DC1743A: 3.3V, 5V, 12V @ 8A, 5 ~ 36V in
Summary
Demonstration circuit DC1743A features the LTM®4613EV, an EN55022 class B certified, high input and output voltage, high efficiency, switch mode step-down power µModule® regulator. The input voltage range is from 5V to 36V. The output voltage is jumper programmable from 3.3V to 12V with a rated load current of 8A.
Derating is necessary for certain VIN, VOUT, frequency and thermal conditions: please refer to LTM4613 data sheet for derating curves. Only input and output capacitors are needed externally. The DC1743A offers the TRACK/SS pin allowing the user to program output tracking or soft-start period. Output voltage margining can also be realized through jumper position selections.
Higher efficiency at low load currents is achieved by setting the MODE pin jumper to DCM. The PLL pin is available to synchronize the LTM4613EV to an external clock. The LTM4613 data sheet must be read in conjunction with this demo manual prior to working on or modifying demo circuit DC1743A.
Specifications
| Manufacturer | Analog Devices Inc. |
|---|---|
| Category | AC/DC and DC/DC Conversion |
| Sub-Category | DC/DC SMPS - Single Output |
| Eval Board Part Number | 505-DC1743A-ND |
| Eval Board Supplier | Analog Devices Inc. |
| Eval Board |
Normally In Stock
|
| Topology |
Step Down
|
| Outputs and Type |
1 Non-Isolated
|
| Voltage Out: Factory Set |
3.3 V
5 V 12 V |
| Current Out |
8 A
|
| Voltage In |
5 ~ 36 V
|
| Efficiency @ Conditions |
>94%, 24V in, 12V @ 4 ~ 8 A
>91%, 24V in, 5V @ 4 ~ 8 A >88%, 24V in, 3.3V @ 4 ~ 8 A |
| Voltage Out Range |
3.3 ~ 12 V
|
| Features |
Current Foldback Protection
Internal Inductor Noise Filtering, On-Chip Over Voltage Protection Shutdown, Enable, Standby Soft Start Synchronizable Under Voltage Protection, Brown-Out Voltage Tracking |
| Switching Frequency |
165 kHz
250 kHz 600 kHz |
| Standby Current [Typical] |
50 µA
|
| Quiescent Current [Typical] |
60 mA
|
| Component Count + Extras |
23 + 31
|
| Internal Switch |
Yes
|
| Design Author |
Linear Technology
|
| Application / Target Market |
RF / Wireless
Telecom |
| Standby Current [Maximum] |
- Not Given
|
| Quiescent Current [Maximum] |
- Not Given
|
| Main I.C. Base Part |
LTM4613
|
| Date Created By Author | 2011-02 |
| Date Added To Library | 2013-01 |
