Product Summary

The LM4990MM is an audio power amplifier primarily designed for demanding applications in mobile phones and other portable communication device applications. It is capable of delivering 1.25 watts of continuous average power to an 8Ω BTL load and 2 watts of continuous average power (LD and MH only) to a 4Ω BTL load with less than 1% distortion (THD+N+N) from a 5VDC power supply.

Parametrics

Absolute maximum ratings: (1)Supply Voltage: 6.0V; (2)Storage Temperature: -65℃ to +150℃; (3)Input Voltage: -0.3V to VDD +0.3V; (4)Power Dissipation: Internally Limited; (5)ESD Susceptibility: 2000V; (6)ESD Susceptibility: 200V; (7)Junction Temperature: 150℃; (8)Thermal Resistance: θJC (MSOP) 56℃/W, θJA (MSOP) 190℃/W, θJA (9 Bump micro SMD) 180℃/W, θJA (LLP) 63℃/W, θJC (LLP) 12℃/W.

Features

Features: (1)Available in space-saving packages: LLP, Exposed-DAP TSSOP, MSOP, and ITL; (2)Ultra low current shutdown mode; (3)Improved pop & click circuitry eliminates noise during turn-on and turn-off transitions; (4)2.2 - 5.5V operation; (5)No output coupling capacitors, snubber networks or bootstrap capacitors required; (6)Unity-gain stable; (7)External gain configuration capability; (8)User selectable shutdown High or Low logic Level.

Diagrams

Image Part No Mfg Description Data Sheet Download Pricing
(USD)		 Quantity
LM4990MM
LM4990MM
National Semiconductor (TI)
Audio Amplifiers
Data Sheet
0-1000: $0.29
1000-3000: $0.27
3000-5000: $0.26
5000-10000: $0.24
LM4990MM/NOPB
LM4990MM/NOPB
National Semiconductor (TI)
Audio Amplifiers
Data Sheet
0-1: $0.63
1-25: $0.50
25-100: $0.44
100-250: $0.39
LM4990MMX
LM4990MMX
National Semiconductor (TI)
Audio Amplifiers
Data Sheet
0-3500: $0.27
3500-7000: $0.26
7000-10500: $0.24
LM4990MMX/NOPB
LM4990MMX/NOPB
National Semiconductor (TI)
Audio Amplifiers
Data Sheet
0-2500: $0.25
2500-3500: $0.25
3500-5000: $0.24
5000-10000: $0.23