主页 电源管理 直流/直流开关稳压器 升压稳压器 升压转换器(集成开关)

具有 3.3V 200mA LDO 的 3.6V 95% 效率升压转换器,用于单节/双节锂离子电池应用领域

TPS61122 处于停产状态
请考虑从这些替代产品中选择一款:
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功能与比较器件相似
TPS61023 正在供货 具有 0.5V 超低输入电压的 3.7A 升压转换器 Replacement
TPS610981 正在供货 具有集成 LDO 的低输入电压、3.3V 输出电压、同步升压转换器 For applications requiring ultra-low Iq or smaller package.

产品详情

Topology Boost Vin (min) (V) 1.8 Vin (max) (V) 5.5 Vout (min) (V) 3.6 Vout (max) (V) 3.6 Switch current limit (typ) (A) 1.6 Type Converter Regulated outputs (#) 2 Switching frequency (min) (kHz) 400 Switching frequency (max) (kHz) 600 Iq (typ) (mA) 0.04 Features Enable, Light Load Efficiency, Load Disconnect, Power good, Synchronous Rectification Duty cycle (max) (%) 100 Operating temperature range (°C) -40 to 125 Rating Catalog
Topology Boost Vin (min) (V) 1.8 Vin (max) (V) 5.5 Vout (min) (V) 3.6 Vout (max) (V) 3.6 Switch current limit (typ) (A) 1.6 Type Converter Regulated outputs (#) 2 Switching frequency (min) (kHz) 400 Switching frequency (max) (kHz) 600 Iq (typ) (mA) 0.04 Features Enable, Light Load Efficiency, Load Disconnect, Power good, Synchronous Rectification Duty cycle (max) (%) 100 Operating temperature range (°C) -40 to 125 Rating Catalog
TSSOP (PW) 16 32 mm² 5 x 6.4
  • Synchronous, 95% Efficient, Boost Converter With
    500-mA Output Current From 1.8-V Input
  • Integrated 200-mA Reverse Voltage Protected
    LDO for DC-DC Output Voltage Post Regulation
    or Second Output Voltage
  • 40-µA (Typical) Total Device Quiescent Current
  • Input Voltage Range: 1.8 V to 5.5 V
  • Fixed and Adjustable Output Voltage Options up
    to 5.5 V
  • Power Save Mode for Improved Efficiency at Low
    Output Power
  • Low Battery Comparator
  • Power Good Output
  • Low EMI-Converter (Integrated Antiringing Switch)
  • Load Disconnect During Shutdown
  • Overtemperature Protection
  • Available in a Small 4-mm × 4-mm VQFN-16 or in
    a TSSOP-16 Package
  • Synchronous, 95% Efficient, Boost Converter With
    500-mA Output Current From 1.8-V Input
  • Integrated 200-mA Reverse Voltage Protected
    LDO for DC-DC Output Voltage Post Regulation
    or Second Output Voltage
  • 40-µA (Typical) Total Device Quiescent Current
  • Input Voltage Range: 1.8 V to 5.5 V
  • Fixed and Adjustable Output Voltage Options up
    to 5.5 V
  • Power Save Mode for Improved Efficiency at Low
    Output Power
  • Low Battery Comparator
  • Power Good Output
  • Low EMI-Converter (Integrated Antiringing Switch)
  • Load Disconnect During Shutdown
  • Overtemperature Protection
  • Available in a Small 4-mm × 4-mm VQFN-16 or in
    a TSSOP-16 Package

The TPS6112x devices provide a complete power supply solution for products powered by either a one-cell Li-Ion or Li-Polymer by either a one-cell Li-Ion or Li-Polymer battery, or a two- to four-cell Alkaline, NiCd, or NiMH battery. The devices can generate two stable output voltages that are either adjusted by an external resistor divider or are fixed internally on the chip. The device also provides a simple solution for generating 3.3 V out of a one-cell Li-Ion or Li-Polymer battery at a maximum output current of at least 200 mA with supply voltages down to 1.8 V. The implemented boost converter is based on a fixed frequency, pulse-width-modulation (PWM) controller using a synchronous rectifier to obtain maximum efficiency. The maximum peak current in the boost switch is limited to a value of 1600 mA.

The converter can be disabled to minimize battery drain. During shutdown, the load is completely disconnected from the battery. A low-EMI mode is implemented to reduce ringing and, in effect, lower radiated electromagnetic energy when the converter enters discontinuous conduction mode. A power good output at the boost stage simplifies control of any connected circuits like cascaded power supply stages or microprocessors.

