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參數(shù)資料
| 型號(hào)： | ISL97646 |
| 廠商： | Intersil Corporation |
| 英文描述： | Boost + LDO + VON Slice + VCOM |
| 中文描述： | 升壓穩(wěn)壓器馮片威科姆 |
| 文件頁(yè)數(shù)： | 9/15頁(yè) |
| 文件大?。?/td> | 450K |
| 代理商： | ISL97646 |
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9
FN6265.0
December 21, 2006
Typical Application Diagram
Applications Information
The ISL97646 provides a complete power solution for TFT
LCD applications. The system consists of one boost
converter to generate A
VDD
voltage for column drivers, one
logic LDO regulator to provide voltage to logic circuit in the
LCD panel, one integrated V
COM
buffer which can provide
up to 400mA peak current. This part also integrates Gate
Pulse Modulator circuit that can help to optimize the picture
quality.
Enable Control
When enable pin is pulling down, the ISL97646 is shut down
reducing the supply current to <10μA. When the voltage at
enable pin reaches 2.2V, the ISL97646 is on.
Boost Converter
Frequency Selection
The ISL97646 switching frequency can be user selected to
operate at either constant 650kHz or 1.2MHz. Lower
switching frequency can save power dissipation, while
higher switching frequency can allow smaller external
components like inductor and output capacitors, etc.
Connecting FREQ pin to ground sets the PWM switching
frequency to 650MHz, or connecting FREQ pin to V
IN
for
1.2MHz.
Soft-Start
The soft-start is provided by an internal 2.5μA current source
to charge the external soft start capacitor. The ISL97646
ramps up current limit from 0A up to full value, as the voltage
at SS pin ramps from 0 to 1.2V. Hence the soft-start time is
4.8ms when the soft-start capacitor is 10nF, 22.6ms for 47nF
and 48ms for 100nF.
BOOST
GPM
CIRCUIT
V
ON
A
VDD
VIN2
ENABLE
VGH
VDD_1
VGH_M
LX
FB
VFLK
COMP
SS
POS
NEG-
LDO
CONTROLLER
LDO_OUT
ADJ
VIN1
GND
VDPM
FREQ-
CE
RE
OUT
V
LOGIC
PGND
VDD2
AGND
V
IN
C1
22μF
C3
2.2nF
C4
10nF
C5
470P
R3
2k
C11
1μF
C6
0.1μF
C7
4.7μF
2.2μF
R2
1.3k
R1
10k
C2
47μF
L1
10μH
D1
R5
10k
C10
FIGURE 14. TYPICAL APPLICATION DIAGRAM
C9 (OPTIONAL)
TO ROW DRIVER
V
COM
+4.0V
A
VDD
R6
130k
R7
80k
ISL97646
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ISL97646IRZ-T | Boost + LDO + VON Slice + VCOM |
| ISL97646IRZ-TK | Boost + LDO + VON Slice + VCOM |
| ISL97650 | 4-Channel Integrated LCD Supply |
| ISL97650ARTZ-T | 4-Channel Integrated LCD Supply |
| ISL97650ARTZ-TK | 4-Channel Integrated LCD Supply |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ISL97646IRZ-EVALZ | 功能描述:BOARD EVALUATION FOR ISL97646 RoHS:是 類(lèi)別:編程器，開(kāi)發(fā)系統(tǒng) >> 評(píng)估板 - DC/DC 與 AC/DC（離線）SMPS 系列:- 產(chǎn)品培訓(xùn)模塊:Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:True Shutdown™ 主要目的:DC/DC，步升 輸出及類(lèi)型:1，非隔離 功率 - 輸出:- 輸出電壓:- 電流 - 輸出:1A 輸入電壓:2.5 V ~ 5.5 V 穩(wěn)壓器拓?fù)浣Y(jié)構(gòu):升壓 頻率 - 開(kāi)關(guān):3MHz 板類(lèi)型:完全填充 已供物品:板 已用 IC / 零件:MAX8969 |
| ISL97646IRZ-T | 功能描述:直流/直流開(kāi)關(guān)調(diào)節(jié)器 ISL97646IRZOOST +L DO +VON SLICE +VCOM RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開(kāi)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 |
| ISL97646IRZ-TK | 功能描述:直流/直流開(kāi)關(guān)調(diào)節(jié)器 ISL97646IRZOOST +L DO +VON SLICE +VCOM RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開(kāi)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 |
| ISL97648IRTZ | 功能描述:IC BOOST DC/DC REG RoHS:是 類(lèi)別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 專用型 系列:- 標(biāo)準(zhǔn)包裝:2,000 系列:- 應(yīng)用:控制器，DSP 輸入電壓:4.5 V ~ 25 V 輸出數(shù):2 輸出電壓:最低可調(diào)至 1.2V 工作溫度:-40°C ~ 85°C 安裝類(lèi)型:表面貼裝 封裝/外殼:30-TFSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:30-TSSOP 包裝:帶卷 (TR) |
| ISL97648IRTZ-T | 制造商:Intersil Corporation 功能描述:HIGH VOLTAGE TFT-LCD LOGIC DRIVER (56 LD TQFN 8X8) - Tape and Reel |
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