- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄373024 > BQ71501DCKR VOLT REGULATOR|ADJUSTABLE|+1.2V TO +15V|CMOS|TSSOP|6PIN|PLASTIC PDF資料下載
參數(shù)資料
| 型號： | BQ71501DCKR |
| 英文描述： | VOLT REGULATOR|ADJUSTABLE|+1.2V TO +15V|CMOS|TSSOP|6PIN|PLASTIC |
| 中文描述： | 電壓調(diào)節(jié)器|調(diào)節(jié)| 1.2V至15V的|的CMOS | TSSOP封裝| 6針|塑料 |
| 文件頁數(shù)： | 8/13頁 |
| 文件大?。?/td> | 225K |
| 代理商： | BQ71501DCKR |
TPS71525
TPS71533
TPS71501
SLVS338C
–
MAY 2001
–
REVISED APRIL 2002
8
www.ti.com
APPLICATION INFORMATION
programming the TPS71501 adjustable LDO regulator (continued)
Resistors R1 and R2 should be chosen for approximately 1.5-
μ
A divider current. Lower value resistors can be
used for improved noise performance, but the solution consumes more power. Higher resistor values should
be avoided as leakage current into/out of FB across R1/R2 creates an offset voltage that artificially
increases/decreases the feedback voltage and thus erroneously decreases/increases V
O
. The recommended
design procedure is to choose R2 = 1 M
to set the divider current at 1.5
μ
A, and then calculate R1 using:
R1
VO
Vref
1
R2
(4)
OUTPUT VOLTAGE
PROGRAMMING GUIDE
OUTPUT
VOLTAGE
1.8 V
2.8 V
5.0 V
R1
R2
0.499 M
1.33 M
3.16 M
1 M
1 M
1 M
VO
VI
FB
R1
R2
GND
IN
TPS71501
0.1
μ
F
0.47
μ
F
OUT
Figure 14. TPS71501 Adjustable LDO Regulator Programming
battery management application
One application for which this device is particularly suited is providing a regulated voltage from a much larger
input voltage, as is often the case of ICs used in portable battery-powered devices. Many of the battery
management ICs currently on the market monitor battery voltages above 20 V. However, the IC
’
s internal
circuitry and peripheral equipment, like an LED
’
s, generally need a lower power bus for operation. Some of the
battery management ICs have internal LDO regulator controllers that require five or more external components
in order to provide a regulated output voltage. The TPS715xx family has a maximum input voltage rating of
24 V, provides up to 50 mA of output current, and requires only one external component. Therefore, using one
of the TPS715xx regulators to power battery management ICs is a much simpler, more compact, and less
expensive solution than using onboard LDO regulator controllers. In addition, the TPS715xx family uses only
3.2
μ
A of quiescent current and does not significantly decrease battery life while the device is inactive.
TI
’
s bq2060 gas gauge IC was chosen to demonstrate the use of the TPS71533. The bq2060 battery
management IC requires a regulated 3.3 V for normal operation. The bq2060 has a regulator controller output
(REG) that, when used in conjunction with an external JFET (Q2), a bipolar transistor (Q1), two capacitors (C1
and C2), and one resistor (R1), forms a 3.3-V output linear regulator as shown in Figure 15.
相關PDF資料 |
PDF描述 |
|---|---|
| BR01 | Microcontroller |
| BR101 | Silicon controlled switch |
| BR101 | SINGLE-PHASE SILICON BRIDGE |
| BR1010 | SINGLE-PHASE SILICON BRIDGE |
| BR101 | SINGLE-PHASE SILICON BRIDGE RECTIFIER |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| BQ71525DCKR | 功能描述:低壓差穩(wěn)壓器 - LDO 50-mA 2.5-V High Input Voltage RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| BQ71525DCKRG4 | 功能描述:低壓差穩(wěn)壓器 - LDO 50-mA 2.5-V High Input Voltage RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| BQ71533DCKR | 功能描述:低壓差穩(wěn)壓器 - LDO 50-mA 3.3-V High Input Voltage RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| BQ71533DCKRG4 | 功能描述:低壓差穩(wěn)壓器 - LDO 50-mA 3.3-V High Input Voltage RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| BQ76200EVM-606 | 功能描述:BQ76200 - Power Management, Battery Pack Monitor Evaluation Board 制造商:texas instruments 系列:- 零件狀態(tài):新產(chǎn)品 主要用途:電源管理，電池組監(jiān)控器 嵌入式:- 使用的 IC/零件:BQ76200 主要屬性:板載測試點 輔助屬性:- 所含物品:板 標準包裝:1 |
發(fā)布緊急采購，3分鐘左右您將得到回復。