1FEATURES
2• Single-Cell 0.9V to 2.5V Battery Operation
• BTL Mode for Mono Speaker
• Single-Ended Headphone Operation with
Coupling Capacitors
• Unity-Gain Stable
• "Click and Pop" Suppression Circuitry
• Active-Low Micropower Shutdown
• Low Current, Active-Low Mute Mode
• Thermal Shutdown Protection Circuitry

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

KEY SPECIFICATIONS
• Mono-BTL Output Power
• (R L=8Ω, VDD=1.5V, THD+N=1%), 85mW (typ)
• Stereo Headphone Output Power
• (RL=16Ω, VDD=1.5V, THD+N=1%), 14mW (typ)
• Micropower Shutdown Current, 0.02μA (typ)
• Supply Voltage Operating Range,
0.9V• PSRR 1kHz, VDD=1.5V, 66dB (typ)

DESCRIPTION
The unity gain stable LM4916 is both a mono
differential output (for bridge-tied loads or BTL) audio
power amplifier and a Single Ended (SE) stereo
headphone amplifier. Operating on a single 1.5V
supply, the mono BTL mode delivers 85mW into an
8Ω load at 1% THD+N. In Single Ended stereo
headphone mode, the amplifier delivers 14mW per
channel into a 16Ω load at 1% THD+N.
With the LM4916 packaged in the MM and WSON
packages, the customer benefits include low profile
and small size. These packages minimize PCB area
and maximizes output power.
The LM4916 features circuitry that reduces output
transients ("clicks" and "pops") during device turn-on
and turn-off, an externally controlled, low-power
consumption, active-low shutdown mode, and thermal
shutdown. Boomer audio power amplifiers are designed specifically to use few external components
and provide high quality output power in a surface
mount package.