- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄1933 > LT3750EMS#TRPBF (Linear Technology)IC CONVERTER 10MSOP PDF資料下載
參數(shù)資料
| 型號： | LT3750EMS#TRPBF |
| 廠商： | Linear Technology |
| 文件頁數(shù)： | 15/16頁 |
| 文件大小： | 0K |
| 描述： | IC CONVERTER 10MSOP |
| 標(biāo)準(zhǔn)包裝： | 2,500 |
| 類型： | 回掃，正向轉(zhuǎn)換器 |
| 應(yīng)用： | 電源控制器 |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 10-TFSOP，10-MSOP（0.118"，3.00mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 10-MSOP |
| 包裝： | 帶卷 (TR) |
| 相關(guān)產(chǎn)品： | 732-2128-6-ND - TRANS POWR FOR LT3751/LT3750 SMD 732-2128-1-ND - TRANS POWR FOR LT3751/LT3750 SMD 732-2128-2-ND - TRANS POWR FOR LT3751/LT3750 SMD |
8
LT3750
3750fa
APPLICATIO S I FOR ATIO
WU
UU
Safety Warning
Large capacitors charged to high voltage can deliver a
lethal amount of energy if handled improperly. It is par-
ticularly important to observe appropriate safety mea-
sures when designing the LT3750 into applications. First,
create a discharge circuit that allows the designer to safely
discharge the output capacitor. Second, adequately space
high voltage nodes from adjacent traces to satisfy printed
circuit board voltage breakdown requirements. High volt-
age nodes are the drain of the NMOS, the secondary side
of the transformer, and the output.
Transformer Selection
The flyback transformer is critical to proper operation of
the LT3750. It must be designed carefully so that it does
not cause excessive current or voltage on any pin of the
part.
As with all circuits, the LT3750 has finite bandwidth. In
order to give the LT3750 sufficient time to detect the
output voltage, observe the following restrictions on the
primary inductance:
L
Vs
NI
PRI
OUT
PK
≥
1
otherwise, the LT3750 may overcharge the output.
Linear Technology has worked with several leading mag-
netic component manufacturers to produce flyback trans-
formers for use with the LT3750. Table 1 summarizes the
particular transformer characteristics.
Switching Period
The LT3750 employs an open-loop control scheme caus-
ing the switching period to decrease with output voltage.
Typical switching frequency is between 100kHz to 300kHz.
Figure 3 shows typical switching period in an application
with a 3A peak current.
VOUT (V)
0
TIME
(
s)
4
8
12
16
20
50
100
150
200
3750 F03
250
300
Figure 3. Typical Switching Period vs VOUT
Table 1. Recommended Transformers
MANUFACTURER
PART NUMBER
SIZE L
× W × H (mm)
MAXIMUM IPRI (A)
LPRI (H)
TURNS RATIO (PRI:SEC)
TDK
DCT15EFD-U44S003
22.5
× 16.5 × 8.5
5
10
1:10
(www.tdk.com)
DCT20EFD-U32S003
30
× 22 × 12
10
1:10
Sumida
C8118 Rev P1
21
× 14 × 8
3
10
1:10
(www.sumida.com)
C8117 Rev P1
23
× 18.6 × 10.8
5
10
1:10
C8119 Rev P1
32.3
× 27 × 14
10
1:10
Midcom
32050
23.1
× 18 × 9.4
3
10
1:10
(www.midcom.com)
32051
28.7
× 22 × 11.4
5
10
1:10
32052
28.7
× 22 × 11.4
10
1:10
Coilcraft
DA2032-AL
17.2
× 22 × 8.9
3
10
1:10
(www.coilcraft.com)
DA2033-AL
17.4
× 24.1 × 10.2
5
10
1:10
DA2034-AL
20.6
× 30 × 11.3
10
1:10
Output Diode Selection
When choosing the rectifying diode, ensure its peak
repetitive forward current rating exceeds the peak cur-
rent (IPK/N) and that the peak repetitive reverse voltage
rating exceeds VOUT + (N)(VTRANS). The average current
through the diode varies during the charge cycle because
the switching period decreases as VOUT increases. The
average current through the diode is greatest when the
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LT6300CGN#TRPBF | IC XDSL LINE DRIVER 16-SSOP |
| LT6555CUF#PBF | IC VIDEO MULTIPLEXER 2X1 24QFN |
| LT6556IUF#TRPBF | IC VIDEO MULTIPLEXER 2X1 24QFN |
| LTC1059CN#PBF | IC FILTER BUILDING BLOCK 14-DIP |
| LTC1060ACN | IC FILTER BUILDING BLOCK 20-DIP |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LT3751 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Capacitor Charger Controller with Regulation |
| LT3751EFE#PBF | 功能描述:IC CTRLR CAP CHRGR 20-TSSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 電源管理 - 專用 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:50 系列:- 應(yīng)用:熱電冷卻器 電流 - 電源:- 電源電壓:3 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.173"，4.40mm 寬）裸露焊盤 供應(yīng)商設(shè)備封裝:28-TSSOP 裸露焊盤 包裝:管件 產(chǎn)品目錄頁面:1410 (CN2011-ZH PDF) |
| LT3751EFE#PBF | 制造商:Linear Technology 功能描述:; Leaded Process Compatible:Yes; Peak Re |
| LT3751EFE#TRPBF | 功能描述:IC CTRLR CAP CHARGER 20-TSSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 電源管理 - 專用 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 應(yīng)用:手持/移動設(shè)備 電流 - 電源:- 電源電壓:3 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:14-WFDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:14-LLP-EP（4x4） 包裝:Digi-Reel® 配用:LP3905SD-30EV-ND - BOARD EVALUATION LP3905SD-30 其它名稱:LP3905SD-30DKR |
| LT3751EUFD | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Capacitor Charger Controller with Regulation |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。