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LM48511SQ Datasheet(PDF) 5 Page - Texas Instruments |
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LM48511SQ Datasheet(HTML) 5 Page - Texas Instruments |
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5 / 28 page  ÌLM48511 www.ti.com SNAS416H – JULY 2007 – REVISED AUGUST 2015 6.5 Electrical Characteristics VDD = 5 V The following specifications apply for VDD = 5 V, PV1 = 7.8 V (continuos mode), AV = 2 V/V, R3 = 25.5 kΩ, RLS = 4.87 kΩ, RL = 8 Ω, f = 1 kHz, SS/FF = GND, unless otherwise specified. Limits apply for TA = 25°C. (1) PARAMETER TEST CONDITIONS MIN TYP(2) MAX UNIT Fixed Frequency Mode (FF) 13.5 mA Quiescent Power Supply IDD VIN = 0, RLOAD = ∞ Current Spread Spectrum Mode (SS) 14.5 22 mA ISD Shutdown Current(3) VSD_BOOST = VSD_AMP = SS = FB_SEL = GND 0.11 1 μA VIH Logic Voltage Input High 1.4 V VIL Logic Voltage Input Low 0.4 V TWU Wake-up Time CSS = 0.1 μF 49 ms VOS Output Offset Voltage See (4) 0.01 3 mV RL = 8 Ω FF 3 f = 1 kHz, BW = 22 kHz W SS 2.6 3 THD+N = 1% RL = 8 Ω FF 3.8 f = 1 kHz, BW = 22 kHz W SS 3.8 THD+N = 10% PO Output Power RL = 4 Ω FF 5.4 f = 1 kHz, BW = 22 kHz W SS 5.4 THD+N = 1% RL = 4 Ω FF 6.7 f = 1 kHz, BW = 22 kHz W SS 6.7 THD+N = 10% FF 0.03% PO = 2 W, f = 1 kHz, RL = 8 Ω SS 0.03% Total Harmonic THD+N Distortion + Noise FF 0.04% PO = 3 W, f = 1 kHz, RL = 4 Ω SS 0.05% f = 20 Hz to 20 kHz FF 32 Inputs to AC GND, No µVRMS SS 32 weighting εOS Output Noise f = 20 Hz to 20 kHz FF 22 Inputs to AC GND, A µVRMS SS 22 weighted VRIPPLE = 200 mVP-P FF 88 Sine, dB SS 87 fRIPPLE = = 217 Hz Power Supply Rejection VRIPPLE = 200 mVP-P FF 88 PSRR Ratio Sine, dB SS 85 (Input Referred) fRIPPLE = = 1 kHz VRIPPLE = 200 mVP-P FF 77 Sine, dB SS 76 fRIPPLE = = 10 kHz Common-Mode VRIPPLE = 1 VP-P, fRIPPLE = 217 Hz CMRR Rejection Ratio 73 dB (Input Referred) η Efficiency f = 1 kHz, RL = 8 Ω, PO = 1 W 80% Feedback Pin Reference VFB 1.23 V Voltage(5) (1) RL is a resistive load in series with two inductors to simulate an actual speaker load for RL = 8Ω, the load is 15μH+8Ω+15μH. For RL = 4 Ω, the load is 15 μH + 4 Ω + 15 μH. (2) Typical values represent most likely parametric norms at TA = +25ºC, and at the Recommended Operation Conditions at the time of product characterization and are not specified. (3) Shutdown current is measured with components R1 and R2 removed. (4) Offset voltage is determined by: (IDD (with load) — IDD (no load)) x RL. (5) Feedback pin reference voltage is measured with the Audio Amplifier disconnected from the Boost converter (the Boost converter is unloaded). Copyright © 2007–2015, Texas Instruments Incorporated Submit Documentation Feedback 5 Product Folder Links: ÌLM48511 |
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