- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄68419 > TPS62101DRG4 (TEXAS INSTRUMENTS INC) 1.6 A SWITCHING REGULATOR, 750 kHz SWITCHING FREQ-MAX, PDSO8 PDF資料下載
| 型號： | TPS62101DRG4 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 1.6 A SWITCHING REGULATOR, 750 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | GREEN, SOIC-8 |
| 文件頁數(shù)： | 25/27頁 |
| 文件大小： | 537K |
| 代理商： | TPS62101DRG4 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁當(dāng)前第25頁第26頁第27頁
TPS62100, TPS62101, TPS62102, TPS62103
MULTIMODE LOW POWER BUCK CONVERTER
SLUS446B – MAY 2000 – REVISED DECEMBER 2000
7
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
forced variable frequency (MODE = low)
In this mode, the chip behaves like a 100-mA current source that is turned on and off as the output voltage falls
below or rises above predetermined thresholds. These thresholds are located approximately 1.9% above and
below the nominal output voltage. For instance, if the nominal output is 3.3 V, then the on and off thresholds
are approximately 3.237 V and 3.363 V, respectively. The operational sequence is as follows:
1.
As the output voltage falls below the turn-on threshold, the chip enters a burst period, and the buck switch
is turned on.
2.
When the current in the buck switch rises to 200 mA, the switch is turned off and the synchronous rectifier
is turned on to pass the freewheel current.
3.
As the current in the synchronous rectifier decays to zero, it is turned off and the buck switch is again turned
on, continuing at step 2.
4.
When the output voltage rises above the turn-off threshold, the buck switch is immediately turned off and
the synchronous rectifier is turned on to handle the last cycle of free wheel current. The chip is also taken
out of its burst period and remains dormant until the output voltage falls below the turn-on threshold, at which
point operation continues at step 1.
The reason for limiting the current to 200 mA is to place a limit on the amount of overshoot that can occur from
charging the inductor up with a large current and having a relatively small output capacitance available to absorb
the energy stored.
In this mode, the error amplifier is not used and is essentially turned off, and its output is disconnected from the
COMP pin. The FB pin is connected to two comparators, which generate the internal signals that put the chip
into and out of a burst interval. The threshold levels, referenced to the FB pin, are 0.815 V and 0.785 V (off and
on). Also, the largest load current that can be supplied by the converter operating in this mode is 100 mA.
Sustained load currents greater than 100 mA deplete the energy in the output storage capacitor and cause the
output voltage to fall.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TPS62101DR | 1.6 A SWITCHING REGULATOR, 750 kHz SWITCHING FREQ-MAX, PDSO8 |
| TPS62650YFFT | 1.7 A SWITCHING REGULATOR, 6600 kHz SWITCHING FREQ-MAX, BGA9 |
| TPS62651YFFT | 1.7 A SWITCHING REGULATOR, 6600 kHz SWITCHING FREQ-MAX, BGA9 |
| TPS62651YFF | 1.7 A SWITCHING REGULATOR, 6600 kHz SWITCHING FREQ-MAX, BGA9 |
| TPS62651YFFR | 1.7 A SWITCHING REGULATOR, 6600 kHz SWITCHING FREQ-MAX, BGA9 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TPS62102D | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 Multimode 1MHz Sync Sync Buck 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 |
| TPS62102DG4 | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 Multimode 1MHz Synch Buck 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 |
| TPS62102DR | 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 Multimode 1MHz Sync Sync Buck Converter RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
| TPS62102DRG4 | 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 Multimode 1MHz Sync Sync Buck Converter RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
| TPS62102EVM | 功能描述:電源管理IC開發(fā)工具 TPS62102 Eval Mod RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。