1FEATURES
23• 2-Cell 1.5V to 3.6V Battery Operation
• OCL Mode for Stereo Headphone Operation
• Unity-Gain Stable
• “Click and Pop” Suppression Circuitry for
Shutdown On and Off Transients
• Active Low Micropower Shutdown
• Thermal Shutdown Protection Circuitry

APPLICATIONS
• Portable Two-Cell Audio Products
• Portable Two-Cell Electronic Devices

KEY SPECIFICATIONS
• OCL Output Power
– (RL = 16Ω, VDD = 3.0V, THD+N = 1%),
40mW (Typ)
• Micropower Shutdown Current, 0.1μA (Typ)
• Supply Voltage Operating Range,
1.5V < VDD < 3.6V
• PSRR 100Hz, VDD = 3.0V, AV = 2.5, 66dB (Typ)

DESCRIPTION
The LM4924 is a Output Capacitor-Less (OCL) stereo
headphone amplifier, which when connected to a
3.0V supply, delivers 40mW per channel to a 16Ω
load with less than 1% THD+N.
With the LM4924 packaged in the VSSOP and SON
packages, the customer benefits include low profile
and small size. These packages minimizes PCB area
and maximizes output power.
The LM4924 features circuitry that reduces output
transients (“clicks” and “pops”) during device turn-on
and turn-off, and Mute On and Off. An externally
controlled, low-power consumption, active-low
shutdown mode is also included in the LM4924.
Boomer audio power amplifiers are designed
specifically to use few external components and
provide high quality output power in a surface mount
packages.