Datasheet LT3045 (Analog Devices) - 10
| 制造商 | Analog Devices |
| 描述 | 20V, 500mA, Ultralow Noise, Ultrahigh PSRR Linear Regulator |
| 页数 / 页 | 32 / 10 — TYPICAL PERFORMANCE CHARACTERISTICS TJ = 25°C, unless otherwise noted. … |
| 修订版 | B |
| 文件格式/大小 | PDF / 2.9 Mb |
| 文件语言 | 英语 |
TYPICAL PERFORMANCE CHARACTERISTICS TJ = 25°C, unless otherwise noted. Power Supply Ripple Rejection
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LT3045
TYPICAL PERFORMANCE CHARACTERISTICS TJ = 25°C, unless otherwise noted. Power Supply Ripple Rejection as a Function of Error Amplifier Power Supply Ripple Rejection Input Pair Power Supply Ripple Rejection
140 120 100 VIN = VOUT + 2V 110 I 90 L = 500mA 120 C 100 OUT = 10µF 80 CSET = 0.47µF 90 70 100 80 60 80 70 50 PSRR (dB) PSRR (dB) 60 PSRR (dB) 40 60 IL = 500mA 50 30 I V I L = 300mA IN = 5V 40 100kHz L = 500mA 20 40 I R V R L = 100mA SET = 30.1k OUT ≥ 1.3V 500kHz SET = 30.1k I C 0.6V < V C L = 50mA OUT = 10µF OUT < 1.3V 30 10 1MHz OUT = 10µF I C V C L = 1mA SET = 0.47µF OUT ≤ 0.6V 2MHz SET = 0.47µF 20 20 0 10 100 1k 10k 100k 1M 10M 10 100 1k 10k 100k 1M 10M 0 1 2 3 4 5 FREQUENCY (Hz) FREQUENCY (Hz) INPUT–TO–OUTPUT DIFFERENTIAL (V) 3045 G43 3045 G44 3045 G45
Integrated RMS Output Noise Integrated RMS Output Noise Integrated RMS Output Noise (10Hz to 100kHz) (10Hz to 100kHz) (10Hz to 100kHz)
2.0 9 2.0 VIN = 5V 1.8 VIN = 5V VIN = VOUT + 2V R 8 1.8 SET = 33.2k COUT = 10µF COUT = 10µF ) 1.6 COUT = 10µF ) RSET = 33.2k ) 1.6 CSET = 4.7µF C 7 SET = 4.7µF I ILOAD = 500mA V RMS LOAD = 500mA 1.4 V RMS V RMS 1.4 6 1.2 1.2 5 1.0 1.0 4 0.8 0.8 3 0.6 0.6 RMS OUTPUT NOISE (µ 0.4 2 RMS OUTPUT NOISE (µ RMS OUTPUT NOISE (µ 0.4 0.2 1 0.2 0 0 0 0 50 100 150 200 250 300 350 400 450 500 0.01 0.1 1 10 100 0 1.5 3 4.5 6 7.5 9 10.5 12 13.5 15 LOAD CURRENT (mA) SET PIN CAPACITANCE (µF) OUTPUT VOLTAGE (V) 3045 G46 3045 G47 3045 G48
Noise Spectral Density Noise Spectral Density Noise Spectral Density
1000 1000 1000 CSET = 0.047µF IL = 500mA CSET = 0.47µF IL = 300mA CSET = 1µF IL = 100mA 100 CSET = 4.7µF 100 100 IL = 10mA C /√Hz) SET = 22µF I /√Hz) L = 1mA /√Hz) 10 10 C 10 OUT = 10µF OUTPUT NOISE (nV 1 V OUTPUT NOISE (nV 1 OUTPUT NOISE (nV 1 IN = 5V VIN = 5V VIN = 5V RSET = 33.2k RSET = 33.2k COUT = 22µF RSET = 33.2k COUT = 10µF CSET = 4.7µF CSET = 4.7µF ILOAD = 500mA I C 0.1 LOAD = 500mA OUT = 10µF 0.1 0.1 10 100 1k 10k 100k 1M 10M 10 100 1k 10k 100k 1M 10M 10 100 1k 10k 100k 1M 10M FREQUENCY (Hz) FREQUENCY (Hz) FREQUENCY (Hz) 3045 G49 3045 G50 3045 G51 Rev. B 10 For more information www.analog.com Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Applications Information Typical Applications Package Description Revision History Typical Application Related Parts
