Datasheet LTC3026 (Analog Devices) - 3

LTC3026
elecTrical characTerisTics (BOOST ENABLED, LSW = 10µH) The
l
denotes the specifications which apply over the full operating junction temperature range, otherwise specifications are at TJ = 25°C. VIN = 1.5V, VOUT = 1.2V, CIN = CBST = 4.7µF, COUT = 10µF (all capacitors ceramic) unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VIN Operating Voltage (Note 2) l 1.14 3.5 V IIN Operating Current IOUT = 0mA, VOUT = 0.8V, VSHDN = VIN, VIN = 1.2V 1160 µA IOUT = 0mA, VOUT = 1.2V, VSHDN = VIN, VIN = 1.5V 950 µA IOUT = 0mA, VOUT = 1.2V, VSHDN = VIN, VIN = 2.5V 640 µA IOUT = 0mA, VOUT = 1.2V, VSHDN = VIN, VIN = 3.5V 400 µA IINSHDN Shutdown Current VSHDN = 0V, VIN = 3.5V l 0.6 20 µA Inductor Size Requirement 4.7 10 40 µH Inductor Peak Current Requirement 150 mA VBST Boost Output Voltage Range VSHDN = VIN 4.8 5 5.2 V VBSTUVLO Boost Undervoltage Lockout l 4.0 4.2 4.4 V Boost Output Drive (Note 3) VIN < 1.4V 7 mA VIN ≥ 1.4V 10 mA
(BOOST DISABLED, VSW = 0V or Floating) The
l
denotes the specifications which apply over the full operating junction temperature range, otherwise specifications are at TJ = 25°C. VIN = 1.5V, VOUT = 1.2V, VBST = 5V, CIN = CBST = 1µF, COUT = 10µF (all capacitors ceramic) unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VIN Operating Voltage (Note 2) l 1.14 5.5 V IIN Operating Current IOUT = 100µA, VSHDN = VIN, 1.2V ≤ VIN ≤ 5V l 95 200 µA IINSHDN Shutdown Current VSHDN = 0V, VIN = 3.5V l 0.6 20 µA VBST Boost Operating Voltage (Note 7) VSHDN = VIN l 4.5 5 5.5 V VBSTUVLO Undervoltage Lockout l 4.0 4.25 4.4 V IBST Boost Operating Current IOUT = 100µA, VSHDN = VIN l 175 275 µA IBSTSHDN Boost Shutdown Current VSHDN = 0V 1 5 µA
(BOOST ENABLED or DISABLED) The
l
denotes the specifications which apply over the full operating junction temperature range, otherwise specifications are at TJ = 25°C. VIN = 1.5V, VOUT = 1.2V, CIN = CBST = 1µF, COUT = 10µF (all capacitors ceramic) unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VADJ Regulation Voltage (Note 5) 1mA ≤ IOUT ≤ 1.5A, 1.14V ≤ VIN ≤ 3.5V, VBST = 5V, VOUT = 0.8V 0.397 0.4 0.403 V 1mA ≤ IOUT ≤ 1.5A, 1.14V ≤ VIN ≤ 3.5V, VBST = 5V, VOUT = 0.8V l 0.395 0.4 0.405 V OUT Programming Range l 0.4 2.6 V Dropout Voltage (Note 6) VIN = 1.5V, VADJ = 0.38, IOUT = 1.5A l 100 250 mV IADJ ADJ Input Current VADJ = 0.4V l –100 100 nA IOUT Continuous Output Current VSHDN = VIN l 1.5 A ILIM Output Current Current Limit 3 A en Output Voltage Noise f = 10Hz to 100kHz, IL = 800mA Boost Disabled 110 µVRMS Boost Enabled 210 µVRMS 3026ff 3 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Typical Applications Package Description Revision History Typical Application Related Parts