Datasheet LTM4613 (Analog Devices) - 3

LTM4613
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 = 24V, unless otherwise noted. Per Typical Application (front page) configuration. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VIN(DC) Input DC Voltage l 5 36 V VOUT(DC) Output Voltage, Total Variation CIN = 10µF × 3, COUT = 47µF × 4; FCB = 0, l 11.83 12.07 12.31 V with Line and Load VIN = 24V to 36V, VOUT = 12V
Input Specifications
VIN(UVLO) Undervoltage Lockout Threshold IOUT = 0A 3.2 4.8 V IINRUSH(VIN) Input Inrush Current at Start-Up IOUT = 0A; CIN = 10µF × 3, COUT = 47µF × 4; CSS = 22nF VOUT = 12V VIN = 24V 150 mA VIN = 36V 120 mA IQ(VIN) Input Supply Bias Current VIN = 36V, VOUT = 12V, Switching Continuous, IOUT = 0A 78 mA VIN = 24V, VOUT = 12V, Switching Continuous, IOUT = 0A 60 mA Shutdown, RUN = 0, VIN = 36V 50 µA IS(VIN) Input Supply Current VIN = 36V, VOUT = 12V, IOUT = 8A 2.90 A VIN = 24V, VOUT = 12V, IOUT = 8A 4.26 A VINTVCC Internal VCC Voltage VIN = 36V, RUN > 2V, IOUT = 0A 4.7 5 5.5 V
Output Specifications
IOUT(DC) Output Continuous Current Range VIN = 24V, VOUT = 12V (Note 4) 0 8 A ∆VOUT(LINE) Line Regulation Accuracy VOUT = 12V, FCB = 0V, VIN = 24V to 36V, V I 0.05 0.3 % OUT OUT = 0A l ∆VOUT(LOAD) Load Regulation Accuracy VOUT = 12V, FCB = 0V, IOUT = 0A to 8A (Note 4) V V 0.5 0.75 % OUT IN = 36V l VIN = 24V l 0.5 0.75 % VIN(AC) Input Ripple Voltage IOUT = 0A, CIN = 1 × 10µF X5R Ceramic and 1 × 100µF Electrolytic, 3 × 10µF X5R Ceramic on VD Pins VIN = 24V, VOUT = 12V (Note 5) 10 mVP-P VOUT(AC) Output Ripple Voltage IOUT = 0A, COUT = 1 × 10µF, 4 × 47µF X5R Ceramic VIN = 24V, VOUT = 12V 19 mVP-P fS Output Ripple Voltage Frequency VIN = 24V, VOUT = 12V, IOUT = 0A 600 kHz ∆VOUT(START) Turn-On Overshoot COUT = 47µF × 4, VOUT = 12V, IOUT = 0A, CSS = 22nF VIN = 36V 20 mV VIN = 24V 20 mV tSTART Turn-On Time COUT = 47µF × 4, VOUT = 12V, IOUT = 0A, CSS = Open VIN = 36V 0.3 ms VIN = 24V 0.3 ms ∆VOUT(LS) Peak Deviation for Dynamic Load Load: 0% to 50% to 0% of Full Load COUT = 1 × 10µF, 3 × 47µF X5R Ceramic, 1 × 47µF POSCAP 250 mV VIN = 24V, VOUT = 12V tSETTLE Settling Time for Dynamic Load Load: 0% to 50% to 0% of Full Load 100 µs Step COUT = 1 × 10µF, 3 × 47µF X5R Ceramic, 1 × 47µF POSCAP VIN = 24V, VOUT = 12V IOUT(PK) Output Current Limit COUT = 47µF × 4 VIN = 36V, VOUT = 12V 12 A VIN = 24V, VOUT = 12V 12 A 4613fd For more information www.linear.com/LTM4613 3 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Decoupling Requirements Operation Applications Information Package Photograph Related Parts