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參數(shù)資料
| 型號： | LTC2802IDE |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | Buffer和線驅(qū)動 |
| 英文描述： | 1.8V to 5.5V RS-232 Single and Dual Transceivers; Package: DFN; No of Pins: 12; Temperature Range: -40°C to +85°C |
| 中文描述： | LINE TRANSCEIVER, PDSO12 |
| 封裝： | 4 X 3 MM, PLASTIC, M0-229WGED, DFN-12 |
| 文件頁數(shù)： | 3/16頁 |
| 文件大小： | 659K |
| 代理商： | LTC2802IDE |
11
2801234f
LTC2801/LTC2802/
LTC2803/LTC2804
Figure 8. Supply Overshoot Protection for Input
Supplies of 4.5V or Higher
APPLICATIO S I FOR ATIO
WU
UU
Table 3. Recommended Inductors
PART
ISAT
MAX DCR
SIZE
NUMBER
(mA)
(
Ω)
(mm)
MANUFACTURER
LQH2MCN100K02L
225
1.2
2x1.6x0.95 Murata
www.murata.com
LBC2016T100K
245
0.85
2x1.6x1.6
Taiyo Yuden
www.t-yuden.com
FSLB2520-100K
220
1.1
2.5x2x1.6
Toko
www.tokoam.com
Capacitor Selection
The small size of ceramic capacitors makes them ideal for
the LTC2801 family. X5R and X7R (preferred) types are
recommended because their ESR is low and they retain their
capacitance over relatively wide voltage and temperature
ranges. Use a voltage rating of at least 10V.
Table 4. Recommended Ceramic Capacitor Manufacturers
MANUFACTURER
URL
Murata
www.murata.com
TDK
www.tdk.com
Taiyo Yuden
www.t-yuden.com
AVX
www.avxcorp.com
Kemet
www.kemet.com
Inrush Current and Supply Overshoot Precaution
In certain applications, such as battery-operated and
wall-adapter devices, fast supply slew rates are generated
when power is connected. If VCC’s voltage is greater than
4.5V and its rise time is faster than 10μs, the pins VDD
and SW can exceed their ABS MAX values during start-
up. When supply voltage is applied to VCC, the voltage
difference between VCC and VDD generates inrush current
owing through inductor L1 and capacitors C1, C2. The
peak inrush current must not exceed 2A. To avoid this
condition, add a 1Ω resistor as shown in Figure 8. This
precaution is not relevant for supply voltages below 4.5V
or rise times longer than 10μs.
Board Layout
The board layout should minimize the length and area of
the SW and CAP traces. Suggested compact layouts for
the LTC2801 family are shown in Figure 9 (a) and (b).
VL
VCC
GND
C1
C5
C3
TOP VIEW
= VIA
TOP VIEW
= VIA
C4
C2
L1
2801F09
SW
CAP
VDD
GND
SCALE R1 WITH C1, C2, 1/C4
C1
220nF
L1
10
H
4.5V TO 5.5V
VCC
R1
1
1/8W
C4
1
F
C2
1
F
INRUSH
CURRENT
2801F08
Figure 9. Recommended Board Layouts for (a) Single and
(b) Dual Transceiver Parts
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| LTC2803CDHC | 1.8V to 5.5V RS-232 Single and Dual Transceivers; Package: DFN; No of Pins: 16; Temperature Range: 0°C to +70°C |
| LTC2803IGN-1 | 1.8V to 5.5V RS-232 Single and Dual Transceivers; Package: SSOP; No of Pins: 16; Temperature Range: -40°C to +85°C |
| LTC2804CDHC | 1.8V to 5.5V RS-232 Single and Dual Transceivers; Package: DFN; No of Pins: 16; Temperature Range: 0°C to +70°C |
| LTC2804IDHC | 1.8V to 5.5V RS-232 Single and Dual Transceivers; Package: DFN; No of Pins: 16; Temperature Range: -40°C to +85°C |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
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| LTC2802IDE#PBF | 功能描述:IC TXRX RS232 12-DFN RoHS:是 類別:集成電路 (IC) >> 接口 - 驅(qū)動器，接收器，收發(fā)器 系列:- 產(chǎn)品培訓(xùn)模塊:RS-232 & USB Transceiver 標(biāo)準(zhǔn)包裝:2,000 系列:- 類型:收發(fā)器 驅(qū)動器/接收器數(shù):1/1 規(guī)程:RS232 電源電壓:3 V ~ 5.5 V 安裝類型:表面貼裝 封裝/外殼:16-SSOP（0.209"，5.30mm 寬） 供應(yīng)商設(shè)備封裝:16-SSOP 包裝:帶卷 (TR) 其它名稱:296-19849-2 |
| LTC2802IDE#TRPBF | 功能描述:IC TXRX RS232 12-DFN RoHS:是 類別:集成電路 (IC) >> 接口 - 驅(qū)動器，接收器，收發(fā)器 系列:- 標(biāo)準(zhǔn)包裝:121 系列:- 類型:收發(fā)器 驅(qū)動器/接收器數(shù):1/1 規(guī)程:RS422，RS485 電源電壓:3 V ~ 3.6 V 安裝類型:表面貼裝 封裝/外殼:10-WFDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:10-DFN（3x3） 包裝:管件 |
| LTC2803CDHC | 制造商:Linear Technology 功能描述:Dual Transmitter/Receiver RS-232 16-Pin DFN EP |
| LTC2803CDHC#PBF | 功能描述:IC TXRX RS232 DUAL 16-DFN RoHS:是 類別:集成電路 (IC) >> 接口 - 驅(qū)動器，接收器，收發(fā)器 系列:- 產(chǎn)品培訓(xùn)模塊:RS-232 & USB Transceiver 標(biāo)準(zhǔn)包裝:2,000 系列:- 類型:收發(fā)器 驅(qū)動器/接收器數(shù):1/1 規(guī)程:RS232 電源電壓:3 V ~ 5.5 V 安裝類型:表面貼裝 封裝/外殼:16-SSOP（0.209"，5.30mm 寬） 供應(yīng)商設(shè)備封裝:16-SSOP 包裝:帶卷 (TR) 其它名稱:296-19849-2 |
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