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Overview
| Topology | Buck Converter |
| Input voltage | 2.25-5.5 V |
| Switching frequency | 1000-3000 kHz |
| Output 1 | 3.3 V / 1 A |
| Output 2 | 1 V / 1 A |
| Output 3 | 1.8 V / 1 A |
| Output 4 | 2.5 V / 1 A |
| Output 5 | 1.2 V / 1 A |
| Output 6 | 2 V / 4 A |
| Output 7 | 1.6 V / 1 A |
| Output 8 | 1.5 V / 1 A |
| Output 9 | 3 V / 1 A |
| Output 10 | 1.2 V / 3 A |
Description
The LTC®3374 is a high efficiency multioutput power supplyIC. The DC/DCs consist of eight synchronous buckconverters (1A each) all powered from independent 2.25Vto 5.5V input supplies.The DC/DCs may be used independently or in parallel toachieve higher currents of up to 4A per output with a sharedinductor. The common buck switching frequency may beprogrammed with an external resistor, synchronized to anexternal oscillator, or set to a default internal 2MHz clock.The operating mode for all DC/DCs may be programmedvia the MODE pin.To reduce input noise the buck converters are phased in90° steps. Precision enable pin thresholds provide reliablepower-up sequencing. The LTC3374 is available in acompact 38-lead 5mm × 7mm QFN package as well as a38-lead TSSOP package.
Features
8-Channel Independent Step-Down DC/DCsMaster-Slave Configurable for Up to 4A per OutputRail with a Single InductorIndependent VIN Supplies for Each DC/DC(2.25V to 5.5V)All DC/DCs Have 0.8V to VIN Output RangePrecision Enable Pin Thresholds for AutonomousSequencing1MHz to 3MHz Programmable/SynchronizableOscillator Frequency (2MHz Default)Die Temperature Monitor OutputThermally-Enhanced 38-Lead QFN (5mm × 7mm)and TSSOP Packages
Typical applications
- Industrial/Automotive/Communications
- General Purpose Multichannel Power Supplies
More information
Products
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | L (nH) | LR (nH) | IR (A) | ISAT,10% (A) | ISAT,30% (A) | RDC (mΩ) | fres (MHz) | Material | IRP,40K (A) | RDC max. (mΩ) | Mount | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 744301025 | SPEC PCN pendingDue to a pending PCN, a modification of the component will be implemented soon. Please find the PCN below. If you have further questions please get in contact with our sales staff. | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WE-HCM SMT High Current Flat Wire Inductor | 250 | 250 | 38 | 54.4 | 64.7 | 0.32 | 33 | MnZn | 56 | 0.343 | SMT | ||
 | 74437346022 | SPEC PCN pendingDue to a pending PCN, a modification of the component will be implemented soon. Please find the PCN below. If you have further questions please get in contact with our sales staff. | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WE-LHMI SMT Power Inductor | 2200 | – | – | 10 | 19.1 | – | 32 | – | 7.7 | 20 | SMT |
| Order Code | Datasheet | Simulation | |
|---|---|---|---|
| 744301025 | SPEC PCN pendingDue to a pending PCN, a modification of the component will be implemented soon. Please find the PCN below. If you have further questions please get in contact with our sales staff. | |
| 74437346022 | SPEC PCN pendingDue to a pending PCN, a modification of the component will be implemented soon. Please find the PCN below. If you have further questions please get in contact with our sales staff. |
| Samples |
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| Order Code | Datasheet | Simulation | Downloads | Status | Product series | L (nH) | LR (nH) | IR (A) | ISAT,10% (A) | ISAT,30% (A) | RDC (mΩ) | fres (MHz) | Material | IRP,40K (A) | RDC max. (mΩ) | Mount | Samples |
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