PM6670AS Complete DDR 2/3 memory power supply controller
The device PM6670AS is a complete DDR2/3 power supply regulator designed to meet JEDEC specifications.
It integrates a Constant On-Time (COT) buck controller, a 2 Apk sink/source Low Drop Out regulator and a 15 mA low noise buffered reference.
The COT architecture assures fast transient response supporting both electrolytic and ceramic output capacitors. An embedded integrator control loop compensates the DC voltage error due to the output ripple.
The 2 Apk sink/source linear regulator provides the memory termination voltage with fast load transient response.
The device is full compliant with system sleep states S3 and S4/S5, providing LDO output high impedance in Suspend-To-RAM and Tracking Discharge of all outputs in Suspend-To-Disk
技术特性
- Switching section (VDDQ)
- 4.5 V to 36 V input voltage range
- 0.9 V, ±1 % voltage reference
- 1.8 V (DDR2) or 1.5 V (DDR3) fixed output voltages
- 0.9 V to 2.6 V adjustable output voltage
- 1.237 V ±1 % reference voltage available
- Very fast load transient response using constant-on-time control loop
- No RSENSE current sensing using low side MOSFETs' RDS(ON)
- Soft-start internally fixed at 3 ms
- Selectable pulse skipping at light load
- selectable No-Audible (33 kHz) pulse skip mode
- Ceramic output capacitors supported
- Output voltage ripple compensation
- VTT LDO and VTTREF
- 2 Apk LDO with foldback for VTT
- Ceramic output capacitors supported
- ±15 mA Low noise buffered reference
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功能框图
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PM6670AS 订购信息
| 订购型号 |
产品状态 |
美金价格 |
数量 |
封装 |
包装形式 |
温度范围 |
材料声明 |
| PM6670ASTR |
Active |
|
1000 |
VFQFPN 24 4x4x1.0 |
Tape And Reel |
|
|
| PM6670AS |
Active |
|
1000 |
VFQFPN 24 4x4x1.0 |
Tube |
|
|
DATASHEET
| 描述 |
版本 |
大小 |
| PM6670AS : Complete DDR2/3 memory power supplies controller |
2 |
746KB |
APPLICATION NOTES
| 描述 |
版本 |
大小 |
| AN2798: Complete DDR2/3 memory power supply controller based on the PM6670AS |
1 |
1586KB |
BOARDS AND TOOLS
| 型号 |
描述 |
| STEVAL-ISA051V2 |
Complete DDR2/3 memory power supply controller evaluation board based on the PM6670AS |
FLYERS
