LM4866MT National Semiconductor, LM4866MT Datasheet
LM4866MT
Available stocks
Related parts for LM4866MT
LM4866MT Summary of contents
Page 1
... The other package options for the LM4866 will deliver 1.1W into 8Ω. See the Application Information sections for further information concerning the LM4866MTE and LM4866LQ. Note 2: An LM4866MTE or LM4866LQ that has been properly mounted to a circuit board will deliver 2.5W into 3Ω. Typical Application Note: Pin out shown for LLP package ...
Page 2
... Connection Diagrams See NS Package Number LQA24A for Exposed-DAP LLP See NS Package Number MXA20A for Exposed-DAP TSSOP www.national.com 20018629 Top View Order Number LM4866MT See NS Package Number MTC20 for TSSOP 20018630 Top View Order Number LM4866LQ 20018643 Top View Order Number LM4866MTE 2 ...
Page 3
... L LM4866LQ 4Ω L LM4866MT 8Ω L THD 1kHz LM4866MTE 3Ω L LM4866LQ 3Ω L LM4866MTE 4Ω L LM4866LQ 4Ω L LM4866MT 8Ω 42˚C/W (Note 7) 41˚C/W (Note 8) 51˚C/W (Note 9) 90˚C/W (Note 10) ≤ T −40˚C ≤ T ...
Page 4
... Note 14: The quiescent power supply current depends on the offset voltage when a practical load is connected to the amplifier. Note 15: Output power is measured at the device terminals. Note 16: When driving 3Ω or 4Ω loads and operating supply, the LM4866LQ and LM4866MTE must be mounted to a circuit board that has a minimum of 2 2.5in of exposed, uninterrupted copper area connected to the package’ ...
Page 5
Typical Performance Characteristics LQ Specific Characteristics LM4866LQ THD+N vs Output Power LM4866LQ THD+N vs Output Power LM4866LQ Power Dissipation vs Power Output Note 17: This curve shows the LM4866LQ’s thermal dissipation ability at different ambient temperatures given this condition: 2 ...
Page 6
... Power Dissipation vs Power Output Note 18: This curve shows the LM4866MTE’s thermal dissipation ability at different ambient temperatures given these conditions: 500LFPM + JEDEC board: The part is soldered to a 1S2P 20-lead exposed-DAP TSSOP test board with 500 linear feet per minute of forced-air flow across it ...
Page 7
Typical Performance Characteristics THD+N vs Frequency THD+N vs Output Power THD+N vs Output Power 20018603 20018661 20018660 7 THD+N vs Output Power 20018606 THD+N vs Frequency 20018663 THD+N vs Frequency 20018662 www.national.com ...
Page 8
Typical Performance Characteristics Output Power vs Supply Voltage Power Dissipation vs Output Power Power Derating Curve www.national.com (Continued) 20018609 20018614 20018616 8 Output Power vs Load Resistance 20018612 Dropout Voltage vs Supply Voltage 20018615 Noise Floor 20018618 ...
Page 9
Typical Performance Characteristics Channel Separation Open Loop Frequency Response External Components Description (Refer to Figure 1.) Components 1. R The Inverting input resistance, along with R i filter with f = 1/(2π The input coupling capacitor blocks ...
Page 10
... LM4866MTE can continuously drive a 3Ω load to full power. The LM4866LQ achieves the same output power www.national.com level without forced air cooling. In all circumstances and conditions, the junction temperature must be held below 150˚ ...
Page 11
Application Information * Refer to the section Proper Selection of External Components, for a detailed discussion of C FIGURE 1. Typical Audio Amplifier Application Circuit Pin out shown for the LLP package. Refer to the Connection Diagrams for the pinout ...
Page 12
Application Information fier. From Equation (3), assuming a 5V power supply and an 4Ω load, the maximum single channel power dissipation is 1.27W or 2.54W for stereo operation (2π R DMAX ...
Page 13
Application Information SELECTING PROPER EXTERNAL COMPONENTS Optimizing the LM4866’s performance requires properly se- lecting external components. Though the LM4866 operates well when using external components with wide tolerances, best performance is achieved by optimizing component val- ues. The LM4866 is ...
Page 14
Application Information AUDIO POWER AMPLIFIER DESIGN Audio Amplifier Design: Driving 1W into an 8Ω Load The following are the desired operational parameters: Power Output: Load Impedance: Input Level: Input Impedance: Bandwidth: 100Hz−20 kHz The design begins by specifying the minimum ...
Page 15
Application Information FIGURE 2. Recommended LQ PC board layout: Component-side Silkscreen FIGURE 3. Recommended LQ PC board layout: Component-side layout (Continued) FIGURE 4. Recommended LQ PC board layout: 20018631 FIGURE 5. Recommended LQ PC board layout: 20018632 15 20018633 upper ...
Page 16
Application Information FIGURE 6. Recommended LQ PC board layout: bottom-side layout FIGURE 7. Recommended MTE board layout: component-side silkscreen www.national.com (Continued) FIGURE 8. Recommended MTE PC board layout: 20018635 FIGURE 9. Recommended MTE board layout: 20018644 16 20018645 component-side layout ...
Page 17
Application Information FIGURE 10. Recommended MTE PC board layout: lower inner-layer layout FIGURE 11. Recommended MTE board layout: bottom-side layout (Continued) 20018647 FIGURE 12. Recommended MT PC board layout: 20018648 FIGURE 13. Recommended MT board layout: 17 20018649 component-side silkscreen ...
Page 18
Application Information www.national.com (Continued) FIGURE 14. Recommended MT PC board layout: bottom-side layout 18 20018650 ...
Page 19
Revision History Rev 1.1 Date 04/28/05 Changed (min) to (max) for I 19 Description units SD www.national.com ...
Page 20
... Physical Dimensions 20-Lead Molded PKG, TSSOP, JEDEC, 4.4mm BODY WIDTH 20-Lead Molded TSSOP, Exposed Pad, 6.5x4.4x0.9mm www.national.com inches (millimeters) unless otherwise noted Order Number LM4866MT NS Package Number MTC20 Order Number LM4866MTE NS Package Number MXA20A 20 ...
Page 21
... BANNED SUBSTANCE COMPLIANCE National Semiconductor manufactures products and uses packing materials that meet the provisions of the Customer Products Stewardship Specification (CSP-9-111C2) and the Banned Substances and Materials of Interest Specification (CSP-9-111S2) and contain no ‘‘Banned Substances’’ as defined in CSP-9-111S2. ...