Datasheet LTC3838-1 (Analog Devices) - 5
| 制造商 | Analog Devices |
| 描述 | Dual, Fast, Accurate Step-Down DC/DC Controller with Dual Differential Output Sensing |
| 页数 / 页 | 54 / 5 — elecTrical characTerisTics Note 1:. Note 4:. Note 2:. Note 5:. Note 3:. … |
| 文件格式/大小 | PDF / 890 Kb |
| 文件语言 | 英语 |
elecTrical characTerisTics Note 1:. Note 4:. Note 2:. Note 5:. Note 3:. Note 6:
该数据表的模型线
文件文字版本
LTC3838-1
elecTrical characTerisTics Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
Note 4:
This IC includes overtemperature protection that is intended to may cause permanent damage to the device. Exposure to any Absolute protect the device during momentary overload conditions. The maximum Maximum Rating condition for extended periods may affect device rated junction temperature will be exceeded when this protection is active. reliability and lifetime. Continuous operation above the specified absolute maximum operating
Note 2:
The junction temperature (T junction temperature may impair device reliability or permanently damage J, in °C) is calculated from the ambient temperature (T the device. A, in °C) and power dissipation (PD, in Watts) according to the formula:
Note 5:
The LTC3838-1 is tested in a feedback loop that adjusts voltages T on the V + and V + pins to achieve specified error amplifier J = TA + (PD • θJA) OUTSENSE1 DFB2 where θ output voltages (ITH1,2). JA (in °C/W) is the package thermal impedance.
Note 3:
The LTC3838-1 is tested under pulsed load conditions such that T In order to simplify the total system error computation, the regulated J ≈ T voltage is defined in one combined specification which includes the effects A. The LTC3838E-1 is guaranteed to meet specifications over the 0°C to 85°C operating junction temperature range. Specifications over the –40°C of line, load and common mode variation. The combined regulated voltage to 125°C operating junction temperature range are assured by design, specification is tested by independently varying line, load, and common characterization and correlation with statistical process controls. The mode, which by design do not significantly affect one another. For any LTC3838I-1 is guaranteed to meet specifications over the –40°C to 125°C combination of line, load, and common mode variation, the regulated operating junction temperature range . Note that the maximum ambient voltage should be within the limits specified that are tested in production temperature consistent with these specifications is determined by specific to the following conditions: operating conditions in conjunction with board layout, the rated package Line: V – – IN = 4.5V to 38V, ITH = 1.2V, VOUTSENSE1 = 0V, VDFB2 = 0V thermal impedance and other environmental factors. Load: V – – IN = 15V, ITH = 0.5V to 1.9V, VOUTSENSE1 = 0V, VDFB2 = 0V Common Mode: V – IN = 15V, ITH = 1.2V, VOUTSENSE1 = ±0.5V, ±0.2V, V – DFB2 = ±0.2V
Note 6:
Delay times are measured with top gate (TG) and bottom gate (BG) driving minimum load, and using 50% levels. 38381fa For more information www.linear.com3838-1 5 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Electrical Characteristics Pin Functions Functional Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts
elecTrical characTerisTics Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
Note 4:
This IC includes overtemperature protection that is intended to may cause permanent damage to the device. Exposure to any Absolute protect the device during momentary overload conditions. The maximum Maximum Rating condition for extended periods may affect device rated junction temperature will be exceeded when this protection is active. reliability and lifetime. Continuous operation above the specified absolute maximum operating
Note 2:
The junction temperature (T junction temperature may impair device reliability or permanently damage J, in °C) is calculated from the ambient temperature (T the device. A, in °C) and power dissipation (PD, in Watts) according to the formula:
Note 5:
The LTC3838-1 is tested in a feedback loop that adjusts voltages T on the V + and V + pins to achieve specified error amplifier J = TA + (PD • θJA) OUTSENSE1 DFB2 where θ output voltages (ITH1,2). JA (in °C/W) is the package thermal impedance.
Note 3:
The LTC3838-1 is tested under pulsed load conditions such that T In order to simplify the total system error computation, the regulated J ≈ T voltage is defined in one combined specification which includes the effects A. The LTC3838E-1 is guaranteed to meet specifications over the 0°C to 85°C operating junction temperature range. Specifications over the –40°C of line, load and common mode variation. The combined regulated voltage to 125°C operating junction temperature range are assured by design, specification is tested by independently varying line, load, and common characterization and correlation with statistical process controls. The mode, which by design do not significantly affect one another. For any LTC3838I-1 is guaranteed to meet specifications over the –40°C to 125°C combination of line, load, and common mode variation, the regulated operating junction temperature range . Note that the maximum ambient voltage should be within the limits specified that are tested in production temperature consistent with these specifications is determined by specific to the following conditions: operating conditions in conjunction with board layout, the rated package Line: V – – IN = 4.5V to 38V, ITH = 1.2V, VOUTSENSE1 = 0V, VDFB2 = 0V thermal impedance and other environmental factors. Load: V – – IN = 15V, ITH = 0.5V to 1.9V, VOUTSENSE1 = 0V, VDFB2 = 0V Common Mode: V – IN = 15V, ITH = 1.2V, VOUTSENSE1 = ±0.5V, ±0.2V, V – DFB2 = ±0.2V
Note 6:
Delay times are measured with top gate (TG) and bottom gate (BG) driving minimum load, and using 50% levels. 38381fa For more information www.linear.com3838-1 5 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Electrical Characteristics Pin Functions Functional Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts