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參數資料
型號: TPS65167ARHARG4
廠商: TEXAS INSTRUMENTS INC
元件分類: 穩壓器
英文描述: 4.9 A SWITCHING REGULATOR, 900 kHz SWITCHING FREQ-MAX, PQCC40
封裝: 6 X 6 MM, GREEN, PLASTIC, MO-220VJJD-2, QFN-40
文件頁數: 20/41頁
文件大小: 1270K
代理商: TPS65167ARHARG4
www.ti.com
OSC
750 kHz
Control
Logic
Softstart
Vref
0V
SUPN
DRVN
FBN
Q7
PGND
IDRVN
Vout + *VREF
R7
R8
+ *1.213 V
R7
R8
(13)
R7 + R8
|Vout|
V
REF
+ R8
|Vout|
1.213
(14)
LDO Controller Generating Vaux
SLVS760C – APRIL 2007 – REVISED MARCH 2008
Figure 29. Negative Charge Pump Block TPS65167
The output voltage is VGL = (–Vin) + Vdrop. Vdrop is the voltage drop across the external diodes and internal
charge pump MOSFETs.
Setting the output voltage:
Since the reference output driver current should typically not exceed 30
A, the lower feedback resistor value R8
should be in a range of 40 k
to 120 k. The negative charge pump requires two external Schottky diodes. The
peak current rating of the Schottky diode has to be twice the load current of the output. For the external
component selection refer to Table 12.
For a 20-mA output current, the dual Schottky diode BAV99 or BAT54 is recommended.
Table 12. Capacitor Selection
CAPACITOR
COMPONENT SUPPLIER
COMMENT
330 nF/35 V
Taiyo Yuden GMK212BJ334KG
Flying capacitor C15
2.2
F/10 V
Taiyo Yuden LMK107BJ225KA
Output capacitor on VGL
BAV99/BAT54
Any
Dual Schottky diode
The TPS65167 has a LDO controller using an external pass transistor. The input of the LDO controller can be
the 12-V power supply input or the output of the 3.3-V logic rail, as generated by the step-down converter. The
LDO controller is connected to the 3.3-V rail in order to minimize power losses across the external pass
transistor.
Copyright 2007–2008, Texas Instruments Incorporated
27
Product Folder Link(s): TPS65167 TPS65167A
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相關代理商/技術參數
參數描述
TPS65167EVM-277 功能描述:電源管理IC開發工具 TPS65167 Eval Mod RoHS:否 制造商:Maxim Integrated 產品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V
TPS65167RHAR 功能描述:其他電源管理 Compact LCD Bias Supply RoHS:否 制造商:Texas Instruments 輸出電壓范圍: 輸出電流:4 mA 輸入電壓范圍:3 V to 3.6 V 輸入電流: 功率耗散: 工作溫度范圍:- 40 C to + 110 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-48 封裝:Reel
TPS65167RHARG4 功能描述:LCD 驅動器 12V/3.5A(I/O) 4-CH Multi-Converter RoHS:否 制造商:Maxim Integrated 數位數量:4.5 片段數量:30 最大時鐘頻率:19 KHz 工作電源電壓:3 V to 3.6 V 最大工作溫度:+ 85 C 最小工作溫度:- 20 C 封裝 / 箱體:PDIP-40 封裝:Tube
TPS65167RHAT 功能描述:其他電源管理 Compact LCD Bias Supply RoHS:否 制造商:Texas Instruments 輸出電壓范圍: 輸出電流:4 mA 輸入電壓范圍:3 V to 3.6 V 輸入電流: 功率耗散: 工作溫度范圍:- 40 C to + 110 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-48 封裝:Reel
TPS65167RHATG4 功能描述:LCD 驅動器 12V/3.5A(I/O) 4-CH Multi-Converter RoHS:否 制造商:Maxim Integrated 數位數量:4.5 片段數量:30 最大時鐘頻率:19 KHz 工作電源電壓:3 V to 3.6 V 最大工作溫度:+ 85 C 最小工作溫度:- 20 C 封裝 / 箱體:PDIP-40 封裝:Tube
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