Texas Instruments
开关控制器
1 Output
1.8 V to 28 V
0.75 V to 5.5 V
10 A
SMD/SMT
TSSOP-14
Tube
- 40 C to + 85 C
企业名:深圳市中立信电子科技有限公司
类型:贸易/代理/分销
电话:
0755-23956688
0755-23956688
手机:13410226883
联系人:叶先生/王先生
邮箱:sales@zlxele.com
地址:广东深圳深圳市福田区彩田路彩虹新都大厦彩荟阁7A室
1 Features 3 Description
The TPS51117 device is a cost-effective,
1• High Efficiency, Low Power Consumption, 4.5-μA
synchronous buck controller for POL voltage Typical Shutdown Current regulation in notebook PC applications. The controller
• Fixed Frequency Emulated On-Time Control, is dedicated for the operation of the Adaptive OnAdjustable
from 100 kHz to 550 kHz Time D-CAP mode. This mode provides ease-of-use,
• D-CAP™ Mode With 100-ns Load Step Response low external component count, and fast transient
response. Auto-skip mode for high efficiency down to • < 1% Initial Reference Accuracy
the milliampere load range, or PWM-only mode for
• Output Voltage Range: 0.75 V to 5.5 V low-noise operation is selectable.
• Wide Input Voltage Range: 1.8 V to 28 V
The current-sensing scheme for positive overcurrent
• Selectable Auto-Skip/PWM-Only Operation and negative overcurrent protection is loss-less low•
Temperature Compensated (4500 ppm/°C) side RDS(on) sensing plus temperature compensation.
Low-Side RDS(on) Overcurrent Sensing The device receives a 5-V (4.5 V to
5.5 V) supply from another regulator such as the • Negative Overcurrent Limit
TPS51120 or TPS51020. The conversion input can
• Integrated Boost Diode be either VBAT or a 5-V rail, ranging from 1.8 V to
• Integrated OVP/UVP and Thermal Shutdown 28 V, and the output voltage range is from 0.75 V to
5.5 V. • Powergood Signal
• Internal 1.2-ms Voltage Soft-Start The TPS51117 is available in a 14-pin VQFN or a 14-
pin TSSOP package and is specified from –40°C to • Integrated Output Discharge (Soft-Stop)
85°C.
TPS51117PWTPS51117PWTPS51117PWTPS51117PW
1特征3描述
TPS51117是一款性价比高的设备,
1•效率高,低功耗,4.5 -μa
在笔记本电脑应用中,同步buck控制器用于POL电压典型的关机电流调节。控制器
•固定频率实时仿真控制,专用于自适应OnAdjustable操作
从100千赫到550千赫时间D-CAP模式。这种模式提供了易用性,
•D-CAP™模式与100 - ns负载阶跃响应外部组件计数低,和快速瞬态
响应。自动跳跃模式,高效率下降到•< 1%的初始参考精度
用于毫安负载范围,或PWM-only模式
输出电压范围:0.75 V ~ 5.5 V低噪声操作可选。
•宽输入电压范围:1.8 V至28 V
正过电流电流传感方案
•可选择的自动跳跃/ pwm操作和负过流保护低损耗
温度补偿(4500 ppm /°C)一边RDS(上)传感+温度补偿。
低侧RDS(on)过流传感装置接收5-V (4.5 V to)
5.5 V)来自另一个调节器的供应,如•负过流限制
TPS51120或TPS51020。转换输入可以
•集成升压二极管要么是VBAT要么是5-V导轨,从1.8 V到1.8 V不等
•集成OVP/UVP和热停机28v,输出电压范围为0.75 V ~
5.5 V.•Powergood信号
•内部1.2 ms电压软启动TPS51117可在14引脚VQFN或14-
销TSSOP包和指定从-40°C•综合输出放电(Soft-Stop)
85°C。
企业名:深圳市中立信电子科技有限公司
类型:贸易/代理/分销
电话:
0755-23956688
0755-23956688
手机:13410226883
联系人:叶先生/王先生
邮箱:sales@zlxele.com
地址:广东深圳深圳市福田区彩田路彩虹新都大厦彩荟阁7A室