TYPICAL PERFORMANCE CHARACTERISTICS TJ = 25°C, unless otherwise noted. Power Supply Ripple Rejection as a Function of Error Amplifier Power Supply Ripple Rejection Input Pair Power Supply Ripple Rejection
140 120 100 VIN = VOUT + 2V 110 I 90 L = 500mA 120 C 100 OUT = 10µF 80 CSET = 0.47µF 90 70 100 80 60 80 70 50 PSRR (dB) PSRR (dB) 60 PSRR (dB) 40 60 IL = 500mA 50 30 I V I L = 300mA IN = 5V 40 100kHz L = 500mA 20 40 I R V R L = 100mA SET = 30.1k OUT ≥ 1.3V 500kHz SET = 30.1k I C 0.6V < V C L = 50mA OUT = 10µF OUT < 1.3V 30 10 1MHz OUT = 10µF I C V C L = 1mA SET = 0.47µF OUT ≤ 0.6V 2MHz SET = 0.47µF 20 20 0 10 100 1k 10k 100k 1M 10M 10 100 1k 10k 100k 1M 10M 0 1 2 3 4 5 FREQUENCY (Hz) FREQUENCY (Hz) INPUT–TO–OUTPUT DIFFERENTIAL (V) 3045 G43 3045 G44 3045 G45
Integrated RMS Output Noise Integrated RMS Output Noise Integrated RMS Output Noise (10Hz to 100kHz) (10Hz to 100kHz) (10Hz to 100kHz)
2.0 9 2.0 VIN = 5V 1.8 VIN = 5V VIN = VOUT + 2V R 8 1.8 SET = 33.2k COUT = 10µF COUT = 10µF ) 1.6 COUT = 10µF ) RSET = 33.2k ) 1.6 CSET = 4.7µF C 7 SET = 4.7µF I ILOAD = 500mA V RMS LOAD = 500mA 1.4 V RMS V RMS 1.4 6 1.2 1.2 5 1.0 1.0 4 0.8 0.8 3 0.6 0.6 RMS OUTPUT NOISE (µ 0.4 2 RMS OUTPUT NOISE (µ RMS OUTPUT NOISE (µ 0.4 0.2 1 0.2 0 0 0 0 50 100 150 200 250 300 350 400 450 500 0.01 0.1 1 10 100 0 1.5 3 4.5 6 7.5 9 10.5 12 13.5 15 LOAD CURRENT (mA) SET PIN CAPACITANCE (µF) OUTPUT VOLTAGE (V) 3045 G46 3045 G47 3045 G48
Noise Spectral Density Noise Spectral Density Noise Spectral Density
1000 1000 1000 CSET = 0.047µF IL = 500mA CSET = 0.47µF IL = 300mA CSET = 1µF IL = 100mA 100 CSET = 4.7µF 100 100 IL = 10mA C /√Hz) SET = 22µF I /√Hz) L = 1mA /√Hz) 10 10 C 10 OUT = 10µF OUTPUT NOISE (nV 1 V OUTPUT NOISE (nV 1 OUTPUT NOISE (nV 1 IN = 5V VIN = 5V VIN = 5V RSET = 33.2k RSET = 33.2k COUT = 22µF RSET = 33.2k COUT = 10µF CSET = 4.7µF CSET = 4.7µF ILOAD = 500mA I C 0.1 LOAD = 500mA OUT = 10µF 0.1 0.1 10 100 1k 10k 100k 1M 10M 10 100 1k 10k 100k 1M 10M 10 100 1k 10k 100k 1M 10M FREQUENCY (Hz) FREQUENCY (Hz) FREQUENCY (Hz) 3045 G49 3045 G50 3045 G51 Rev. B 10 For more information www.analog.com Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Applications Information Typical Applications Package Description Revision History Typical Application Related Parts