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MAX15026 Datasheet(PDF) 3 Page - Maxim Integrated Products |
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MAX15026 Datasheet(HTML) 3 Page - Maxim Integrated Products |
3 / 23 page Low-Cost, Small, 4.5V to 28V Wide Operating Range, DC-DC Synchronous Buck Controller _______________________________________________________________________________________ 3 PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS ENABLE (EN) EN Input High VEN_H VEN rising 1.14 1.20 1.26 V EN Input Low VEN_L VEN falling 0.997 1.05 1.103 V EN Input Leakage Current ILEAK_EN VEN = 5.5V -1 +1 µA OSCILLATOR Switching Frequency fSW RRT = 27k Ω 540 600 660 kHz 1MHz Switching Frequency RRT = 15.7k Ω 0.9 1 1.1 MHz 2MHz Switching Frequency RRT = 7.2k Ω 1.8 2.0 2.4 MHz Switching Frequency Adjustment Range (Note 3) 200 2000 kHz RT Voltage VRT 1.19 1.205 1.22 V PWM Ramp Peak-to-Peak Amplitude VRAMP 1.8 V PWM Ramp Valley VVALLEY 0.8 V Minimum Controllable On-Time 65 100 ns Maximum Duty Cycle fSW = 600kHz 85 88 % Minimum Low-Side On-Time RRT = 15.7k Ω 75 110 150 ns OUTPUT DRIVERS/DRIVER SUPPLY (DRV) DRV Undervoltage Lockout VDRV_UVLO VDRV rising 4.0 4.2 4.4 V DRV Undervoltage Lockout Hysteresis 400 mV Low, sinking 100mA, VBST = 5V 1 3 DH On-Resistance High, sourcing 100mA, VBST = 5V 1.5 4.5 Ω Low, sinking 100mA, VBST = 5.2V 1 3 DL On-Resistance High, sourcing 100mA, VBST = 5.2V 1.5 4.5 Ω Sinking 4 DH Peak Current CLOAD = 10nF Sourcing 3 A Sinking 4 DL Peak Current CLOAD = 10nF Sourcing 3 A DH/DL Break-Before-Make Time DH at 1V (falling) to DL at 1V (rising) 10 (18, Note 5) ns DL/DH Break-Before-Make Time DL at 1V (falling) to DH at 1V (rising) 10 (20, Note 6) ns SOFT-START Soft-Start Duration 2048 Switching Cycles Reference Voltage Steps 64 Steps CURRENT LIMIT/HICCUP Current-Limit Threshold Adjustment Range Cycle-by-cycle valley current-limit threshold adjustment range valley limit = VLIM/10 30 300 mV ELECTRICAL CHARACTERISTICS (continued) (VIN = 12V, RRT = 27kΩ, RLIM = 30kΩ, CVCC = 4.7µF, CIN = 1µF, TA = -40°C to +85°C (MAX15026B/CETD+, MAX15026BETD/V+), TA = TJ = -40°C to +125°C (MAX15026B/C/DATD+), unless otherwise noted. Typical values are at TA = +25°C.) (Note 2) |
Similar Part No. - MAX15026 |
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Similar Description - MAX15026 |
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