參數(shù)資料
型號： TPS65166RHAR
廠商： TEXAS INSTRUMENTS INC
元件分類： 模擬信號調(diào)理
英文描述： SPECIALTY ANALOG CIRCUIT, PQCC40
封裝： 6 X 6 MM, GREEN, PLASTIC, M0-220VJJD-2, QFN-40
文件頁數(shù)： 10/45頁
文件大?。?/td> 3690K
代理商： TPS65166RHAR
log
_
450
22
ic
PG
low
V
R
W
=
W +
(1)
_
log
22 (1
)
PG high
ic
out
V
R
A
I
m
=
-
+
(2)
Setting the Delay Times DLY1, DLY2
DLY
th
5 A
DLY
5 A
DLY
C
=
, with DLY = Desired delay time
V
1.24 V
m
m
(3)
DLY
5
A
2.5 ms
C
=
= 10.1 nF
CDLY = 10 nF
1.24 V
m
(4)
Boost Converter
SLVS976 – SEPTEMBER 2009.......................................................................................................................................................................................... www.ti.com
The resulting PG voltage if PG pin is high impedance is dependent on R22 connection voltage (Vlogic), R22 value
and output current Iout of PG node. The output current is flowing to the external scan driver. Assuming a
maximum switch leakage current of 1
A the minimum PG output voltage can be calculated as following:
Recommended are R22 values between 5k
and 500k. Typical value for R22 is 10k.
Connecting an external capacitor to the DLY1 and DLY2 pins sets the delay time. The capacitor is charged with
a constant current source of typically 5
A. The delay time is terminated when the capacitor voltage has reached
the threshold voltage of Vth = 1.24V. If no capacitor is set, the delay time is zero. The external capacitors can be
calculated as follows:
Example for setting a delay time of 2.5ms:
The non-synchronous current mode boost converter operates in Pulse Width Modulation (PWM) operation with a
fixed frequency of 750 kHz. For maximum flexibility and stability with different external components the converter
uses external loop compensation. At start up the boost converter starts with an externally adjustable soft-start.
The boost converter provides the supply voltage for the LCD source driver as well as for the charge pump
regulator VONE. This needs to be taken into account when defining the output current requirements for the boost
converter. No feed-forward capacitor is needed for proper operation.
18
Copyright 2009, Texas Instruments Incorporated
Product Folder Link(s): TPS65166
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TPS65167ARHAR 功能描述:其他電源管理 Compact LCD Bias Sply 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(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-48 封裝:Reel
TPS65167ARHARG4 功能描述:其他電源管理 Compact LCD Bias Sply 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(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-48 封裝:Reel
TPS65167EVM-277 功能描述:電源管理IC開發(fā)工具 TPS65167 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
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(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-48 封裝:Reel
TPS65167RHARG4 功能描述:LCD 驅(qū)動器 12V/3.5A(I/O) 4-CH Multi-Converter RoHS:否 制造商:Maxim Integrated 數(shù)位數(shù)量:4.5 片段數(shù)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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