Datasheet MAX1797 (Maxim) - 2

ПроизводительMaxim
ОписаниеLow-Supply Current, Step-Up DC-DC Converters with True Shutdown
Страниц / Страница13 / 2 — Absolute Maximum Ratings. Electrical Characteristics. TA = 0°C to +85°C. …
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Absolute Maximum Ratings. Electrical Characteristics. TA = 0°C to +85°C. PARAMETER. SYMBOL. CONDITIONS. MIN. TYP. MAX. UNITS

Absolute Maximum Ratings Electrical Characteristics 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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MAX1795EUA+T
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MAX1795EUA+
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MAX1795/MAX1796/ Low-Supply Current, Step-Up DC-DC Converters MAX1797 with True Shutdown
Absolute Maximum Ratings
OUT, LX, SHDN, LBI, LBO, BATT to GND ..-0.3V to +6V Operating Temperature Range ... -40°C to +85°C FB ...-0.3V to (VOUT + 0.3V) Junction Temperature ..+150°C ILX, IOUT ...±1.5A Storage Temperature Range .. -65°C to +150°C Output Short-Circuit Duration .. 5s Lead Temperature (soldering, 10s) ...+300°C Continuous Power Dissipation 8-Pin μMAX (derate 4.1mW/°C above +70°C) ..330mW Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
Electrical Characteristics
(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
Minimum Input Voltage After startup 0.7 V Operating Voltage VBATT (Note 1) 1.0 5.5 V Startup Voltage TA = +25°C, RL = 3kΩ 0.85 1.0 V Startup Voltage Tempco -2.2 mV/°C FB = OUT 3.17 3.3 3.43 Output Voltage VOUT V FB = GND 4.80 5.0 5.20 Adjustable Output Voltage Range 2.0 5.5 V BATT = +2V, MAX1795 100 180 FB = OUT MAX1796 200 300 (VOUT = +3.3V) MAX1797 400 550 Steady-State Output Current IOUT mA BATT = +2V, MAX1795 50 120 FB = GND MAX1796 100 200 (VOUT = +5.0V) MAX1797 250 370 Feedback Set-Point Voltage (Adjustable Mode) VFB VOUT = +2V to +5.5V 1.20 1.24 1.28 V Feedback Input Current IFB VFB = +1.24V 4 100 nA Internal NFET, PFET VOUT = +3.3V, NFET 0.17 0.3 On-Resistance RDS(ON) I Ω LX = 100mA PFET 0.27 0.45 MAX1795 0.2 0.25 0.35 LX Switch Current Limit (NFET only) ILIM MAX1796 0.4 0.5 0.625 A MAX1797 0.8 1.0 1.25 LX Leakage Current ILEAK VLX = 0 and +5.5V, VOUT = +5.5V 0.2 µA Synchronous Rectifier Turn-Off Current Limit 25 mA Damping Switch On-Resistance RDAMP 100 200 400 Ω Operating Current into OUT (Note 2) VFB = +1.4V 25 45 µA www.maximintegrated.com Maxim Integrated │

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