Datasheet LT3667 (Analog Devices) - 9
| Hersteller | Analog Devices |
| Beschreibung | 40V 400mA Step-Down Switching Regulator with Dual Fault Protected LDOs |
| Seiten / Seite | 34 / 9 — TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. … |
| Dateiformat / Größe | PDF / 446 Kb |
| Dokumentensprache | Englisch |
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. LDOs:. FB2, FB3 Pin Bias Current
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LT3667
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. LDOs: LDOs: FB2, FB3 Pin Bias Current Internal Current Limit Internal Current Limit
5 350 325 VIN2/3-VOUT2/3(NOMINAL) = 1V 300 4 300 250 3 275 FB3 200 FB2 2 150 250 CURRENT LIMIT (mA) 100 T CURRENT LIMIT (mA) FB2/3 PIN BIAS CURRENT (nA) 1 A = 140°C TA = 140°C T 225 50 A = 125°C TA = 125°C TA = 25°C TA = 25°C TA = –50°C T 0 A = –50°C 0 –50 200 –25 0 25 50 75 100 125 150 0 5 10 15 20 25 30 35 40 45 0 5 10 15 20 25 30 35 40 45 TEMPERATURE (°C) INPUT/OUTPUT DIFFERENTIAL (V) OUTPUT VOLTAGE (V) 3667 G28 3667 G29 3667 G30
LDOs: LDOs: LDOs: Reverse Output Current Reverse Output Current Input Ripple Rejection
1.0 50 90 ALL PINS GROUNDED V 0.9 OUT2/3 = VFB2/3 = 2V EXCEPT FOR OUT2/3 45 VIN2/3 = 0V 80 OUT3 (V 0.8 40 IN1 = 12V) 70 0.7 35 60 0.6 30 OUT2 (nA) 50 (V 0.5 25 IN1 = 12V) 40 I OUT2/3 0.4 20 CURRENT (µA) IFB2/3 0.3 30 15 0.2 10 20 I INPUT RIPPLE REJECTION (dB) I OUT2/3 OUT2/3 = 200mA 0.1 5 10 VOUT2/3 = 5V VIN2/3 = 5.8V + 50mVRMS RIPPLE 0 0 0 0 5 10 15 20 25 30 35 40 45 –50 –25 0 25 50 75 100 125 150 10 100 1k 10k 100k 1M 10M VOUT2/3 (V) TEMPERATURE (°C) FREQUENCY (Hz) 3667 G31 3667 G32 3667 G33
LDOs: LDOs: LDOs: Minimum Input Voltage Load Regulation Output Noise Spectral Density
2.2 1 10 I ) 2.0 L = 200mA Hz VOUT2/3 = 0.8V 1.8 VIN1 = 5V 0 1.6 1.4 –1 1 1.2 –2 1.0 VOUT2/3 = 5V 0.8 –3 V 0.1 OUT2/3 = 3.3V 0.6 VOUT2/3 = 2.5V LOAD REGULATION (mV) ∆IOUT2/3 = 1mA TO 200mA VOUT2/3 = 1.8V MINIMUM INPUT VOLTAGE (V) 0.4 –4 VOUT2/3 = 0.8V VOUT2/3 = 1.5V V 0.2 IN2/3 = 2.2V VOUT2/3 = 1.2V COUT = 10µF VIN1 = 5V VOUT2/3 = 0.8V IL = 200mA 0 –5 OUTPUT NOISE SPECTRAL DENSITY (µV/√ 0.01 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 10 100 1k 10k 100k TEMPERATURE (°C) TEMPERATURE (°C) FREQUENCY (Hz) 3667 G34 3667 G35 3667 G36 3667fb For more information www.linear.com/LT3667 9 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Order Information Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Revision History Typical Application Related Parts
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. LDOs: LDOs: FB2, FB3 Pin Bias Current Internal Current Limit Internal Current Limit
5 350 325 VIN2/3-VOUT2/3(NOMINAL) = 1V 300 4 300 250 3 275 FB3 200 FB2 2 150 250 CURRENT LIMIT (mA) 100 T CURRENT LIMIT (mA) FB2/3 PIN BIAS CURRENT (nA) 1 A = 140°C TA = 140°C T 225 50 A = 125°C TA = 125°C TA = 25°C TA = 25°C TA = –50°C T 0 A = –50°C 0 –50 200 –25 0 25 50 75 100 125 150 0 5 10 15 20 25 30 35 40 45 0 5 10 15 20 25 30 35 40 45 TEMPERATURE (°C) INPUT/OUTPUT DIFFERENTIAL (V) OUTPUT VOLTAGE (V) 3667 G28 3667 G29 3667 G30
LDOs: LDOs: LDOs: Reverse Output Current Reverse Output Current Input Ripple Rejection
1.0 50 90 ALL PINS GROUNDED V 0.9 OUT2/3 = VFB2/3 = 2V EXCEPT FOR OUT2/3 45 VIN2/3 = 0V 80 OUT3 (V 0.8 40 IN1 = 12V) 70 0.7 35 60 0.6 30 OUT2 (nA) 50 (V 0.5 25 IN1 = 12V) 40 I OUT2/3 0.4 20 CURRENT (µA) IFB2/3 0.3 30 15 0.2 10 20 I INPUT RIPPLE REJECTION (dB) I OUT2/3 OUT2/3 = 200mA 0.1 5 10 VOUT2/3 = 5V VIN2/3 = 5.8V + 50mVRMS RIPPLE 0 0 0 0 5 10 15 20 25 30 35 40 45 –50 –25 0 25 50 75 100 125 150 10 100 1k 10k 100k 1M 10M VOUT2/3 (V) TEMPERATURE (°C) FREQUENCY (Hz) 3667 G31 3667 G32 3667 G33
LDOs: LDOs: LDOs: Minimum Input Voltage Load Regulation Output Noise Spectral Density
2.2 1 10 I ) 2.0 L = 200mA Hz VOUT2/3 = 0.8V 1.8 VIN1 = 5V 0 1.6 1.4 –1 1 1.2 –2 1.0 VOUT2/3 = 5V 0.8 –3 V 0.1 OUT2/3 = 3.3V 0.6 VOUT2/3 = 2.5V LOAD REGULATION (mV) ∆IOUT2/3 = 1mA TO 200mA VOUT2/3 = 1.8V MINIMUM INPUT VOLTAGE (V) 0.4 –4 VOUT2/3 = 0.8V VOUT2/3 = 1.5V V 0.2 IN2/3 = 2.2V VOUT2/3 = 1.2V COUT = 10µF VIN1 = 5V VOUT2/3 = 0.8V IL = 200mA 0 –5 OUTPUT NOISE SPECTRAL DENSITY (µV/√ 0.01 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 10 100 1k 10k 100k TEMPERATURE (°C) TEMPERATURE (°C) FREQUENCY (Hz) 3667 G34 3667 G35 3667 G36 3667fb For more information www.linear.com/LT3667 9 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Order Information Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Revision History Typical Application Related Parts