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LM2990S-5.0 데이터시트(PDF) 3 Page - Texas Instruments |
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LM2990S-5.0 데이터시트(HTML) 3 Page - Texas Instruments |
3 / 20 page LM2990 www.ti.com SNVS093D – JUNE 1999 – REVISED APRIL 2013 Operating Ratings (1) Junction Temperature Range (TJ) −40°C to +125°C Maximum Input Voltage (Operational) −26V (1) Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is intended to be functional, but do not ensure specific performance limits. For ensured specifications and test conditions, see the Electrical Characteristics. 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. LM2990-5.0 LM2990-5.2 Units Parameter Conditions (Limit) Typ(2) Limit(3) Typ(2) Limit(3) Output Voltage (VO) −4.90 −5.10 V (max) 5 mA ≤ IO ≤ 1A −5.10 −5.30 mV (min) −5 −5.2 V 5 mA ≤ IO ≤ 1A −4.75 −4.94 V (max) −5.25 −5.46 V (min) Line Regulation IO = 5 mA, 4 40 4 40 mV (max) VO(NOM) −1V > VIN > −26V Load Regulation 50 mA ≤ IO ≤ 1A 1 40 1 40 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) 1.8 1.5 1.8 1.5 A (min) Maximum Output Current See(4) 1.8 1.5 1.8 1.5 A (min) Ripple Rejection Vripple = 1 Vrms, 58 50 58 50 dB (min) ƒripple = 1 kHz, IO = 5 mA Output Noise Voltage 10 Hz–100 kHz, IO = 5 mA 250 750 250 750 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. Copyright © 1999–2013, Texas Instruments Incorporated Submit Documentation Feedback 3 Product Folder Links: LM2990 |
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