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參數(shù)資料
| 型號： | AAT1110_06 |
| 廠商： | Advanced Analog Technology,lnc. |
| 英文描述： | Fast Transient 800mA Step-Down Converter |
| 中文描述： | 快速瞬態(tài)800mA的降壓轉(zhuǎn)換器 |
| 文件頁數(shù)： | 14/19頁 |
| 文件大?。?/td> | 710K |
| 代理商： | AAT1110_06 |
AAT1110
Fast Transient 800mA Step-Down Converter
14
1110.2006.04.1.0
The adjustable version of the AAT1110, combined
with an external feedforward capacitor (C4 in
Figure 1), delivers enhanced transient response for
extreme pulsed load applications. The addition of
the feedforward capacitor typically requires a larg-
er output capacitor C1 for stability.
Table 2: Adjustable Resistor Values For Use
With 0.6V Step-Down Converter.
Thermal Calculations
There are three types of losses associated with
the AAT1110 step-down converter: switching loss-
es, conduction losses, and quiescent current loss-
es. Conduction losses are associated with the
R
DS(ON)
characteristics of the power output switch-
ing devices. Switching losses are dominated by
the gate charge of the power output switching
devices. At full load, assuming continuous conduc-
tion mode (CCM), a simplified form of the LDO
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.
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
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
75K
113K
150K
187K
221K
261K
301K
332K
442K
464K
523K
715K
1.00M
Figure 5: AAT1110 Adjustable Evaluation Board Schematic.
L1 CDRH3D16-4R7
C1 10
F 10V 0805 X5R
C2 4.7
μ
F 10V 0805 X5R
4.7
μ
H
L1
10
μ
F
C1
4.7
μ
F
C2
U1 AAT1110 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
AAT1110
U1
GND2
118k
R1
59k
R2
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| AAT1110IJS-0.6-T1 | 制造商:Skyworks Solutions Inc 功能描述:DC TO DC CONVERTER |
| AAT1110IJS-3.3-T1 | 功能描述:直流/直流開關轉(zhuǎn)換器 2.7-5.5Vin 800mA 1.4MHz Step-Down RoHS:否 制造商:Monolithic Power Systems (MPS) 最大輸入電壓: 開關頻率: 輸出電壓: 輸出電流: 輸出端數(shù)量: 最大工作溫度: 安裝風格: |
| AAT1110-S | 制造商:AAT 制造商全稱:AAT 功能描述:ONE-CHANNEL STEP-DOWN PWM CONTROLLER |
| AAT1110-S-T | 制造商:AAT 制造商全稱:AAT 功能描述:ONE-CHANNEL STEP-DOWN PWM CONTROLLER |
| AAT1110-T2 | 制造商:AAT 制造商全稱:AAT 功能描述:ONE-CHANNEL STEP-DOWN PWM CONTROLLER |
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