Datasheet LTM4608A (Analog Devices) - 3

LTM4608A
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 = 5V unless otherwise noted. See Figure 1. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VIN(DC) Input DC Voltage l 2.7 5.5 V VOUT(DC) Output Voltage, Total Variation CIN = 10µF × 1, COUT = 100µF Ceramic, with Line and Load 100µF POSCAP, RFB = 6.65k, MODE = 0V VIN = 2.7V to 5.5V, IOUT = IOUT(DC)MIN to 1.472 1.49 1.508 V I l OUT(DC)MAX (Note 3) 1.464 1.49 1.516 V
Input Specifications
VIN(UVLO) Undervoltage Lockout Threshold SVIN Rising 2.05 2.2 2.35 V SVIN Falling 1.85 2.0 2.15 V IQ(VIN) Input Supply Bias Current VIN = 3.3V, No Switching, MODE = VIN 400 µA VIN = 3.3V, No Switching, MODE = 0V 1.15 mA VIN = 3.3V, VOUT = 1.5V, Switching Continuous 55 mA VIN = 5V, No Switching, MODE = VIN 450 µA VIN = 5V, No Switching, MODE = 0V 1.3 mA VIN = 5V, VOUT = 1.5V, Switching Continuous 75 mA Shutdown, RUN = 0, VIN = 5V 1 µA IS(VIN) Input Supply Current VIN = 3.3V, VOUT = 1.5V, IOUT = 8A 4.5 A VIN = 5V, VOUT = 1.5V, IOUT = 8A 2.93 A
Output Specifications
IOUT(DC) Output Continuous Current Range VOUT = 1.5V (Note 3) VIN = 3.3V, 5.5V 0 8 A VIN = 2.7V 0 5 A ∆VOUT(LINE) Line Regulation Accuracy VOUT = 1.5V, VIN from 2.7V to 5.5V, IOUT = 0A l 0.1 0.25 %/V VOUT ∆VOUT(LOAD) Load Regulation Accuracy VOUT = 1.5V (Note 3) VOUT VIN = 3.3V, 5.5V, ILOAD = 0A to 8A l 0.3 0.75 % VIN = 2.7V, ILOAD = 0A to 5A l 0.3 0.75 % VOUT(AC) Output Ripple Voltage IOUT = 0A, COUT = 100µF X5R Ceramic, VIN = 5V, VOUT = 1.5V 10 mVP-P fS Switching Frequency IOUT = 8A, VIN = 5V, VOUT = 1.5V 1.25 1.5 1.75 MHz fSYNC SYNC Capture Range 0.75 2.25 MHz ∆VOUT(START) Turn-On Overshoot COUT = 100µF, VOUT = 1.5V, IOUT = 0A VIN = 3.3V 10 mV VIN = 5V 10 mV tSTART Turn-On Time COUT = 100µF, VOUT = 1.5V, VIN = 5V, 100 µs IOUT = 1A Resistive Load, Track = VIN, ∆VOUT(LS) Peak Deviation for Dynamic Load Load: 0% to 50% to 0% of Full Load, 15 mV COUT = 100µF Ceramic, 100µF POSCAP, VIN = 5V, VOUT = 1.5V tSETTLE Settling Time for Dynamic Load Load: 0% to 50% to 0% of Full Load, VIN = 5V, 10 µs Step VOUT = 1.5V, COUT = 100µF IOUT(PK) Output Current Limit COUT = 100µF VIN = 2.7V, VOUT = 1.5V 8 A VIN = 3.3V, VOUT = 1.5V 11 A VIN = 5V, VOUT = 1.5V 13 A 4608afe For more information www.linear.com/LTM4608A 3 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Order Information Typical Performance Characteristics Pin Functions Simplified Block Diagram Operation Applications Information Typical Applications Package Description Package Photo Revision History Package Description Related Parts