LTM8029_1208 LINER [Linear Technology], LTM8029_1208 Datasheet
LTM8029_1208
Related parts for LTM8029_1208
LTM8029_1208 Summary of contents
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FeaTures Complete Switch Mode Power Supply n Low Quiescent Current Burst Mode n 5μ 12V to 3. OUT 600mA Output Current n Wide Input Voltage Range: 4.5V to 36V (40V n Output Voltage: 1.2V to 18V ...
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LTM8029 absoluTe MaxiMuM raTings (Notes RUN ..................................................................40V BIAS ................................................................20V OUT V + BIAS .................................................................55V IN PGOOD , FB, RT ..........................................................6V Maximum Internal Temperature ........................... 125°C Solder Temperature ............................................... 260°C orDer inForMaTion LEAD FREE ...
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T PARAMETER Minimum Input Voltage Output DC Voltage Output DC Current Quiescent Current Into V IN BIAS Current Line Regulation Load Regulation Output RMS Voltage Ripple Switching Frequency Voltage at FB Pin ...
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LTM8029 Typical perForMance characTerisTics T = 25°C, unless otherwise noted. Configured per Table 1, where applicable. A 2.5V Efficiency vs Output OUT Current, BIAS = 12V IN 55 24V IN ...
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Typical perForMance characTerisTics T = 25°C, unless otherwise noted. Configured per Table 1, where applicable. A Input Current vs Output Current BIAS = 5V OUT 500 12V IN 450 24V IN 36V IN 400 350 300 250 200 ...
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LTM8029 Typical perForMance characTerisTics T = 25°C, unless otherwise noted. Configured per Table 1, where applicable Output Current, BIAS 8V , BIAS = 5V OUT 10 12V IN 9 24V IN 36V ...
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Typical perForMance characTerisTics T = 25°C, unless otherwise noted. Configured per Table 1, where applicable. A Temperature Rise vs Output Current, 3.3V OUT 18 12V IN 24V 16 IN 36V ...
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LTM8029 pin FuncTions V (Bank 1): The V pins supply current to the LTM8029’ internal regulator and to the internal power switch. This pin must be locally bypassed with an external, low ESR capacitor; see Table 1 for ...
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The LTM8029 is a standalone non-isolated step-down switching DC/DC power supply that can deliver up to 600mA of output current. This device features a very low quiescent current and provides a precisely regulated output voltage from 1.2V to 18V. ...
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LTM8029 applicaTions inForMaTion For most applications, the design process is straight forward, summarized as follows: 1. Look at Table 1 and find the row that has the desired input range and output voltage. 2. Apply the recommended ...
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Table 1. Recommended Component Values and Configuration V (V OUT IN 4.5-36 1.2 4.7µF 50V 1206 X5R 4.5-36 1.5 4.7µF 50V 1206 X5R 4.5-36 1.8 4.7µF 50V 1206 X5R 4.5-36 2 4.7µF 50V 1206 ...
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LTM8029 applicaTions inForMaTion Frequency Selection The LTM8029 uses a constant frequency PWM architec- ture that can be programmed to switch from 200kHz to 2.2MHz by using a resistor tied from the RT pin to ground. Table 2 provides a list ...
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RUN The LTM8029 is in shutdown when the RUN pin is low and active when the pin is high. The rising threshold of the RUN comparator is typically 1.15V, with a 30mV hysteresis. This threshold is accurate when ...
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LTM8029 applicaTions inForMaTion Power Good The PGOOD pin is the open-collector output of an internal comparator that monitors the voltage at the FB pin used to indicate whether the output is near or within regulation. Specifically, PGOOD is ...
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Thermal Considerations The LTM8029 output current may need to be derated required to operate in a high ambient temperature or deliver a large amount of continuous power. The amount of current derating is dependent upon ...
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LTM8029 applicaTions inForMaTion Given these definitions, it should now be apparent that none of these thermal coefficients reflects an actual physical operating condition of a µModule converter. Thus, none of them can be individually used to accurately predict the thermal ...
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Step-Down Converter LTM8029 OUT 4.5V TO 12V RUN 2.2µF BIAS PGOOD RT GND FB 309k 7.8V TO 36V –5V Inverting Output Converter LTM8029 4.5V TO 31V RUN ...
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LTM8029 package DescripTion Table 3. Pin Assignment Table (Arranged by Pin Number) PIN FUNCTION A1 RUN – PIN FUNCTION E1 GND E2 GND E3 GND E4 GND E5 GND 18 PIN ...
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DescripTion Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa- tion that the interconnection of its circuits as described herein will ...
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LTM8029 Typical applicaTion –12V Inverting Output Converter LTM8029 OUT 4.5V TO 31V RUN BIAS 2.2µF PGOOD RT GND FB 137k package phoTo relaTeD parTs PART NUMBER DESCRIPTION LTM8020 36V, 200mA µModule Regulator LTM8021 36V, 500mA ...