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参数资料
| 型号： | TPS65023RSBT |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 电源管理 |
| 英文描述： | 3-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC40 |
| 封装： | 5 X 5 MM, GREEN, PLASTIC, QFN-40 |
| 文件页数： | 35/53页 |
| 文件大小： | 1274K |
| 代理商： | TPS65023RSBT |
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t
=2
(reset)
x128x
(1V-0.25V)xC
(reset)
2
A
m
()
SLVS670I – JUNE 2006 – REVISED JULY 2010
www.ti.com
VRTC Output
It is recommended that a 4.7-mF (minimum) capacitor be added to the VRTC pin.
LDO1 and LDO2
The LDOs in the TPS65023, TPS65023B are general-purpose LDOs which are stable using ceramics capacitors.
The minimum output capacitor required is 2.2 mF. The LDOs output voltage can be changed to different voltages
between 1 V and 3.3 V using the I2C interface. Therefore, they can also be used as general-purpose LDOs in
applications powering processors different from DaVinci. 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 provides the
highest efficiency.
TRESPWRON
This is the input to a capacitor that defines the reset delay time after the voltage at VRTC rises above 2.52 V.
The timing is generated by charging and discharging the capacitor with a current of 2 mA between a threshold of
0.25 V and 1 V for 128 cycles. A 1-nF capacitor gives a delay time of 100 ms.
(9)
Where:
t(reset) is the reset delay time
C(reset) is the capacitor connected to the TRESPWRON pin
VCC-Filter
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 R and 1 mF is used to filter the switching spikes, generated by the dc-dc
converters. A larger resistor than 10 R should not be used because the current into VCC of up to 3 mA causes a
voltage drop at the resistor causing the undervoltage lockout circuitry connected at VCC internally to switch off
too early.
40
Copyright 2006–2010, Texas Instruments Incorporated
Product Folder Link(s) : TPS65023, TPS65023B
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相关代理商/技术参数 |
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|---|---|
| TPS65023RSBT | 制造商:Texas Instruments 功能描述:Power Management IC |
| TPS65023RSBTG4 | 功能描述:电池管理 6-Channel Power Management IC 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 |
| TPS650240EVM-331 | 功能描述:电源管理IC开发工具 TPS650240EVM331 Eval Mod 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 |
| TPS650240RHBR | 功能描述:电池管理 Pwr Mgmt ICs for Li-Ion Powered 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 |
| TPS650240RHBRG4 | 功能描述:电池管理 Pwr Mgmt ICs 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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