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參數(shù)資料
| 型號： | AAT1152IKS-2.5-T1 |
| 廠商： | Advanced Analogic Technologies, Inc. |
| 英文描述： | 850kHz 1A Synchronous Buck DC/DC Converter |
| 中文描述： | 850kHz 1A條同步降壓DC / DC轉(zhuǎn)換器 |
| 文件頁數(shù)： | 10/18頁 |
| 文件大?。?/td> | 335K |
| 代理商： | AAT1152IKS-2.5-T1 |
AAT1152
850kHz 1A Synchronous Buck DC/DC Converter
10
1152.2003.01.0.9
Figure 1: Inrush Limit
200
μ
μ
sec/div
V
1V/div
I
L
0.5A/div
Enable
2V/div
V
IN
=3.6V
V
OUT
=1.5V
I
L
=1A
Figure 2.
Current Limit Characteristic
0
0.5
1
1.5
2
2.5
3
3.5
0
0.5
1
1.5
2
2.5
I
OUT
(A)
V
O
V
CC
=V
=3.6V
V
= 1.5V
Figure 3 schematic
V
CC
=V
P
= 5.0V
V
O
= 3.3V
Figure 4 schematic
Power and Signal Source
Separate small signal ground and power supply
pins isolate the internal control circuitry from the
noise associated with the output MOSFET switch-
ing. The low pass filter R1 and C3 in schematic fig-
ures 3 and 4 filters the noise associated with the
power switching.
Current Limit and Over-temperature
protection
For overload conditions the peak input current is
limited. Figure 2 displays the VI current limit char-
acteristics. As load impedance decreases and the
output voltage falls closer to zero, more power is
dissipated internally, raising the device tempera-
ture. Thermal protection completely disables
switching when internal dissipation becomes
excessive, protecting the device from damage. The
junction over-temperature threshold is 140°C with
15°C of hysteresis.
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| AAT1152IKS-3.0-T1 | 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:850kHz 1A Synchronous Buck DC/DC Converter |
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