Datasheet LTM4646 (Analog Devices) - 3

link to page 28 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 l 2.375 20 V Min without Bias VCPWR(DC) Input Control Power Voltage Input Range of Bias 4.5 20 V Normally Connected to VIN VOUT1, 2 (Range) Output Voltage Range (Note 8) l 0.6 5.5 V VOUT1(DC), Output Voltage, Total Variation CIN = 10µF ×4, COUT = 100µF ×4, Ceramic VOUT l 1.4775 1.5 1.5225 V VOUT2(DC) with Line and Load = 1.5V
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, 1 A COUT = 100µF ×4, VOUT1 = 1.5V, VOUT2 = 1.5V, VIN = 12V IQ(VIN) Input Supply Bias Current IOUT = 0.1A, fSW = 1MHz, Pulse-Skipping Mode 17 mA IOUT = 0.1A, fSW = 1MHz, Switching Continuous 35 mA Shutdown, RUN = 0, VIN = 12V 40 µA IS(VIN) Input Supply Current VIN = 4.5V, VOUT = 1.5V, IOUT = 10A, fSW = 1MHz 3.9 A VIN = 12V, VOUT = 1.5V, IOUT = 10A, fSW = 1MHz 1.45 A
Output Specifications
IOUT1(DC), IOUT2(DC) Output Continuous Current Range VIN = 12V, VOUT = 1.5V (Notes 7, 8) 0 10 A ΔVOUT1(LINE)/VOUT1 Line Regulation Accuracy VOUT = 1.5V, VIN from 4.5V to 20V l 0.01 0.025 %/V ΔVOUT2(LINE)/VOUT2 IOUT = 0A for Each Output ΔVOUT1(LOAD)/VOUT1 Load Regulation Accuracy For Each Output, VOUT = 1.5V, 0A to 10A l 0.15 0.3 % ΔVOUT2(LOAD)/VOUT2 VIN = 12V (Note 7) VOUT1(AC), VOUT2(AC) Output Ripple Voltage For Each Output, IOUT = 0A, COUT = 100µF ×4, 15 mVP-P VOUT = 1.5V, Frequency = 350kHz fS (Each Channel) Output Ripple Voltage Frequency VIN = 12V, VOUT = 1.5V, RFREQ = 115kΩ (Note 4) 350 kHz ΔVOUTSTART Turn-On Overshoot COUT = 100µF ×4, VOUT = 1.5V, IOUT = 0A VIN = 10 mV (Each Channel) 12V, CSS = 0.01µF tSTART Turn-On Time COUT = 100µF ×4, No Load, TRACK/SS with 5 ms (Each Channel) 0.01µF to GND, VIN = 12V ΔVOUT(LS) Peak Deviation for Dynamic Load Load: 0A to 6A to 0A 50 mV (Each Channel) COUT = 100µF ×4 VIN = 12V, VOUT = 1.5V tSETTLE Settling Time for Dynamic Load Step Load: 0A to 6A to 0A 20 µs (Each Channel) COUT = 100µF ×4 VIN = 12V, VOUT = 1.5V IOUT(PK) Output Current Limit VIN = 12V, VOUT = 1.5V 20 A (Each Channel) Rev. A For more information www.analog.com 3 Document Outline Operation Applications Information Package Description Package Photo Related Parts Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Decoupling Requirements Operation Applications Information Package Description Revision History Package Photo Design Resources Related Parts