参数资料
型号: TC1303B-EF1EMF
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: 4/30页
文件大小: 441K
代理商: TC1303B-EF1EMF
TC1303B
DS21949A-page 12
2005 Microchip Technology Inc.
Note: Unless otherwise indicated, VIN1 = VIN2 = SHDN1,2 = 3.6V, COUT1 =CIN =4.7 F, COUT2 =1 F, L =4.7 H,
VOUT1 (ADJ) = 1.8V, TA = +25°C. Boldface specifications apply over the TA range of -40°C to +85°C. TA = +25°C. Adjustable or fixed
output voltage options can be used to generate the Typical Performance Characteristics.
FIGURE 2-25:
VOUT2 Dropout Voltage vs.
Ambient Temperature (VOUT2 = 2.5V).
FIGURE 2-26:
VOUT2 Dropout Voltage vs.
Ambient Temperature (VOUT2 = 3.3V).
FIGURE 2-27:
VOUT2 Line Regulation vs.
Ambient Temperature.
FIGURE 2-28:
VOUT2 Load Regulation vs.
Ambient Temperature.
FIGURE 2-29:
PG Active Delay Time-out
vs. Ambient Temperature.
FIGURE 2-30:
PG Threshold Voltage vs.
Ambient Temperature.
0.05
0.10
0.15
0.20
0.25
0.30
-4
0
-2
5
-1
0
5
20
35
50
65
80
95
110
125
Ambient Temperature (°C)
V
OU
T
2
D
ropo
ut
Vol
tage
(V)
IOUT2 = 200 mA
IOUT2 = 300 mA
SHDN1 = AGND
SHDN2 = VIN2
0.0
0.1
0.2
0.3
-40 -25 -10
5
20 35 50 65
80 95 110 125
Ambient Temperature (°C)
V
OU
T
2
D
ropo
ut
Vo
lt
ag
e
(
V
)
IOUT2 = 200 mA
SHDN1 = AGND
SHDN2 = VIN2
IOUT2 = 300 mA
-0.035
-0.030
-0.025
-0.020
-0.015
-0.010
-0.005
0.000
0.005
-40 -25 -10
5
20
35
50
65
80
95 110 125
Ambient Temperature (°C)
V
OUT
2
Li
n
e
R
e
gu
la
ti
on
(%
/V
)
VOUT2 = 3.3V
IOUT2 = 100 A
SHDN1 = AGND
SHDN2 = VIN2
VOUT2 = 2.5V
VOUT2 = 1.5V
-0.4
-0.3
-0.2
-0.1
0.0
0.1
-40
-25
-10
5
20
35
50
65
80
95
110
125
Ambient Temperature (°C)
V
OUT
2
L
o
ad
Reg
u
lat
io
n
(%
)
VOUT2 = 3.3V
VIN2 = 3.6V
SHDN1 = AGND
SHDN2 = VIN2
VOUT2 = 2.6V
VOUT2 = 1.5V
200
225
250
275
300
325
350
-40 -25 -10
5
20 35 50 65 80 95 110 125
Ambient temperature (°C)
P
G
A
c
ti
ve
D
e
la
y
Ti
m
e
(m
s)
SHDN1 = VIN2
SHDN2 = VIN2
VIN = 3.6V
90
91
92
93
94
95
96
-40 -25 -10
5
20
35
50
65
80
95 110 125
Ambient Temperature (°C)
PG
Th
re
s
h
ol
d
(
%
o
fV
OUT
2
)
SHDN1 = VIN2
SHDN2 = VIN2
VIN = 3.6V
PG Threshold Hi
PG Threshold Low
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