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參數(shù)資料
| 型號(hào)： | ISL97646IRZ-T |
| 廠商： | INTERSIL CORP |
| 元件分類(lèi)： | 穩(wěn)壓器 |
| 英文描述： | Boost + LDO + VON Slice + VCOM |
| 中文描述： | 3.1 A SWITCHING REGULATOR, 1400 kHz SWITCHING FREQ-MAX, PQCC24 |
| 封裝： | 4 X 4 MM, ROHS COMPLIANT, PLASTIC, QFN-24 |
| 文件頁(yè)數(shù)： | 12/15頁(yè) |
| 文件大?。?/td> | 450K |
| 代理商： | ISL97646IRZ-T |
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12
FN6265.0
December 21, 2006
The efficiency of LDO is depended on the difference
between input voltage and output voltage, as well as the
output current:
The less difference between input and output voltage, the
higher efficiency it is. The minimum dropout voltage of LDO
of ISL97646 is 300mV.
The ceramic capacitors are recommended for the LDO input
and output capacitor. Larger capacitors help reduce noise
and deviation during transient load change.
Gate Pulse Modulator Circuit
The gate pulse modulator circuit functions as a three way
multiplexer, switching VGHM between ground, VDD1 and
VGH. Voltage selection is provided by digital inputs VDPM
(enable) and VFLK (control). High to low delay and slew
control is provided by external components on pins CE and
RE, respectively. A block diagram of the gate pulse
modulator circuit is shown in Figure 16.
When VDPM is LOW, the block is disabled and VGHM is
grounded. When VDPM is HIGH, the output is determined
by VFLK. When VFLK goes high, VGHM is pulled to VGH by
a 70
Ω
switch. When VFLK goes low, there is a delay
controlled by capacitor CE, following which VGHM is driven
to VDD1, with a slew rate controlled by resistor RE. Note
that VDD1 is used only as a reference voltage for an
amplifier, thus does not have to source or sink a significant
DC current.
η
%
(
)
V
IN1
V
LDO_OUT
–
(
)
I
LDO_OUT
100%
×
×
=
(EQ. 7)
FIGURE 16. GATE PULSE MODULATOR CIRCUIT BLOCK DIAGRAM
+
-
+
-
+
-
VGH
VGH_M
VDD1
RE
CE
VFLK
EnGPM1
VREF
200μA
x240
CONTROL AND
TIMING
ISL97646
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 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 |
| ISL97652 | 4-Channel Integrated LCD Supply with Dual VCOM Amplifiers |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 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(zhuān)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 |
| ISL97648IRTZ-TK | 制造商:Intersil Corporation 功能描述:HIGH VOLTAGE TFT-LCD LOGIC DRIVER (56 LD TQFN 8X8) - Tape and Reel |
| ISL97649AIRZ | 功能描述:PMIC 解決方案 LCD SUPPLY DCP VCOM AMP BPMSET +LDO 28L RoHS:否 制造商:Texas Instruments 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-24 封裝:Reel |
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