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參數(shù)資料
| 型號(hào)： | EL7641ILTZ-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： | 3 A SWITCHING REGULATOR, 1350 kHz SWITCHING FREQ-MAX, QCC32 |
| 封裝： | 5 X 5 MM, ROHS COMPLIANT, MO-220, TQFN-32 |
| 文件頁(yè)數(shù)： | 9/19頁(yè) |
| 文件大小： | 493K |
| 代理商： | EL7641ILTZ-T7 |
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9
FN7415.1
September 26, 2005
Applications Information
The EL7640, EL7641, EL7642 provide a highly integrated
multiple output power solution for TFT-LCD applications.
The system consists of one high efficiency boost converter
and two low cost linear-regulator controllers (V
ON
and
V
OFF
) with multiple protection functions. The block diagram
of the whole part is shown in Figure 17. Table 1 lists the
recommended components.
The EL7640, EL7641, EL7642 integrate an N-channel
MOSFET in boost converter to minimize the external
component counts and cost. The V
ON
, V
OFF
linear-
regulators are independently regulated by using external
resistors. To achieve higher voltage than V
BOOST
, one or
multiple stage charge pumps may be used.
FIGURE 13. START-UP SEQUENCE
FIGURE 14. OP AMP RAIL-TO-RAIL INPUT/OUTPUT
FIGURE 15. PACKAGE POWER DISSIPATION vs AMBIENT
TEMPERATURE
FIGURE 16. PACKAGE POWER DISSIPATION vs AMBIENT
TEMPERATURE
Typical Performance Curves
(Continued)
INPUT
VOLTAGE
V
BOOST
V
ON
V
OFF
C
DEL
=220nF
TIME (20ms/DIV)
INPUT
OUTPUT
TIME (50μs/DIV)
JEDEC JESD51-3 AND SEMI G42-88
(SINGLE LAYER) TEST BOARD
0.8
0.7
0.5
0.3
0.2
0.1
0
0
25
50
75
100
150
AMBIENT TEMPERATURE (°C)
P
125
85
0.6
0.4
θ
JA
=125°C/W
QFN32
758mW
JEDEC JESD51-7 HIGH EFFECTIVE
THERMAL CONDUCTIVITY TEST BOARD -
QFN EXPOSED DIEPAD SOLDERED TO
PCB PER JESD51-5
3
2.5
2
1.5
1
0.5
0
0
25
50
75
100
150
AMBIENT TEMPERATURE (°C)
P
2.857W
θ
JA
=35°C/W
QFN32
125
85
TABLE 1. RECOMMENDED COMPONENTS
DESIGNATION
DESCRIPTION
C
1
, C
2
, C
3
10μF, 16V X5R ceramic capacitor (1210)
D1
1A 20V low leakage schottky rectifier
(CASE 457-04)
ON SEMI MBRM120ET3
D
11
, D
12
, D
21
200mA 30V schottky barrier diode (SOT-23)
Fairchild BAT54S
L
1
6.8μH 1.3A Inductor
TDK SLF6025T-6R8M1R3-PF
Q
11
200mA 40V PNP amplifier (SOT-23)
Fairchild MMBT3906
Q
21
200mA 40V NPN amplifier (SOT-23)
Fairchild MMBT3904
EL7640, EL7641, EL7642
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| EL7642ILTZ-T7 | TFT-LCD DC/DC with Integrated Amplifiers |
| EL7640 | TFT-LCD DC/DC with Integrated Amplifiers |
| EL7641 | TFT-LCD DC/DC with Integrated Amplifiers |
| EL7640ILTZ | TFT-LCD DC/DC with Integrated Amplifiers |
| EL7641ILTZ | TFT-LCD DC/DC with Integrated Amplifiers |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 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(dòng)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(shí)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 |
| EL7642AILTZ-T13 | 功能描述:LCD 驅(qū)動(dòng)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(shí)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 |
| EL7642AILTZ-T7 | 功能描述:LCD 驅(qū)動(dòng)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(shí)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 |
| EL7642ILTZ | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 EL7642ILZ TFT-LCD 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(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
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