The built-in LDO can be used for a second output voltage derived either from the boost output or directly from the battery. The LDO can be enabled separately that is, using the power good of the boost stage. The device is packaged in a 16-pin VQFN (RSA) package measuring 4 mm × 4 mm or in a 16-pin TSSOP (PW) package.

The TPS6112x devices provide a complete power supply solution for products powered by either a one-cell Li-Ion or Li-Polymer by either a one-cell Li-Ion or Li-Polymer battery, or a two- to four-cell Alkaline, NiCd, or NiMH battery. The devices can generate two stable output voltages that are either adjusted by an external resistor divider or are fixed internally on the chip. The device also provides a simple solution for generating 3.3 V out of a one-cell Li-Ion or Li-Polymer battery at a maximum output current of at least 200 mA with supply voltages down to 1.8 V. The implemented boost converter is based on a fixed frequency, pulse-width-modulation (PWM) controller using a synchronous rectifier to obtain maximum efficiency. The maximum peak current in the boost switch is limited to a value of 1600 mA.

The converter can be disabled to minimize battery drain. During shutdown, the load is completely disconnected from the battery. A low-EMI mode is implemented to reduce ringing and, in effect, lower radiated electromagnetic energy when the converter enters discontinuous conduction mode. A power good output at the boost stage simplifies control of any connected circuits like cascaded power supply stages or microprocessors.

The built-in LDO can be used for a second output voltage derived either from the boost output or directly from the battery. The LDO can be enabled separately that is, using the power good of the boost stage. The device is packaged in a 16-pin VQFN (RSA) package measuring 4 mm × 4 mm or in a 16-pin TSSOP (PW) package.

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类型 标题 下载最新的英语版本 日期
* 数据表 TPS6112x Synchronous Boost Converter With 1.1-A Switch and Integrated LDO 数据表 (Rev. D) PDF | HTML 2015年 5月 28日
应用手册 Basic Calculation of a Boost Converter's Power Stage... (Rev. D) PDF | HTML 2022年 11月 21日
应用手册 升压转换器功率级的基本计算 (Rev. D) PDF | HTML 英语版 (Rev.D) PDF | HTML 2022年 11月 11日
应用手册 LDO 噪声揭秘 (Rev. B) PDF | HTML 英语版 (Rev.B) PDF | HTML 2020年 9月 16日
应用手册 Performing Accurate PFM Mode Efficiency Measurements (Rev. A) 2018年 12月 11日
选择指南 电源管理指南 2018 (Rev. K) 2018年 7月 31日
选择指南 电源管理指南 2018 (Rev. R) 2018年 6月 25日
应用手册 Optimizing Transient Response of Internally Compensated DC-DC Converters (Rev. B) 2017年 11月 29日
应用手册 LDO PSRR Measurement Simplified (Rev. A) PDF | HTML 2017年 8月 9日
应用手册 Extending the Soft Start Time Without a Soft Start Pin (Rev. B) 2017年 6月 15日
应用手册 Choosing an Appropriate Pull-up/Pull-down Resistor for Open Drain Outputs 2011年 9月 19日
模拟设计期刊 IQ:它是什么、不是什么以及如何使用 英语版 2011年 8月 17日
应用手册 简化的 LDO PSRR 测量 最新英语版本 (Rev.A) PDF | HTML 2010年 7月 28日
应用手册 优化具有内部补偿功能的 DC-DC 转换器的瞬态响应 最新英语版本 (Rev.B) 2008年 7月 15日
应用手册 最小化升压转换器开关节点处的振铃 英语版 2008年 7月 15日
EVM 用户指南 TPS6112xEVM-205, For Dual Output, Single-Cell Boost Converter User's Guide (Rev. A) 2008年 6月 2日

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TPS61120EVM-205 — TPS61120 评估模块

The TPS61120EVM-205 is an evaluation tool for the TPS61120 inductive boost converter with LDO in 4x4mm2 QFN. The boost stage can supply voltages up to 5.5V from input voltages in the range of 1.8V to 5.5V. The LDO stage can supply voltages down to 0.9V from input voltages in the range of 1.5V to (...)

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订购和质量

包含信息:
  • RoHS
  • REACH
  • 器件标识
  • 引脚镀层/焊球材料
  • MSL 等级/回流焊峰值温度
  • MTBF/时基故障估算
  • 材料成分
  • 鉴定摘要
  • 持续可靠性监测
包含信息:
  • 制造厂地点
  • 封装厂地点

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