the selection of ldo regulator for cell phone design

deep studies are made on ldo which is a key member of power management ic.

LDO作为电源管理IC的重要成员，对其研究也日益深入。

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an internal dynamic frequency compensation circuit of ldo regulator

一种LDO稳压器内部动态频率补偿电路的设计

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a voltage controlled current source for ldo frequency compensation

一种用于低压降稳压器频率补偿的压控电流源

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the performance of ldo circuit is improved with these modules.

通过这些模块的设计，对传统LDO电路进行了改进与优化，改善了传统LDO电路的性能。

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stability is an important issue in the design of ldo linear regulators.

稳定度一直是在设计低压降线性稳压器的过程中一个重要的议题。

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stability analysis and frequency compensation technique for on-chip ldo voltage regulator

片上低压降电源调节器的稳定性分析和频率补偿

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design of constant current ldo driver for power white led

恒流LD O型串联大功率白光LED驱动器的设计

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the design of ldo power management chip with dual electronic switches

带有双电子开关的LDO电源管理芯片的设计

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design and implementation of ldo linear power chip with large current and high stability

大电流、高稳定性LDO线性电源芯片的设计和实现

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the sails have been lowered . a winter forest of masts contains unexpected sights and sounds of spring .

风帆垂落。桅杆，这冬天的树木，带来了意外的春光。

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some key mechanisms are emphasized to support qos such as mpls, rra module, mistake control and so on, and some different mechanisms and policies are discussed provided by stream media qos assurance from diverse technology views in ip net-works, mobile networks and terminal equipments.

通过重点阐述MPLS、RRA模型、差错控制等支持用户QoS的关键技术，从不同的技术角度，探讨了在IP网络、无线移动网络和终端中为流媒体业务提供各种QoS的机制与策略。

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the results showed that the strength of 7055 alloy could be increased slightly after cold rolling and t6 aging at a smaller reduction, then decreased at a heavier rolling reduction, and always reduced with the increase of rolling reduction for the rra temper alloy.

实验结果表明，对于冷变形再T6时效的7055铝合金，随变形量的提高，强度先略有上升，而后缓慢下降。RRA态合金强度随变形量增加而持续下降。

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when the regression temperature was 473 k, in comparison with retrogression at 453 k, the retrogression valley and peak promoted at the retrogression curve, and the hardness peak promoted at the rra curve.

当回归温度为473K时，虽然与在453K回归和再时效行为的趋势相同，但在回归曲线上，硬度的谷值和峰值时间都提前，并且硬度峰值稍微降低；

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the relative rates of absorbing nitrogen ( rra) in all treatments decreased with the development of rice during the whole lifetime, the greater the ratio of bt to total nitrogen applied, the faster their declining speed became.

结果表明：（1）各处理水稻相对吸氮速率随生育进程而降低，其降低速度随氮素基、蘖肥占总施氮量比重增大而加快。

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when the aging treatment is rra treatment ( retrogression and re-ageing): 120 ℃× 22h+ 180 ℃× 30min+ 120 ℃× 22h, the synthetic properties is best.

综合性能最佳的热处理工艺为：120℃×22h+180℃×30min+120℃×22h的回归再时效处理（RRA）。

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when the retrogression temperature was at 453k and 473k, the retrogression curve can be dealt with in three stages and the rra treatment can be simply considered as a two step aging process.

当回归温度为453K和473K时，回归曲线由三部分组成，回归再时效曲线由两部分组成。

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the residual heat removal pump is a main component of rra and is the only nuclear secondary pump which is installed inside the nuclear island except the main pump and which significantly affects whether the reactor can shut-down.

余热排出泵是余热排出系统（RRA）的主要组成部分，是除核主泵之外唯一布置在核岛之内的核二级泵，是关系到核岛能否安全停堆的核心装备。

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the electrical conductivity of cold rolled 7055 alloy decreased with the increase of rolling reduction and increased for t6 and rra temper alloys due to the lattice distortion and coarse precipitates from dislocations.

随变形量的增加，冷轧态7055铝合金的电导率逐渐下降，而T6和RRA态合金的电导率却逐渐上升。在同样变形量条件下，RRA态合金具有最高的电导率。

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t73 and rra treatment improve the grain boundary character, which is help to inhibit hydrogen embrittlement and decrease anodic dissolution rate, then to improve the sccr of the alloy.

T73和RRA时效处理改善了合金晶界特性，有助于阻止氢脆、减缓晶界阳极溶解速度，提高合金的抗应力腐蚀能力。

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serum antipsychotic drug in 50 psychosis cases were measured by radioreceptor assay ( rra) and the values were compared in parallel with that by radioimmunoassay ( ria).

本文采用放射受体分析（RRA）法，检测了50例精神病患者血清中抗精神病药物的浓度，并与氯丙嗪（CPZ）放射免疫分析（RIA）法作了平行对照。

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