LM2575HVS-ADJTI高压三端稳压器 - 图文

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ELECTRICAL CHARACTERISTICS LM1575-15, LM2575-15, LM2575HV-15

Specifications with standard type face are for TJ = 25°C, and those with boldface type apply over full Operating Temperature Range . Parameter Symbol Conditions Typ LM1575-15 Limit (1) LM2575-15 LM2575HV-15 Limit (2) Units (Limits) SYSTEM PARAMETERS Test Circuit Figure 25 and Figure 26(3) VOUT VIN = 30V, ILOAD = 0.2A Output Voltage Circuit Figure 25 and Figure 26 15 14.85 15.15 14.70 15.30 V V(Min) V(Max) VOUT Output Voltage LM1575/LM2575 0.2A ≤ ILOAD ≤ 1A, 18V ≤ VIN ≤ 40V 15 14.55/14.40 15.45/15.60 14.40/14.25 15.60/15.75 V V(Min) V(Max) V 14.40/14.25 15.68/15.83 V(Min) V(Max) Circuit Figure 25 and Figure 26 Output Voltage LM2575HV 0.2A ≤ ILOAD ≤ 1A, 18V ≤ VIN ≤ 60V VOUT 15 14.55/14.40 15.525/15.675 Circuit Figure 25 and Figure 26 Efficiency VIN = 18V, ILOAD = 1A

η 88 % ELECTRICAL CHARACTERISTICS LM1575-ADJ, LM2575-ADJ, LM2575HV-ADJ

Specifications with standard type face are for TJ= 25°C, and those with boldface type apply over full Operating Temperature Range. Symbol Parameter Conditions Typ LM1575-ADJ Limit (1) SYSTEM PARAMETERS Test Circuit Figure 25 and Figure 26(3) VOUT VIN = 12V, ILOAD = 0.2A Feedback Voltage VOUT = 5V Circuit Figure 25 and Figure 26 LM2575-ADJ LM2575HV-ADJ Limit (2) Units (Limits) 1.230 1.217 1.243 1.217 1.243 V V(Min) V(Max) VOUT Feedback Voltage LM1575/LM2575 0.2A ≤ ILOAD ≤ 1A, Figure 26 8V ≤ VIN ≤ 40V VOUT = 5V, Circuit Figure 25 and 1.230 1.205/1.193 1.193/1.180 V 1.267/1.280 1.193/1.180 V(Min) V(Max) V V(Min) V(Max) % VOUT 1.255/1.267 1.205/1.193 Feedback Voltage LM2575HV 0.2A ≤ ILOAD ≤ 1A, Figure 26 8V ≤ VIN ≤ 60V VOUT = 5V, Circuit Figure 25 and 1.230 1.261/1.273 1.273/1.286 η Efficiency VIN = 12V, ILOAD = 1A, VOUT = 5V 77

ELECTRICAL CHARACTERISTICS ALL OUTPUT VOLTAGE VERSIONS

Specifications with standard type face are for TJ = 25°C, and those with boldface type apply over full Operating

Temperature Range. Unless otherwise specified, VIN = 12V for the 3.3V, 5V, and Adjustable version, VIN = 25V for the 12V version, and VIN = 30V for the 15V version. ILOAD = 200 mA. LM2575-XX Symbol Parameter Conditions Typ LM1575-XX Limit (1) Units LM2575HV-XX (Limits) Limit (2) DEVICE PARAMETERS 100/500 nA kHz Ib f O Feedback Bias Current Oscillator Frequency VOUT = 5V (Adjustable Version Only) See (3) 50 52 100/500 Saturation Voltage 47/43 58/62 47/42 58/63 kHz(Min) kHz(Max) V V(Max) % %(Min) A A(Min) A(Max) mA(Max) mA mA(Max) mA mA(Max) μA μA(Max) V I SAT OUT DC Max Duty Cycle (ON) See (5) = 1A (4) 0.9 1.2/1.4 93 1.2/1.4 93 98 I Current Limit CL Peak Current (4)(3) 2.2 1.7/1.3 3.0/3.2 2 1.7/1.3 3.0/3.2 2 IL Output Leakage Current Output = 0V Output = ?1V 7.5 (6)(7) Output = ?1V 30 5 50 30 I Q Quiescent Current Standby Quiescent Current See (6) ISTBY θ 10/12 200/500 10 200 ON /OFF Pin = 5V (OFF) θJA θJC θJA θJA θJA JA Thermal Resistance TO-220 Package, Junction to Ambient (8) TO-220 Package, Junction to Ambient (9) TO-220 Package, Junction to Case CDIP Package, Junction to Ambient (10) SOIC Package, Junction to Ambient (10) DDPAK/TO-263 Package, Junction to Ambient (11) 65 45 2 85 100 37 °C/W (1) 在室温（标准型面）和极限温度下（粗体型面）规定的所有限值。所有限制均用于计算平均外发质量水平，并且均经过100％生产测

