- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄30767 > LT3585EDDB-2#PBF (LINEAR TECHNOLOGY CORP) 0.95 A BATTERY CHARGE CONTROLLER, PDSO10 PDF資料下載
參數(shù)資料
| 型號： | LT3585EDDB-2#PBF |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 0.95 A BATTERY CHARGE CONTROLLER, PDSO10 |
| 封裝： | 3 X 2 MM, LEAD FREE, PLASTIC, MO-229WECD-1, DFN-10 |
| 文件頁數(shù)： | 10/20頁 |
| 文件大?。?/td> | 423K |
| 代理商： | LT3585EDDB-2#PBF |
LT3585-0/LT3585-1
LT3585-2/LT3585-3
18
3585f
TYPICAL APPLICATIO S
U
5
4
6
1
2
3
U1
VIN
3585 F15
TO
DONE
R3
100k
1/10W
0402
R1
5k
1/10W
0402
RT
100k
CT
0.1
mF
ENABLE
TO
CHRG/IADJ
U1: PANASONIC UP04979 COMPOSITE TRANSISTORS
Figure 15. Auto Refresh Application
VOUT
100V/DIV
CHRG/IADJ
2V/DIV
ENABLE
2V/DIV
2sec/DIV
LT3585-1
COUT = 50F
ENABLE < 0.3V
ENABLE > 1.1V
NORMAL OP.
AUTO
REFRESH
AUTO
REFRESH
ENABLE
<0.3V
ENABLE
>1.1V
ENABLE < 0.3V
3585 F16
VOUT
2V/DIV
AC RIPPLE
CHRG/IADJ
2V/DIV
200ms/DIV
LT3585-1
COUT = 50F
3585 F17
Figure 16. Auto Refresh Basic Operation
Figure 17. VOUT AC Ripple in Auto Refresh Mode
The LT3585 series can be auto-refreshed using the addi-
tional circuitry shown in Figure 15 with its basic operation
shown in Figure 16. The ENABLE pin is used to enable
or disable the auto-refresh charging mode. Without an
auto-refresh circuit, the output voltage will droop due to
output capacitor and output diode leakage currents. The
circuit in Figure 15 uses the DONE and CHRG/IADJ pins
to form an open-loop control scheme. The output voltage
target is sensed through the DONE pin with the PFET of
U1, Panasonic UP04979 composite transistor. When the
DONE pin goes low during the VOUT trip condition, the
PFET charges the auto-refresh timing node comprised
of RT and CT, and in turn, pulls the CHRG/IADJ pin low
through a NFET and disables the LT3585 series part. The
DONE pin immediately goes high in shutdown, releasing
the timing node and allowing the voltage at Pins 2 and 3
to decay. After approximately a RTCT time constant, the
CHRG/IADJ pin is released and the LT3585 series part is
enabled. This cycle is repeated to maintain a constant DC
output voltage. The open-loop control method places a
constraint on the control loop dominant time constant,
RT CT, given by:
RC
IL
IV
TT
PK
PRI
LK
BAT
>
2
where ILK is the known leakage current, IPK is the trans-
former peak primary current, and LPRI is the transformer
primary inductance. If this condition is not met, a runaway
condition could occur. The LT3585 series part would
continue to charge the output voltage past the internal
output trip voltage. Figure 17 shows the AC ripple of a
typical auto-refresh circuit with the proper selection of
RT and CT.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LT3641EUFD#PBF | 3.4 A DUAL SWITCHING CONTROLLER, 2350 kHz SWITCHING FREQ-MAX, PQCC28 |
| LT3641IUFD#TRPBF | 3.4 A DUAL SWITCHING CONTROLLER, 2350 kHz SWITCHING FREQ-MAX, PQCC28 |
| LT3641EFE#TRPBF | 3.4 A DUAL SWITCHING CONTROLLER, 2350 kHz SWITCHING FREQ-MAX, PDSO28 |
| LT3641EUFD#TRPBF | 3.4 A DUAL SWITCHING CONTROLLER, 2350 kHz SWITCHING FREQ-MAX, PQCC28 |
| LT3641IUFD#PBF | 3.4 A DUAL SWITCHING CONTROLLER, 2350 kHz SWITCHING FREQ-MAX, PQCC28 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LT3585EDDB-3 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Photofl ash Chargers with Adjustable Input Current and IGBT Drivers |
| LT3585EDDB-3#TRPBF | 功能描述:IC CHARGER PHOTOFLASH 10-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(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 |
| LT3587 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:High Voltage Monolithic Inverter and Dual Boost |
| LT3587EUD#PBF | 功能描述:IC REG BOOST INV ADJ DL 20QFN RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關(guān)穩(wěn)壓器 系列:- 產(chǎn)品培訓(xùn)模塊:MIC23xxx HyperLight Load™ Regulators 標準包裝:5,000 系列:HyperLight Load® 類型:降壓（降壓） 輸出類型:固定 輸出數(shù):1 輸出電壓:1.8V 輸入電壓:2.7 V ~ 5.5 V PWM 型:混合物 頻率 - 開關(guān):4MHz 電流 - 輸出:2A 同步整流器:是 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:8-VFDFN 裸露焊盤，8-MLF? 包裝:帶卷 (TR) 供應(yīng)商設(shè)備封裝:8-MLF?（2x2） 產(chǎn)品目錄頁面:1094 (CN2011-ZH PDF) 其它名稱:576-3303-2 |
| LT3587EUD#TRPBF | 功能描述:IC REG BOOST INV ADJ DL 20QFN RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關(guān)穩(wěn)壓器 系列:- 標準包裝:2,500 系列:- 類型:降壓（降壓） 輸出類型:固定 輸出數(shù):1 輸出電壓:1.2V，1.5V，1.8V，2.5V 輸入電壓:2.7 V ~ 20 V PWM 型:- 頻率 - 開關(guān):- 電流 - 輸出:50mA 同步整流器:是 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:10-TFSOP，10-MSOP（0.118"，3.00mm 寬）裸露焊盤 包裝:帶卷 (TR) 供應(yīng)商設(shè)備封裝:10-MSOP 裸露焊盤 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。