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參數資料
| 型號： | LT3484EDCB-1#PBF |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 模擬信號調理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PDSO6 |
| 封裝： | 2 X 3 MM, LEAD FREE, PLASTIC, MO-229TBD, DFN-6 |
| 文件頁數： | 2/12頁 |
| 文件大?。?/td> | 446K |
| 代理商： | LT3484EDCB-1#PBF |
LT3484-0/LT3484-1/LT3484-2
10
3484012f
Board Layout
The high voltage operation of the LT3484-0/LT3484-1/
LT3484-2 demands careful attention to board layout. You
will not get advertised performance with careless layout.
Figure 5 shows the recommended component placement.
Keep the area for the high voltage end of the secondary as
small as possible. Also note the larger than minimum
spacing for all high voltage nodes in order to meet break-
down voltage requirements for the circuit board.
It is
imperative to keep the electrical path formed by C1, the
primary of T1, and the LT3484-0/LT3484-1/LT3484-2 as
short as possible. If this path is haphazardly made long, it
will effectively increase the leakage inductance of T1,
which may result in an overvoltage condition on the
SW pin.
APPLICATIO S I FOR ATIO
WU
U
Figure 5. Suggested Layout: Keep Electrical Path Formed by C1,
Transformer Primary and LT3484-0/LT3484-1/LT3484-2 Short
R1
D1
(DUAL DIODE)
C1
SECONDARY
PRIMARY
COUT
PHOTOFLASH
CAPACITOR
T1
VIN
VBAT
CHARGE
DONE
C2
+
3484 F05
4
5
6
3
2
1
TYPICAL APPLICATIO S
U
R1
100k
C2
0.1
F
VIN
2.5V TO 8V
+
DONE
CHARGE
C1
4.7
F
T1
1:10.2
VBAT
1.8V TO 8V
320V
1
2
4
5
3484 F06
COUT
PHOTOFLASH
CAPACITOR
C1: 4.7
F, X5R OR X7R, 10V
T1: KIJIMA MUSEN PART# SBL-5.6-1, LPRI = 10H, N = 10.2
D1: VISHAY GSD2004S DUAL DIODE CONNECTED IN SERIES
R1: PULL UP RESISTOR NEEDED IF DONE PIN USED
D1
2
3
1
7
6
4, 5
CHARGE
VIN
DONE
LT3484-0
GND
VBAT
SW
R1
100k
C2
0.1
F
VIN
2.5V TO 8V
DONE
CHARGE
VBAT
1.8V TO 8V
C1: 4.7
F, X5R OR X7R, 10V
T1: KIJIMA MUSEN PART# SBL-5.6S-1, LPRI = 24H, N = 10.2
D1: VISHAY GSD2004S DUAL DIODE CONNECTED IN SERIES
R1: PULL UP RESISTOR NEEDED IF DONE PIN USED
+
C1
4.7
F
T1
1:10.2
COUT
PHOTOFLASH
CAPACITOR
320V
D1
4
3
5
6
3484 F07
2
3
1
7
6
4, 5
CHARGE
VIN
DONE
LT3484-1
VBAT
GND
SW
Figure 6. LT3484-0 Photoflash Charger Uses
High Efficiency 4mm Tall Transformer
Figure 7. LT3484-1 Photoflash Charger Uses
High Efficiency 3mm Tall Transformer
Table 3. Recommended Output Diodes
MAX REVERSE VOLTAGE
MAX FORWARD CONTINUOUS CURRENT
CAPACITANCE
PART
(V)
(mA)
(pF)
VENDOR
GSD2004S
2x300
225
5
Vishay
(Dual Diode)
(402) 563-6866
www.vishay.com
BAV23S
2x250
225
5
Philips Semiconductor
(Dual Diode)
(800) 447-1500
www.philips.com
MMBD3004S
2x350
225
5
Diodes Inc
(Dual Diode)
(816) 251-8800
www.diodes.com
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相關代理商/技術參數 |
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| LT3484EDCB-2 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Photoflash Capacitor Chargers |
| LT3484EDCB-2#TR | 功能描述:IC PHOTOFLASH CAP CHARGER 6-DFN RoHS:否 類別:集成電路 (IC) >> PMIC - 電源管理 - 專用 系列:- 標準包裝:1 系列:- 應用:手持/移動設備 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 供應商設備封裝:14-LLP-EP（4x4） 包裝:Digi-Reel® 配用:LP3905SD-30EV-ND - BOARD EVALUATION LP3905SD-30 其它名稱:LP3905SD-30DKR |
| LT3484EDCB-2#TRM | 功能描述:IC PHOTOFLASH CAP CHARGER 6-DFN RoHS:否 類別:集成電路 (IC) >> PMIC - 電源管理 - 專用 系列:- 標準包裝:1 系列:- 應用:手持/移動設備 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 供應商設備封裝:14-LLP-EP（4x4） 包裝:Digi-Reel® 配用:LP3905SD-30EV-ND - BOARD EVALUATION LP3905SD-30 其它名稱:LP3905SD-30DKR |
| LT3484EDCB-2#TRMPBF | 功能描述:IC PHOTOFLASH CAP CHARGER 6-DFN RoHS:是 類別:集成電路 (IC) >> PMIC - 電源管理 - 專用 系列:- 標準包裝:1 系列:- 應用:手持/移動設備 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 供應商設備封裝:14-LLP-EP（4x4） 包裝:Digi-Reel® 配用:LP3905SD-30EV-ND - BOARD EVALUATION LP3905SD-30 其它名稱:LP3905SD-30DKR |
| LT3484EDCB-2#TRPBF | 功能描述:IC PHOTOFLASH CAP CHARGER 6-DFN RoHS:是 類別:集成電路 (IC) >> PMIC - 電源管理 - 專用 系列:- 標準包裝:1 系列:- 應用:手持/移動設備 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 供應商設備封裝:14-LLP-EP（4x4） 包裝:Digi-Reel® 配用:LP3905SD-30EV-ND - BOARD EVALUATION LP3905SD-30 其它名稱:LP3905SD-30DKR |
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