试。

(2) 在室温下（标准型面）和极限温度下（粗体型面）规定的所有限值。所有室温限制均经过100％生产测试。使用标准统计质量控制

（SQC）方法，通过相关性指定了极端温度下的所有限值。

(3) 在输出短路或过载的情况下，振荡器频率会降低至约18 kHz，这会导致调节后的输出电压从标称输出电压下降约40％。这种自我保护

功能通过将最小占空比从5％降低到大约2％，降低了IC的平均功耗。 (4) 输出（引脚2）拉电流。没有将二极管，电感器或电容器连接到输出引脚。 (5) 反馈（引脚4）已从输出中移除并连接到0V。

(6) 反馈（引脚4）已从输出端移除，并连接至+ 12V（可调，3.3V和5V版本），以及+ 25V（针对12V和15V版本），以强制输出晶体

管截止。

(7) VIN = 40V（高压版本为60V）。

(8) 垂直安装的5引线TO-220封装，在插座中或?铜板上具有?英寸引线的5引线TO-220封装与环境热阻（无外部散热器）的连接。 (9) 垂直安装的5引线TO-220封装与环境热阻（无外部散热器）的连接，将?英寸的引线焊接到PC板上，该PC板周围围绕着大约4平

方英寸的铜区域。

(10) 用大约1平方英寸的印刷电路板铜围绕引线连接到环境热阻。额外的铜面积将进一步降低热阻。请参阅《 Switchers made Simple》软

件中的热模型。

(11) 如果使用DDPAK / TO-263封装，可通过增加热连接至封装的PC板的铜面积来降低热阻：使用0.5平方英寸的铜面积，θJA为50° C / W；铜面积为1平方英寸时，θJA为37°C / W；且铜面积为1.6平方英寸或更大时，θJA为32°C / W。

ELECTRICAL CHARACTERISTICS ALL OUTPUT VOLTAGE VERSIONS (continued)

标准型面的规格适用于TJ = 25°C，而黑体型的规格适用于整个工作温度范围。除非另有说明，否则对于3.3V，5V和可调版本，VIN = 12V；对于12V版本，VIN = 25V；对于15V版本，VIN = 30V。 ILOAD = 200 mA。 Symbol Parameter Conditions Typ LM1575-XX Limit (1) LM2575-XX Units LM2575HV-XX (Limits) Limit (2) ON /OFF CONTROL Test Circuit Figure 25 and Figure 26 V IL IIH VIH ON /OFF Pin Logic Input Level VOUT = 0V 1.4 1.2 12 2.2/2.4 1.0/0.8 2.2/2.4 1.0/0.8 V(Min) V(Max) μA μA(Max) μA μA(Max) VOUT = Nominal Output Voltage ON /OFF Pin Input Current ON /OFF Pin = 5V (OFF) I 30 30 IL ON /OFF Pin = 0V (ON) 0 10 10

TYPICAL PERFORMANCE CHARACTERISTICS

(Circuit Figure 25 and Figure 26)

Normalized Output Voltage

Line Regulation

Figure 9.

Dropout Voltage

Figure 10.

Figure 11. Quiescent Current

Current Limit

Figure 12.

Standby Quiescent Current

Figure 13. Figure 14.