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LM48823

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Mono, analog input, ceramic speaker driver with I2C volume control & integrated 5.4-V charge pump

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Data sheet

LM48823

ACTIVE
Data sheet Order now

Product details

Analog supply (min) (V) 2 Analog supply voltage (max) (V) 4.5 Speaker channels (max) Mono Audio input type Analog Shutdown current (ISD) (µA) 0.01 PSRR (dB) 93 Iq (typ) (mA) 3.3 Operating temperature range (°C) to Rating Catalog
Analog supply (min) (V) 2 Analog supply voltage (max) (V) 4.5 Speaker channels (max) Mono Audio input type Analog Shutdown current (ISD) (µA) 0.01 PSRR (dB) 93 Iq (typ) (mA) 3.3 Operating temperature range (°C) to Rating Catalog
DSBGA (YZR) 16 5.0625 mm² 2.25 x 2.25

  • Integrated Charge Pump
  • Bridge-tied Load Output
  • High PSRR
  • I 2 C Volume and Mode Control
  • Reset Input
  • Advanced Click-and-Pop Suppression
  • Low Supply Current
  • Minimum external components
  • Micro-power shutdown
  • Available in space-saving 16-bump µSMD package
    •

  • Integrated Charge Pump
  • Bridge-tied Load Output
  • High PSRR
  • I 2 C Volume and Mode Control
  • Reset Input
  • Advanced Click-and-Pop Suppression
  • Low Supply Current
  • Minimum external components
  • Micro-power shutdown
  • Available in space-saving 16-bump µSMD package
    •

    The LM48823 is a single supply, mono, ceramic speaker driver with an integrated charge-pump, designed for portable devices, such as cell phones, where board space is at a premium. The LM48823 charge pump allows the device to deliver 5.4VRMS from a single 4.2V supply.

    The LM48823 features high power supply rejection ratio (PSRR), 93dB at 217Hz, allowing the device to operate in noisy environments without additional power supply conditioning. Flexible power supply requirements allow operation from 2.0V to 4.5V. The LM48823 features an active low reset input that reverts the device to its default state. Additionally, the LM48823 features a 32-step I 2C volume control. The low power Shutdown mode reduces supply current consumption to 0.01µA.

    The LM48823’s superior click and pop suppression eliminates audible transients on power-up/down and during shutdown. The LM48823 is available in an ultra-small 16-bump micro SMD package (2mmx2mm).

    Key Specifications

    ■  Output Voltage at VDD = 4.2V,  RL = 2.2µF + 15Ω THD+N ≤ 1% 5.4VRMS (typ)
    ■  Quiescent Power Supply Current  at 4.2V 3.3mA (typ)
    ■  PSRR at 217Hz 93dB (typ)
    ■  Shutdown current 0.01μA (typ)

    The LM48823 is a single supply, mono, ceramic speaker driver with an integrated charge-pump, designed for portable devices, such as cell phones, where board space is at a premium. The LM48823 charge pump allows the device to deliver 5.4VRMS from a single 4.2V supply.

    The LM48823 features high power supply rejection ratio (PSRR), 93dB at 217Hz, allowing the device to operate in noisy environments without additional power supply conditioning. Flexible power supply requirements allow operation from 2.0V to 4.5V. The LM48823 features an active low reset input that reverts the device to its default state. Additionally, the LM48823 features a 32-step I 2C volume control. The low power Shutdown mode reduces supply current consumption to 0.01µA.

    The LM48823’s superior click and pop suppression eliminates audible transients on power-up/down and during shutdown. The LM48823 is available in an ultra-small 16-bump micro SMD package (2mmx2mm).

    Key Specifications

    ■  Output Voltage at VDD = 4.2V,  RL = 2.2µF + 15Ω THD+N ≤ 1% 5.4VRMS (typ)
    ■  Quiescent Power Supply Current  at 4.2V 3.3mA (typ)
    ■  PSRR at 217Hz 93dB (typ)
    ■  Shutdown current 0.01μA (typ)

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    Technical documentation

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    Type Title Date
    * Data sheet Mono, Bridge-Tied Load, Ceramic Speaker Driver w/I2C Volume Control and Reset datasheet (Rev. E) 08 Oct 2010

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