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參數(shù)資料
| 型號： | EL7641AILTZ-T7 |
| 廠商： | INTERSIL CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | TFT-LCD DC/DC with Integrated Amplifiers |
| 中文描述： | 0.15 A SWITCHING REGULATOR, 1350 kHz SWITCHING FREQ-MAX, QCC32 |
| 封裝： | 5 X 5 MM, ROHS COMPLIANT, MO-220, QFN-32 |
| 文件頁數(shù)： | 8/19頁 |
| 文件大?。?/td> | 458K |
| 代理商： | EL7641AILTZ-T7 |
16
FN6270.0
May 15, 2006
Component Selection for Start-up Sequencing and
Fault Protection
The CREF capacitor is typically set at 220nF and is required
to stabilize the VREF output. The range of CREF is from
22nF to 1F and should not be more than five times the
capacitor on CDEL to ensure correct start-up operation.
The CDEL capacitor is typically 100nF and has a usable
range from 22nF minimum to several microfarads – only
limited by the leakage in the capacitor reaching A levels.
CDEL should be at least 1/5 of the value of CREF (see
above). Note that with 100nF on CDEL the fault time-out will
be typically 23ms and the use of a larger/smaller value will
vary this time proportionally (e.g. 1F will give a fault time-
out period of typically 230ms).
Fault Sequencing
The EL7640A, EL7641A and EL7642A have an advanced
fault detection system which protects the IC from both
adjacent pin shorts during operation and shorts on the output
VCDEL
IN
VREF
VBOOST
VOFF
VON
V
REF
ON
V
BO
OST
SOFT-START
V
OFF
ON
V
ON
SO
FT-START
F
AULT
DE
TECTE
D
C
H
IP
DIS
ABL
E
D
NORMAL
OPERATION
FAULT
PRESENT
START-UP SEQUENCE
TIMED BY CDEL
tON
tDEL1
tDEL2
tDEL3
VON SLICE CIRCUIT
FIGURE 23. START-UP SEQUENCE
NOTE: Not to scale
EL7640A, EL7641A, EL7642A
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| EL7641ILTZ | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 EL7641ILTZ TFT-LCD D DC-DC W/INTEGRTD AMP 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: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| EL7641ILTZ-T13 | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 EL7641ILTZ TFT-LCD D DC-DC W/INTEGRTD AMP 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: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| EL7641ILTZ-T7 | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 EL7641ILTZ TFT-LCD D DC-DC W/INTEGRTD AMP 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: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| EL7642 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:TFT-LCD DC/DC with Integrated Amplifiers |
| EL7642AILTZ | 功能描述:LCD 驅(qū)動器 EL7642AILTZ TFT-LCD DC-DC W/INTEGRTD AMP 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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