Datasheet LTM4623 (Analog Devices) - 6
| 制造商 | Analog Devices |
| 描述 | Ultrathin 20VIN, 3A Step-Down DC/DC µModule Regulator |
| 页数 / 页 | 28 / 6 — 3.3V Output Transient Response. 5V Output Transient Response. Start-Up … |
| 修订版 | D |
| 文件格式/大小 | PDF / 305 Kb |
| 文件语言 | 英语 |
3.3V Output Transient Response. 5V Output Transient Response. Start-Up with No Load Applied. Short Circuit with No Load
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LTM4623 TYPICAL PERFORMANCE CHARACTERISTICS
3.3V Output Transient Response 5V Output Transient Response Start-Up with No Load Applied
VOUT VOUT I 50mV/DIV 50mV/DIV IN 0.5A/DIV AC-COUPLED AC-COUPLED LOAD STEP LOAD STEP VOUT 1A/DIV 1A/DIV 0.5V/DIV VIN = 12V 20µs/DIV 4623 G10 VIN = 12V 20µs/DIV 4623 G11 V 5ms/DIV 4623 G12 V IN = 12V OUT = 3.3V VOUT = 5V V FREQ = 1MHz FREQ = 1MHz OUT = 1.5V FREQ = 1MHz OUTPUT CAPACITOR = 1 × 47µF CERAMIC CAP OUTPUT CAPACITOR = 1 × 47µF CERAMIC CAP INPUT CAPACITOR = 1 × 22µF CERAMIC CAP LOAD STEP = 2A TO 3A WITH 1A/µS SLEW RATE LOAD STEP = 2A TO 3A WITH 1A/µS SLEW RATE OUTPUT CAPACITOR = 1 × 47µF CERAMIC CAP FEED FORWARD CAP = 100pF FEED FORWARD CAP = 100pF SOFT START = 0.1µF
Short Circuit with No Load Short Circuit with 3A Load Start-Up with 3A Load Applied Applied Applied
IIN IIN IIN 0.5A/DIV 0.5A/DIV 0.5A/DIV V VOUT OUT 0.5V/DIV 0.5V/DIV VOUT 0.5V/DIV VIN = 12V 5ms/DIV 4623 G13 VIN = 12V 5ms/DIV 4623 G14 VIN = 12V 20µs/DIV 4623 G15 VOUT = 1.5V VOUT = 1.5V VOUT = 1.5V FREQ = 1MHz FREQ = 1MHz FREQ = 1MHz INPUT CAPACITOR = 1 × 22µF CERAMIC CAP INPUT CAPACITOR = 1 × 22µF CERAMIC CAP INPUT CAPACITOR = 1 × 22µF CERAMIC CAP OUTPUT CAPACITOR = 1 × 47µF CERAMIC CAP OUTPUT CAPACITOR = 1 × 47µF CERAMIC CAP OUTPUT CAPACITOR = 1 × 47µF CERAMIC CAP SOFT START = 0.1µF
Short Circuit with 3A Load Applied Output Ripple Start into Pre-Biased Output
VIN I 2V/DIV IN 0.5A/DIV V V OUT OUT 0.5V/DIV 5mV/DIV VOUT AC-COUPLED 1V/DIV PRE-BIASED VOUT = 2.5V VIN = 12V 20µs/DIV 4623 G16 VIN = 12V 500ns/DIV 4623 G17 VIN = 12V 500ns/DIV 4623 G18 VOUT = 1.5V VOUT = 5V VOUT = 5V FREQ = 1MHz FREQ = 1MHz FREQ = 1MHz INPUT CAPACITOR = 1 × 22µF CERAMIC CAP INPUT CAPACITOR = 1 × 22µF CERAMIC CAP PRE-BIASED VOUT = 2.5V OUTPUT CAPACITOR = 1 × 47µF CERAMIC CAP OUTPUT CAPACITOR = 1 × 47µF CERAMIC CAP INPUT CAPACITOR = 1 × 22µF CERAMIC CAP OUTPUT CAPACITOR = 1 × 47µF CERAMIC CAP Rev D 6 For more information www.analog.com Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Decoupling Requirements Operation Applications Information Package Description Revision History Package Photos Design Resources Related Parts
