參數(shù)資料
型號(hào)： TPS6734IP
廠商： TEXAS INSTRUMENTS INC
元件分類： 穩(wěn)壓器
英文描述： 1.5 A SWITCHING REGULATOR, 170 kHz SWITCHING FREQ-MAX, PDIP8
封裝： ROHS COMPLIANT, PLASTIC, DIP-8
文件頁(yè)數(shù)： 5/22頁(yè)
文件大?。?/td> 479K
代理商： TPS6734IP
TPS6734I
FIXED 12-V 120-mA BOOST-CONVERTER SUPPLY
SLVS127A – AUGUST 1995 – REVISED JANUARY 1999
13
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
bootstrapped output circuit
For operation below 2.7 V, the TPS6734 may be connected in a bootstrap configuration as shown in Figure 11.
The bootstrap configuration is less efficient (requires more supply current and suffers a loss in efficiency at
voltages below 5 V; see Figure 12) and is not recommended except for very low voltage operating conditions.
Because the output-driver stage, which benefits most from higher voltages, is diode-coupled to the output
voltage (see Figure 2), the bootstrapped configuration provides no benefit except at very low voltages. In the
shutdown mode (EN = low), no-load quiescent current is unchanged (3
A max) whether in the bootstrap or the
typical configuration.
VCC
FB
OUT
GND
EN
REF
SS
COMP
1
2
3
4
8
7
6
5
TPS6734
0.001
F
18
H
1 A, 20 V
VI
2 V to 12 V
ENABLE
+
33
F
VO
12 V, 120 mA
0.0047
F
Figure 11. TPS6734 Bootstrap Configuration
82
80
76
74
10 20 30 40 50 60 70
%
–
Efficiency
72
84
EFFICIENCY
vs
OUTPUT CURRENT FOR TYPICAL AND BOOTSTRAP
86
80 90 100
140
78
110 120 130
IO – Output Current – mA
70
68
66
Typical
Bootstrap
VCC = 5 V
Figure 12
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TPS6734IPE4 功能描述:直流/直流開關(guān)調(diào)節(jié)器 Fixed 12-V 120-MA Boost-Conv Supply 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
TPS6735EVM 功能描述:電源管理IC開發(fā)工具 Neg 5V 200mA Vout DC/DC Inverter 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
TPS6735ID 功能描述:直流/直流開關(guān)調(diào)節(jié)器 200mA 12V DC/DC 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
TPS6735ID 制造商:Texas Instruments 功能描述:IC's
TPS6735IDG4 功能描述:直流/直流開關(guān)調(diào)節(jié)器 Fixed Neg 5-V 200-MA Inv DC/DC Converter 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
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