Datasheet LTM4634 (Analog Devices) - 3

LTM4634
elecTrical characTerisTics The
l
denotes the specifications which apply over the specified internal operating temperature range (Note 2), otherwise specifications are at TA = 25°C. VIN = 24V, per the typical application for each regulator channel. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VIN Input DC Voltage CNTL_PWR Powered Tied to Input Supply l 4.75 28 V VOUT(RANGE) Output Voltage Range VOUT1, VOUT2 l 0.8 5.5 V Output Voltage Range VOUT3 l 0.8 13.5 V VOUT(DC) Output Voltage, Total Variation with Line CIN = 22µF × 3, COUT = 100µF Ceramic × 3, l 4.925 5.0 5.075 V and Load, VOUT1, VOUT2, VOUT3 RFB = 11.5k, MODE/PLLIN = 0V, VIN = 5.5V to 28V, IOUT1,2 = 0A to 5A, IOUT3 = 0A to 4A (Note 4)
Input Specifications
VRUN RUN1, RUN2, RUN3 Pin ON Threshold VRUN Rising 1.15 1.3 1.4 V VRUN(HYS) RUN Pin Hysteresis 175 mV IQ(VIN) Input Supply Bias Current Each Channel VOUT = 5V, Burst Mode Operation, IOUT = 0A 0.5 mA VOUT = 5V, Pulse-Skipping Mode, IOUT = 0A 1.6 mA VOUT = 5V, Switching Continuous, IOUT = 0A 45 mA Shutdown, RUN = 0V, VIN = 24V 10 µA IS(VIN) Input Supply Current Each Channel VIN = 12V, EXTVCC = 5VOUT IOUT1,2 = 5A 2.21 A VOUT1,2 = 5V, VOUT3 = 5V IOUT3 = 4A 1.76 A
Output Specifications (Note 4)
IOUT(DC) Output Continuous Current Range Each VOUT1,2 = 5V 0 5 A Channel VOUT3 = 5V 0 4 A ∆VOUT(LINE) Line Regulation Accuracy per Channel VOUT1 = VIN from 5.5V to 28V l 0.015 0.02 %/V I VOUT OUT = 0A, CNTL_PWR Tie to VIN ∆VOUT(LOAD) Load Regulation Accuracy per Channel VOUT = 5V, IOUT1,2 = 0A to 5A l 0.3 0.5 % Ch1, Ch2, I VOUT OUT3 = 0A to 4A VOUT(AC) Output Ripple Voltage per Channel IOUT = 0A, COUT = 100µF Ceramic × 3, 75 mV VIN = 24V, VOUT = 5V ∆VOUT(START) Turn-On Overshoot per Channel COUT = 100µF Ceramic × 3, VOUT = 5V, 50 mV IOUT = 0A, TK/SS = 0.01µF tSTART Turn-On Time per Channel COUT = 100µF Ceramic × 3, VOUT = 5V, 6 ms IOUT = 0A, TK/SS = 0.01µF VOUTLS Peak Deviation for Dynamic Load per Load: 0% to 50% to 0% of Full Load, 200 mV Channel COUT = 100µF Ceramic × 3, VOUT = 5V Typical Bench Data tSETTLE Settling Time for Dynamic Load Step per Load: 0% to 50% to 0% of Full Load, 50 µs Channel COUT = 100µF Ceramic × 3, VOUT = 5V Typical Bench Data IOUT(PK) Output Current Limit per Channel VOUT = 5V 8 A
Control Specifications
VFB Voltage at VFB Pin per Channel IOUT = 0A, VOUT = 5V 0.794 0.80 0.806 V l 0.792 0.80 0.808 V IFB Current at VFB Pin per Channel (Note 3) –10 –50 nA VOVL Feedback Overvoltage Lockout per l 0.84 0.86 0.88 V Channel ITK/SS Track Pin Soft-Start Pull-Up Current per TK/SS = 0V 1.1 1.5 1.9 µA Channel tON(MIN) Minimum On-Time (Note 3) 90 ns Max DC Maximum Duty Cycle 5.5V to 5V at 5A (Note 5) 95 % RFBHI Resistor Between VOUT and VFB Pins 60.0 60.4 60.8 kΩ 4634f For more information www.linear.com/LTM4634 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 Related Parts