Datasheet LTM4671 (Analog Devices) - 4

link to page 30 LTM4671
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the specified internal operating temperature range. Specified as each individual output channel. TA = 25°C (Note 2), SVIN = VIN = 12V, unless otherwise noted. Per the typical application in Figure 30. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VRUN RUN Pin ON Threshold VRUN Rising 1.10 1.20 1.30 V Hysteresis 150 mV UVLO Undervoltage Lockout INTVCC Falling 2.4 2.55 2.7 V Hysteresis 0.4 V ITRACK/SS Track Pin Soft-Start Pull-Up Current TRACK/SS = 0V 6 µA tON(MIN) Minimum On-Time (Note 5) 25 ns tOFF(MIN) Minimum Off-Time (Note 5) 80 ns VPGOOD PGOOD Trip Level VFB With Respect to Set Output VFB Ramping Negative –10 –8 –6 % VFB Ramping Positive 6 8 10 % RPGOOD PGOOD Pull-Down Resistance 1mA Load 8 15 Ω INTVCC Internal VCC Voltage 3.2 3.3 3.4 V FREQ Default Switching Frequency 600 kHz CLKIN_H CLKIN_H Input High Threshold 1 V CLKIN_H Input Low Threshold 0.3 V
Switching Regulator Section: (5A Channels)
VIN Input DC Voltage l 3.1 20 V VIN(AFTER START-UP) Input DC Voltage After Start-Up l 2.9 20 V VOUT(RANGE) Output Voltage Range l 0.6 5.5 V VOUT(DC) Output Voltage, Total Variation with CIN = 22µF, COUT = 100µF Ceramic l 1.477 1.50 1.523 V Line and Load RFB = 40.2k, Continuous Current Mode VIN = 3.1V to 20V, IOUT = 0A to 5A IQ(VIN) Input Supply Bias Current VIN = 12V, VOUT = 1.5V, Continuous Current Mode 18 mA VIN = 12V, VOUT = 1.5V, Burst Mode Operation (IOUT = 0.5A 82 mA VIN = 12V, RUN = 0V, Shutdown 75 µA IS(VIN) Input Supply Current VIN = 12V, VOUT = 1.5V, IOUT = 5A 0.7 A IOUT(DC) Output Continuous Current Range VIN = 12V, VOUT = 1.5V (Note 4) 0 5 A ∆VOUT(LINE)/VOUT Line Regulation Accuracy VOUT = 1.5V, VIN = 3.1V to 20V, IOUT = 0A l 0.001 0.05 %/V ∆VOUT(LOAD)/VOUT Load Regulation Accuracy VOUT = 1.5V, IOUT = 0A to 5A l 0.2 0.5 % VOUT(AC) Output Ripple Voltage IOUT = 0A, COUT = 100µF Ceramic 8 mV VIN = 12V, VOUT = 1.5V ∆VOUT(START) Turn-On Overshoot IOUT = 0A, COUT = 100µF Ceramic, 15 mV VIN = 12V, VOUT = 1.5V tSTART Turn-On Time TRACK/SS = 0.01µF, 5 ms VIN = 12V, VOUT = 1.5V, COUT = 100µF Ceramic ∆VOUTLS Peak Deviation for Dynamic Load Load: 0% to 25% to 0% of Full Load 30 mV VIN = 12V, VOUT = 1.5V, COUT = 100µF Ceramic tSETTLE Settling Time for Dynamic Load Step Load: 0% to 25% to 0% of Full Load 70 µs VIN = 12V, VOUT = 1.5V, COUT = 100µF Ceramic IOUTPK Output Current Limit VIN = 12V, VOUT = 1.5V 6 A VFB Voltage at VFB Pin IOUT = 0A, VOUT = 1.5V l 0.592 0.6 0.608 V IFB Current at VFB Pin (Note 6) ±30 nA RFB(TOP) Resistor Between VOUT and VFB Pins 60.05 60.40 60.75 kΩ VRUN RUN Pin ON Threshold VRUN Rising 1.15 1.25 1.35 V Hysteresis 200 mV Rev. B 4 For more information www.analog.com Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Decoupling Requirements Operation Applications Information Typical Applications Component BGA Pinout Package Description Revision History Package Photo Related Parts