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參數(shù)資料
| 型號(hào)： | TPS61107RGE |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 1.8 A SWITCHING REGULATOR, 800 kHz SWITCHING FREQ-MAX, PQCC24 |
| 封裝： | PLASTIC, QFN-24 |
| 文件頁數(shù)： | 10/34頁 |
| 文件大小： | 798K |
| 代理商： | TPS61107RGE |
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APPLICATION INFORMATION
DESIGN PROCEDURE
Programming the Output Voltage
R3 + R6
V
O
V
FB
–1
+ 180 kW
V
O
500 mV
–1
(1)
SWN
C3
10
F
Power
Supply
L1
10
H
R1
R2
VBAT
VOUT
FB
R3
R6
LDOIN
R5
R4
LDOSENSE
LDOOUT
R7
R8
R9
C6
2.2
F
C4
100
F
U1
LBO1
LBO2
PGOOD
PGND
LBI
SKIPEN
ADEN
EN
ENPB
LDOEN
GND
TPS61100
VCC1
Boost Output
VCC2
LDO Output
Control
Outputs
C5
R5 + R4
V
O
V
FB
–1
+ 180 kW
V
O
500 mV
–1
(2)
TPS61100, TPS61103
TPS61106, TPS61107
SLVS411B – JUNE 2002 – REVISED APRIL 2004
The TPS6110x boost converters are intended for systems powered by a single-cell NiCd or NiMH battery with a
typical terminal voltage between 0.9 V and 1.6 V. They can also be used in systems powered by two-cell NiCd or
NiMH batteries with a typical stack voltage between 1.8 V and 3.2 V. Additionally, single- or dual-cell, primary
and secondary alkaline battery cells can be the power source in systems where the TPS6110x is used.
Boost Converter
The output voltage of the TPS61100 boost converter section can be adjusted with an external resistor divider.
The typical value of the voltage on the FB pin is 500 mV. The maximum allowed value for the output voltage is
5.5 V. The current through the resistive divider should be about 100 times greater than the current into the FB
pin. The typical current into the FB pin is 0.01 A and the voltage across R6 is typically 500 mV. Based on those
two values, the recommended value for R6 should be lower than 500 k
, in order to set the divider current at 1
A or higher. Because of internal compensation circuitry the value for this resistor should be in the range of 200
k
. From that, the value of resistor R3, depending on the needed output voltage (V
O), can be calculated using
Equation 1:
If as an example, an output voltage of 3.3 V is needed, a 1-M
resistor should be chosen for R3.
Figure 28. Typical Application Circuit for Adjustable Output Voltage Option
LDO
Programming the output voltage at the LDO follows almost the same rules as at the boost converter section. The
maximum programmable output voltage at the LDO is 3.3 V. Since reference and internal feedback circuitry are
similar, as they are at the boost converter section, R4 also should be in the 200-k
range. The calculation of the
value of R5 can be done using the following Equation 2:
If as an example, an output voltage of 1.5 V is needed, a 360 k
-resistor should be chosen for R5.
18
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TPS61107RGER | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 3.3V Boost Cnvrtr w/1.8V 120mA LDO 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 |
| TPS61107RGERG4 | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 3.3V Boost Cnvrtr w/1.8V 120mA LDO 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 |
| TPS61120 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:SYNCHRONOUS BOOST CONVERTER WITH 1.1A SWITCH AND INTEGRATED LDO |
| TPS61120EVM-205 | 功能描述:電源管理IC開發(fā)工具 TPS61120-205 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 |
| TPS61120PW | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 Adj Hi-Eff Boost Cnvrtr w/200mA LDO 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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