CXEP3473是一个3A接收器/源跟踪终端调节器。它专门为低成本/低外部组件计数系统设计。CXEP3473保持高速运算放大器，提供快速的负载瞬态响应，只需要20μF（2×10μF）的陶瓷输出电容。CXEP3473支持遥感功能和根据JEDEC规范为LPDDR2/LPDDR3/DDR iil VTT总线终端供电所需的所有功能。此外，cxep3473还包括集成的睡眠状态控制，将VTT置于S3的High-Z（暂停至RAM）和VTT和vtref置于S5的soft off（关机）。
“支持1.2V LPDDR2/LPDDR3和DDR IIIL（0.675VTT）要求”输入电压范围：3V至5.5V
·VLDOIN电压范围：1.2V至3.6V
只需要20μF陶瓷输出电容
·支持S3中的高Z和S5中的软关闭
·VTT和VTTREF的集成分隔轨道1/2 VDDQ
·遥感（VTTSN）
VTT和VTTREF的±20毫伏精度
·10mA缓冲参考（VTTREF）
内置软启动
·过电流保护
热关机保护
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[ CXEP3473 ]
目录
7.相关产品
产品概述 返回TOP
The CXEP3473 is a 3A sink/source tracking termination regulator. It is specifically designed for low-cost/ low-external component count systems. The CXEP3473 maintains a high speed operational amplifier that provides fast load transient response and only requires 20μF (2×10μF) of ceramic output capacitance. The CXEP3473 supports remote sensing functions and all features required to power the LPDDR2 /LPDDR3 /DDR IIIL VTT bus termination according to the JEDEC specification. In addition, the CXEP3473includes integrated sleep-state controls placing VTT in High-Z in S3 (suspend to RAM) and soft-off for VTT and VTTREF in S5 (Shutdown). The CXEP3473is available in the thermally efficient TDFN2X2-10.
产品特点 返回TOP
„ Support 1.2V LPDDR2/LPDDR3 and DDR IIIL (0.675VTT) Requirements „ Input Voltage Range: 3V to 5.5V
„ VLDOIN Voltage Range: 1.2V to 3.6V
„ Requires Only 20μF Ceramic Output Capacitance
„ Supports High-Z in S3 and Soft-Off in S5
„ Integrated Divider Tracks 1/2 VDDQSNS for Both VTT and VTTREF
„ Remote Sensing (VTTSNS)
„ ±20mV Accuracy for VTT and VTTREF
„ 10mA Buffered Reference (VTTREF)
„ Built-In Soft-Start
„ Over Current Protection
„ Thermal Shutdown Protection
„ TDFN2X2-10 Package
应用范围 返回TOP
„ DDR IIIL Memory Termination
„ LPDDR2/LPDDR3 Memory Termination
„ SSTL−2, SSTL−18
„ HSTL Termination
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DDR Terminator |
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|
Part NO. |
VDDQ (V)min |
VDDQ (V)max |
VCNTL (V) |
Isource (A) |
Isink (A) |
IVREF (mA) |
Isupply (μA) |
Note |
Package |
|
1.2 |
3.6 |
3.3~5.5 |
3 |
3 |
10 |
750 |
DDR3/3L,LPDDR2/3 |
TDFN2X2-10 |
|
|
1.2 |
3.6 |
3~5.5 |
1.8 |
1.8 |
-- |
700 |
DDR1/2/3/3L |
SOP8(FD)/MSOP-8(FD) |
|
|
1.2 |
3.6 |
3.3~5.5 |
3 |
3 |
-- |
750 |
DDR1/2/3/3L |
SOP8(FD) |
|
|
1.2 |
3.6 |
3~5.5 |
2 |
2 |
-- |
1300 |
DDR1/2/3 |
SOT23-5/SOP8/ MSOP8(FD) |
|
|
1.6 |
5.5 |
1.6~5.5 |
1.5 |
1.5 |
0.03 |
280 |
DDR1/2 |
SOP8(FD) |
|
|
1.2 |
3.6 |
3~5.5 |
4~3 |
4~3 |
10 |
800 |
DDR1/2/3/3L |
MSOP10(FD)/MSOP8(FD) |
|
|
1.2 |
3.6 |
3~5.5 |
4~3 |
4~3 |
10 |
900 |
DDR1/2/3/3L |
MSOP8/SOP8(FD) |
|
|
1.2 |
3.6 |
3~5.5 |
4 |
4 |
10 |
900 |
DDR1/2/3 |
SOP8(FD) |
|
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