DC1041A-B: 4.5V~28Vin, 12A Step Down Regulator
Summary
Demonstration circuit DC1041A-A features the LTM®4601EV, a 12A high efficiency, high density switch mode step-down converter. The input voltage range is from 4.5V to 28V. The output voltage is jumper selectable for popular voltages from 0.6V to 5V. The PLLIN pin supports synchronizing the μModule® regulator to an external clock.
The TRACK/SS pin allows the user to program output ramp-up and ramp-down rates which may coincidentally or ratiometrically track with another supply’s output if desired. Output voltage margining of ±5% from the nominal value is available via the margin control pins MARG0 and MARG1.
The TRACK/SS pin allows the user to program output ramp-up and ramp-down rates which may coincidentally or ratiometrically track with another supply’s output if desired. Output voltage margining of ±5% from the nominal value is available via the margin control pins MARG0 and MARG1.
Specifications
| Manufacturer | Analog Devices Inc. |
|---|---|
| Category | AC/DC and DC/DC Conversion |
| Sub-Category | DC/DC SMPS - Single Output |
| Eval Board Part Number | DC1041A-B-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 |
0.6 V
1.2 V 1.5 V 1.8 V 3.3 V 5 V |
| Current Out |
12 A
|
| Voltage In |
4.5 ~ 28 V
|
| Efficiency @ Conditions |
>80%, 20V in, 3.3V @ 1.8 ~ 12 A
>80%, 12V in, 3.3V @ 1.5 ~ 12 A >75%, 20V in, 1.2V @ 4.5 ~ 12 A >75%, 12V in, 1.2V @ 1.8 ~ 12 A |
| Voltage Out Range |
0.6 ~ 5 V
|
| Features |
Current Foldback Protection
Current Limit (Adj. or Fixed) Current Sharing Internal Inductor Over Current Protection PFM or PWM Power Good Output Remote Sensing Short Circuit Protection Shutdown, Enable, Standby Soft Start Under Voltage Protection, Brown-Out Voltage Tracking |
| Switching Frequency |
800 kHz
|
| Standby Current [Typical] |
22 µA
|
| Quiescent Current [Typical] |
42 mA
|
| Component Count + Extras |
12 + 45
|
| Internal Switch |
Yes
|
| Design Author |
Linear Technology
|
| Application / Target Market |
Point of Load (PoL)
Servers |
| Standby Current [Maximum] | |
| Quiescent Current [Maximum] | |
| Main I.C. Base Part |
LTM4601HV
|
| Date Created By Author | - Not Given |
| Date Added To Library | 2012-03 |
