Datasheet LTM4648 (Analog Devices) - 3

LTM4648
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the full internal operating temperature range, otherwise specifications are at TA = 25°C (Note 2). VIN = 5V per typical application. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VIN Input DC Voltage l 2.375 5.5 V VOUT(RANGE) Output Voltage Range l 0.6 5 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 = 2.375V to 5.5V, 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 = 5V, VOUT = 1.5V, Burst Mode Operation 5.5 mA VIN = 5V, VOUT = 1.5V, Pulse-Skipping Mode 25 mA VIN = 5V, VOUT = 1.5V, Switching Continuous 100 mA Shutdown, RUN = 0, VIN = 5V 2.5 mA IS(VIN) Input Supply Current VIN = 5.5V, VOUT = 1.5V, IOUT = 10A 3.3 A
Output Specifications
IOUT(DC) Output Continuous Current Range VIN = 5V, VOUT = 1.5V (Note 4) 0 10 A ΔVOUT(LINE) Line Regulation Accuracy VOUT = 1.5V, VIN from 2.375V to 5.5V IOUT = 0A l 0.010 0.04 %/V VOUT ΔVOUT(LOAD) Load Regulation Accuracy VOUT = 1.5V, IOUT = 0A to 10A, VIN = 5V (Note 4) l 0.15 0.5 % VOUT VOUT(AC) Output Ripple Voltage IOUT = 0A, COUT = 100µF Ceramic, 100µF POSCAP, 15 mV VIN = 5V, VOUT = 1.5V ΔVOUT(START) Turn-On Overshoot COUT = 100µF Ceramic, 100µF POSCAP, 20 mV VOUT = 1.5V, IOUT = 0A, VIN = 5V tSTART Turn-On Time COUT = 100µF Ceramic, 100µF POSCAP, 5 ms No Load, TRACK/SS = 0.01µF, VIN = 5V ΔVOUTLS Peak Deviation for Dynamic Load Load: 0% to 50% to 0% of Full Load, 60 mV COUT = 100µF Ceramic, 100µF POSCAP, VIN = 5V, 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 = 5V, VOUT=1.5V IOUTPK Output Current Limit VIN = 5V, VOUT = 1.5V (Note 4) 11 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 –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 = 5V, Run > 1.4V 0 3.6 V RANGE VDIFFOUT(MAX) Maximum DIFFOUT Voltage IDIFFOUT = 300µA INTVCC – 1.4 V VOS Input Offset Voltage VOSNS+ = VDIFFOUT = 1.5V, IDIFFOUT = 100µA 4 mV AV Differential Gain 1 V/V SR Slew Rate 2 V/µs Rev A For more information www.analog.com 3 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Typical Application Design Resources Related Parts Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Package Description Revision History Typical Application Design Resources Related Parts