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参数资料
| 型号： | TPS650250RHBR |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 电源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC32 |
| 封装： | 5 X 5 MM, GREEN, PLASTIC, QFN-32 |
| 文件页数： | 16/31页 |
| 文件大小： | 846K |
| 代理商： | TPS650250RHBR |
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Vdd_alive Output
LDO1 and LDO2
V
OUT + VFBLDOx
R5 ) R6
R6
R5 + R6
V
OUT
V
FBLDOx
* R6
Vcc-Filter
www.ti.com ........................................................................................................................................................................................... SLVS843 – DECEMBER 2008
The Vdd_alive LDO is typically connected to the Vdd_alive input of the Samsung application processor. It
provides an output voltage of 1V at 30mA. It is recommended to add a capacitor of 2.2
F minimum to the
Vdd_alive pin. The LDO can be disabled by pulling the EN_Vdd_alive pin to GND.
The LDOs in the TPS650250 are general purpose LDOs which are stable using ceramics capacitors. The
minimum output capacitor required is 2.2
F. The LDOs output voltage can be changed to different voltages
between 1V and 3.3V using an external resistor divider. Therefore they can also be used as general purpose
LDOs in the application. The supply voltage for the LDOs needs to be connected to the VINLDO pin, giving the
flexibility to connect the lowest voltage available in the system and therefore providing the highest efficiency.
The total resistance (R5+R6) of the voltage divider should be kept in the 1M
range in order to maintain high
efficiency at light load. VFBLDOx= 1.0V.
An RC filter connected at the Vcc input is used to keep noise from the internal supply for the bandgap and other
analog circuitry. A typical value of 1
and 1
F is used to filter the switching spikes, generated by the DC/DC
converters. A larger resistor than 10
should not be used because the current into Vcc of up to 2.5mA causes a
voltage drop at the resistor causing the undervoltage lockout circuitry connected at Vcc internally to switch off too
early.
Copyright 2008, Texas Instruments Incorporated
23
Product Folder Link(s): TPS650250
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| TPS650250RHBT | 功能描述:电池管理 Power Mgmt IC for Li-Ion Pwr Sys RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
| TPS650250RHBT | 制造商:Texas Instruments 功能描述:IC POWER MANAGEMENT QFN-32 制造商:Texas Instruments 功能描述:IC, POWER MANAGEMENT, QFN-32 |
| TPS65030EVM-162 | 功能描述:电源管理IC开发工具 PWR MGMT IC RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| TPS65030YZKR | 功能描述:PMIC 解决方案 Pwr Mng IC w/3 Charge Pumps & 1 LDO RoHS:否 制造商:Texas Instruments 安装风格:SMD/SMT 封装 / 箱体:QFN-24 封装:Reel |
| TPS65030YZKT | 功能描述:PMIC 解决方案 Pwr Mng IC w/3 Charge Pumps & 1 LDO RoHS:否 制造商:Texas Instruments 安装风格:SMD/SMT 封装 / 箱体:QFN-24 封装:Reel |
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