LTC3406-1.2 Linear Technology, LTC3406-1.2 Datasheet
LTC3406-1.2
Related parts for LTC3406-1.2
LTC3406-1.2 Summary of contents
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... The internal synchronous switch increases efficiency and eliminates the need for an external Schottky diode. The LTC3406-1.2 is available in a low profile (1mm) ThinSOT package. , LTC and LT are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners ...
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... Specifications over the –40°C to 85°C operating temperature range are assured by design, characterization and correlation with statistical process controls. Note calculated from the ambient temperature T J dissipation P according to the following formula: D LTC3406-1. )(250°C/ ...
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... DS(ON) 0 2. 4.2V IN 0.5 0.4 0.3 0.2 0.1 MAIN SWITCH SYNCHRONOUS SWITCH –50 – TEMPERATURE (°C) LTC3406-1.2 www.DataSheet4U.com T = 25°C unless otherwise specified. A Reference Voltage vs Temperature 1.228 V = 3.6V IN 1.218 1.208 1.198 1.188 1.178 = 2.7V = 3.6V = 4.2V 1.168 –50 – 1000 TEMPERATURE (°C) 340612 GO2 Output Voltage vs Load Current 1 ...
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... LTC3406-1 TYPICAL PERFOR A CE CHARACTERISTICS (From Figure 1) Supply Current vs Temperature 3. LOAD –50 – TEMPERATURE (°C) Switch Leakage vs Input Voltage 120 RUN = 25°C A 100 SYNCHRONOUS SWITCH INPUT VOLTAGE (V) ...
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... W SLOPE COMP OSC – – SWITCHING LOGIC RS LATCH – BLANKING OV CIRCUIT OVDET + LTC3406-1.2 www.DataSheet4U.com Load Step V OUT I LOAD I L 340612 G17 20µs/DIV 200mA TO 600mA LOAD 0.65V 5Ω – + ...
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... OUT 10µF CER Burst Mode Operation 340612 F01 The LTC3406-1.2 is capable of Burst Mode operation in which the internal power MOSFETs operate intermittently based on load demand. In Burst Mode operation, the peak current of the inductor is set to approximately 200mA regardless of the output load. Each burst event can last from a few cycles at light loads to almost continuously cycling with short sleep intervals at moderate loads ...
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... The choice of which style inductor to use often depends more on the price vs size requirements and any radiated field/EMI requirements than on what the LTC3406-1.2 requires to operate. Table 1 shows some typical surface mount inductors that work well in LTC3406-1.2 applications Table 1 ...
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... L1, L2, etc. are the individual losses as a percentage of input power. Although all dissipative elements in the circuit produce losses, two main sources usually account for most of the losses in LTC3406-1.2 circuits losses. The V efficiency loss at very low load currents whereas the I loss dominates the efficiency loss at medium to high load currents ...
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... Thermal Considerations In most applications the LTC3406-1.2 does not dissipate much heat due to its high efficiency. But, in applications where the LTC3406-1.2 is running at high ambient tem- perature with low supply voltage, the heat dissipated may exceed the maximum junction temperature of the part. If the junction temperature reaches approximately 150°C, both power switches will be turned off and the SW node will become high impedance ...
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... Design Example OUT can be moni- OUT As a design example, assume the LTC3406-1.2 is used in a single lithium-ion battery-powered cellular phone application. The V 4.2V down to about 2.7V. The load current requirement is a maximum of 0.6A but most of the time it will be in standby mode, requiring only 2mA. Efficiency at both low and high load currents is important ...
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... U TYPICAL APPLICATIO S Single Li-Ion 1.2V/600mA Regulator for Lowest Profile, ≤1mm High LTC3406-1.2 Efficiency 100 0 LOAD (mA) PACKAGE DESCRIPTIO 0.62 MAX 3.85 MAX 2.62 REF RECOMMENDED SOLDER PAD LAYOUT PER IPC CALCULATOR 0.20 BSC DATUM ‘A’ 0.30 – 0.50 REF NOTE: 1. DIMENSIONS ARE IN MILLIMETERS 2 ...
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... LTC3406-1.2 RELATED PARTS PART NUMBER DESCRIPTION LT1616 500mA (I ), 1.4MHz, High Efficiency Step-Down OUT DC/DC Converter LT1676 450mA (I ), 100kHz, High Efficiency Step-Down OUT DC/DC Converter LTC1701/LT1701B 750mA (I ), 1MHz, High Efficiency Step-Down OUT DC/DC Converter LT1776 500mA (I ), 200kHz, High Efficiency Step-Down OUT DC/DC Converter LTC1877 600mA (I ), 550kHz, Synchronous Step-Down ...