Datasheet LTM4614 (Analog Devices) - 5
| Fabricante | Analog Devices |
| Descripción | Dual 4A per Channel Low VIN DC/DC µModule Regulator |
| Páginas / Página | 20 / 5 — Typical perForMance characTerisTics. Start-Up. VFB vs Temperature. … |
| Formato / tamaño de archivo | PDF / 380 Kb |
| Idioma del documento | Inglés |
Typical perForMance characTerisTics. Start-Up. VFB vs Temperature. Short-Circuit Protection. Current Limit Foldback
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LTM4614
Typical perForMance characTerisTics Start-Up Start-Up VFB vs Temperature
806 804 VOUT VOUT 1V/DIV 1V/DIV 802 I I IN IN 1A/DIV (mV) 800 1A/DIV V FB 798 VIN = 5V 200µs/DIV 4614 G10 VIN = 5V 200µs/DIV 4614 G11 796 VOUT = 2.5V VOUT = 2.5V COUT = 100µF COUT = 100µF NO LOAD 4A LOAD 794 (0.01µF SOFT-START CAPACITOR) (0.01µF SOFT-START CAPACITOR) –50 –25 0 25 50 75 100 125 TEMPERATURE (°C) 4614 G12
Short-Circuit Protection Short-Circuit Protection Current Limit Foldback 1.5V Short, No Load 1.5V Short, 4A Load
1.6 1.4 VOUT VOUT 1.2 0.5V/DIV 0.5V/DIV 1.0 (V) IIN IIN 0.8 1A/DIV 1A/DIV V OUT 0.6 0.4 VOUT = 1.5V V 100µs/DIV 4614 G15 IN = 5V 20µs/DIV 4614 G14 0.2 VIN = 3.3V VIN = 2.5V 0 3 4 5 6 7 8 OUTPUT CURRENT (A) 4614 G13
pin FuncTions VIN1, VIN2 (J1-J6, K1-K6); (C1-C6, D1-D6):
Power Input
GND1, GND2, (G1-G12, H1, H7-H12, J7-J8, K7-K8, L1,
Pins. Apply input voltage between these pins and GND
L7-L8, M1-M8); (A1-A12, B1, B7-B12, C7-C8, D7-D8,
pins. Recommend placing input decoupling capacitance
E1, E7-E8, F1-F8):
Power Ground Pins for Both Input directly between VIN pins and GND pins. and Output Returns.
VOUT1, VOUT2 (J9-J12, K9-K12, L9-L12, M9-M12); (C9-C12, TRACK1, TRACK2 (L3, E3):
Output Voltage Tracking Pins.
D9-D12, E9-E12, F9-F12):
Power Output Pins. Apply out- When the module is configured as a master output, then a put load between these pins and GND pins. Recommend soft-start capacitor is placed on the RUN/SS pin to ground placing output decoupling capacitance directly between to control the master ramp rate, or an external ramp can these pins and GND pins. Review Table 4. be applied to the master regulator’s track pin to control it. 4614fb 5 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Simplified Block Diagram Decoupling Requirements Operation Applications Information Package Description Revision History Package Photograph Related Parts
Typical perForMance characTerisTics Start-Up Start-Up VFB vs Temperature
806 804 VOUT VOUT 1V/DIV 1V/DIV 802 I I IN IN 1A/DIV (mV) 800 1A/DIV V FB 798 VIN = 5V 200µs/DIV 4614 G10 VIN = 5V 200µs/DIV 4614 G11 796 VOUT = 2.5V VOUT = 2.5V COUT = 100µF COUT = 100µF NO LOAD 4A LOAD 794 (0.01µF SOFT-START CAPACITOR) (0.01µF SOFT-START CAPACITOR) –50 –25 0 25 50 75 100 125 TEMPERATURE (°C) 4614 G12
Short-Circuit Protection Short-Circuit Protection Current Limit Foldback 1.5V Short, No Load 1.5V Short, 4A Load
1.6 1.4 VOUT VOUT 1.2 0.5V/DIV 0.5V/DIV 1.0 (V) IIN IIN 0.8 1A/DIV 1A/DIV V OUT 0.6 0.4 VOUT = 1.5V V 100µs/DIV 4614 G15 IN = 5V 20µs/DIV 4614 G14 0.2 VIN = 3.3V VIN = 2.5V 0 3 4 5 6 7 8 OUTPUT CURRENT (A) 4614 G13
pin FuncTions VIN1, VIN2 (J1-J6, K1-K6); (C1-C6, D1-D6):
Power Input
GND1, GND2, (G1-G12, H1, H7-H12, J7-J8, K7-K8, L1,
Pins. Apply input voltage between these pins and GND
L7-L8, M1-M8); (A1-A12, B1, B7-B12, C7-C8, D7-D8,
pins. Recommend placing input decoupling capacitance
E1, E7-E8, F1-F8):
Power Ground Pins for Both Input directly between VIN pins and GND pins. and Output Returns.
VOUT1, VOUT2 (J9-J12, K9-K12, L9-L12, M9-M12); (C9-C12, TRACK1, TRACK2 (L3, E3):
Output Voltage Tracking Pins.
D9-D12, E9-E12, F9-F12):
Power Output Pins. Apply out- When the module is configured as a master output, then a put load between these pins and GND pins. Recommend soft-start capacitor is placed on the RUN/SS pin to ground placing output decoupling capacitance directly between to control the master ramp rate, or an external ramp can these pins and GND pins. Review Table 4. be applied to the master regulator’s track pin to control it. 4614fb 5 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Simplified Block Diagram Decoupling Requirements Operation Applications Information Package Description Revision History Package Photograph Related Parts