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SP7650 Datasheet(PDF) 3 Page - Sipex Corporation |
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SP7650 Datasheet(HTML) 3 Page - Sipex Corporation |
3 / 16 page 3 Date: /5/06 SP7650 Wide Input Voltage Range 3A, 300kHz, Buck Regulator © Copyright 2006 Sipex Corporation 3 Date: 2/16/06 SP7650 Wide Input Voltage Range 3A, 300kHz, Buck Regulator © Copyright 2006 Sipex Corporation ELECTRICAL SPECIFICATIONS Unless otherwise specified: -40°C < TAMB < 85°C, -40°C< Tj< 125°C, 4.5V < VCC < 5.5V, 3V< Vin< 28V, BST=LX + 5V, LX = GND = 0.0V, UVIN = 3.0V, CVCC = 1µF, CCOMP = 0.1µF, CSS = 50nF, Typical measured at VCC = 5V. The denotes the specifications which apply over the full temperature range, unless otherwise specified. PARAMETER MIN. TYP. MAX. UNITS CONDITIONS CONTROL LOOP: PWM COMPARATOR, RAMP & LOOP DELAY PATH Ramp Amplitude 0.92 1.1 1.28 V RAMP Offset 1.1 V T A = 25˚C, RAMP COMP until GH starts Switching RAMP offset Temp. Coefficient -2 mV/˚C GH Minimum Pulse Width 90 180 ns Maximum Controllable Duty Ratio 92 97 % Maximum Duty Ratio Measured just before pulsing begins Maximum Duty Ratio 100 % Valid for 20 cycles Internal Oscillator Ratio 240 300 360 kHz TIMERS: SOFTSTART SS Charge Current: 10 µA SS Discharge Current: 1 mA Fault Present, SS = 0.2V PROTECTION: SHORT CIRCUIT & THERMAL Short Circuit Threshold Voltage 0.2 0.25 0.3 V Measured VREF (0.8V) - VFB Hiccup Timeout 200 ms VFB = 0.5V Number of Allowable Clock Cycles at 100% Duty Cycle 20 Cycles Minimum GL Pulse After 20 Cycles 0.5 Cycles VFB = 0.7V Thermal Shutdown Temperature 145 ˚C V FB = 0.7V Thermal Recovery Temperature 135 ˚C Thermal Hysteresis 10 ˚C OUTPUT: POWER STAGE High Side Switch R DSON 40 mΩ VCC = 5V ; I OUT = 3A; TAMB = 25˚C Synchrous Lowside Switch R DSON 40 mΩ VCC = 5V ; I OUT = 3A ; TAMB = 25˚C Maximum Output Current 3 A |
Similar Part No. - SP7650_06 |
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Similar Description - SP7650_06 |
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