3.3V Output Transient Response 5V Output Transient Response Start-Up with No Load Applied
VOUT VOUT I 50mV/DIV 50mV/DIV IN 0.5A/DIV AC-COUPLED AC-COUPLED LOAD STEP LOAD STEP VOUT 1A/DIV 1A/DIV 0.5V/DIV VIN = 12V 20µs/DIV 4623 G10 VIN = 12V 20µs/DIV 4623 G11 V 5ms/DIV 4623 G12 V IN = 12V OUT = 3.3V VOUT = 5V V FREQ = 1MHz FREQ = 1MHz OUT = 1.5V FREQ = 1MHz OUTPUT CAPACITOR = 1 × 47µF CERAMIC CAP OUTPUT CAPACITOR = 1 × 47µF CERAMIC CAP INPUT CAPACITOR = 1 × 22µF CERAMIC CAP LOAD STEP = 2A TO 3A WITH 1A/µS SLEW RATE LOAD STEP = 2A TO 3A WITH 1A/µS SLEW RATE OUTPUT CAPACITOR = 1 × 47µF CERAMIC CAP FEED FORWARD CAP = 100pF FEED FORWARD CAP = 100pF SOFT START = 0.1µF
Short Circuit with No Load Short Circuit with 3A Load Start-Up with 3A Load Applied Applied Applied
IIN IIN IIN 0.5A/DIV 0.5A/DIV 0.5A/DIV V VOUT OUT 0.5V/DIV 0.5V/DIV VOUT 0.5V/DIV VIN = 12V 5ms/DIV 4623 G13 VIN = 12V 5ms/DIV 4623 G14 VIN = 12V 20µs/DIV 4623 G15 VOUT = 1.5V VOUT = 1.5V VOUT = 1.5V FREQ = 1MHz FREQ = 1MHz FREQ = 1MHz INPUT CAPACITOR = 1 × 22µF CERAMIC CAP INPUT CAPACITOR = 1 × 22µF CERAMIC CAP INPUT CAPACITOR = 1 × 22µF CERAMIC CAP OUTPUT CAPACITOR = 1 × 47µF CERAMIC CAP OUTPUT CAPACITOR = 1 × 47µF CERAMIC CAP OUTPUT CAPACITOR = 1 × 47µF CERAMIC CAP SOFT START = 0.1µF
Short Circuit with 3A Load Applied Output Ripple Start into Pre-Biased Output
VIN I 2V/DIV IN 0.5A/DIV V V OUT OUT 0.5V/DIV 5mV/DIV VOUT AC-COUPLED 1V/DIV PRE-BIASED VOUT = 2.5V VIN = 12V 20µs/DIV 4623 G16 VIN = 12V 500ns/DIV 4623 G17 VIN = 12V 500ns/DIV 4623 G18 VOUT = 1.5V VOUT = 5V VOUT = 5V FREQ = 1MHz FREQ = 1MHz FREQ = 1MHz INPUT CAPACITOR = 1 × 22µF CERAMIC CAP INPUT CAPACITOR = 1 × 22µF CERAMIC CAP PRE-BIASED VOUT = 2.5V OUTPUT CAPACITOR = 1 × 47µF CERAMIC CAP OUTPUT CAPACITOR = 1 × 47µF CERAMIC CAP INPUT CAPACITOR = 1 × 22µF CERAMIC CAP OUTPUT CAPACITOR = 1 × 47µF CERAMIC CAP Rev D 6 For more information www.analog.com Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Decoupling Requirements Operation Applications Information Package Description Revision History Package Photos Design Resources Related Parts