Datasheet LT3028 (Analog Devices) - 8
| Manufacturer | Analog Devices |
| Description | Dual 100mA/500mA Low Dropout, Low Noise, Micropower Regulators with Independent Inputs |
| Pages / Page | 16 / 8 — TYPICAL PERFOR A CE CHARACTERISTICS. Channel-to-Channel Isolation. Output … |
| File Format / Size | PDF / 348 Kb |
| Document Language | English |
TYPICAL PERFOR A CE CHARACTERISTICS. Channel-to-Channel Isolation. Output 2 Load Regulation. Output 1 Load Regulation
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LT3028
W U TYPICAL PERFOR A CE CHARACTERISTICS Channel-to-Channel Isolation Channel-to-Channel Isolation Output 2 Load Regulation
0 100 –1 90 CHANNEL 2 –2 80 VOUT1 20mV/DIV –3 70 CHANNEL 1 –4 60 50 –5 VOUT2 40 20mV/DIV –6 GIVEN CHANNEL IS TESTED –7 30 WITH 50mVRMS SIGNAL ON LOAD REGULATION (mV) OPPOSING CHANNEL, BOTH 20 –8 CHANNELS DELIVERING FULL COUT1 = 22µF 50µs/DIV 3028 G50 10 CURRENT –9 CHANNEL-TO-CHANNEL ISOLATION (dB) COUT2 = 10µF T ∆IL = 1mA TO 100mA J = 25°C C 0 BYP1 = CBYP2 = 0.01µF –10 10 100 1k 10k 100k 1M ∆IL1 = 50mA TO 500mA –50 –25 0 25 50 75 100 125 ∆IL2 = 10mA TO 100mA TEMPERATURE ( FREQUENCY (Hz) °C) VIN = 6V, VOUT1 = VOUT2 = 5V 3028 G34 3028 G35
Output 1 Load Regulation Output Noise Spectral Density Output Noise Spectral Density
5 10 10 ∆I C L = 1mA TO 500mA Hz) COUT = 10µF Hz) OUT = 10µF √ C √ IL = FULL LOAD V/ BYP = 0 V/ µ I T L = FULL LOAD µ J = 25°C TJ = 25°C VOUT SET FOR 5V CBYP = 1000pF 0 1 VOUT SET FOR 5V 1 CBYP = 100pF VOUT =VADJ VOUT =VADJ –5 0.1 0.1 C LOAD REGULATION (mV) BYP = 0.01µF OUTPUT NOISE SPECTRAL DENSITY ( –10 OUTPUT NOISE SPECTRAL DENSITY ( 0.01 0.01 –50 –25 0 25 50 75 100 125 0.01 0.1 1 10 100 0.01 0.1 1 10 100 TEMPERATURE (°C) FREQUENCY (kHz) FREQUENCY (kHz) 3028 G38 3028 G36 3028 G37
Output 2 Output 1 RMS Output Noise RMS Output Noise vs Load RMS Output Noise vs Load vs Bypass Capacitor Current (10Hz to 100kHz) Current (10Hz to 100kHz)
140 160 160 C C V OUT = 10µF OUT2 = 10µF OUT = 5V COUT1 = 10µF I T L = FULL LOAD 140 J = 25°C 140 TJ = 25°C 120 f C BW = 10Hz TO 100kHz BYP = 0 CBYP = 0 ) TJ = 25°C ) C 120 BYP = 0.01µF ) 120 CBYP = 0.01µF 100 RMS RMS V OUTPUT 2 V RMSV µ µ 100 µ 100 80 OUTPUT 1 VOUT2 SET FOR 5V VOUT1 SET FOR 5V 80 80 60 VOUT = 1.22V VOUT2 =VADJ2 60 60 OUTPUT 2 VOUT1 = VADJ1 40 OUTPUT NOISE ( OUTPUT NOISE ( 40 OUTPUT NOISE ( 40 OUTPUT 1 VOUT2 SET FOR 5V VOUT1 SET FOR 5V 20 20 20 VOUT2 =VADJ2 VOUT1 = VADJ1 0 0 0 10 100 1000 10000 0.01 0.1 1 10 100 0.01 0.1 1 10 100 1000 LOAD CURRENT (mA) C LOAD CURRENT (mA) BYP (pF) 3028 G40 3028 G39 3028 G41 3028f 8
