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LTM4644 数据表(PDF) 3 Page - Linear Technology |
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LTM4644 数据表(HTML) 3 Page - Linear Technology |
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3 / 34 page  LTM4646 3 4646f For more information www.linear.com/LTM4646 ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the specified 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 18. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS VIN(DC) Input DC Voltage 2.375V with 5V External Bias on CPWR, 4.5V Min without Bias l 2.375 20 V VCPWR(DC) Input Control Power Voltage Input Range of Bias Normally Connected to VIN 4.5 20 V VOUT1, 2 (Range) Output Voltage Range (Note 8) l 0.6 5.5 V VOUT1(DC), VOUT2(DC) Output Voltage, Total Variation with Line and Load CIN = 10µF 4, COUT = 100µF 4, Ceramic VOUT = 1.5V l 1.4775 1.5 1.5225 V Input Specifications VRUN1, VRUN2 RUN Pin On/Off Threshold RUN Rising 1.1 1.2 1.3 V VRUN1HYS, VRUN2HYS RUN Pin On Hysteresis 160 mV RRUN1, RRUN2 RUN1, RUN2 Resistance Pull-Down Resistance 100 kΩ IINRUSH(VIN) Input Inrush Current at Start-Up IOUT = 0A, CIN = 10µF ×4, CSS = 0.01µF, COUT = 100µF ×4, VOUT1 = 1.5V, VOUT2 = 1.5V, VIN = 12V 1 A IQ(VIN) Input Supply Bias Current IOUT = 0.1A, fSW = 1MHz, Pulse-Skipping Mode IOUT = 0.1A, fSW = 1MHz, Switching Continuous Shutdown, RUN = 0, VIN = 12V 17 35 40 mA mA µA IS(VIN) Input Supply Current VIN = 4.5V, VOUT = 1.5V, IOUT = 10A, fSW = 1MHz VIN = 12V, VOUT = 1.5V, IOUT = 10A, fSW = 1MHz 3.9 1.45 A A Output Specifications IOUT1(DC), IOUT2(DC) Output Continuous Current Range VIN = 12V, VOUT = 1.5V (Notes 7, 8) 0 10 A ∆VOUT1(LINE)/VOUT1 ∆VOUT2(LINE)/VOUT2 Line Regulation Accuracy VOUT = 1.5V, VIN from 4.5V to 20V IOUT = 0A for Each Output l 0.01 0.025 %/V ∆VOUT1(LOAD)/VOUT1 ∆VOUT2(LOAD)/VOUT2 Load Regulation Accuracy For Each Output, VOUT = 1.5V, 0A to 10A VIN = 12V (Note 7) l 0.15 0.3 % VOUT1(AC), VOUT2(AC) Output Ripple Voltage For Each Output, IOUT = 0A, COUT = 100µF ×4, VOUT = 1.5V, Frequency = 350kHz 15 mVP-P fS (Each Channel) Output Ripple Voltage Frequency VIN = 12V, VOUT = 1.5V, RFREQ = 115kΩ (Note 4) 350 kHz ∆VOUTSTART (Each Channel) Turn-On Overshoot COUT = 100µF ×4, VOUT = 1.5V, IOUT = 0A VIN = 12V, CSS = 0.01µF 10 mV tSTART (Each Channel) Turn-On Time COUT = 100µF ×4, No Load, TRACK/SS with 0.01µF to GND, VIN = 12V 5 ms ∆VOUT(LS) (Each Channel) Peak Deviation for Dynamic Load Load: 0A to 6A to 0A COUT = 100µF ×4 VIN = 12V, VOUT = 1.5V 50 mV tSETTLE (Each Channel) Settling Time for Dynamic Load Step Load: 0A to 6A to 0A COUT = 100µF ×4 VIN = 12V, VOUT = 1.5V 20 µs IOUT(PK) (Each Channel) Output Current Limit VIN = 12V, VOUT = 1.5V 20 A |
类似零件编号 - LTM4644 |
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类似说明 - LTM4644 |
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