Datasheet LTM4649 (Analog Devices) - 3

LTM4649
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the specified internal operating temperature range, otherwise specifications are at TA = 25°C (Note 2). VIN = 12V per typical application. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VIN Input DC Voltage l 4.5 16 V VOUT(RANGE) Output Voltage Range l 0.6 3.3 V VOUT(DC) Output Voltage, Total Variation with CIN = 10µF × 1,COUT = 100µF Ceramic, l 1.477 1.50 1.523 V Line and Load 100µF POSCAP, RFB = 6.65k, MODE = GND, VIN = 4.5V to 16V, IOUT = 0A to 10A
Input Specifications
VRUN RUN Pin On Threshold VRUN Rising 1.1 1.25 1.4 V VRUN(HYS) RUN Pin On Hysteresis 150 mV IQ(VIN) Input Supply Bias Current VIN = 12V, VOUT = 1.5V, Burst Mode Operation 5 mA VIN = 12V, VOUT = 1.5V, Pulse-Skipping Mode 15 mA VIN = 12V, VOUT = 1.5V, Switching Continuous 75 mA Shutdown, RUN = 0, VIN = 12V 70 µA IS(VIN) Input Supply Current VIN = 12V, VOUT = 1.5V, IOUT = 10A 1.5 A
Output Specifications
IOUT(DC) Output Continuous Current Range VIN = 12V, VOUT = 1.5V (Note 4) 0 10 A ΔVOUT(LINE) Line Regulation Accuracy VOUT = 1.5V, VIN from 4.5V to 16V IOUT = 0A l 0.010 0.04 %/V VOUT ΔVOUT(LOAD) Load Regulation Accuracy VOUT = 1.5V, IOUT = 0A to 10A, VIN = 12V l 0.15 0.5 % VOUT (Note 4) VOUT(AC) Output Ripple Voltage IOUT = 0A, COUT = 100µF Ceramic, 100µF 15 mV POSCAP, VIN = 12V, VOUT = 1.5V ΔVOUT(START) Turn-On Overshoot COUT = 100µF Ceramic, 100µF POSCAP, 20 mV VOUT = 1.5V, IOUT = 0A, VIN = 12V tSTART Turn-On Time COUT = 100µF Ceramic, 100µF POSCAP, 5 ms No Load, TRACK/SS = 0.01µF, VIN = 12V ΔVOUTLS Peak Deviation for Dynamic Load Load: 0% to 50% to 0% of Full Load, 60 mV COUT = 100µF Ceramic, 100µF POSCAP, VIN = 12V, VOUT = 1.5V tSETTLE Settling Time for Dynamic Load Step Load: 0% to 50% to 0% of Full Load, 20 µs COUT = 100µF Ceramic, 100µF POSCAP, VIN = 12V, VOUT=1.5V IOUTPK Output Current Limit VIN = 12V, VOUT = 1.5V (Note 4) 12 A
Control Specifications
VFB Voltage at VFB Pin IOUT = 0A, VOUT = 1.5V l 0.593 0.60 0.607 V IFB Current at VFB Pin (Note 3) –12 –25 nA VOVL Feedback Overvoltage Lockout l 0.64 0.66 0.68 V ITRACK/SS Track Pin Soft-Start Pull-Up Current TRACK/SS = 0V 1.0 1.2 1.4 µA tON(MIN) Minimum On-Time (Note 3) 90 ns RFBHI Resistor Between VOUT_LCL and VFB 9.90 10 10.10 kΩ Pins DIFFP, DIFFN CM Common Mode Input Range VIN = 12V, Run > 1.4V 0 3.6 V RANGE VDIFFOUT(MAX) Maximum DIFFOUT Voltage IDIFFOUT = 300µA INTVCC-1.4 V VOS Input Offset Voltage VDIFFP = VDIFFOUT = 1.5V, IDIFFOUT = 100µA 4 mV AV Differential Gain (Note 3) 1 V/V 4649fc For more information www.linear.com/LTM4649 3 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Package Photo Revision History Typical Application Design Resources Related Parts