參數(shù)資料
型號(hào)： TPS61041
英文描述： 28-V. 250-mA Switch Boost Converter in SOT-23 for LCD and White LED Applications
中文描述： 28 - V等。 250毫安開關(guān)升壓轉(zhuǎn)換器采用SOT - 23用于LCD和白光LED的應(yīng)用
文件頁(yè)數(shù)： 14/22頁(yè)
文件大小： 392K
代理商： TPS61041
TPS61000, TPS61001, TPS61002, TPS61003, TPS61004, TPS61005, TPS61006, TPS61007
SINGLE-AND DUAL-CELL BOOST CONVERTER WITH START-UP INTO FULL LOAD
SLVS279B – MARCH 2000 – REVISED AUGUST 2000
14
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
The TPS6100x boost converter family is intended for systems that are powered by a single-cell NiCd or NiMH
battery with a typical terminal voltage between 0.9 V to 1.6 V. It can also be used in systems that are 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
TPS6100x is used.
programming the TPS61000 and TPS61007 adjustable output voltage devices
The output voltage of the TPS61000 and TPS61007 can be adjusted with an external resistor divider. The typical
value of the voltage on the FB pin is 500 mV in fixed frequency operation and 485 mV in the power-save
operation mode. The maximum allowed value for the output voltage is 3.3 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
μ
A, the voltage across R4 is typically 500 mV. Based on those two values, the recommended value for
R4 is in the range of 500 k
in order to set the divider current at 1
μ
A. From that, the value of resistor R3,
depending on the needed output voltage V
OUT
, can be calculated using the following equation:
R3
R4
VO
VFB
1
500 k
VO
500 mV
1
(1)
If, as an example, an output voltage of 2.5 V is needed, a 2-M
resistor should be chosen for R3.
VBAT
VOUT
LBO
5
10
3
R5
R3
R4
6
TPS61007
LBI
9
FB
COMP
2
CC1
100 pF
CC2
33 nF
RC
10 k
EN
R2
R1
1
GND
SW
7
4
Ci
10
μ
F
10 V
CO
22
μ
F
10 V
Low Battery
Warning
L1
33
μ
H
D1
FBGND
8
VO
Alkaline Cell
Figure 18. Typical Application Circuit for Adjustable Output Voltage Option
The TPS61007 is an improved version of the TPS61000 adjustable output voltage device.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TPS61041DBV 制造商:TI 制造商全稱:Texas Instruments 功能描述:LOW-POWER DC/DC BOOST CONVERTER IN SOT-23 AND SON PACKAGES
TPS61041DBVR 功能描述:LED照明驅(qū)動(dòng)器 28-V 250-mA Switch Boost Converter RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N
TPS61041DBVR 制造商:Texas Instruments 功能描述:SWITCHING STEP UP CONVERTER 61041
TPS61041DBVRG4 功能描述:LED照明驅(qū)動(dòng)器 28-V 250-mA Switch Boost Converter RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N
TPS61041DBVT 制造商:Texas Instruments 功能描述:
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