- 制造厂商：TI
- 产品类别：电源管理
- 技术类目：直流/直流开关稳压器 - 降压稳压器
- 功能描述：具有低待机电流消耗和 Out-of-Audio 的 4.5V 至 28V 双通道同步降压控制器
- 点击这里打开及下载TPS51123的技术文档资料
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The TPS51123 is a cost effective, dual-synchronous buck controller targeted for notebook system power supply solutions. It provides 5-V and 3.3-V LDOs and requires few external components. The TPS51123 supports high efficiency, fast transient responses and provides a combined power-good signal. Out-of-Audio mode light-load operation enables low acoustic noise at much higher efficiency than conventional forced PWM operation. Adaptive on-time D-CAP control provides convenient and efficient operation. The part operates with supply input voltages ranging from 5.5 V to 28 V and supports output voltages from 2 V to 5.5 V. The TPS51123 is available in a 24-pin QFN package and is specified from -40°C to 85°C ambient temperature range.
- Wide-Input Voltage Range: 5.5 V to 28 V
- Output Voltage Range: 2 V to 5.5 V
- Built-in 100-mA 5-V/3.3-V LDO with Switches
- Built-in 1% 2-V Reference Output
- With/Without Out-of-Audio? Mode Selectable Light-Load and PWM only Operation
- Internal 1.6-ms Voltage Servo Softstart
- Adaptive On-Time Control Architecture with Four Selectable Frequency Setting
- 4500 ppm/°C RDS(on) Current Sensing
- Built-In Output Discharge
- Power Good Output
- Built-in OVP/UVP/OCP
- Thermal Shutdown (Non-latch)
- 24-Pin QFN (RGE) Package
- Vin (Min) (V)
- 5.5
- Vin (Max) (V)
- 28
- Vout (Min) (V)
- 2
- Vout (Max) (V)
- 5.5
- Iout (Max) (A)
- 20
- Iq (Typ) (uA)
- 550
- Switching frequency (Min) (kHz)
- 200
- Switching frequency (Max) (kHz)
- 460
- Features
- Enable, Light Load Efficiency, Power Good, Synchronous Rectification
- Regulated outputs (#)
- 2
- Number of phases
- 1
- Rating
- Catalog
TPS51123的完整型号有：TPS51123RGER、TPS51123RGET，以下是这些产品的关键参数及官网采购报价：
TPS51123RGER，工作温度：-40 to 85，封装：VQFN (RGE)-24，包装数量MPQ：3000个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网TPS51123RGER的批量USD价格：1.888（1000+）
TPS51123RGET，工作温度：-40 to 85，封装：VQFN (RGE)-24，包装数量MPQ：250个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网TPS51123RGET的批量USD价格：2.266（1000+）
TPS51123 Unencrypted PSpice Transient Model Package (Rev. A)
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