- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄382828 > AAT1123IJS-1.2-T1 (Advanced Analog Technology,lnc.) 1MHz Step-Down Converter PDF資料下載
參數(shù)資料
| 型號： | AAT1123IJS-1.2-T1 |
| 廠商： | Advanced Analog Technology,lnc. |
| 英文描述： | 1MHz Step-Down Converter |
| 中文描述： | 1MHz的降壓轉(zhuǎn)換器 |
| 文件頁數(shù)： | 13/20頁 |
| 文件大?。?/td> | 568K |
| 代理商： | AAT1123IJS-1.2-T1 |
AAT1123
1MHz Step-Down Converter
1123.2007.02.1.6
13
Table 2: Adjustable Resistor Values For Use
With 0.6V Step-Down Converter.
Thermal Calculations
There are three types of losses associated with the
AAT1123 step-down converter: switching losses,
conduction losses, and quiescent current losses.
Conduction losses are associated with the R
DS(ON)
characteristics of the power output switching
devices. Switching losses are dominated by the
gate charge of the power output switching devices.
At full load, assuming continuous conduction mode
(CCM), a simplified form of the losses is given by:
I
Q
is the step-down converter quiescent current.
The term t
sw
is used to estimate the full load step-
down converter switching losses.
For the condition where the step-down converter is
in dropout at 100% duty cycle, the total device dis-
sipation reduces to:
P
TOTAL
= I
O
2
· R
DSON(HS)
+ I
Q
· V
IN
P
TOTAL
I
O
2
· (R
DSON(HS)
· V
O
+ R
DSON(LS)
· [V
IN
- V
O
])
V
IN
=
+ (t
sw
· F · I
O
+ I
Q
) · V
IN
R2 = 59k
Ω
R1 (k
Ω
)
19.6
29.4
39.2
49.9
59.0
68.1
78.7
88.7
118
124
137
187
267
R2 = 221k
Ω
R1 (k
Ω
)
75
113
150
187
221
261
301
332
442
464
523
715
1000
V
OUT
(V)
0.8
0.9
1.0
1.1
1.2
1.3
1.4
1.5
1.8
1.85
2.0
2.5
3.3
Figure 5: AAT1123 Adjustable Evaluation Board Schematic.
L1 CDRH3D16-4R7
C1 22
F 6.3V 0805 X5R
C2 4.7
μ
F 6.3V 0805 X5R
4.7
μ
H
L1
22
μ
F
C1
4.7
μ
F
C2
U1 AAT1123 SC70JW-8
V
OUT
GND
V
IN
1
2
3
Enable
LX
EN
1
OUT
2
VIN
3
LX
4
AGND
5
PGND
6
PGND
7
PGND
8
AAT1123
U1
GND2
118k
R1
59k
R2
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AAT1142 | 800mA Voltage-Scaling Step-Down Converter |
| AAT1142ITP-1.8-T1 | 800mA Voltage-Scaling Step-Down Converter |
| AAT1142IWP-1.8-T1 | 800mA Voltage-Scaling Step-Down Converter |
| AAT1147 | High Efficiency, Low Noise, Fast Transient 400mA Step-Down Converter |
| AAT1147IJS-0.6-T1 | High Efficiency, Low Noise, Fast Transient 400mA Step-Down Converter |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AAT1125IJS-0.6-T1 | 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
| AAT1126 | 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:600mA, 1MHz Step-Down Converter |
| AAT1126IGV-0.6-T1 | 制造商:Skyworks Solutions Inc 功能描述:SKYAAT1126IGV-0.6-T1 DC/DC CONVERTERS (S 制造商:Skyworks Solutions Inc 功能描述:DC TO DC CONVERTER |
| AAT1130 | 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:2.5MHz 500mA Step-Down DC/DC Converter |
| AAT1130IJQ-0.6 | 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:2.5MHz 500mA Step-Down DC/DC Converter |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。