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MAX8529 数据表(PDF) 2 Page - Maxim Integrated Products |
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MAX8529 数据表(HTML) 2 Page - Maxim Integrated Products |
2 / 20 page 1.5MHz Dual 180° Out-of-Phase PWM Step-Down Controller with POR 2 _______________________________________________________________________________________ ABSOLUTE MAXIMUM RATINGS 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. V+ to GND ..............................................................-0.3V to +25V PGND to GND .......................................................-0.3V to +0.3V VL to GND ..................-0.3V to the lower of +6V and (V+ + 0.3V) BST1, BST2 to GND ...............................................-0.3V to +30V LX1 to BST1..............................................................-6V to +0.3V LX2 to BST2..............................................................-6V to +0.3V DH1 to LX1 ..............................................-0.3V to (VBST1 + 0.3V) DH2 to LX2 ..............................................-0.3V to (VBST2 + 0.3V) DL1, DL2 to PGND ........................................-0.3V to (VL + 0.3V) CKO, REF, OSC, ILIM1, ILIM2, COMP1, COMP2 to GND ..........................-0.3V to (VL + 0.3V) FB1, FB2, RST, SYNC, EN to GND...........................-0.3V to +6V VL to GND Short Circuit..............................................Continuous REF to GND Short Circuit ...........................................Continuous Continuous Power Dissipation (TA = +70°C) 24-Pin QSOP (derate 9.4mW/°C above +70°C)...........762mW Operating Temperature Range ...........................-40°C to +85°C Junction Temperature ......................................................+150°C Storage Temperature Range .............................-65°C to +150°C Lead Temperature (soldering, 10s) .................................+300°C ELECTRICAL CHARACTERISTICS (V+ = 12V, EN = ILIM_ = VL, SYNC = GND, IVL = 0mA, PGND = GND, CREF = 0.22µF, CVL = 4.7µF (ceramic), ROSC = 10k Ω, compensation components for COMP_ are from Figure 1, TA = -40°C to +85°C (Note 1), unless otherwise noted.) PARAMETER CONDITIONS MIN TYP MAX UNITS GENERAL (Note 2) 4.75 23.00 V+ Operating Range VL = V+ (Note 2) 4.75 5.50 V V+ Operating Supply Current VL unloaded, no MOSFETs connected 4.0 4.8 7.0 mA V+ Standby Supply Current EN = LX_ = FB_ = 0V ROSC = 10k Ω 0.50 0.65 1.00 mA Thermal Shutdown Rising temperature, typical hysteresis = 10 °C 160 °C ILIM_ = VL 75 100 125 RILIM_ = 100k Ω 32 50 62 Current-Limit Threshold PGND - LX_ RILIM_ = 600k Ω 225 300 375 mV VL REGULATOR Output Voltage 5.5V < V+ < 23V, 1mA < ILOAD < 50mA 4.75 5 5.25 V VL Undervoltage Lockout Trip Level 4.4 4.55 4.7 V REFERENCE Output Voltage IREF = 0µA 1.98 2.00 2.02 V Reference Load Regulation 0µA < IREF < 50µA 0 4 10 mV SOFT-START Digital Ramp Period Internal 6-bit DAC for one converter to ramp from 0V to full scale (Note 3) 1024 DC-to- DC Clocks Soft-Start Steps 64 Steps FREQUENCY Low End of Range ROSC = 10k Ω 540 600 600 kHz High End of Range ROSC = 5k Ω 1020 1200 1380 kHz DH_ Minimum Off-Time ROSC = 5k Ω 110 160 ns |
类似零件编号 - MAX8529_07 |
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类似说明 - MAX8529_07 |
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