參數(shù)資料
型號(hào)： TPS3106K33DBVR
廠商： TEXAS INSTRUMENTS INC
元件分類(lèi)： 電源管理
英文描述： 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO6
封裝： GREEN, PLASTIC, SOT-23, 6 PIN
文件頁(yè)數(shù)： 5/24頁(yè)
文件大?。?/td> 590K
代理商： TPS3106K33DBVR
www.ti.com
APPLICATION INFORMATION
R1 + R2
V
TRIP
V
IT(S)
* 1
(1)
TPS3106E09DBV
SENSE
GND
R1
R2
V
DD
RSTVDD
RSTSENSE
R3
2Cell
NiMH
ResetOutput
MR
TPS3103xxx
TPS3106xxx
TPS3110xxx
SLVS363E – AUGUST 2001 – REVISED SEPTEMBER 2007
The TPS31xx family has a quiescent current in the 1-
μA to 2-μA range. When RESET is active, triggered by the
voltage monitored at VDD, the quiescent current increases to about 20 μA (see the Electrical Characteristics).
In some applications it is necessary to minimize the quiescent current even during the reset period. This is
especially true when the voltage of a battery is supervised and the RESET is used to shut down the system or
for an early warning. In this case the reset condition will last for a longer period of time. The current drawn from
the battery should almost be zero, especially when the battery is discharged.
For this kind of application, either the TPS3103 or TPS3106 is a good fit. To minimize current consumption,
select a version where the threshold voltage is lower than the voltage monitored at VDD. The TPS3106 has two
reset outputs. One output (RSTVDD) is triggered from the voltage monitored at VDD. The other output
(RSTSENSE) is triggered from the voltage monitored at SENSE. In the application shown in Figure 8, the
TPS3106E09 is used to monitor the input voltage of two NiCd or NiMH cells. The threshold voltage (V(TH) = 0.86
V) was chosen as low as possible to ensure that the supply voltage is always higher than the threshold voltage
at VDD. The voltage of the battery is monitored using the SENSE input. The voltage divider was calculated to
assert a reset using the RSTSENSE output at 2
× 0.8 V = 1.6 V.
where:
VTRIP is the voltage of the battery at which a reset is asserted and
VIT(S) is the threshold voltage at SENSE = 0.551 V.
R1 was chosen for a resistor current in the 1-
μA range.
With VTRIP = 1.6 V:
R1
≡ 1.9
× R2
R1 = 820 k
, R2 = 430 k
Figure 8. Battery Monitoring with 3-
μA Supply Current for Device and Resistor Divider
Copyright 2001–2007, Texas Instruments Incorporated
13
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TPS3106K33DBVRG4 功能描述:監(jiān)控電路 Current/Supply-Volt Supervisory RoHS:否 制造商:STMicroelectronics 監(jiān)測(cè)電壓數(shù): 監(jiān)測(cè)電壓: 欠電壓閾值: 過(guò)電壓閾值: 輸出類(lèi)型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開(kāi)關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel
TPS3106K33DBVT 功能描述:監(jiān)控電路 Current/Supply-Volt Supervisory RoHS:否 制造商:STMicroelectronics 監(jiān)測(cè)電壓數(shù): 監(jiān)測(cè)電壓: 欠電壓閾值: 過(guò)電壓閾值: 輸出類(lèi)型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開(kāi)關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel
TPS3106K33DBVTG4 功能描述:監(jiān)控電路 Current/Supply-Volt Supervisory RoHS:否 制造商:STMicroelectronics 監(jiān)測(cè)電壓數(shù): 監(jiān)測(cè)電壓: 欠電壓閾值: 過(guò)電壓閾值: 輸出類(lèi)型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開(kāi)關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel
TPS3106K33DVB 制造商:TI 制造商全稱(chēng):Texas Instruments 功能描述:ULTRALOW SUPPLY CURRENT/SUPPLY VOLTAGE SUPERVISORY CIRCUITS
TPS3106K33DVBR 制造商:TI 制造商全稱(chēng):Texas Instruments 功能描述:ULTRALOW SUPPLY CURRENT/SUPPLY VOLTAGE SUPERVISORY CIRCUITS
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