![](http://datasheet.mmic.net.cn/110000/TC1303A-1B2EUN_datasheet_3509237/TC1303A-1B2EUN_13.png)
2008 Microchip Technology Inc.
DS21949C-page 13
TC1303A/TC1303B/TC1303C/TC1304
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 2-13:
VOUT1 vs. IOUT1
(VOUT1 = 3.3V).
FIGURE 2-14:
VOUT1 Switching Frequency
vs. Input Voltage.
FIGURE 2-15:
VOUT1 Switching Frequency
vs. Ambient Temperature.
FIGURE 2-16:
VOUT1 Adjustable Feedback
Voltage vs. Ambient Temperature.
FIGURE 2-17:
VOUT1 Switch Resistance
vs. Input Voltage.
FIGURE 2-18:
VOUT1 Switch Resistance
vs. Ambient Temperature.
3.2
3.24
3.28
3.32
3.36
3.4
0.005
0.104
0.203
0.302
0.401
0.5
IOUT1 (A)
V
OU
T
1(V
)
SHDN1 = VIN2
SHDN2 = AGND
VIN1 = 4.2V
1.90
1.95
2.00
2.05
2.10
2.15
2.20
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
Input Voltage (V)
V
OUT1
Frequency
(M
Hz)
SHDN1 = VIN2
SHDN2 = AGND
1.90
1.92
1.94
1.96
1.98
2.00
-4
0
-2
5
-1
0
5
20
35
50
65
80
95
11
0
12
5
Ambient Temperature (°C)
V
OUT1
Frequency
(MHz)
SHDN1 = VIN2
SHDN2 = AGND
0.790
0.795
0.800
0.805
0.810
0.815
0.820
-40
-25
-10
5
20
35
50
65
80
95
110
125
Ambient Temperature (°C)
V
OU
T
1FB
Vol
tage
(V)
SHDN1 = VIN2
SHDN2 = AGND
VIN1 = 3.6V
0.3
0.35
0.4
0.45
0.5
0.55
0.6
3.3 3.5 3.7 3.9 4.1 4.3 4.5 4.7 4.9 5.1 5.3 5.5
Input Voltage (V)
V
OUT1
Switch
Resistance
()
SHDN1 = VIN2
SHDN2 = AGND
TA = 25 °C
N-Channel
P-Channel
0.3
0.35
0.4
0.45
0.5
0.55
0.6
0.65
-40 -25 -10 5
20 35 50 65 80 95 110 125
Ambient Temperature (°C)
V
OUT1
Switch
Resistance
()
SHDN1 = VIN2
SHDN2 = AGND
VIN1 = 3.6V
N-Channel
P-Channel