Datasheet LT1762 (Analog Devices) - 9

LT1762 Series
TYPICAL PERFORMANCE CHARACTERISTICS LT1762 Ripple Rejection Minimum Input Voltage Load Regulation
68 2.50 5 VOUT = 1.22V 66 2.25 0 LT1762 2.00 64 IL = 150mA LT1762-3 1.75 –5 62 1.50 LT1762-2.5 60 1.25 IL = 1mA –10 LT1762-3.3 58 1.00 LT1762-5 –15 RIPPLE REJECTION (dB) 0.75 56 VIN = VOUT (NOMINAL) + LOAD REGULATION (mV) 1V + 0.5VP-P RIPPLE MINIMUM INPUT VOLTAGE (V) 0.50 –20 54 AT f = 120Hz VIN = VOUT(NOMINAL) + 1V I 0.25 ∆I L = 150mA L = 1mA TO 150mA 52 0 –25 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 1762 G37 1762 G38 1762 G39
Output Noise Spectral Density CBYP = 0 Output Noise Spectral Density
) 10 ) 10 √Hz COUT = 10μF √Hz COUT = 10μF I μV/ IL = 150mA μV/ L = 150mA LT1762-3.3 LT1762-5 LT1762-5 CBYP = 1000pF 1 1 CBYP = 100pF LT1762-2.5 LT1762 LT1762 LT1762-3 0.1 0.1 CBYP = 0.01μF OUTPUT NOISE SPECTRAL DENSITY ( OUTPUT NOISE SPECTRAL DENSITY ( 0.01 0.01 10 100 1k 10k 100k 10 100 1k 10k 100k FREQUENCY (Hz) FREQUENCY (Hz) 1762 G40 1762 G41
RMS Output Noise vs Bypass RMS Output Noise vs Load Capacitor Current (10Hz to 100kHz)
160 160 COUT = 10μF COUT = 10μF 140 IL = 150mA 140 CBYP = 0 f = 10Hz TO 100kHz C LT1762-5 LT1762-5 BYP = 0.01μF ) 120 ) 120 LT1762-3.3 μV RMS 100 μV RMS 100 LT1762-3 80 80 LT1762 60 LT1762 60 OUTPUT NOISE ( 40 OUTPUT NOISE ( 40 LT1762-2.5 20 20 LT1762-5 LT1762 0 0 10 100 1000 10000 0.01 0.1 1 10 100 1000 CBYP (pF) LOAD CURRENT (mA) 1762 G42 1762 G43 Rev B For more information www.analog.com 9 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Applications Information Package Description Revision History Typical Application Related Parts