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LTC3577-4 Datasheet(PDF) 8 Page - Linear Technology |
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LTC3577-4 Datasheet(HTML) 8 Page - Linear Technology |
8 / 52 page LTC3577-3/LTC3577-4 8 357734fa ELECTRICAL CHARACTERISTICS LDO Regulators. The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VINLDO1 = VINLDO2 = VOUT = 3.8V, LDO1 and LDO2 enabled unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS LDO Regulator 1 (LDO1-Always On) VINLDO1 Input Voltage Range VINLDO1 ≤ VOUT + 0.3V l 1.65 5.5 V VOUT_UVLO VOUT Falling VOUT Rising LDO1 is Disabled Below VOUT UVLO 2.5 2.7 2.8 2.9 V V VLDO1_FB LDO1_FB Regulated Feedback Voltage ILDO1 = 1mA l 0.78 0.8 0.82 V LDO1_FB Line Regulation (Note 11) ILDO1 = 1mA, VIN = 1.65V to 5.5V 0.4 mV/V LDO1_FB Load Regulation (Note 11) ILDO1 = 1mA to 150mA 5 μV/mA ILDO1_OC Available Output Current l 150 mA ILDO1_SC Short-Circuit Output Current 270 mA VDROP1 Dropout Voltage (Note 12) ILDO1 = 150mA, VINLDO1 = 3.6V ILDO1 = 150mA, VINLDO1 = 2.5V ILDO1 = 75mA, VINLDO1 = 1.8V 160 200 170 260 320 280 mV mV mV RLDO1_PD Output Pull-Down Resistance in Shutdown LDO1 Disabled 10 kΩ ILDO_FB1 LDO_FB1 Input Current –50 50 nA LDO Regulator 2 (LDO2-Pushbutton Enabled, First in Sequence) VINLDO2 Input Voltage Range VINLDO2 ≤ VOUT + 0.3V l 1.65 5.5 V VOUT_UVLO VOUT Falling VOUT Rising LDO2 is Disabled Below VOUT UVLO 2.5 2.7 2.8 2.9 V V VLDO2_FB LDO2_FB Regulated Output Voltage ILDO2 = 1mA l 0.78 0.8 0.82 V LDO2_FB Line Regulation (Note 11) ILDO2 = 1mA, VIN = 1.65V to 5.5V 0.4 mV/V LDO2_FB Load Regulation (Note 11) ILDO2 = 1mA to 150mA 5 μV/mA ILDO2_OC Available Output Current l 150 mA ILDO2_SC Short-Circuit Output Current 270 mA VDROP2 Dropout Voltage (Note 12) ILDO2 = 150mA, VINLDO2 = 3.6V ILDO2 = 150mA, VINLDO2 = 2.5V ILDO1 = 75mA, VINLDO1 = 1.8V 160 200 170 260 320 280 mV mV mV RLDO2_PD Output Pull-Down Resistance in Shutdown LDO2 Disabled 14 kΩ ILDO_FB2 LDO_FB2 Input Current –50 50 nA |
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