Datasheet LTM4638 (Analog Devices) - 3
| Manufacturer | Analog Devices |
| Description | 20VIN, 15A Step-Down DC/DC µModule Regulator |
| Pages / Page | 30 / 3 — ELECTRICAL CHARACTERISTICS. The. denotes the specifications which apply … |
| Revision | B |
| File Format / Size | PDF / 2.3 Mb |
| Document Language | English |
ELECTRICAL CHARACTERISTICS. The. denotes the specifications which apply over the specified internal
Model Line for this Datasheet
Text Version of Document
LTM4638
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 = 12V per the typical application shown on the front page. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Switching Regulator Section: per Channel
VIN Input DC Voltage l 3.1 20 V VOUT Output Voltage Range l 0.6 5.5 V VOUT(DC) Output Voltage, Total CIN = 22µF, COUT = 100µF Ceramic, RFB = 40.2k, Variation with Line and Load MODE = INTVCC, IOUT = 0A to 15A (Note 3) (Note 6) –40°C to 125°C l 1.477 1.50 1.523 V VRUN RUN Pin On Threshold VRUN Rising 1.1 1.25 1.35 V IQ(VIN) Input Supply Bias Current VIN = 12V, VOUT = 1.5V, MODE = INTVCC 100 mA VIN = 12V, VOUT = 1.5V, MODE = GND 18 mA Shutdown, RUN = 0, VIN = 12V 20 µA IS(VIN) Input Supply Current VIN = 12V, VOUT = 1.5V, IOUT = 15A 2.3 A IOUT(DC) Output Continuous Current VIN = 12V, VOUT = 1.5V 0 15 A Range ΔVOUT (Line)/VOUT Line Regulation Accuracy VOUT = 1.5V, VIN = 3.1V to 20V, IOUT = 0A l 0.04 0.15 %/V ΔVOUT (Load)/VOUT Load Regulation Accuracy VOUT = 1.5V, IOUT = 0A to 15A l 0.5 1.2 % VOUT(AC) Output Ripple Voltage IOUT = 0A, COUT = 100µF Ceramic, VIN = 12V, 5 mV VOUT = 1.5V ΔVOUT(START) Turn-On Overshoot IOUT = 0A, COUT = 100µF Ceramic, VIN = 12V, 30 mV VOUT = 1.5V tSTART Turn-On Time COUT = 100µF Ceramic, No Load, TRACK/SS = 0.01µF, 2.5 ms VIN = 12V, VOUT = 1.5V ΔVOUTLS Peak Deviation for Dynamic Load: 0% to 50% to 0% of Full Load, COUT = 47µF 160 mV Load Ceramic, VIN = 12V, VOUT = 1.5V tSETTLE Settling Time for Dynamic Load: 0% to 50% to 0% of Full Load, COUT = 47µF 40 µs Load Step Ceramic, VIN = 12V, VOUT = 1.5V IOUTPK Output Current Limit VIN = 12V, VOUT = 1.5V 18 A VFB Voltage at FB Pin IOUT = 0A, VOUT = 1.5V l 0.594 0.60 0.606 V IFB Current at FB Pin (Note 4) ±30 nA RFBHI Resistor Between VOUT and 60.05 60.40 60.75 kΩ FB Pins ITRACK/SS Track Pin Soft-Start Pull-Up TRACK/SS = 0V 6 10 µA Current VIN(UVLO) VIN Undervoltage Lockout VIN Falling 2.5 2.6 2.7 V VIN Hysteresis 250 mV tON(MIN) Minimum On-Time (Note 4) 25 ns tOFF(MIN) Minimum Off-Time (Note 4) 50 ns VPGOOD PGOOD Trip Level VFB With Respect to Set Output VFB Ramping Negative –12 –8 –5 % VFB Ramping Positive 5 8 12 % IPGOOD PGOOD Leakage 2 µA VPGL PGOOD Voltage Low IPGOOD = 1mA 0.02 0.1 V Rev. B For more information www.analog.com 3 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Decoupling Requirements Operation Applications Information Package Description Revision History Package Photo Related Parts
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 = 12V per the typical application shown on the front page. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Switching Regulator Section: per Channel
VIN Input DC Voltage l 3.1 20 V VOUT Output Voltage Range l 0.6 5.5 V VOUT(DC) Output Voltage, Total CIN = 22µF, COUT = 100µF Ceramic, RFB = 40.2k, Variation with Line and Load MODE = INTVCC, IOUT = 0A to 15A (Note 3) (Note 6) –40°C to 125°C l 1.477 1.50 1.523 V VRUN RUN Pin On Threshold VRUN Rising 1.1 1.25 1.35 V IQ(VIN) Input Supply Bias Current VIN = 12V, VOUT = 1.5V, MODE = INTVCC 100 mA VIN = 12V, VOUT = 1.5V, MODE = GND 18 mA Shutdown, RUN = 0, VIN = 12V 20 µA IS(VIN) Input Supply Current VIN = 12V, VOUT = 1.5V, IOUT = 15A 2.3 A IOUT(DC) Output Continuous Current VIN = 12V, VOUT = 1.5V 0 15 A Range ΔVOUT (Line)/VOUT Line Regulation Accuracy VOUT = 1.5V, VIN = 3.1V to 20V, IOUT = 0A l 0.04 0.15 %/V ΔVOUT (Load)/VOUT Load Regulation Accuracy VOUT = 1.5V, IOUT = 0A to 15A l 0.5 1.2 % VOUT(AC) Output Ripple Voltage IOUT = 0A, COUT = 100µF Ceramic, VIN = 12V, 5 mV VOUT = 1.5V ΔVOUT(START) Turn-On Overshoot IOUT = 0A, COUT = 100µF Ceramic, VIN = 12V, 30 mV VOUT = 1.5V tSTART Turn-On Time COUT = 100µF Ceramic, No Load, TRACK/SS = 0.01µF, 2.5 ms VIN = 12V, VOUT = 1.5V ΔVOUTLS Peak Deviation for Dynamic Load: 0% to 50% to 0% of Full Load, COUT = 47µF 160 mV Load Ceramic, VIN = 12V, VOUT = 1.5V tSETTLE Settling Time for Dynamic Load: 0% to 50% to 0% of Full Load, COUT = 47µF 40 µs Load Step Ceramic, VIN = 12V, VOUT = 1.5V IOUTPK Output Current Limit VIN = 12V, VOUT = 1.5V 18 A VFB Voltage at FB Pin IOUT = 0A, VOUT = 1.5V l 0.594 0.60 0.606 V IFB Current at FB Pin (Note 4) ±30 nA RFBHI Resistor Between VOUT and 60.05 60.40 60.75 kΩ FB Pins ITRACK/SS Track Pin Soft-Start Pull-Up TRACK/SS = 0V 6 10 µA Current VIN(UVLO) VIN Undervoltage Lockout VIN Falling 2.5 2.6 2.7 V VIN Hysteresis 250 mV tON(MIN) Minimum On-Time (Note 4) 25 ns tOFF(MIN) Minimum Off-Time (Note 4) 50 ns VPGOOD PGOOD Trip Level VFB With Respect to Set Output VFB Ramping Negative –12 –8 –5 % VFB Ramping Positive 5 8 12 % IPGOOD PGOOD Leakage 2 µA VPGL PGOOD Voltage Low IPGOOD = 1mA 0.02 0.1 V Rev. B For more information www.analog.com 3 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Decoupling Requirements Operation Applications Information Package Description Revision History Package Photo Related Parts
