Datasheet LTM4636 (Analog Devices) - 3

LTM4636
e lecTrical characTerisTics The
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denotes the specifications which apply over the specified internal operating temperature range (Note 2), otherwise specifications are at TA = 25°C. VIN = 12V, per the Typical Application in Figure 20. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VIN Input DC Voltage VIN ≤ 5.5V, Tie VIN, INTVCC and PVCC Together, Tie RUNP l 4.7 15 V to GND VOUT VOUT Range l 0.6 3.3 V VOUT(DC) DC Output Voltage, Total CIN = 22µF × 5 l 1.4805 1.5 1.5195 V Variation with Line and Load COUT = 100µF × 4 Ceramic, 470µF POSCAP × 3 RFB = 40.2k, MODE_PLLIN = GND VIN = 4.75V to 15V, IOUT = 0A to 40A (Note 4)
Input Specifications
VRUNC RUNC Pin On Threshold VRUNC Rising 1.1 1.22 1.35 V VRUNCHYS RUNC Pin On Hysteresis 150 mV VRUNP RUNP Pin On Threshold RUNP Pin Rising l 0.7 0.8 0.9 V RUNP HYS RUNP Pin Hysteresis 60 mV HIZREG HIZREG Input Threshold VIN = 12V, RUNC = 5V, RUNP = VIN, VOUT = 1.5V 2.3 V HIZREG HYS HIZREG Hysteresis VIN = 12V, RUNC = 5V, RUNP = VIN, VOUT = 1.5V 0.8 V IQ(VIN) Input Supply Bias Current VIN = 12V, VOUT = 1.5V, Burst Mode Operation, IOUT = 0.1A 16 mA VIN = 12V, VOUT = 1.5V, Pulse-Skipping Mode, IOUT = 0.1A 23 mA VIN = 12V, VOUT = 1.5V, Switching Continuous, IOUT = 0.1A 105 mA Shutdown, RUN = 0, VIN = 12V 30 µA IS(VIN) Input Supply Current VIN = 5V, VOUT = 1.5V, IOUT = 40A 14.7 A VIN = 12V, VOUT = 1.5V, IOUT = 40A 5.66 A
Output Specifications
IOUT(DC) Output Continuous Current VIN = 12V, VOUT = 1.5V (Note 4) 0 40 A Range ∆VOUT (Line) Line Regulation Accuracy VOUT = 1.5V, VIN from 4.75V to 15V l 0.02 0.06 %/V VOUT IOUT = 0A ∆VOUT (Load) Load Regulation Accuracy VOUT = 1.5V, IOUT = 0A to 40A, VIN = 12V (Note 4) l 0.2 0.35 % VOUT VOUT(AC) Output Ripple Voltage IOUT = 0A, COUT = 100µF × 3 Ceramic, 470µF × 3 POSCAP, 15 mVP-P VIN = 12V, VOUT = 1.5V ∆VOUT(START) Turn-On Overshoot COUT = 100µF × 4 Ceramic, 470µF × 3 POSCAP, 5 mV VOUT = 1.5V, IOUT = 0A, VIN = 12V, TRACK/SS = 0.1µF tSTART Turn-On Time COUT = 100µF × 3 Ceramic, 470µF × 3 POSCAP, 50 ms No Load, TRACK/SS = 0.001µF, VIN = 12V ∆VOUTLS Peak Deviation for Dynamic Load: 0% to 50% to 0% of Full Load 45 mV Load COUT = 100µF × 4 Ceramic, 470µF × 3 POSCAP, VIN = 12V, VOUT = 1.5V, CFF = 22pF tSETTLE Settling Time for Dynamic Load: 0% to 50% to 0% of Full Load, VIN = 5V, 25 µs Load Step COUT = 100µF × 4 Ceramic, 470µF × 3 POSCAP, VIN = 12V, VOUT = 1.5V, CFF = 22pF IOUTPK Output Current Limit VIN = 12V, VOUT = 1.5V 54 A VIN = 5V, VOUT = 1.5V 54 A
Control Section
VFB Voltage at VFB Pin IOUT = 0A, VOUT = 1.5V l 0.594 0.600 0.606 V IFB Current at VFB Pin (Note 6) –30 –100 nA VOVL Feedback Overvoltage Measure at VOUTS1 l 5 7.5 10 % Lockout ITRACK/SS Track Pin Soft-Start Pull-Up TRACK/SS = 0V, Default 750µs Turn on with TRACK/SS 1.1 1.35 1.6 µA Current Tied to INTVCC tON(MIN) Minimum On-Time (Note 3) 100 ns RFBHI Resistor Between VOUTS1 4.99 kΩ and VFB Pins 4636f For more information www.linear.com/LTM4636 3 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Decoupling Requirements Operation Applications Information Typical Applications Package Description Package Photo Typical Application Design Resources Related Parts