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参数资料
| 型号： | TPS650243RHBR |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 电源管理 |
| 英文描述： | 2-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC32 |
| 封装： | 5 X 5 MM, GREEN, PLASTIC, QFN-32 |
| 文件页数： | 9/35页 |
| 文件大小： | 955K |
| 代理商： | TPS650243RHBR |
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ENABLE
LDO1
LDO2
DETAILED DESCRIPTION
STEP-DOWN CONVERTERS, VDCDC1, VDCDC2 AND VDCDC3
www.ti.com .............................................................................................................................................................. SLVS774B – JUNE 2007 – REVISED JULY 2009
STARTUP LDO1 AND LDO2
Figure 17.
The TPS65024x incorporate three synchronous step-down converters operating typically at 2.25MHz fixed
frequency PWM (Pulse Width Modulation) at moderate to heavy load currents. At light load currents the
converters automatically enter Power Save Mode and operate with PFM (Pulse Frequency Modulation).
VDCDC1 delivers up to 1.6A, VDCDC2 is capable of delivering up to 1.0A of output current while the VDCDC3
converter is capable of delivering up to 800mA.
The converter output voltages can be programmed via the DEFDCDC1, DEFDCDC2 and DEFDCDC3 pins. The
pins can either be connected to GND, VCC or to a resistor divider between the output voltage and GND. The
VDCDC1 converter defaults to 2.80V or 3.3V depending on the DEFDCDC1 configuration pin, if DEFDCDC1 is
tied to ground the default is 2.80V, if it is tied to VCC the default is 3.3V. When the DEFDCDC1 pin is connected
to a resistor divider, the output voltage can be set in the range of 0.6V to VINDCDC1 V. Reference the section
on Output Voltage Selection for details on setting the output voltage range.
The VDCDC2 converter defaults to 1.8V or 2.5V depending on the DEFDCDC2 configuration pin, if DEFDCDC2
is tied to ground the default is 1.8V, if it is tied to VCC the default is 2.5V. When the DEFDCDC2 pin is
connected to a resistor divider, the output voltage can be set in the range of 0.6V to VINDCDC2 V.
The VDCDC3 converter defaults to 1.0V or 1.3V for the TPS650240 depending on the DEFDCDC3 configuration
pin, if DEFDCDC3 is tied to ground the default is 1.0V, if it is tied to VCC the default is 1.3V. The DEFDCDC3
pin cannot be connected to a resistor divider. In opposition to DEFDCDC1 and DEFDCDC2, the DEFDCDC3 pin
can be used to change the core voltage during operation by changing its logic level from HIGH to LOW or vice
versa. TPS650241 to TPS650245 allow different voltages for the VDCDC3 converter. Reference Table 4 for the
TPS650240, TPS650241, TPS650242, TPS650243, TPS650244 and TPS650245 default voltage options.
Copyright 2007–2009, Texas Instruments Incorporated
17
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| TPS650240RHBT | 2-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC32 |
| TPS650244RHBR | 2-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC32 |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TPS650243RHBRG4 | 功能描述:电池管理 Pwr Mgmt ICs for Li Ion Pwred Systems 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 |
| TPS650243RHBT | 功能描述:电池管理 Pwr Mgmt ICs for Li-Ion Pwred Systems 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 |
| TPS650243RHBT | 制造商:Texas Instruments 功能描述:3 Buck and 3 LDO - 制造商:Texas Instruments 功能描述:IC, POWER MANAGEMENT, QFN-32 |
| TPS650243RHBTG4 | 功能描述:电池管理 Pwr Mgmt ICs for Li Ion Pwred Systems 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 |
| TPS650244IRHBRQ1 | 功能描述:电池管理 AC 6Ch Pwr Mgmt Unit 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 |
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