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Overview
| Topology | Buck Converter |
| Input voltage | 3-5.5 V |
| Output 1 | 5.5 V / 5 A |
| IC revision | 0.1 |
Description
The LX7219 is a digitally controlled step-down regulator IC with an integrated 22mΩ high-side P-channel MOSFET and a 13mΩ low-side N-channel MOSFET. It features Microsemi’s proprietary constant-frequency hysteretic control engine for near-instantaneous correction to sudden line/load transients. It does not require high-ESR output capacitors and incorporates energy-saving “PSM” (Power Saving or Pulse Skip Mode) at light loads, to extend battery life in mobile applications.The LX7219 has an I2C serial interface port for output voltage margining and monitoring if required (it can operate in default mode too). It includes robust fault monitoring functions.The LX7219 will operate from 2.7V to 5.5V, and is available in several fixed output voltage options from 0.9V to 0.8V (no voltage divider is necessary). Each version’s output voltage can also be made adjustable with use of an external voltage divider.
Features
- Constant Frequency Hysteretic Control
- Extremely Fast Line/Load Transient Response
- I2C for Output Adjustment (3.4Mbps)
- 1.2MHz Switching Frequency
- Extremely Low-RDSON MOSFETS
- Input Voltage Rail 2.6V to 5.5V, Current 6A
- Programmable Power Save Mode for Light-Load Efficiency
- UVLO, OVP, OCP
- 0°C to +85°C Ambient Temperature
- Available in WLCSP-20 (0.4mm pitch)
- RoHS Compliant
Typical applications
- Notebook/ Netbook
- High Performance HDD/Server and Workstations/Video Cards
- PoE Powered Devices
- LCD TV's
More information
Products
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | C | Tol. C | VR (V (DC)) | Size | Operating Temperature | DF (%) | RISO | Ceramic Type | L (mm) | W (mm) | Fl (mm) | L (µH) | IRP,40K (A) | ISAT,10% (A) | ISAT,30% (A) | RDC max. (mΩ) | fres (MHz) | Mount | Endurance (h) | Operating Temperature | IRIPPLE (mA) | RESR (mΩ) | ILeak (µA) | Pitch (mm) | Ø D (mm) | Pins (Value) (pcs) | Rows | H (mm) | Gender | Type | IR (A) | Packaging | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 885012107005 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-CSGP MLCCs 6.3 V(DC) | 22 µF | ±20% | 6.3 | 0805 | -55 °C up to +85 °C | 15 | 0.005 GΩ | X5R Class II | 2 | 1.25 | 0.5 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 1.25 | – | – | – | 7" Tape & Reel | ||
 | 870055674005 | SPEC | 7 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-PTHR Aluminum Polymer Capacitors | 47 µF | ±20% | 35 | – | – | 12 | – | – | 11.5 | – | – | – | – | – | – | – | – | Radial THT | 2000 | -55 °C up to +105 °C | 2890 | 25 | 329 | 3.5 | 8 | – | – | – | – | – | – | Ammopack | ||
 | 744373460033 | 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 | – | – | – | 7030 | -40 °C up to +125 °C | – | – | – | 7.3 | 6.6 | – | 0.33 | 17.8 | 27.1 | 47 | 3.9 | 124 | SMT | – | – | – | – | – | – | – | 2 | – | 2.8 | – | – | – | – | ||
 | 61300311121 | SPEC | – | 6 files | Active i| Production is active. Expected lifetime: >10 years. | WR-PHD 2.54 mm THT Pin Header | – | – | – | – | -40 °C up to +105 °C | – | 1000 MΩ | – | 7.62 | – | – | – | – | – | – | – | – | THT | – | – | – | – | – | 2.54 | – | 3 | Single | – | Pin Header | Straight | 3 | Bag | |
 | 61300411121 | SPEC | – | 6 files | Active i| Production is active. Expected lifetime: >10 years. | WR-PHD 2.54 mm THT Pin Header | – | – | – | – | -40 °C up to +105 °C | – | 1000 MΩ | – | 10.16 | – | – | – | – | – | – | – | – | THT | – | – | – | – | – | 2.54 | – | 4 | Single | – | Pin Header | Straight | 3 | Bag |
| Order Code | Datasheet | Simulation | |
|---|---|---|---|
| 885012107005 | SPEC | |
| 870055674005 | SPEC | |
| 744373460033 | 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. | |
| 61300311121 | SPEC | – |
| 61300411121 | SPEC | – |
| Samples |
|---|
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | C | Tol. C | VR (V (DC)) | Size | Operating Temperature | DF (%) | RISO | Ceramic Type | L (mm) | W (mm) | Fl (mm) | L (µH) | IRP,40K (A) | ISAT,10% (A) | ISAT,30% (A) | RDC max. (mΩ) | fres (MHz) | Mount | Endurance (h) | Operating Temperature | IRIPPLE (mA) | RESR (mΩ) | ILeak (µA) | Pitch (mm) | Ø D (mm) | Pins (Value) (pcs) | Rows | H (mm) | Gender | Type | IR (A) | Packaging | Samples |
|---|