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LT1764AET-1.8 Datasheet(PDF) 8 Page - Linear Technology |
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LT1764AET-1.8 Datasheet(HTML) 8 Page - Linear Technology |
8 / 20 page 8 LT1764A Series 1764afb TYPICAL PERFOR A CE CHARACTERISTICS Ripple Rejection Ripple Rejection LT1764A Minimum Input Voltage Load Regulation Output Noise Spectral Density FREQUENCY (Hz) 20 30 50 70 80 10 1k 10k 1M 1764 G31 10 100 100k 60 40 0 COUT = 100µF TANTALUM + 10 × 1µF CERAMIC COUT = 10µF TANTALUM IL = 1.5A VIN = VOUT(NOM) + 1V + 50mVRMS RIPPLE TEMPERATURE ( °C) –50 –25 50 60 75 0 50 75 1764 G32 55 70 65 25 100 125 IL = 1.5A VIN = VOUT(NOM) + 1V + 0.5VP-P RIPPLE AT f = 120Hz TEMPERATURE ( °C) –50 2.0 2.5 3.0 25 75 1764 G33 1.5 1.0 –25 0 50 100 125 0.5 0 IL = 3A IL = 1.5A IL = 100mA IL = 500mA TEMPERATURE ( °C) –50 25 1764 G34 –25 0 50 10 5 0 –5 –10 –15 –20 –25 –30 75 100 125 LT1764A LT1764A-3.3 LT1764A-2.5 LT1764A-1.8 ∆IL = 1mA TO 3A VIN = 2.7V (LT1764A/LT1764A-1.5) VIN = VOUT(NOM) + 1V (LT1764A-1.8/-2.5/-3.3) LT1764A-1.5 FREQUENCY (Hz) 10 0.01 0.1 1 100 1k 10k 100k 1764 G35 LT1764A-3.3 LT1764A-2.5 LT1764A-1.8 LT1764A-1.5 LT1764A COUT = 10µF ILOAD = 3A Current Limit Current Limit Reverse Output Current Reverse Output Current INPUT/OUTPUT DIFFERENTIAL (V) 0 2 4 6 1 3 5 4 8 12 16 1764 G27 20 2 0 6 10 14 18 TJ = –50°C TJ = 125°C TJ = 25°C TEMPERATURE ( °C) –50 4 5 6 25 75 1764 G28 3 2 –25 0 50 100 125 1 0 VIN = 7V VOUT = 0V OUTPUT VOLTAGE (V) 0 3.0 4.0 5.0 8 1764 G29 2.0 1.0 2.5 3.5 4.5 1.5 0.5 0 2 4 6 19 3 5 7 10 TJ = 25°C VIN = 0V CURRENT FLOWS INTO OUTPUT PIN VOUT = VADJ (LT1764A) VOUT = VFB (LT1764A-1.5/1.8/-2.5/-3.3) LT1764A LT1764A-1.8 LT1764A-2.5 LT1764A-3.3 LT1764A-1.5 TEMPERATURE ( °C) –50 0 0.1 0.3 0.4 0.5 1.0 0.7 0 50 75 1764 G30 0.2 0.8 0.9 0.6 –25 25 100 125 VOUT = 1.21V (LT1764A) VOUT = 1.5V (LT1764A-1.5) VOUT = 1.8V (LT1764A-1.8) VOUT = 2.5V (LT1764A-2.5) VOUT = 3.3V (LT1764A-3.3) VIN = 0V LT1764A-1.5/1.8/-2.5/-3.3 LT1764A |
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