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LM2990S-5 데이터시트(PDF) 4 Page - Texas Instruments |
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LM2990S-5 데이터시트(HTML) 4 Page - Texas Instruments |
4 / 20 page LM2990 SNVS093D – JUNE 1999 – REVISED APRIL 2013 www.ti.com Electrical Characteristics VIN = −5V + VO(NOM) (1), I O = 1A, CO = 47 μF, unless otherwise specified. Boldface limits apply over the entire operating temperature range, −40°C ≤ TJ ≤ 125°C, all other limits apply for TJ = 25°C. LM2990-12 LM2990-15 Units Parameter Conditions (Limit) Typ(2) Limit(3) Typ(2) Limit(3) Output Voltage (VO) −11.76 −14.70 V (max) 5 mA ≤ IO ≤ 1A −12.24 −15.30 V (min) −12 −15 V 5 mA ≤ IO ≤ 1A −11.40 −14.25 V (max) −12.60 −15.75 V (min) Line Regulation IO = 5 mA, 6 60 6 60 mV (max) VO(NOM) −1V > VIN > −26V Load Regulation 50 mA ≤ IO ≤ 1A 3 50 3 50 mV (max) Dropout Voltage IO = 0.1A, ΔVO ≤ 100 mV 0.1 0.3 0.1 0.3 V (max) IO = 1A, ΔVO ≤ 100 mV 0.6 1 0.6 1 V (max) Quiescent Current (Iq) IO ≤ 1A 1 5 1 5 mA (max) IO = 1A, VIN = VO(NOM) 9 50 9 50 mA (max) Short Circuit Current RL = 1Ω (4) 1.2 0.9 1.0 0.75 A (min) Maximum Output Current See(4) 1.8 1.4 1.8 1.4 A (min) Ripple Rejection Vripple = 1 Vrms, 52 42 52 42 dB (min) ƒripple = 1 kHz, IO = 5 mA Output Noise Voltage 10 Hz–100 kHz, IO = 5 mA 500 1500 600 1800 μV (max) Long Term Stability 1000 Hours 2000 2000 ppm (1) VO(NOM) is the nominal (typical) regulator output voltage, −5V, −5.2V, −12V or −15V. (2) Typicals are at TJ = 25°C and represent the most likely parametric norm. (3) Limits are specified and 100% production tested. (4) The short circuit current is less than the maximum output current with the −12V and −15V versions due to internal foldback current limiting. The −5V and −5.2V versions, tested with a lower input voltage, does not reach the foldback current limit and therefore conducts a higher short circuit current level. If the LM2990 output is pulled above ground, the maximum allowed current sunk back into the LM2990 is 1.5A. 4 Submit Documentation Feedback Copyright © 1999–2013, Texas Instruments Incorporated Product Folder Links: LM2990 |
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