W U TYPICAL PERFOR A CE CHARACTERISTICS Channel-to-Channel Isolation Channel-to-Channel Isolation Output 2 Load Regulation
0 100 –1 90 CHANNEL 2 –2 80 VOUT1 20mV/DIV –3 70 CHANNEL 1 –4 60 50 –5 VOUT2 40 20mV/DIV –6 GIVEN CHANNEL IS TESTED –7 30 WITH 50mVRMS SIGNAL ON LOAD REGULATION (mV) OPPOSING CHANNEL, BOTH 20 –8 CHANNELS DELIVERING FULL COUT1 = 22µF 50µs/DIV 3028 G50 10 CURRENT –9 CHANNEL-TO-CHANNEL ISOLATION (dB) COUT2 = 10µF T ∆IL = 1mA TO 100mA J = 25°C C 0 BYP1 = CBYP2 = 0.01µF –10 10 100 1k 10k 100k 1M ∆IL1 = 50mA TO 500mA –50 –25 0 25 50 75 100 125 ∆IL2 = 10mA TO 100mA TEMPERATURE ( FREQUENCY (Hz) °C) VIN = 6V, VOUT1 = VOUT2 = 5V 3028 G34 3028 G35
Output 1 Load Regulation Output Noise Spectral Density Output Noise Spectral Density
5 10 10 ∆I C L = 1mA TO 500mA Hz) COUT = 10µF Hz) OUT = 10µF √ C √ IL = FULL LOAD V/ BYP = 0 V/ µ I T L = FULL LOAD µ J = 25°C TJ = 25°C VOUT SET FOR 5V CBYP = 1000pF 0 1 VOUT SET FOR 5V 1 CBYP = 100pF VOUT =VADJ VOUT =VADJ –5 0.1 0.1 C LOAD REGULATION (mV) BYP = 0.01µF OUTPUT NOISE SPECTRAL DENSITY ( –10 OUTPUT NOISE SPECTRAL DENSITY ( 0.01 0.01 –50 –25 0 25 50 75 100 125 0.01 0.1 1 10 100 0.01 0.1 1 10 100 TEMPERATURE (°C) FREQUENCY (kHz) FREQUENCY (kHz) 3028 G38 3028 G36 3028 G37
Output 2 Output 1 RMS Output Noise RMS Output Noise vs Load RMS Output Noise vs Load vs Bypass Capacitor Current (10Hz to 100kHz) Current (10Hz to 100kHz)
140 160 160 C C V OUT = 10µF OUT2 = 10µF OUT = 5V COUT1 = 10µF I T L = FULL LOAD 140 J = 25°C 140 TJ = 25°C 120 f C BW = 10Hz TO 100kHz BYP = 0 CBYP = 0 ) TJ = 25°C ) C 120 BYP = 0.01µF ) 120 CBYP = 0.01µF 100 RMS RMS V OUTPUT 2 V RMSV µ µ 100 µ 100 80 OUTPUT 1 VOUT2 SET FOR 5V VOUT1 SET FOR 5V 80 80 60 VOUT = 1.22V VOUT2 =VADJ2 60 60 OUTPUT 2 VOUT1 = VADJ1 40 OUTPUT NOISE ( OUTPUT NOISE ( 40 OUTPUT NOISE ( 40 OUTPUT 1 VOUT2 SET FOR 5V VOUT1 SET FOR 5V 20 20 20 VOUT2 =VADJ2 VOUT1 = VADJ1 0 0 0 10 100 1000 10000 0.01 0.1 1 10 100 0.01 0.1 1 10 100 1000 LOAD CURRENT (mA) C LOAD CURRENT (mA) BYP (pF) 3028 G40 3028 G39 3028 G41 3028f 8
