Datasheet LT3012 (Analog Devices) - 7
| Hersteller | Analog Devices |
| Beschreibung | 250mA, 4V to 80V Low Dropout Micropower Linear Regulator |
| Seiten / Seite | 16 / 7 — TYPICAL PERFORMANCE CHARACTERISTICS. Input Ripple Rejection. Minimum … |
| Dateiformat / Größe | PDF / 188 Kb |
| Dokumentensprache | Englisch |
TYPICAL PERFORMANCE CHARACTERISTICS. Input Ripple Rejection. Minimum Input Voltage. Load Regulation
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LT3012
TYPICAL PERFORMANCE CHARACTERISTICS Input Ripple Rejection Input Ripple Rejection Minimum Input Voltage
92 100 5.0 VIN = 4.75V + 50mVRMS RIPPLE ILOAD = 250mA 90 88 I 4.5 LOAD = 250mA 80 4.0 84 70 3.5 80 60 3.0 76 50 2.5 COUT = 10μF 40 2.0 72 30 1.5 RIPPLE REJECTION (dB) 68 RIPPLE REJECTION (dB) V 20 1.0 IN = 4.75V + 0.5VP-P RIPPLE AT f = 120Hz MINIMUM INPUT VOLTAGE (V) 64 IL = 250mA 10 COUT = 3.3μF 0.5 VOUT = 1.24V 60 0 0 –50 –25 0 25 50 75 100 125 150 10 100 1k 10k 100k 1M –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) FREQUENCY (Hz) TEMPERATURE (°C) 3012 G19 3012 G20 3012 G21
Load Regulation Output Noise Spectral Density
0 ) 10 ΔI C L = 1mA TO 250mA Hz OUT = 3.3μF –2 ILOAD = 250mA –4 –6 1 –8 –10 –12 0.1 –14 LOAD REGULATION (mV) –16 –18 –20 OUTPUT NOISE SPECTRAL DENSITY (μV/√ 0.01 –50 –25 0 25 50 75 100 125 150 10 100 1k 10k 100k TEMPERATURE (°C) FREQUENCY (Hz) 3012 G22 3012 G23
10Hz to 100kHz Output Noise Transient Response
0.15 0.10 0.05 0 VOUT 100μV/DIV –0.05 DEVIATION (V) V OUTPUT VOLTAGE IN = 6V –0.10 VOUT = 5V –0.15 CIN = 3.3μF CERAMIC COUT = 3.3μF CERAMIC 300 ΔILOAD = 100mA TO 200mA 200 COUT = 10μF 1ms/DIV 3012 G24 IL = 250mA 100 VOUT = 1.24V LOAD CURRENT (mA) 0 0 100 200 300 400 500 TIME (μs) 3012 G25 3012fd 7
TYPICAL PERFORMANCE CHARACTERISTICS Input Ripple Rejection Input Ripple Rejection Minimum Input Voltage
92 100 5.0 VIN = 4.75V + 50mVRMS RIPPLE ILOAD = 250mA 90 88 I 4.5 LOAD = 250mA 80 4.0 84 70 3.5 80 60 3.0 76 50 2.5 COUT = 10μF 40 2.0 72 30 1.5 RIPPLE REJECTION (dB) 68 RIPPLE REJECTION (dB) V 20 1.0 IN = 4.75V + 0.5VP-P RIPPLE AT f = 120Hz MINIMUM INPUT VOLTAGE (V) 64 IL = 250mA 10 COUT = 3.3μF 0.5 VOUT = 1.24V 60 0 0 –50 –25 0 25 50 75 100 125 150 10 100 1k 10k 100k 1M –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) FREQUENCY (Hz) TEMPERATURE (°C) 3012 G19 3012 G20 3012 G21
Load Regulation Output Noise Spectral Density
0 ) 10 ΔI C L = 1mA TO 250mA Hz OUT = 3.3μF –2 ILOAD = 250mA –4 –6 1 –8 –10 –12 0.1 –14 LOAD REGULATION (mV) –16 –18 –20 OUTPUT NOISE SPECTRAL DENSITY (μV/√ 0.01 –50 –25 0 25 50 75 100 125 150 10 100 1k 10k 100k TEMPERATURE (°C) FREQUENCY (Hz) 3012 G22 3012 G23
10Hz to 100kHz Output Noise Transient Response
0.15 0.10 0.05 0 VOUT 100μV/DIV –0.05 DEVIATION (V) V OUTPUT VOLTAGE IN = 6V –0.10 VOUT = 5V –0.15 CIN = 3.3μF CERAMIC COUT = 3.3μF CERAMIC 300 ΔILOAD = 100mA TO 200mA 200 COUT = 10μF 1ms/DIV 3012 G24 IL = 250mA 100 VOUT = 1.24V LOAD CURRENT (mA) 0 0 100 200 300 400 500 TIME (μs) 3012 G25 3012fd 7