Datasheet LTM4651 (Analog Devices) - 7
| 制造商 | Analog Devices |
| 描述 | EN55022B Compliant 58V, 24W Inverting-Output DC/DC μModule Regulator |
| 页数 / 页 | 36 / 7 — TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. … |
| 修订版 | A |
| 文件格式/大小 | PDF / 2.2 Mb |
| 文件语言 | 英语 |
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. –5V Transient Response, 24VIN
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文件文字版本
LTM4651
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. –5V Transient Response, 24VIN –24V Transient Response, 12VIN Start-Up, No Load
V V – – IN OUT VOUT 5V/DIV 100mV/DIV 100mV/DIV AC-COUPLED AC-COUPLED V – OUT 10V/DIV IOUT IOUT RUN 1A/DIV 0.4A/DIV 2V/DIV PGOOD 5V/DIV 40μs/DIV 4651 G07 20μs/DIV 4651 G08 1ms/DIV 4651 G09 FIGURE 32 CIRCUIT, 24VIN, FIGURE 32 CIRCUIT, FIGURE 32 CIRCUIT, APPLICATION OF 12VIN, CINOUT = CIN = CDGND = CD = 4.7μF, 0.625A TO 1.25A LOAD STEP AT 0.625A/μs START-UP INTO NO LOAD COUT = 47μF ×2, RfSET = 665kΩ, RISET = 100kΩ, RPGDFB = 36.5kΩ, REXTVCC = 20Ω, 1.8A TO 3.8A LOAD STEP AT 2A/μs
Start-Up, 1.25A Load Start-Up, Pre-Bias
V – IN VOUT 5V/DIV 10V/DIV V – OUT IDIODE 10V/DIV 100mA/DIV IOUT RUN 500mA/DIV 2V/DIV PGOOD PGOOD 5V/DIV 2V/DIV 1ms/DIV 4651 G10 1ms/DIV 4651 G11 FIGURE 32 CIRCUIT, APPLICATION OF 12V – IN, FIGURE 32 CIRCUIT, VOUT PRE-BIASED START-UP INTO 19.2Ω LOAD TO –5V THROUGH A 1N4148 DIODE PRIOR TO RUN TOGGLING HIGH
Short Circuit, No Load Short Circuit, 1.25A Load
V – – OUT VOUT 10V/DIV 10V/DIV IIN IIN 10A/DIV 10A/DIV 10μs/DIV 4651 G12 10μs/DIV 4651 G13 FIGURE 32 CIRCUIT, FIGURE 32 CIRCUIT, NO LOAD PRIOR TO APPLICATION OF 19.2Ω LOAD PRIOR TO APPLICATION OF V – – OUT SHORT-CIRCUIT VOUT SHORT-CIRCUIT Rev. A For more information www.analog.com 7 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Simplified Block Diagram Test Circuit Decoupling Requirements Operation Applications Information Typical Applications Package Photograph Package Description Typical Application Related Parts
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. –5V Transient Response, 24VIN –24V Transient Response, 12VIN Start-Up, No Load
V V – – IN OUT VOUT 5V/DIV 100mV/DIV 100mV/DIV AC-COUPLED AC-COUPLED V – OUT 10V/DIV IOUT IOUT RUN 1A/DIV 0.4A/DIV 2V/DIV PGOOD 5V/DIV 40μs/DIV 4651 G07 20μs/DIV 4651 G08 1ms/DIV 4651 G09 FIGURE 32 CIRCUIT, 24VIN, FIGURE 32 CIRCUIT, FIGURE 32 CIRCUIT, APPLICATION OF 12VIN, CINOUT = CIN = CDGND = CD = 4.7μF, 0.625A TO 1.25A LOAD STEP AT 0.625A/μs START-UP INTO NO LOAD COUT = 47μF ×2, RfSET = 665kΩ, RISET = 100kΩ, RPGDFB = 36.5kΩ, REXTVCC = 20Ω, 1.8A TO 3.8A LOAD STEP AT 2A/μs
Start-Up, 1.25A Load Start-Up, Pre-Bias
V – IN VOUT 5V/DIV 10V/DIV V – OUT IDIODE 10V/DIV 100mA/DIV IOUT RUN 500mA/DIV 2V/DIV PGOOD PGOOD 5V/DIV 2V/DIV 1ms/DIV 4651 G10 1ms/DIV 4651 G11 FIGURE 32 CIRCUIT, APPLICATION OF 12V – IN, FIGURE 32 CIRCUIT, VOUT PRE-BIASED START-UP INTO 19.2Ω LOAD TO –5V THROUGH A 1N4148 DIODE PRIOR TO RUN TOGGLING HIGH
Short Circuit, No Load Short Circuit, 1.25A Load
V – – OUT VOUT 10V/DIV 10V/DIV IIN IIN 10A/DIV 10A/DIV 10μs/DIV 4651 G12 10μs/DIV 4651 G13 FIGURE 32 CIRCUIT, FIGURE 32 CIRCUIT, NO LOAD PRIOR TO APPLICATION OF 19.2Ω LOAD PRIOR TO APPLICATION OF V – – OUT SHORT-CIRCUIT VOUT SHORT-CIRCUIT Rev. A For more information www.analog.com 7 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Simplified Block Diagram Test Circuit Decoupling Requirements Operation Applications Information Typical Applications Package Photograph Package Description Typical Application Related Parts