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參數(shù)資料
| 型號(hào)： | LT3484EDCB-0#PBF |
| 廠(chǎng)商： | LINEAR TECHNOLOGY CORP |
| 元件分類(lèi)： | 模擬信號(hào)調(diào)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(yè)數(shù)： | 9/12頁(yè) |
| 文件大?。?/td> | 446K |
| 代理商： | LT3484EDCB-0#PBF |
LT3484-0/LT3484-1/LT3484-2
6
3484012f
DONE (Pin 1): Open NPN Collector Indication Pin. When
target output voltage is reached, NPN turns on, pulling Pin
1 low. This pin needs a pull-up resistor or current source.
CHARGE (Pin 2): Charge Pin. A low (<0.3V) to high (>1V)
transition on this pin puts the part into power delivery
mode. Once the target voltage is reached, the part will stop
charging the output. Toggle this pin to start charging
again. Bringing the pin low (<0.3V) will terminate the
power delivery and put the part in shutdown.
VIN (Pin 3): Input Supply Pin. Must be locally bypassed
with a good quality ceramic capacitor. Input supply must
be 2.5V or higher.
SW (Pins 4, 5): Switch Pins. These are the collector of the
internal NPN Power switch. Tie these pins together on the
PC Board. Minimize the metal trace area connected to
these pins to minimize EMI. Tie one side of the primary of
the transformer to these pins. The target output voltage is
set by the turns ratio of the transformer.
Choose Turns Ratio N by the following equation:
N
VOUT
=
+ 2
31 5
.
where VOUT is the desired output voltage.
VBAT (Pin 6): Battery Supply Pin. Must be locally bypassed
with a good quality ceramic capacitor. Battery supply must
be 1.7V or higher. The other terminal of the transformer
primary must be connected to VBAT.
GND (Pin 7): Ground. Tie directly to local ground plane.
UU
U
PI FU CTIO S
VBAT
SW
+
DONE
CHARGE
C1
T1
R2
60k
Q1
ENABLE
CHIP
POWER
COUT
PHOTOFLASH
CAPACITOR
40mV
20mV
TO BATTERY
Q2
VOUT
D1
LT3484-0: RSENSE = 0.015
LT3484-2: RSENSE = 0.022
LT3484-1: RSENSE = 0.03
3484 BD
4, 5
GND
6
1
2
7
+
–
+
–
+
–
+
+–
ONE-
SHOT
ONE-
SHOT
DRIVER
PRIMARY
SECONDARY
MASTER
LATCH
RSENSE
DCM COMPARATOR
VOUT COMPARATOR
R1
2.5k
S
RQ
1.25V
REFERENCE
Q3
Q1
QQ
SR
A3
A1
A2
VIN
TO VCC
3
Figure 1
FU CTIO AL BLOCK DIAGRA
UU
W
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LT3484EDCB-1 | 制造商:LINER 制造商全稱(chēng):Linear Technology 功能描述:Photoflash Capacitor Chargers |
| LT3484EDCB-1#PBF | 制造商:Linear Technology 功能描述:Photo Flash Charger 6-Pin DFN EP |
| LT3484EDCB-1#TR | 功能描述:IC PHOTOFLASH CAP CHARGER 6-DFN RoHS:否 類(lèi)別:集成電路 (IC) >> PMIC - 電源管理 - 專(zhuān)用 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 應(yīng)用:手持/移動(dòng)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(lèi)型:表面貼裝 封裝/外殼:14-WFDFN 裸露焊盤(pán) 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(chēng):LP3905SD-30DKR |
| LT3484EDCB-1#TRM | 功能描述:IC PHOTOFLASH CAP CHARGER 6-DFN RoHS:否 類(lèi)別:集成電路 (IC) >> PMIC - 電源管理 - 專(zhuān)用 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 應(yīng)用:手持/移動(dòng)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(lèi)型:表面貼裝 封裝/外殼:14-WFDFN 裸露焊盤(pán) 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(chēng):LP3905SD-30DKR |
| LT3484EDCB-1#TRMPBF | 功能描述:IC PHOTOFLASH CAP CHARGER 6-DFN RoHS:是 類(lèi)別:集成電路 (IC) >> PMIC - 電源管理 - 專(zhuān)用 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 應(yīng)用:手持/移動(dòng)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(lèi)型:表面貼裝 封裝/外殼:14-WFDFN 裸露焊盤(pán) 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(chēng):LP3905SD-30DKR |
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