LP2995 DDR Termination Regulator
| LP2967 | Dual 150Ma Ldo |
| LP2992 | 250Ma Output Current |
| LP38691 | Improved Output Current, Smaller Caps |
| LP38693 | Improved Output Current , Enable Pin |
| LP2983 | 0.9V, 1.0V And 1.2V Output Options |
| LP2995LV | For Output Voltages Between 1.5V And 2.0V |
| LP3985 | Lower Dropout Cmos Version |
LP2995 特性Features
- Low output voltage offset
- Works with +5v, +3.3v and 2.5v rails
- Source and sink current
- Low external component count
- No external resistors required
- Linear topology
- Available in SO-8, PSOP-8 or LLP-16 packages
- Low cost and easy to use
LP2995 概述Description
The LP2995 linear regulator is designed to meet the JEDEC SSTL-2 and SSTL-3 specifications for termination of DDR-SDRAM. The device contains a high-speed operational amplifier to provide excellent response to load transients. The output stage prevents shoot through while delivering 1.5A continuous current and transient peaks up to 3A in the application as required for DDR-SDRAM termination. The LP2995 also incorporates a VSENSE pin to provide superior load regulation and a VREF output as a reference for the chipset and DDR DIMMS.
LP2995 应用Applications
- DDR Termination Voltage
- SSTL-2
- SSTL-3
LP2995 功能框图Block Diagram |
LP2995 功能框图Block Diagram |
LP2995 典型性能Typical Performance |
|---|
LP2995 性能参数Parametrics
| Paramaters / Values | LP2995 | LM2744 | LP2996 |
|---|---|---|---|
| Input Min Voltage | 2.2 Volt | 1 Volt | 1.5 Volt |
| Input Max Voltage | 5 Volt | 16 Volt | 5.5 Volt |
| Output Current | 1500 mA | 20000 mA | 1500 mA |
| Standards | DDR | DDR2, DDR | DDR2, DDR |
| External Components | 3 | 23 | 4 |
| Independent Power/Analog Rails | No | Yes | No |
| On/Off Pin | No | Yes | Yes |
| Reference Output | 1.25 Volt | 1.25 Volt | |
| Thermal Protection | No | No | Yes |
| PowerGood / Error Flag | No | Yes | No |
| Quiescent Current | 0.25 mA | 1.5 mA | 0.32 mA |
| RegType | LDO | Switching Controller | LDO |
| Temperature Min | 0 deg C | -40 deg C | 0 deg C |
| Temperature Max | 125 deg C | 125 deg C | 125 deg C |
LP2995 芯片订购型号Order
| Part Number(s) (NSID) | Top View | Availability | Budgetary Pricing | Pack Size |
|---|---|---|---|---|
| LP2995LQ/NOPB LP2995LQ |
LLP | Full production Lead Time: 8 weeks | $0.56 each at 1K+ pcs | reel
of
1000
 |
| LP2995M/NOPB LP2995M |
SOIC NARROW |
Full production Lead Time: 8 weeks | $0.56 each at 1K+ pcs | rail
of
95
 |
| LP2995MR/NOPB LP2995MR |
PSOP |
Full production Lead Time: 8 weeks | $0.56 each at 1K+ pcs | rail
of
95
|
| LP2995MRX/NOPB LP2995MRX |
PSOP |
Full production Lead Time: 8 weeks | $0.56 each at 1K+ pcs | reel
of
2500
|
| LP2995MX/NOPB LP2995MX |
SOIC NARROW |
Full production Lead Time: 6 weeks | $0.56 each at 1K+ pcs | reel
of
2500
|
LP2995 开发工具LP2995EVAL
| Part Number(s) (NSID) | Description | Availability | Budgetary Pricing | Pack Size |
|---|---|---|---|---|
| LP2995LQEVAL | DDR Termination Regulator | Full production | $10.50 each | 1 |
| LP2995M-EVAL | DDR Termination Regulator | Full production | $10.50 each | 1 |
LP2995 停产Obsolete Versions
| Obsolete Part | Alternate Part or Supplier | Source | Last Time Buy Date |
|---|---|---|---|
| LP2995LQX | LP2995MR | NATIONAL SEMICONDUCTOR | 01 Dec 2009 |