Connection Terminal
VIN Power Supply Terminal
NC
Exposed Pad Exposed Pad connected to GND or left floating
Ver.7.1
-3-







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