參數(shù)資料
型號(hào)： TPS54429ERSAT
廠商： TEXAS INSTRUMENTS INC
元件分類： 穩(wěn)壓器
英文描述： 0.01 A SWITCHING REGULATOR, PQCC16
封裝： PLASTIC, QFN-16
文件頁(yè)數(shù)： 26/26頁(yè)
文件大?。?/td> 907K
代理商： TPS54429ERSAT
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T - Junction Temperature - °C
J
I
-Shutdown
Current
-
A
VINSDN
m
0
200
400
600
800
1000
1200
-50
0
50
100
150
T - Junction Temperature - °C
J
I
-Supply
Current
-
A
VIN
m
SLVSAS0 –FEBRUARY 2011
Over/Under Voltage Protection
The TPS54429E detects over and undervoltage conditions by monitoring the feedback voltage (VFB). This
function is enabled after approximately 1.7 times the soft-start time. When the feedback voltage becomes higher
than 120% of the target voltage, the OVP comparator output goes high and the circuit latches the high-side
MOSFET driver turns off and the low-side MOSFET turns on. When the feedback voltage becomes lower than
65% of the target voltage, the UVP comparator output goes high and an internal UVP delay counter begins. After
250 s, the device latches off both internal top and bottom MOSFET.
UVLO Protection
Undervoltage lock out protection (UVLO) monitors the voltage of the VREG5 pin. When the VREG5 voltage is lower
than UVLO threshold voltage, the TPS54429E is shut off. This is protection is non-latching.
Thermal Shutdown
Thermal protection is self-activating. If the junction temperature exceeds the threshold value (typically 165°C),
the TPS54429E shuts off. This protection is non-latching.
SPACER
TYPICAL CHARACTERISTICS
Vin CURRENT
Vin SHUTDOWN CURRENT
vs
JUNCTION TEMPERATURE
Figure 1.
Figure 2.
2011, Texas Instruments Incorporated
9
Product Folder Link(s) :TPS54429E
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TPS54429EVM-608 功能描述:電源管理IC開發(fā)工具 TPS54429 Eval Mod RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評(píng)估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V
TPS54429PWP 功能描述:直流/直流開關(guān)調(diào)節(jié)器 7V-18Vin,4.5A Sync Step-Down DCAP2 Mode RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
TPS54429PWPR 功能描述:直流/直流開關(guān)調(diào)節(jié)器 7V-18Vin,4.5A Sync Step-Down DCAP2 Mode RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
TPS54478 制造商:TI 制造商全稱:Texas Instruments 功能描述:2.95-V to 6-V Input, 4-A Output, 2-MHz, Synchronous Step-Down
TPS54478EVM-037 功能描述:電源管理IC開發(fā)工具 TPS54478 Eval Mod RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評(píng)估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V
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