Datasheet MAX1797 (Maxim) - 3

ПроизводительMaxim
ОписаниеLow-Supply Current, Step-Up DC-DC Converters with True Shutdown
Страниц / Страница13 / 3 — Electrical Characteristics (continued). TA = 0°C to +85°C. PARAMETER. …
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Язык документаанглийский

Electrical Characteristics (continued). TA = 0°C to +85°C. PARAMETER. SYMBOL. CONDITIONS. MIN. TYP. MAX. UNITS

Electrical Characteristics (continued) TA = 0°C to +85°C PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

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DC DC CONV, STEP UP, 8UMAX; Voltage Regulator Type:Step Up (Boost); Voltage, Input Max:5.5V; Voltage, Output Max:5V; Current, Output Max:180mA; Voltage,...
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MAX1795/MAX1796/ Low-Supply Current, Step-Up DC-DC Converters MAX1797 with True Shutdown
Electrical Characteristics (continued)
(VBATT = +2V, OUT = FB (VOUT = +3.3V), SHDN = LBI = GND,
TA = 0°C to +85°C
, unless otherwise noted. Typical values are at TA = +25°C.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Operating Current into BATT VFB = +1.4V, VLBI = +1V 2 4 µA Shutdown Current into BATT SHDN = BATT, VLBI = +1V 2 4 µA LX Switch MaxImum On-Time tON VFB = +1V, if current limit not reached 3 4 5 µs LX Switch Minimum Off-Time tOFF VFB = +1V 0.8 1 1.2 µs V LBI Threshold Voltage Falling V BATT = +2V 0.8 0.85 0.90 LBI V VBATT = LBI 0.875 0.925 0.975 LBI Hysteresis 25 mV LBI Input Current ILBI VLBI = +0.8V 9 100 nA VBATT = VLBI = +0.975V, sinking 20µA (50Ω typ) 0.1 LBO Low Output Voltage V VBATT = VLBI = +1.1V, sinking 100µA (25Ω typ) 0.1 LBO Off-Leakage Current VLBO = +5.5V 1 100 nA V 0.2 x IL VBATT SHDN Input Voltage V V 0.8 x IH VBATT Shutdown Input Current VSHDN = 0 and +5.5V 100 nA
Electrical Characteristics
(VBATT = +2V, OUT = FB (VOUT = +3.3V), SHDN = LBI = GND,
TA = -40°C to +85°C
, unless otherwise noted.) (Note 3)
PARAMETER SYMBOL CONDITIONS MIN MAX UNITS
Operating Voltage VBATT Note 1 1.0 5.5 V FB = OUT 3.13 3.47 Output Voltage VOUT V FB = GND 4.75 5.25 Adjustable Output Voltage Range 2.0 5.5 V MAX1795 100 FB = OUT (V MAX1796 200 OUT = +3.3V) Steady-State Output Current MAX1797 400 (Note 1) IOUT mA MAX1795 60 FB = GND (V MAX1796 125 OUT = +5.0V) MAX1797 250 Feedback Set-Point Voltage (Adjustable Mode) VFB VOUT = +2V to +5.5V 1.19 1.29 V Feedback Input Current IFB VFB = +1.25V 100 nA www.maximintegrated.com Maxim Integrated │

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