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參數(shù)資料
| 型號： | TPS65800RTQTG4 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 電源管理 |
| 英文描述： | 8-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC56 |
| 封裝： | 8 X 8 MM, GREEN, PLASTIC, QFN-56 |
| 文件頁數(shù)： | 30/98頁 |
| 文件大小： | 2077K |
| 代理商： | TPS65800RTQTG4 |
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V(OUT) + V(LOW_SYS)
1 )
R6
R1
:
where R6 and R1 are external resistors, V
(LOW_SYS)
+ 1 V typical
(1)
SLVS606C – SEPTEMBER 2005 – REVISED FEBRUARY 2007
Table 3. Integrated Supply and Drivers Power-Up Defaults
SUPPLY
POWER-UP DEFAULT
OTHER BLOCKS
POWER-UP DEFAULT
LDO0
OFF, 3.3 V
POWER PATH
INPUT TO SYSTEM
LDO1
2.85V, ON
PWM
OFF
LDO2
3.3 V, ON
PWM_LED
OFF
LDO3
1.25 V, ON
GPIO1
INPUT
LDO4
2.75 V, ON
GPIO2
INPUT
LD05
2.81 V, ON
GPIO3
INPUT
SIM
1.8 V, OFF
ADC
OFF
RTC_OUT
ON, 3.1 V
SM3 (WHITE LED)
OFF
LDO_PM
3.3 V, ON @ OUT POWERED
RGB DRIVER
OFF
SM1
ON, 1.24 V
INTERRUPT MASK
NONE MASKED
SM2
ON, 1.8 V
POWER GOOD MASK
ALL MASKED
CHARGER
ON
After the internal I2C register power-up defaults are loaded the power path control logic is enabled, connecting
the external power source to the OUT pin. A status flag (nRAMLOAD) is set to LO in the SOFT_RESET register,
indicating that the I2C registers were loaded with the power-up defaults, and the TPS65800 enters the ENABLE
mode.
ENABLE: In the ENABLE mode the RESPWRON output is set to the LO level, the INT pin mode is set to high
impedance and all the power good comparators that monitor the integrated supply outputs are disabled. The
ENABLE mode is used by the TPS65800 to detect when the main system power rail (OUT pin) is powered and
ready to be used on the internal supply power-up. The OUT pin voltage is sensed by an internal low system
voltage comparator, which holds the IC in the ENABLE mode until the system power bus voltage (OUT pin) has
reached a minimum operating voltage, defined by the user. The internal comparator senses the system voltage
at pin SYS_IN, and the threshold for the minimum system operating voltage at the OUT pin is set by the external
divider connected from OUT pin to SYS_IN pin. The threshold voltage is calculated as follows:
The minimum system operating voltage should always be set above the internal UVLO threshold VUVLO. In
normal application conditions the minimum system operating voltage is usually set to a value that assures that
the TPS65800 integrated regulators are not operating in the dropout region.
When the voltage at the SYS_IN pin exceeds the internal threshold V(LOW_SYS) the TPS65800 is ready to start
the system power sequencing, and the SEQUENCING mode is entered.
SEQUENCING– The sequencing state starts immediately after the enable state. In this mode of operation the
integrated supplies are turned ON, according to the sequencing steps loaded from the internal non-volatile
memory during the power-up phase. The TPS65800 sequencing timing diagram shown in figure details the
internal timing delays and supply sequencing. At the end of the sequencing state the user-programmable reset
timer is started, and the TPS65800 enters the reset state.
36
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相關代理商/技術參數(shù) |
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|---|---|
| TPS65810EVM | 功能描述:電源管理IC開發(fā)工具 TPS65810 Eval Mod RoHS:否 制造商:Maxim Integrated 產品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| TPS65810RTQR | 功能描述:電池管理 Int Sgl-Cell Lit-Ion Batt & Pwr Mgmt IC RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
| TPS65810RTQRG4 | 功能描述:電池管理 Int Sgl-Cell Lit-Ion Batt & Pwr Mgmt IC RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
| TPS65810RTQT | 功能描述:電池管理 Int Sgl-Cell Lit-Ion Batt & Pwr Mgmt IC RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
| TPS65810RTQTG4 | 功能描述:電池管理 Int Sgl-Cell Lit-Ion Batt & Pwr Mgmt IC RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
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