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LP3871 Datasheet(PDF) 5 Page - Texas Instruments |
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LP3871 Datasheet(HTML) 5 Page - Texas Instruments |
5 / 26 page LP3871, LP3874 www.ti.com SNVS225H – FEBRUARY 2003 – REVISED JUNE 2015 6.5 Electrical Characteristics Unless otherwise specified: TJ = 25°C, VIN = VO(NOM) + 1 V, IL = 10 mA, COUT = 10 µF, VSD = 2 V. PARAMETER TEST CONDITIONS MIN(1) TYP(2) MAX(1) UNIT Output voltage tolerance(3) VOUT + 1 V ≤ VIN ≤ 7 V, 10 mA ≤ IL ≤ 0.8 A –1.5% 0% 1.5% VOUT VOUT + 1 V ≤ VIN ≤ 7 V, 10 mA ≤ IL ≤ 0.8 A, –3% 3% –40°C ≤ TJ ≤ 125°C Output voltage line regulation(3) VOUT + 1 V ≤ VIN ≤ 7 V 0.02% ΔVOL VOUT + 1 V ≤ VIN ≤ 7 V, –40°C ≤ TJ ≤ 125°C 0.06% Output voltage load regulation(3) 10 mA ≤ IL ≤ 0.8 A 0.04% ΔVO/ ΔIOUT 10 mA ≤ IL ≤ 0.8 A, –40°C ≤ TJ ≤ 125°C 0.1% IL = 80 mA 24 35 IL = 80 mA, –40°C ≤ TJ ≤ 125°C 40 VIN – Dropout voltage(4) mV VOUT IL = 0.8 A 240 300 IL = 0.8 A, –40°C ≤ TJ ≤ 125°C 350 IL = 150 mA 5 9 IL = 150 mA, –40°C ≤ TJ ≤ 125°C 10 Ground pin current in normal IGND mA operation mode IL = 0.8 A 6 14 IL = 0.8 A, –40°C ≤ TJ ≤ 125°C 15 Ground pin current in shutdown VSD ≤ 0.3 V 0.01 10 µA IGND mode –40°C ≤ TJ ≤ 85°C 50 IO(PK) Peak output current VOUT ≥ VO(NOM) – 4% 1 A SHORT CIRCUIT PROTECTION ISC Short-circuit current 2.3 A SHUTDOWN INPUT Output = High VIN Output = High, –40°C ≤ TJ ≤ 125°C 2 VSDT Shutdown threshold V Output = Low 0 Output = Low, –40°C ≤ TJ ≤ 125°C 0.3 TdOFF Turnoff delay IL = 0.8 A 20 µs TdON Turnon delay IL = 0.8 A 25 µs ISD SD input current VSD = VIN 1 nA ERROR FLAG Threshold See(5) 10% VT See(5), –40°C ≤ TJ ≤ 125°C 5% 16% Threshold hysteresis See(5) 5% VTH See(5), –40°C ≤ TJ ≤ 125°C 2% 8% Isink = 100 µA 0.02 VEF(Sat) ERROR flag saturation V Isink = 100 µA, –40°C ≤ TJ ≤ 125°C 0.1 Td Flag reset delay 1 µs Ilk ERROR flag pin leakage current 1 nA Imax ERROR flag pin sink current VError = 0.5 V 1 mA (1) Limits are specified by testing, design, or statistical correlation. (2) Typical numbers are at 25°C and represent the most likely parametric norm. (3) Output voltage line regulation is defined as the change in output voltage from the nominal value due to change in the input line voltage. Output voltage load regulation is defined as the change in output voltage from the nominal value due to change in load current. The line and load regulation specification contains only the typical number. However, the limits for line and load regulation are included in the output voltage tolerance specification. (4) Dropout voltage is defined as the minimum input to output differential voltage at which the output drops 2% below the nominal value. Dropout voltage specification applies only to output voltages of 2.5 V and above. For output voltages below 2.5 V, the dropout voltage is nothing but the input to output differential, because the minimum input voltage is 2.5 V. (5) ERROR Flag threshold and hysteresis are specified as percentage of regulated output voltage. See ERROR Flag Operation. Copyright © 2003–2015, Texas Instruments Incorporated Submit Documentation Feedback 5 Product Folder Links: LP3871 LP3874 |
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