lm4801 National Semiconductor Corporation, lm4801 Datasheet
lm4801
Related parts for lm4801
lm4801 Summary of contents
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... It is designed for low power, low current applications that can take advantage of its 300mA output current capability. The LM4801 features an externally controlled micropower shutdown mode and thermal shutdown protection. It also utilizes circuitry that reduces "clicks and pops" during device turn-on and return from shutdown ...
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Typical Application www.national.com 2 20073601 ...
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... I ≤ 300mA OUT 0.5V (Note SET = OUT Average DC Current Rating 3 ≤ T −40˚C ≤ MAX A 3.0V ≤ 2.5V ≤ (Notes 25˚C. A LM4801 Typical Limit (Note 6) (Note (max) 3.5 mA (min) 0.07 2 µA (min (max) 1.1 1.0 1.5 0. ...
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... The maximum for the LM4801 in the 28-pin MXA28A package, when board 0.5V. Dropout Voltage does not apply to the 1 33nF, Units µA µA mV %/V %/mA µV RMS nV ...
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Stereo Amplifier Typical Performance Characteristics THD+N vs Frequency 8Ω OUT THD+N vs Frequency V = 5.5V 8Ω OUT THD+N vs Output Power ...
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Stereo Amplifier Typical Performance Characteristics Output Power vs Supply Voltage R = 8Ω 1kHz, at (from top to bottom at 4.5V THD+N = 10%, THD Power Dissipation vs Load Dissipation V = 5V, f ...
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Stereo Amplifier Typical Performance Characteristics Cross Talk 8Ω 150mW, at (from top to bottom DD L OUT at 2kHz): -IN A driven, V measured; OUTB -IN B driven, V measured OUTA PSRR vs ...
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Stereo Amplifier Typical Performance Characteristics Open Loop Frequency Response www.national.com Power Supply Current vs Power Supply Voltage ∞ 20073622 L 8 (Continued) 20073635 = 50Ω SOURCE IN ...
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LDO Typical Performance Characteristics C = 2.2µ 33nF 25˚C, V OUT CC J Dropout Voltage vs. Load Current (For Different Output Voltages) FAULT Detect Threshold vs. Load Current Supply Current vs. Load Current Unless otherwise specified, ...
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LDO Typical Performance Characteristics C = 2.2µ 33nF 25˚C, V OUT CC J Output Noise Spectral Density Output Impedance vs. Frequency Load Transient www.national.com Unless otherwise specified (Continued) SHDN IN Output Noise ...
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LDO Typical Performance Characteristics C = 2.2µ 33nF 25˚C, V OUT CC J Power-Up Response External Components Description (Refer to Figure 1.) Components 1. R The Inverting input resistance, along with R i filter with f ...
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... FIGURE 1. Typical Audio Amplifier Application Circuit Pin out shown for the LLP package. Refer to the Connection Diagrams for the pinout of the TSSOP package. BRIDGE CONFIGURATION EXPLANATION As shown in Figure 1 , the LM4801 consists of two pairs of operational amplifiers, forming a two-channel (channel A and channel B) stereo amplifier. (Though the following discusses channel A, it applies equally to channel B ...
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... Bridge Mode DMAX DD L The LM4801’s power dissipation is twice that given by Equa- tion (2) or Equation (3) when operating in the single-ended mode or bridge mode, respectively. Twice the maximum power dissipation point given by Equation (3) must not ex- ceed the power dissipation given by Equation (4): P ’ ...
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... As an example when using a speaker with a low frequency limit of 150Hz using Equation (4), is 0.063µF. The 1.0µ shown in Figure 1 allows the LM4801 to drive high effi- I ciency, full range speaker whose response extends below 30Hz. Bypass Capacitor Value Selection Besides minimizing the input capacitor size, careful consid- eration should be paid to value of C nected to the BYPASS pin ...
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... Power Dissipation section. After satisfying the LM4801’s power dissipation require- ments, the minimum differential gain is found using Equation (10). Thus, a minimum gain of 2.83 allows the LM4801’s to reach full output swing and maintain low noise and THD+N perfor- mance. For this example, let ...
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... The challenge posed by low ESR O capacitors is that the zero it generates can be too high in frequency for the pole that it’s intended to compensate. The LM4801 overcomes this challenge by internally generating a strategically placed zero. 200736B6 FIGURE 4. Simplified Model of Regulator Figure 4 shows a basic model for the linear regulator that helps describe what happens to the output signal processed through its feedback loop ...
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... PD is the power exerted by the IC, and T ambient temperature calculated as follows: 200736B8 for the LM4801 package (MSOP-8) is 223˚C/W with no θ JA forced air flow, 182˚C/W with 225 linear feet per minute (LFPM) of air flow, 163˚C/W with 500 LFPM of air flow, and 149˚ ...
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... CC pin of the LM4801. REF Shutdown The LM4801’s LDO goes into sleep mode when the SHDN pin logic low condition. During this condition, the pass transistor, error amplifier, and bandgap are turned off, reduc- ing the supply current to 1nA typical. The maximum guaran- teed voltage for a logic low at the SHDN pin is 0 ...
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Application Information +OUTB pads. Apply the stereo input signal to the input pins labeled "-INA" and "-INB." The stereo input signal’s ground references are connected to the respective input channel’s "GND" pin, adjacent to the input pins. FIGURE 8. Recommended ...
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... National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications. inches (millimeters) unless otherwise noted Order Number LM4801MH NS Package Number MXA28A 2 ...