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| 型号： | TPS65181RGZR |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 电源管理 |
| 英文描述： | POWER SUPPLY MANAGEMENT CKT, PQCC48 |
| 封装： | 7 X 7 MM, 0.90 MM HEIGHT, GREEN, PLASTIC, VQFN-48 |
| 文件页数： | 9/41页 |
| 文件大小： | 892K |
| 代理商： | TPS65181RGZR |
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43 kW
10 kW NTC
7.307 kW
2.25V
10
10 bit ADC
Digital
TPS6518x
SLVSA76F
– MARCH 2010 – REVISED FEBRUARY 2011
Table 1. ADC Output Value vs Termperature
TEMPERATURE
TMST_VALUE[7:0]
< -10°C
1111 0110
-10
°C
1111 0110
-9
°C
1111 0111
...
-2
°C
1111 1110
-1
°C
1111 1111
0
°C
0000 0000
1
°C
0000 0001
2
°C
0000 0010
...
25
°C
0001 1001
...
85
°C
0101 0101
> 85°C
0101 0101
Figure 5. NTC Bias and Measurement Circuit
TPS65180/TPS65180B TEMPERATURE ACQUISITION
The TPS65180/TPS65180B requires the host to trigger the temperature acquisition before reading the
temperature value from register TMST_VALUE. A standard temperature measurement involves the following
steps:
1. The host sets the READ_THERM bit of the TMST_CONFIG register to 1. This enabled the NTC bias circuit
and internal ADC.
2. The analog to digital conversion is automatically started after a fixed 250-
s delay. While the conversion is in
progress the CONV_END bit of the TMST_CONFIG register is held low and returns to 1 after the conversion
result is available.
3. After the conversion is complete the READ_THERM bit is automatically reset, the EOC bit of the
INT_STATUS2 register is set, and the interrupt pin (nINT) is pulled low.
4. The host services the interrupt by reading the INT_STATUS2 register. This clears the interrupt pin (nINT pin
returns high). The host sees the EOC bit set and knows that the temperature data is available in the
TMST_VALUE register.
5. The host reads the temperature data from the TMST_VALUE register.
TPS65181/TPS65181B TEMPERATURE ACQUISITION
The TPS65181/TPS65181B triggers temperature acquisition once every 60s to reduce the number of required
I2C writes. The host or display timing controller can read the temperature at any time by accessing the
TMST_VALUE register without having to set the READ_THERM bit first. However, the host can always trigger an
2010–2011, Texas Instruments Incorporated
17
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| TPS65181RGZT | 功能描述:LCD Gamma缓冲器 Pwr Mgmt IC for Elec Paper Display RoHS:否 制造商:Maxim Integrated 输入补偿电压: 转换速度: 电源电压-最大:20 V 电源电压-最小:9 V 电源电流: 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:TQFN-38 封装:Tube |
| TPS65182BRGZR | 功能描述:LCD Gamma缓冲器 PMIC for E Ink Vizplex RoHS:否 制造商:Maxim Integrated 输入补偿电压: 转换速度: 电源电压-最大:20 V 电源电压-最小:9 V 电源电流: 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:TQFN-38 封装:Tube |
| TPS65182BRGZT | 功能描述:LCD Gamma缓冲器 PMIC for E Ink Vizplex RoHS:否 制造商:Maxim Integrated 输入补偿电压: 转换速度: 电源电压-最大:20 V 电源电压-最小:9 V 电源电流: 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:TQFN-38 封装:Tube |
| TPS65182RGZR | 功能描述:LCD Gamma缓冲器 Pwr Mgt IC for E Ink Vizplex RoHS:否 制造商:Maxim Integrated 输入补偿电压: 转换速度: 电源电压-最大:20 V 电源电压-最小:9 V 电源电流: 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:TQFN-38 封装:Tube |
| TPS65182RGZT | 功能描述:LCD Gamma缓冲器 Pwr Mgt IC for E Ink Vizplex RoHS:否 制造商:Maxim Integrated 输入补偿电压: 转换速度: 电源电压-最大:20 V 电源电压-最小:9 V 电源电流: 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:TQFN-38 封装:Tube |
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