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LM4961

Features: ` Pop & click circuitry eliminates noise during turn-on and turn-off transitions` Low current shutdown mode` Low quiescent current` Mono 15Vp-p BTL output, RL = 2F+30, f = 1kHz` Thermal shutdown protection` Unity-gain stable` External gain configuration capability` Including Band exc...

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SeekIC No. : 004395919 Detail

LM4961: Features: ` Pop & click circuitry eliminates noise during turn-on and turn-off transitions` Low current shutdown mode` Low quiescent current` Mono 15Vp-p BTL output, RL = 2F+30, f = 1kHz` Therma...

LM4961 Data Sheet

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Part Number:
LM4961
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:

` Pop & click circuitry eliminates noise during turn-on and turn-off transitions
` Low current shutdown mode
` Low quiescent current
` Mono 15Vp-p BTL output, RL = 2F+30, f = 1kHz
` Thermal shutdown protection
` Unity-gain stable
` External gain configuration capability
` Including Band exchange SW
` Including Leakage cut SW


Application

· Cellphone
· PDA


Specifications

Supply Voltage (Vdd) ..........................6.0V
Amplifier Supply Voltage (V1) ......................9.5V
Storage Temperature ..................−65°C to +150°C
Input Voltage  .....................−0.3V to VDD + 0.3V
Power Dissipation (Note 3) ................ Internally limited
ESD Susceptibility (Note 4) ......................2000V
ESD Susceptibility (Note 5)  ...................... 200V
Junction Temperature........................ 150°C
Thermal Resistance
JA (LLP)  ............................. 66°C/W
See AN-1187 'Leadless Leadframe Packaging (LLP).'


Description

The LM4961 is an audio power amplifier primarily designed for driving Ceramic Speaker for applications in Cell Phone and PDAs. It integrates a boost converter, with variable output voltage, with an audio power amplifier. It is capable of driving 15Vp-p in BTL mode to 2uF+ 30 ohms load, continuous average power, with less than 1% distortion (THD+N) from a 3.2VDC power supply.

Boomer audio power amplifiers were designed specifically to provide high quality output power with a minimal number of external components. The LM4961 does not require bootstrap capacitors, or snubber circuits therefore it is ideally suited for portable applications requiring high voltage output to drive capacitive loads like Ceramic Speakers. The LM4961 features a low-power consumption shutdown mode. Additionally, the LM4961 features an internal thermal shutdown protection mechanism.

The LM4961 contains advanced pop & click circuitry that eliminates noises which would otherwise occur during turn-on and turn-off transitions.

The LM4961 is unity-gain stable and can be configured by external gain-setting resistors.




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