Datasheet LT3380 (Analog Devices) - 4
| Fabricante | Analog Devices |
| Descripción | Multioutput Power Management Solution with 4 Buck Switching and 3 LDO Linear Regulators with I2C |
| Páginas / Página | 28 / 4 — ELECTRICAL CHARACTERISTICS. The. denotes the specifications which apply … |
| Formato / tamaño de archivo | PDF / 1.6 Mb |
| Idioma del documento | Inglés |
ELECTRICAL CHARACTERISTICS. The. denotes the specifications which apply over the specified operating
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LT3380
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the specified operating junction temperature range, otherwise specifications are at TA = 25°C (Note 2). VIN = PVIN1 = PVIN2 = PVIN3 = PVIN4 = VIN_L1 = VIN_L2 = VIN_L3 = DVDD = 3.8V. All regulators disabled unless otherwise noted. PARAMETER CONDITIONS MIN TYP MAX UNITS
Available Output Current l 300 mA VIN_Lx Quiescent Current Regulator Enabled, ILDO = 0A l 12 25 µA VIN_Lx Shutdown Current Regulator Disabled l 0 1 µA VIN Quiescent Current Regulator Enabled l 50 85 µA Feedback Regulation Voltage l 0.707 0.725 0.743 V Line Regulation ILDO =1mA, VIN = 2.7V to 5.5V 0.01 %/V Load Regulation ILDO = 1mA to 300mA 0.01 % Short-Circuit Current Limit 770 mA Dropout Voltage (Note 4) ILDO = 300mA, VLDO = 2.5V 210 260 mV ILDO = 300mA, VLDO = 1.2V 450 615 mV Feedback Pin Input Current VFB_Lx = 725mV –0.05 0.05 µA
LDO Regulator 3
VIN_L3 Input Voltage l 2.35 VIN V Output Voltage ILDO = 1mA l 1.746 1.8 1.854 V Available Output Current l 300 mA VIN_L3 Quiescent Current Regulator Enabled, ILDO = 0A l 14 25 µA VIN_L3 Shutdown Current Regulator Disabled l 0 1 µA VIN Quiescent Current Regulator Enabled l 50 85 µA Line Regulation ILDO =1mA, VIN = 2.7V to 5.5V 0.01 %/V Load Regulation ILDO = 1mA to 300mA 0.05 % Short-Circuit Current Limit 770 mA Dropout Voltage (Note 4) ILDO = 300mA, VLDO = 1.8V 280 350 mV
Enable Inputs
Threshold Rising All Enables Low l 0.75 1.2 V Threshold Falling One Enable High l 0.4 0.7 V Precision Threshold One or More Regulators Previously l 0.370 0.400 0.430 V Enabled Input Pull-Down Resistance 4.5 MΩ
PWR_ON
Threshold l 0.370 0.400 0.430 V Pull-Down Resistance 4.5 MΩ PWR_ON High to Allow Enables Delay 3 ms PWR_ON High to Inhibit Enables Delay 3 ms Inhibit Enable Time from PWR_ON Low 1 s
Status Output Pins (PGOOD, IRQ)
IRQ Output Low Voltage IIRQ = 3mA 0.1 0.4 V IRQ Output High Leakage Current IIRQ = 3.8mA –0.1 0.1 µA PGOOD Output Low Voltage IPGOOD = 3mA 0.1 0.4 V PGOOD Output High Leakage Current VPGOOD = 3.8V –0.1 0.1 µA PGOOD Threshold Rising –6 % PGOOD Threshold Falling –8 % Rev. 0 4 For more information www.analog.com Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Introduction Step-Down Switching Regulators Slewing DAC Reference Operation Power On Sequencing Power Off Sequencing Fault Detectionand Reporting I2C Operation Applications Information Thermal Considerations and Board Layout Typical Applications Package Description Typical Application Related Parts
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the specified operating junction temperature range, otherwise specifications are at TA = 25°C (Note 2). VIN = PVIN1 = PVIN2 = PVIN3 = PVIN4 = VIN_L1 = VIN_L2 = VIN_L3 = DVDD = 3.8V. All regulators disabled unless otherwise noted. PARAMETER CONDITIONS MIN TYP MAX UNITS
Available Output Current l 300 mA VIN_Lx Quiescent Current Regulator Enabled, ILDO = 0A l 12 25 µA VIN_Lx Shutdown Current Regulator Disabled l 0 1 µA VIN Quiescent Current Regulator Enabled l 50 85 µA Feedback Regulation Voltage l 0.707 0.725 0.743 V Line Regulation ILDO =1mA, VIN = 2.7V to 5.5V 0.01 %/V Load Regulation ILDO = 1mA to 300mA 0.01 % Short-Circuit Current Limit 770 mA Dropout Voltage (Note 4) ILDO = 300mA, VLDO = 2.5V 210 260 mV ILDO = 300mA, VLDO = 1.2V 450 615 mV Feedback Pin Input Current VFB_Lx = 725mV –0.05 0.05 µA
LDO Regulator 3
VIN_L3 Input Voltage l 2.35 VIN V Output Voltage ILDO = 1mA l 1.746 1.8 1.854 V Available Output Current l 300 mA VIN_L3 Quiescent Current Regulator Enabled, ILDO = 0A l 14 25 µA VIN_L3 Shutdown Current Regulator Disabled l 0 1 µA VIN Quiescent Current Regulator Enabled l 50 85 µA Line Regulation ILDO =1mA, VIN = 2.7V to 5.5V 0.01 %/V Load Regulation ILDO = 1mA to 300mA 0.05 % Short-Circuit Current Limit 770 mA Dropout Voltage (Note 4) ILDO = 300mA, VLDO = 1.8V 280 350 mV
Enable Inputs
Threshold Rising All Enables Low l 0.75 1.2 V Threshold Falling One Enable High l 0.4 0.7 V Precision Threshold One or More Regulators Previously l 0.370 0.400 0.430 V Enabled Input Pull-Down Resistance 4.5 MΩ
PWR_ON
Threshold l 0.370 0.400 0.430 V Pull-Down Resistance 4.5 MΩ PWR_ON High to Allow Enables Delay 3 ms PWR_ON High to Inhibit Enables Delay 3 ms Inhibit Enable Time from PWR_ON Low 1 s
Status Output Pins (PGOOD, IRQ)
IRQ Output Low Voltage IIRQ = 3mA 0.1 0.4 V IRQ Output High Leakage Current IIRQ = 3.8mA –0.1 0.1 µA PGOOD Output Low Voltage IPGOOD = 3mA 0.1 0.4 V PGOOD Output High Leakage Current VPGOOD = 3.8V –0.1 0.1 µA PGOOD Threshold Rising –6 % PGOOD Threshold Falling –8 % Rev. 0 4 For more information www.analog.com Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Introduction Step-Down Switching Regulators Slewing DAC Reference Operation Power On Sequencing Power Off Sequencing Fault Detectionand Reporting I2C Operation Applications Information Thermal Considerations and Board Layout Typical Applications Package Description Typical Application Related Parts