TC1303C-1A1EMF
| Model | TC1303C-1A1EMF |
| Description | 0.5 A SWITCHING REGULATOR, 2400 kHz SWITCHING FREQ-MAX, PDSO10, 3 X 3 MM, 0.9 MM HEIGHT, PLASTIC, DFN-10 |
| PDF file | Total 38 pages (File size: 756K) |
| Chip Manufacturer | MICROCHIP |
TC1303A/TC1303B/TC1303C/TC1304
2.0
Note:
TYPICAL PERFORMANCE CURVES
The graphs and tables provided following this note are a statistical summary based on a limited number of
samples and are provided for informational purposes only. The performance characteristics listed herein
are not tested or guaranteed. In some graphs or tables, the data presented may be outside the specified
operating range (e.g., outside specified power supply range) and therefore outside the warranted range.
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.
80
I
Q
Switcher and LDO (µA)
76
V
IN
= 5.5V
I
OUT1
= I
OUT2
= 0 mA
SHDN1 = V
IN2
SHDN2 = V
IN2
55
50
I
Q
LDO (µA)
45
I
OUT2
= 0 mA
V
IN
= 5.5V
72
68
64
60
-40 -25 -10
5
V
IN
= 4.2V
V
IN
= 4.2V
V
IN
= 3.6V
40
35
30
SHDN1 = A
GND
SHDN2 = V
IN2
V
IN
= 3.6V
20 35 50 65 80 95 110 125
-40 -25 -10
5
20 35 50 65 80 95 110 125
Ambient Temperature (°C)
Ambient Temperature (°C)
FIGURE 2-1:
I
Q
Switcher and LDO
Current vs. Ambient Temperature (TC1303A,B).
78
I
Q
Switcher and LDO (µA)
76
74
72
70
68
66
-40 -25 -10
5
20 35 50 65 80 95 110 125
Ambient Temperature (°C)
SHDN1 = V
IN2
SHDN2 = V
IN2
V
IN
= 5.5V
FIGURE 2-4:
Temperature.
100
95
90
85
80
75
70
65
60
55
50
2.7
I
Q
LDO Current vs. Ambient
V
OUT1
Efficiency (%)
I
OUT1
= 100 mA
SHDN1 = V
IN2
SHDN2 = A
GND
V
IN
= 4.2V
V
IN
= 3.6V
I
OUT1
= 250 mA
I
OUT1
= 500 mA
3.05
3.4
3.75
4.1
4.45
4.8
5.15
5.5
Input Voltage (V)
FIGURE 2-2:
I
Q
Switcher and LDO
Current vs. Ambient Temperature
(TC1303C, TC1304).
55
50
45
40
V
IN
= 4.2V
SHDN1 = V
IN2
SHDN2 = A
GND
FIGURE 2-5:
V
OUT1
Output Efficiency vs.
Input Voltage (V
OUT1
= 1.2V).
I
OUT1
= 0 mA
100
V
OUT1
Efficiency(%)
95
90
85
80
75
70
0.005
V
IN
= 5.5V
SHDN1 = V
IN2
SHDN2 = A
GND
I
Q
Switcher (µA)
V
IN1
= 3.6V
V
IN1
= 4.2V
V
IN1
= 3.0V
35
30
-40 -25 -10
5
V
IN
= 3.6V
20 35 50 65 80 95 110 125
0.104
0.203
0.302
0.401
0.5
Ambient Temperature (°C)
I
OUT1
(A)
FIGURE 2-3:
I
Q
Switcher Current vs.
Ambient Temperature.
FIGURE 2-6:
V
OUT1
Output Efficiency vs.
I
OUT1
(V
OUT1
= 1.2V).
©
2008 Microchip Technology Inc.
DS21949C-page 11
