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參數資料
| 型號： | TPS65810RTQ |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 電源管理 |
| 英文描述： | 9-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC56 |
| 封裝： | 8 X 8 MM, ROHS COMPLIANT, PLASTIC, QFN-56 |
| 文件頁數： | 65/99頁 |
| 文件大小： | 2128K |
| 代理商： | TPS65810RTQ |
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www.ti.com
FUNCTIONAL OVERVIEW
SLVS658B – MARCH 2006 – REVISED FEBRUARY 2007
Table 10. ADC input channel overview
Channel
Connection
Parameter Sampled
Voltage Range Under
Special Features
Full Scale Reading
LSB
Normal Operating
(Internal reference
value
Conditions
selected )
CH1
ANLG1 pin
User defined
Internal pullup current
2.535 V
Full scale
source programmable
reading
CH2
ANLG2 pin
2.535 V
via I2C: 0/ 10/50/60
A
÷ 1023
CH3
ISET1 pin
Voltage proportional to
0 V (charger off) to
—
2.535 V
charge current
2.525 V (fast charge)
CH4
TS pin
Voltage proportional to pack
0 V (short) to 4.7V (no
No internal pullup
2.535 V
temperature
thermistor)
current, use external
pullup resistor to bias
pack thermistor
CH5
Internal
Voltage proportional to IC
1.85 V at TJ = 25°C,
—
2.535 V
junction
junction temperature
–6.5 mV/
°C slope typ
temperature
CH6
RTC_OUT
Internal LDO output voltage
0 V to 3.3 V
—
4.7 V
pin
CH7
OUT pin
System Power bus voltage
0 V to 4.4 V
—
4.7 V
CH8
BAT pin
Battery pack positive
0 V to 4.4 V
—
4.7 V
terminal voltage
The TPS65810 ADC can be subdivided in four sections:
1. Input selection: The input selection section has two major blocks, the input bias control and an 8 channel
MUX. The input bias control provides the bias currents that are applied to pins ANLG1 and ANLG2. The bias
currents for pins ANLG1 and ANLG2 are set on I2C register ADC_WAIT.
The ANLG1 pin current source is automatically enabled when the input power is detected, providing the
required setup to measure a battery ID resistor (ANLG1 pin). ANLG1 and ANLG2 can be used to measure
external resistive loads or analog voltages. The bias current sources are always connected to the OUT pin
internally.
The internal MUX connects one of the monitored analog inputs to the ADC engine, following the selection
defined on register ADC_SET.
2. ADC engine: The ADC engine uses an internal or external voltage reference, as defined by the ADC_REF
bit on the ADC_SET control register. If the internal reference is selected ADC_REF is connected to an
internal LDO that regulates the ADC_REF pin voltage to generate the ADC supply and internal voltage
reference. The internal LDO maximum output current is 6 mA typical, and a conversion should be started
only after the external capacitor is fully charged.
If an external reference is used it should be connected to the ADC_REF pin. When an external reference is
selected the internal LDO connected to ADC_REF is disabled. Care must be taken when selecting an
external reference as the ADC reference voltage, as it affects the ADC LSB absolute value.
3. Trigger control and synchronization: The ADC engine starts a conversion of the selected input when the
trigger control circuit sends a start command. The trigger control circuit starts the ADC conversion and
transfers the ADC output data to the arithmetic logic unit (ALU) at the end of the conversion. It also
synchronizes the data transfer from the ALU to the I2C ADC_READING register at the end of a conversion
cycle, and generates the ADC status information sent to the ADC registers.
An ADC engine conversion is triggered by the TPS65810 trigger control circuit using either an internal trigger
or an external trigger. The internal trigger is automatically generated by the TPS65810 at the end of each
ADC engine conversion, following the timing parameters set on I2C registers ADC_SET, ADC_DELAY and
ADC_WAIT.
The GPIO3 pin can be used as an external trigger if the bit ADC_TRG_GPIO3 is set HI, in the I2C register
ADC_DELAY. In the external trigger mode a new conversion is started after the GPIO3 pin has an edge
transition, following the timing parameters set on I2C registers ADC_SET, ADC_DELAY and ADC_WAIT.
68
Copyright 2006–2007, Texas Instruments Incorporated
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相關代理商/技術參數 |
參數描述 |
|---|---|
| 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 |
| TPS65811RTQR | 功能描述:電池管理 Integr S-C Li-Ion 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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