Datenblatt-Suchmaschine für elektronische Bauteile |
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LM20502SILR Datenblatt(PDF) 7 Page - Texas Instruments |
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LM20502SILR Datenblatt(HTML) 7 Page - Texas Instruments |
7 / 37 page LMZ20502 www.ti.com SNVS852C – JUNE 2012 – REVISED APRIL 2015 7.6 System Characteristics The following specifications apply to the circuit found in Figure 16 with the appropriate modifications from Table 2. These parameters are not tested in production and represent typical performance only. Unless otherwise stated the following conditions apply: TA = 25°C. PARAMETER TEST CONDITIONS MIN TYP MAX UNIT VOUT = 1.2 V, 0.4% VIN = 5 V, IOUT = 0 A to 2 A, PWM Load Percent output voltage change VOUT = 1.8 V 0.4% Regulation for the given load current change VIN = 5 V, IOUT = 0 A to 2 A, PWM VOUT = 3.3 V 0.2% VIN = 5 V, IOUT = 0 A to 2 A, PWM VOUT = 1.2 V 0.2% IOUT = 2 A, VIN = 3 V to 5 V, PWM Percent output voltage change Line VOUT = 1.8 V for the given change in input 0.15% Regulation IOUT = 2 A, VIN = 3 V to 5 V, PWM voltage VOUT = 3.3 V 0.18% IOUT = 2 A,VIN = 4 V to 5 V, PWM VOUT = 1.2 V 3.3 IOUT = 1 A, VIN = 5 V, PWM VOUT = 1.8 V VR-PWM Output voltage ripple in PWM 3.3 mV pk-pk IOUT = 1 A, VIN = 5 V, PWM VOUT = 3.3V 4.2 IOUT= 1 A, VIN = 5 V, PWM VOUT = 1.2V 22 IOUT= 1 mA, VIN = 3 V, PFM VOUT = 1.8 V VR-PFM Output voltage ripple in PFM 22 mV pk-pk IOUT= 1 mA, VIN=3 V, PFM VOUT = 3.3 V 40 IOUT = 1 mA, VIN = 5 V, PFM VOUT = 1.2 V VIN = 5 V, IOUT = 0 A to 2 A, Tr = Tf = 2 µs, ±115 PWM Output voltage deviation from VOUT = 1.8 V Load nominal due to a load current VIN = 5 V, IOUT = 0 A to 2 A, Tr = Tf = 2 µs, ±100 mV Transient step PWM VOUT = 3.3 V VIN = 5 V, IOUT = 0 A to 2 A, Tr = Tf = 2 µs, ±150 PWM VOUT = 1.2V IOUT = 1 A, VIN = 3 V to 5 V, Tr = Tf = 50 25 µs, PWM VOUT = 1.8 V Line Output voltage deviation due to IOUT = 1 A, VIN = 3 V to 5 V, Tr = Tf = 50 30 mV pk-pk Transient an input voltage step µs, PWM VOUT = 3.3 V IOUT = 1 A, VIN = 4 V to 5 V, Tr = Tf = 50 20 µs, PWM VOUT = 1.2 V 87% VIN = 3 V VOUT = 1.8 V Peak efficiency 91% VIN = 3 V VOUT = 3.3 V 94% VIN = 4.2 V η VOUT = 1.2 V 74% VIN = 3 V, IOUT = 2 A VOUT = 1.8 V Full load efficiency 79% VIN = 3 V, IOUT = 2 A VOUT = 3.3 V 89% VIN = 4.2 V, IOUT = 2 A Copyright © 2012–2015, Texas Instruments Incorporated Submit Documentation Feedback 7 Product Folder Links: LMZ20502 |
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