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LTM4628 Datasheet(PDF) 3 Page - Linear Technology |
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LTM4628 Datasheet(HTML) 3 Page - Linear Technology |
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3 / 36 page  LTM4628 3 4628fe For more information www.linear.com/LTM4628 ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full internal operating temperature range (Note 2). Specified as each individual output channel. TA = 25°C, VIN = 12V and VRUN1, VRUN2 at 5V unless otherwise noted, per the typical application in Figure 28. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS VIN Input DC Voltage l 4.5 26.5 V VOUT Output Voltage l 0.6 5.5 V VOUT1(DC), VOUT2(DC) Output Voltage, Total Variation with Line and Load CIN = 22µF × 3, COUT = 100µF × 1 Ceramic, 470µF POSCAP, MODE_PLLIN = GND, RFB1, RFB2 = 40.2k, VIN = 4.5V to 26.5V, IOUT = 0A to 8A l 1.477 1.5 1.523 V Input Specifications VRUN1, VRUN2 RUN Pin On/Off Threshold RUN Rising 1.1 1.25 1.40 V VRUN1HYS, VRUN2HYS RUN Pin On Hysteresis 150 mV IINRUSH(VIN) Input Inrush Current at Start-Up IOUT = 0A, CIN = 22µF × 3, COUT = 100µF , 470µF POSCAP VOUT1 = 1.5V, VOUT2 = 1.5V, VIN = 12V, TRACK = 0.01µF 1 A IQ(VIN) Input Supply Bias Current VIN = 12V, VOUT = 1.5V, Burst Mode Operation VIN = 12V, VOUT = 1.5V, Pulse-Skipping Mode VIN = 12V, VOUT= 1.5V, Switching Continuous Shutdown, RUN = 0, VIN = 12V 5 15 65 60 mA mA mA µA IS(VIN) Input Supply Current VIN = 4.75V, VOUT = 1.5V, IOUT = 8A VIN = 12V, VOUT = 1.5V, IOUT = 8A VIN = 26.5V, VOUT = 1.5V, IOUT = 8A 2.9 1.18 0.575 A A A Output Specifications IOUT1(DC), IOUT2(DC) Output Continuous Current Range VIN = 12V, VOUT = 1.5V (Note 7) 0 8 A ΔVOUT1(LINE)/VOUT1 ΔVOUT2(LINE)/VOUT2 Line Regulation Accuracy VOUT = 1.5V, VIN from 4.5V to 26.5V IOUT = 0A for Each Output, l 0.010 0.04 %/V ΔVOUT1(LOAD)/VOUT1 ΔVOUT2(LOAD)/VOUT2 Load Regulation Accuracy For Each Output, VOUT = 1.5V, 0A to 8A VIN = 12V (Note 7) l 0.15 0.3 % VOUT1(AC), VOUT2(AC) Output Ripple Voltage IOUT = 0A, COUT = 100µF X5R Ceramic, 470µF POSCAP VIN = 12V, VOUT = 1.5V 15 mVP-P fS (Each Channel) Output Ripple Voltage Frequency VIN = 12V, VOUT = 1.5V, fSET = 2.5V (Note 4) 780 kHz fSYNC (Each Channel) SYNC Capture Range 400 780 kHz ΔVOUTSTART (Each Channel) Turn-On Overshoot COUT = 100µF X5R Ceramic, 470µF POSCAP, VOUT = 1.5V, IOUT = 0A VIN = 12V 10 mV tSTART (Each Channel) Turn-On Time COUT = 100µF X5R Ceramic, 470µF POSCAP, No Load, TRACK/SS with 0.01µF to GND, VIN = 12V 5 ms ΔVOUT(LS) (Each Channel) Peak Deviation for Dynamic Load Load: 0% to 50% to 0% of Full Load COUT = 22µF × 3 X5R Ceramic, 470µF POSCAP VIN = 12V, VOUT = 1.5V 30 mV tSETTLE (Each Channel) Settling Time for Dynamic Load Step Load: 0% to 50% to 0% of Full Load, VIN = 12V, COUT = 100µF, COUT = 470µF 20 µs IOUT(PK) (Each Channel) Output Current Limit VIN = 12V, VOUT = 1.5V 15 A Control Section VFB1, VFB2 Voltage at VFB Pins IOUT = 0A, VOUT = 1.5V l 0.592 0.600 0.606 V IFB1, IFB2 Leakage Current of VFB1, VFB2 (Note 6) –5 –20 nA VOVL Feedback Overvoltage Lockout l 0.64 0.66 0.68 V |
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Similar Description - LTM4628_15 |
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