Datasheet LTM4641 (Analog Devices) - 4

LTM4641
e lecTrical 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 = VINH = VINL = 28V, per the typical application shown in Figure 45, unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VIN Input DC Voltage l 4.5 38 V VOUT Output Voltage Range Use RSET1A = RSET1B ≤ 8.2kΩ. RfSET Values l 0.6 6 V Recommended in Table 1 VOUT(DC) Output Voltage, Total Variation with 4.5V ≤ VIN ≤ 38V, 0A ≤ IOUT ≤ 10A l 1.773 1.800 1.827 V Line and Load, and Prior to UVLO VIN = 4V (Ramped Down from 4.5V), IOUT = 0A l 1.773 1.800 1.827 V
Input Specifications
VRUN(ON,OFF) RUN On/Off Threshold Run Rising, Turn On l 1.25 2 V Run Falling, Turn Off l 0.8 1.15 V IRUN(ON) RUN Pull-Up Current VRUN = 0V l –580 –520 –460 µA VRUN = 3.3V l –220 –165 –110 µA IRUN(OFF) RUN Pull-Down Current, Switching VRUN = 3.3V, UVLO = 0V (MHYST On) 1 nA Inhibited VINL(UVLO) VINL Undervoltage Lockout VINL Rising l 4.2 4.5 V VINL Falling l 3.5 3.8 4 V Hysteresis l 300 400 mV IINRUSH(VINH) Input Inrush Current Through VINH, CSS = Open 230 mA at Start-Up IQ(VINH) Power Stage Bias Current (IVINH) at IOUT = 0A and: No Load FCB ≥ 0.84V (Pulse-Skipping Mode) 8 mA FCB ≤ 0.76V (Forced Continuous Mode) 29 mA Shutdown, RUN = 0 0.2 mA IQ(VINL) Control Bias Current (IVINL) INTVCC Connected to DRVCC and: VIN = 28V, IOUT = 0A 14.5 mA VIN = 28V, IOUT = 10A 15.5 mA VIN = 28V, Shutdown, RUN = 0 5 mA IS(VINH) Power Stage Input Current (IVINH) at IOUT = 10A and: Full Load VIN = 4.5V 4.65 A VIN = 28V 790 mA VIN = 38V 590 mA
Output Specifications
IOUT(DC) Output Continuous Current Range (Note 3) l 0 10 A ∆VOUT(LINE)/VOUT Line Regulation Accuracy VIN from 4.5V to 38V, IOUT = 0A l 0.02 0.15 % ∆VOUT(LOAD)/VOUT Load Regulation Accuracy IOUT from 0A to 10A (Note 3) l 0.04 0.15 % VOUT(AC) Output Voltage Ripple Amplitude IOUT = 0A 16 mVP-P fS Output Voltage Ripple Frequency IOUT = 0A 290 kHz IOUT = 10A 330 kHz VOUT(START) Turn-On Overshoot IOUT = 0A 10 mV tSTART VIN-to-VOUT Start-Up Time RUN Electrically Open Circuit, Time Between 3 ms Application of VIN to VOUT Becoming Regulated, OVPGM = 1.5V, CTMR = CSS = Open tRUN(ON-DELAY) RUN-to-VOUT Turn-On Response VIN Established, (TMR-Set POR Time Expired) 175 400 μs Time Time Between RUN Releasing from GND to PGOOD Going Logic High, CSS = Open, OVPGM = 1.5V ∆VOUT(LS) Peak Deviation for Dynamic Load IOUT from 0A to 5A at 5A/µs 40 mV Step IOUT from 5A to 0A at 5A/µs 40 mV tSETTLE(LS) Settling Time for Dynamic Load Step IOUT from 0A to 5A at 5A/µs 20 μs IOUT from 5A to 0A at 5A/µs 20 µs 4641fe 4 For more information www.linear.com/LTM4641 Document Outline Features Applications Typical Application Description Table of Contents Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Simplified Block Diagram Decoupling Requirements Operation Applications Information—Power Supply Features Applications Information—Input Protection Features Applications Information—Load Protection Features Applications Information—EMI Performance Applications Information—Multimodule Parallel Operation Applications Information—Thermal Considerations and Output Current Derating Applications Information—Output Capacitance Table Applications Information—Safety and Layout Guidance Typical Applications Appendices Package Description Package Photo Package Description Revision History Typical Application Related Parts