參數(shù)資料
型號(hào)： AAT2556
廠商： Advanced Analog Technology,lnc.
英文描述： Battery Charger and Step-Down Converter for Portable Applications
中文描述： 電池充電器和降壓轉(zhuǎn)換器為便攜式應(yīng)用
文件頁數(shù)： 24/29頁
文件大?。?/td> 708K
代理商： AAT2556
Step-Down Converter Design Example
Specifications
V
O
= 1.8V @ 250mA, Pulsed Load
Δ
I
LOAD
= 200mA
V
IN
= 2.7V to 4.2V (3.6V nominal)
F
S
= 1.5MHz
T
AMB
= 85°C
1.8V Output Inductor
(use 3.0μH; see Table 3)
For Sumida inductor CDRH2D09-3R0, 3.0μH, DCR = 150m
Ω
.
1.8V Output Capacitor
V
DROOP
= 0.1V
1
2
3
1
1.8V · (4.2V - 1.8V)
3.0μH · 1.5MHz · 4.2V
2
3
RMS
I
L1 · F
S
· V
IN(MAX)
= ·
·
3 ·
Δ
I
LOAD
V
DROOP
· F
S
3 · 0.2A
0.1V · 1.5MHz
C
OUT
=
=
= 4μF; use 4.7μF
· = 66mArms
·
(V
O
) · (V
IN(MAX)
- V
O
)
=
P
esr
= esr · I
RMS2
= 5m
Ω
· (66mA)
2
= 21.8μW
V
V
1.8
V
1.8V
Δ
I
L1
= L1
1 - V
F
S
IN
3.0μH
1.5MHz 1 - = 228mA
4.2V
I
PKL1
= I
O
+
Δ
I
L1
= 250mA + 114mA = 364mA
2
P
L1
= I
O
2
DCR = 250mA
2
150m
Ω
= 9.375mW
L1 = 1.67 A
V
O2
= 1.67 A
1.8V = 3μH
μsec
μsec
AAT2556
Battery Charger and Step-Down
Converter for Portable Applications
24
2556.2006.09.1.2
相關(guān)PDF資料
PDF描述
AAT2556IWP-CA-T1 Battery Charger and Step-Down Converter for Portable Applications
AAT2803 Six-Channel White LED Backlight Charge Pump with Flash
AAT2803ISK-4.5-T1 Six-Channel White LED Backlight Charge Pump with Flash
AAT3110IGU-4.5-T1 MicroPower⑩ Regulated Charge Pump
AAT3110IGU-5.0-T1 MicroPower⑩ Regulated Charge Pump
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AAT2556IWP-CA-T1 制造商:AAT 制造商全稱:AAT 功能描述:Battery Charger and Step-Down Converter for Portable Applications
AAT2557 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:500mA Battery Charger and 300mA LDO Regulator for Portable Systems
AAT2557ITO-CT-T1 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:500mA Battery Charger and 300mA LDO Regulator for Portable Systems
AAT2557ITO-CW-T1 功能描述:電池管理 500 mA Battery Chrg 300 mA LDO Reg RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel
AAT2601 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:Total Power Solution for Portable Applications
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購

我的聯(lián)系方式

*
*
*