Datasheet LTC3612 (Analog Devices) - 6
| Hersteller | Analog Devices |
| Beschreibung | 3A, 4MHz Monolithic Synchronous Step-Down DC/DC Converter |
| Seiten / Seite | 30 / 6 — Typical perForMance characTerisTics VIN = 3.3V, RT/SYNC = SVIN, unless … |
| Dateiformat / Größe | PDF / 416 Kb |
| Dokumentensprache | Englisch |
Typical perForMance characTerisTics VIN = 3.3V, RT/SYNC = SVIN, unless otherwise noted. Load Step Transient in
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LTC3612
Typical perForMance characTerisTics VIN = 3.3V, RT/SYNC = SVIN, unless otherwise noted. Load Step Transient in Pulse-Skipping Mode Operation Forced Continuous Mode Operation Pulse-Skipping Mode
VOUT V 20mV/DIV OUT VOUT 200mV/DIV 20mV/DIV IL IL 1A/DIV 200mA/DIV IL 500mA/DIV 20µs/DIV 3612 G09 VOUT = 1.8V 1µs/DIV 3612 G10 VOUT = 1.8V 50µs/DIV 3612 G11 VOUT = 1.8V IOUT = 75mA IOUT = 100mA ILOAD = 100mA TO 3A VMODE = 3.3V VMODE = 1.5V VMODE = 3.3V COMPENSATION FIGURE 1
Load Step Transient in Load Step Transient in Forced Load Step Transient in Forced Burst Mode Operation Continuous Mode without AVP Mode Continuous Mode with AVP Mode
VOUT VOUT V 100mV/DIV OUT 200mV/DIV 200mV/DIV IL 1A/DIV IL IL 1A/DIV 1A/DIV 50µs/DIV 3612 G14 VOUT = 1.8V OUT = 1.8V 50µs/DIV 3612 G12 V 50µs/DIV 3612 G13 VOUT = 1.8V ILOAD = 100mA TO 3A I I LOAD = 100mA TO 3A LOAD = 100mA TO 3A VMODE = 1.5V V V MODE = 0V MODE = 1.5V VITH = VIN COMPENSATION FIGURE 1 COMPENSATION FIGURE 1 OUTPUT CAPACITOR VALUE FIGURE 1
Load Step Transient in Forced Continuous Mode Sourcing and Sinking Current Sinking Current
VOUT VOUT 20mV/DIV 200mV/DIV SW 2V/DIV IL 2A/DIV 0A IL 500mA/DIV 50µs/DIV 3612 G15 VOUT = 1.8V 1µs/DIV 3612 G16 VOUT = 1.2V ILOAD = –1.5A TO 3A IOUT = –1A VMODE = 1.5V VMODE = 1.5V COMPENSATION FIGURE 1 3612fc 6 For more information www.linear.com/LTC3612 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Functional Block Diagram Operation Applications Information Package Description Typical Application Related Parts
Typical perForMance characTerisTics VIN = 3.3V, RT/SYNC = SVIN, unless otherwise noted. Load Step Transient in Pulse-Skipping Mode Operation Forced Continuous Mode Operation Pulse-Skipping Mode
VOUT V 20mV/DIV OUT VOUT 200mV/DIV 20mV/DIV IL IL 1A/DIV 200mA/DIV IL 500mA/DIV 20µs/DIV 3612 G09 VOUT = 1.8V 1µs/DIV 3612 G10 VOUT = 1.8V 50µs/DIV 3612 G11 VOUT = 1.8V IOUT = 75mA IOUT = 100mA ILOAD = 100mA TO 3A VMODE = 3.3V VMODE = 1.5V VMODE = 3.3V COMPENSATION FIGURE 1
Load Step Transient in Load Step Transient in Forced Load Step Transient in Forced Burst Mode Operation Continuous Mode without AVP Mode Continuous Mode with AVP Mode
VOUT VOUT V 100mV/DIV OUT 200mV/DIV 200mV/DIV IL 1A/DIV IL IL 1A/DIV 1A/DIV 50µs/DIV 3612 G14 VOUT = 1.8V OUT = 1.8V 50µs/DIV 3612 G12 V 50µs/DIV 3612 G13 VOUT = 1.8V ILOAD = 100mA TO 3A I I LOAD = 100mA TO 3A LOAD = 100mA TO 3A VMODE = 1.5V V V MODE = 0V MODE = 1.5V VITH = VIN COMPENSATION FIGURE 1 COMPENSATION FIGURE 1 OUTPUT CAPACITOR VALUE FIGURE 1
Load Step Transient in Forced Continuous Mode Sourcing and Sinking Current Sinking Current
VOUT VOUT 20mV/DIV 200mV/DIV SW 2V/DIV IL 2A/DIV 0A IL 500mA/DIV 50µs/DIV 3612 G15 VOUT = 1.8V 1µs/DIV 3612 G16 VOUT = 1.2V ILOAD = –1.5A TO 3A IOUT = –1A VMODE = 1.5V VMODE = 1.5V COMPENSATION FIGURE 1 3612fc 6 For more information www.linear.com/LTC3612 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Functional Block Diagram Operation Applications Information Package Description Typical Application Related Parts