(China (Mainland))
Product Summary
The LDS3985M33R is an ultra low drop-low noise BiCMOS 300 mA voltage regulator for use with very low ESR output capacitor. It provides up to 300 mA, from 2.5 V to 6 V input voltage. It is stable with ceramic and high quality tantalum capacitor. The ultra low drop voltage, low quiescent current and low noise makes the LDS3985M33R suitable for low power applications and in battery powered systems. Regulator ground current increases only slightly in dropout, further prolonging the battery life. Typical applications of the LDS3985M33R are in mobile phone and similar battery powered wireless systems, portable information appliances.
Parametrics
LDS3985M33R absolute maximum ratings: (1)VI DC input voltage: -0.3 to 6 V; (2)VO DC output voltage: -0.3 to VI+0.3 V; (3)VINH INHIBIT input voltage: -0.3 to VI+0.3 V; (4)IO Output current: Internally limited; (5)PD Power dissipation: Internally limited; (6)TSTG Storage temperature range: -65 to 150 ℃; (7)TOP Operating junction temperature range: -40 to 125 ℃.
Features
LDS3985M33R features: (1)Input voltage from 2.5 V to 6 V; (2)Stable with low ESR ceramic capacitors; (3)Ultra low dropout voltage (150 mV typ. at 300 mA load, 0.4 mV typ. at 1 mA load); (4)Very low quiescent current (85 μA typ. at no load, 200 μA typ. at 300 mA load; max 1.5 μA in off mode); (5)Guaranteed output current up to 300 mA; (6)Wide range of output voltage: – from 1.25 V to 5.0 V; (7)Fast turn-on time: typ. 240 μs – [CO = 2.2 μF, CBYP = 33 nF and IO = 1 mA]; (8)Logic-controlled electronic shutdown; (9)Internal current and thermal limit; (10)Output low noise voltage 30 μVRMS over 10 Hz to 100 kHz; (11)SVR of 55 dB at 1 kHz, 50 dB at 10 kHz; (12)Temperature range: - 40 ℃ to 125 ℃.
Diagrams
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 LDS3985M33R |
STMicroelectronics |
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Data Sheet |
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