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NJU8753

Features: 􀁺 Piezo Speaker Driving􀁺 Output voltage: 8Vrms(Typ.) @VDDO=10.0V􀁺 1-channel Analog Signal Input, 1-channel BTL output􀁺 Standby(Hi-Z),􀁺 Built-in DC-DC Converter􀁺 Built-in Low Voltage Detector􀁺 Built-in Short Protector􀁺...

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SeekIC No. : 004434593 Detail

NJU8753: Features: 􀁺 Piezo Speaker Driving􀁺 Output voltage: 8Vrms(Typ.) @VDDO=10.0V􀁺 1-channel Analog Signal Input, 1-channel BTL output􀁺 Standby(Hi-Z),􀁺 Built-in...

NJU8753 Data Sheet

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Part Number:
NJU8753
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

􀁺 Piezo Speaker Driving
􀁺 Output voltage: 8Vrms(Typ.) @VDDO=10.0V
􀁺 1-channel Analog Signal Input, 1-channel BTL output
􀁺 Standby(Hi-Z),
􀁺 Built-in DC-DC Converter
􀁺 Built-in Low Voltage Detector
􀁺 Built-in Short Protector
􀁺 Operating Voltage :2.6~3.6V(VDD, VREG)
                                  :2.6~4.2V(VBAT)
􀁺 CMOS Technology
􀁺 Package Outline    :QFN28


Pinout

Connection Diagram


Specifications

PARAMETER SYMBOL RATING UNIT
Supply Voltage VDD
VREG
VDDO		 -0.3 ~ +4.0
-0.3 ~ +4.0
-0.3 ~ +15.0		 V
V
V
LX Input Voltage VLX -0.3 ~ +15.0 V
FB Input Voltage VFB -0.3 ~ +4.0 V
Input Voltage Vin -0.3 ~ VDD+0.3 V
Operating Temperature Topr -40 to +85
Storage Temperature Tstg -40 to +125
Power Dissipation PD 640* mW

Note 1) All voltage are relative to "VSS= 0V" reference.
Note 2) The LSI must be used inside of the "Absolute maximum ratings". Otherwise, a stress may cause  permanent damage to the LSI.
Note 3) De-coupling capacitors for VDD(Pin 28)-VSS(Pin 27), VREG(Pin 3)-VSS(Pin 5) and LX(Pin 8,9)-VSS(Pin 17,18,19) should be connected for stable operation.




Description

The NJU8753 is an analog signal input class D power amplifier with DC-DC converter for Piezo speaker. Input part operates on 2.85V(typ) and a built-in DC-DC converter generates variable output voltage(up to 12V) with input voltage(2.6 to 4.2V). Therefore, it drives Piezo speaker with louder sound and high efficiency.

The NJU8753 incorporates BTL amplifier, which eliminate AC coupling capacitors, capable of driving monaural Piezo speaker with simple external LC low-pass filters.

Class D operation achieves lower power operation for Piezo speaker, thus the NJU8753 is suited for batterypowered applications.




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