參數資料
型號： EL7640ILTZ
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
文件頁數： 9/19頁
文件大小： 493K
代理商： EL7640ILTZ
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)
D
相關PDF資料
PDF描述
EL7641ILTZ TFT-LCD DC/DC with Integrated Amplifiers
EL7642ILTZ TFT-LCD DC/DC with Integrated Amplifiers
EL7640ILTZ-T13 TFT-LCD DC/DC with Integrated Amplifiers
EL7641ILTZ-T13 TFT-LCD DC/DC with Integrated Amplifiers
EL7642ILTZ-T13 TFT-LCD DC/DC with Integrated Amplifiers
相關代理商/技術參數
參數描述
EL7640ILTZ-T13 功能描述:直流/直流開關調節(jié)器 EL7640ILTZ TFT-LCD DC-DC W/INTEGRTD AMP RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
EL7640ILTZ-T7 功能描述:直流/直流開關調節(jié)器 EL7640ILTZ-T7 TFT-LC DC-DC W/INTEGRTD AMP RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
EL7641 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:TFT-LCD DC/DC with Integrated Amplifiers
EL7641AILTZ 功能描述:LCD 驅動器 EL7641AILTZ TFT-LCD DC-DC W/INTEGRTD AMP RoHS:否 制造商:Maxim Integrated 數位數量:4.5 片段數量: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
EL7641AILTZ-T13 功能描述:LCD 驅動器 EL7641AILTZ TFT-LCD DC-DC W/INTEGRTD AMP RoHS:否 制造商:Maxim Integrated 數位數量:4.5 片段數量: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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