LT3028 ELECTRICAL CHARACTERISTICSThe ● denotes specifications which apply over the full operating temperature range, otherwise specifications are TA = 25 ° C. (Note 2)PARAMETERCONDITIONSMINTYPMAXUNITS Dropout Voltage ILOAD = 1mA 0.10 0.15 V (Output 2) ILOAD = 1mA ● 0.19 V VIN2 = VOUT2(NOMINAL) ILOAD = 10mA 0.17 0.22 V (Notes 5, 6, 10) ILOAD = 10mA ● 0.29 V ILOAD = 50mA 0.24 0.31 V ILOAD = 50mA ● 0.40 V ILOAD = 100mA 0.30 0.35 V ILOAD = 100mA ● 0.45 V Dropout Voltage ILOAD = 10mA 0.12 0.19 V (Output 1) ILOAD = 10mA ● 0.25 V VIN1 = VOUT1(NOMINAL) ILOAD = 50mA 0.17 0.22 V (Notes 5, 6, 10) ILOAD = 50mA ● 0.32 V ILOAD = 100mA 0.21 0.28 V ILOAD = 100mA ● 0.34 V ILOAD = 500mA 0.32 0.37 V ILOAD = 500mA ● 0.47 V GND Pin Current ILOAD = 0mA ● 25 50 µA (Output 2) ILOAD = 1mA ● 60 95 µA VIN2 = VOUT2(NOMINAL) ILOAD = 10mA ● 230 400 µA (Notes 5, 7) ILOAD = 50mA ● 1 2 mA ILOAD = 100mA ● 2.2 4 mA GND Pin Current ILOAD = 0mA ● 30 75 µA (Output 1) ILOAD = 1mA ● 65 120 µA VIN1 = VOUT1(NOMINAL) ILOAD = 50mA ● 1 1.6 mA (Notes 5, 7) ILOAD = 100mA ● 2 3 mA ILOAD = 250mA ● 5 8 mA ILOAD = 500mA ● 10 16 mA Output Voltage Noise COUT = 10µF, CBYP = 0.01µF, ILOAD = Full Current, 20 µVRMS BW = 10Hz to 100kHz ADJ1/ADJ2 Pin Bias Current ADJ1, ADJ2 (Notes 3, 8) 30 100 nA Shutdown Threshold VOUT = Off to On ● 0.80 1.4 V VOUT = On to Off ● 0.25 0.65 V SHDN1/SHDN2 Pin Current VSHDN1, VSHDN2 = 0V ● 0 0.5 µA (Note 9) VSHDN1, VSHDN2 = 20V ● 1 3.0 µA Quiescent Current in Shutdown VIN = 6V, VSHDN1 = 0V, VSHDN2 = 0V 0.01 0.1 µA Ripple Rejection VIN = 2.72V (Avg), VRIPPLE = 0.5VP-P, fRIPPLE = 120Hz, 55 65 dB ILOAD = Full Current Current Limit Output 2, VIN2 = 7V, VOUT2 = 0V 500 mA VIN2 = 2.3V, ∆VOUT2 = – 0.1V ● 110 mA Output 1, VIN1 = 7V, VOUT1 = 0V 1.3 A VIN1 = 2.3V, ∆VOUT1 = – 0.1V ● 520 mA Input Reverse Leakage Current VIN = – 20V, VOUT = 0V ● 1 mA Note 1: Absolute Maximum Ratings are those values beyond which the life range are assured by design, characterization and correlation with of a device may be impaired. statistical process controls. The LT3028I is guaranteed and tested over the Note 2: The LT3028 regulator is tested and specified under pulse load full – 40°C to 125°C operating junction temperature range. conditions such that TJ ≈ TA. The LT3028E is guaranteed to meet Note 3: The LT3028 is tested and specified for these conditions with the performance specifications from 0°C to 125°C junction temperature. ADJ1/ADJ2 pin connected to the corresponding OUT1/OUT2 pin. Specifications over the – 40°C to 125°C operating junction temperature 3028f 3
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