参数资料
型号: TC1303B-DE0EUNTR
厂商: Microchip Technology Inc.
英文描述: 500 mA Synchronous Buck Regulator, + 300 mA LDO with Power-Good Output
中文描述: 500毫安同步降压稳压器,300 mA的LDO具有电源就绪输出
文件页数: 13/30页
文件大小: 441K
代理商: TC1303B-DE0EUNTR
2005 Microchip Technology Inc.
DS21949A-page 13
TC1303B
Note:
Unless otherwise indicated,
V
IN1
= V
IN2
= SHDN1,2 = 3.6V, C
OUT1
= C
IN
= 4.7 μF, C
OUT2
= 1 μF, L
= 4.7 μH,
V
OUT1
(ADJ) = 1.8V, T
A
= +25°C.
Boldface
specifications apply over the T
A
range of -40°C to +85°C. T
A
= +25°C. Adjustable or fixed
output voltage options can be used to generate the Typical Performance Characteristics.
FIGURE 2-31:
Low vs. Ambient Temperature.
PG Output Voltage Level
FIGURE 2-32:
High vs. Ambient Temperature.
PG Output Voltage Level
FIGURE 2-33:
Rejection vs. Frequency.
V
OUT2
Power Supply Ripple
FIGURE 2-34:
V
OUT2
Noise vs. Frequency.
FIGURE 2-35:
vs. Time.
V
OUT1
Load Step Response
FIGURE 2-36:
vs. Time.
V
OUT2
Load Step Response
0.01
0.012
0.014
0.016
0.018
0.02
-
-
-
5
2
3
5
6
8
9
1
1
Ambient Temperature (°C)
P
O
V
IN
= 3.6V
I
OL
= 1.2 mA
SHDN1 = V
IN2
SHDN2 = V
IN2
0.0
0.5
1.0
1.5
2.0
2.5
3.0
-40 -25 -10
5
20
35
50
65
80
95 110 125
Ambient Temperature (°C)
P
O
V
IN
= 3.6V
I
OH
= 500 μA
V
OUT2
= 2.8V
V
OUT2
= 2.5V
V
OUT2
= 1.5V
SHDN1 = V
IN2
SHDN2 = V
IN2
-80
-70
-60
-50
-40
-30
-20
-10
0
0.01
0.1
1
10
100
1000
Frequency (kHz)
V
O
SHDN1 = GND
V
OUT2
= 1.5V
I
OUT2
= 30 mA
C
IN
= 0 μF
C
OUT2
= 1.0 μF
C
OUT2
= 4.7 μF
0.01
0.1
1
10
0.01
0.1
1
10
100
1000
10000
Frequency (kHz)
V
O
SHDN1 = A
GND
SHDN2 = V
IN2
V
IN
= 3.6V
V
OUT2
= 2.5V
I
OUT2
= 50 mA
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