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參數(shù)資料
| 型號(hào)： | TC110 |
| 廠商： | Microchip Technology Inc. |
| 英文描述： | PFM/PWM Step-Up DC/DC Controller |
| 中文描述： | 烤瓷/ PWM升壓DC / DC控制器 |
| 文件頁(yè)數(shù)： | 2/16頁(yè) |
| 文件大?。?/td> | 464K |
| 代理商： | TC110 |
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TC110
DS21355B-page 2
2002 Microchip Technology Inc.
1.0
ELECTRICAL
CHARACTERISTICS
Absolute Maximum Ratings*
Voltage on V
DD
, V
OUT
, SHDN Pins ........-0.3V to +12V
EXT Output Current ...................................±100mA pk
Voltage on EXT Pin........................-0.3V to V
DD
+0.3V
Power Dissipation.............................................150mW
Operating Temperature Range.............-40°C to +85°C
Storage Temperature Range..............-40°C to +125°C
*Stresses above those listed under "Absolute Maximum
Ratings" may cause permanent damage to the device. These
are stress ratings only and functional operation of the device
at these or any other conditions above those indicated in the
operation sections of the specifications is not implied.
Exposure to Absolute Maximum Rating conditions for
extended periods may affect device reliability.
TC110 ELECTRICAL SPECIFICATIONS
Electrical Characteristics:
Note 1, V
IN
= 0.6 x V
R
, V
DD
= V
OUT
, T
A
= 25
°
C, unless otherwise noted.
Symbol
Parameter
Min
Typ
Max
Units
Test Conditions
V
DD
V
START
V
HOLD-UP
Oscillator Hold-Up Voltage
I
DD
Boost Mode Supply Current
Operating Supply Voltage
Start-Up Supply Voltage
2.0
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
255
85
V
R
x 0.975
—
—
—
—
120
130
180
50
50
70
20
20
22
11
11
11
0.05
300
100
V
R
10.0
0.9
0.7
190
200
280
90
100
120
34
35
38
20
20
22
0.5
345
115
V
R
x 1.025
92
V
V
V
μ
A
Note 2
I
OUT
= 1mA
I
OUT
= 1mA
V
OUT
= SHDN = (0.95 x V
R
); f
OSC
= 300kHz; V
R
= 3.0V
V
R
= 3.3V
V
R
= 5.0V
f
OSC
= 100kHz; V
R
= 3.0V
V
R
= 3.3V
V
R
= 5.0V
I
STBY
Standby Supply Current
μ
A
V
OUT
= SHDN = (V
R
+ 0.5V); f
OSC
= 300kHz; V
R
= 3.0V
V
R
= 3.3V
V
R
= 5.0V
f
OSC
= 100kHz; V
R
= 3.0V
V
R
= 3.3V
V
R
= 5.0V
I
SHDN
f
OSC
Shutdown Supply Current
Oscillator Frequency
μ
A
kHz
SHDN = GND, V
O
= (V
R
x 0.95)
V
OUT
= SHDN = (0.95 x V
R
); f
OSC
= 300kHz
f
OSC
= 100kHz
V
OUT
Output Voltage
V
Note 3
DTYMAX
Maximum Duty Cycle
(PWM Mode)
Duty Cycle (PFM Mode)
SHDN Input Logic High
SHDN Input Logic Low
EXT ON Resistance to V
DD
—
%
V
OUT
= SHDN = 0.95 x V
R
DTYPFM
V
IH
V
IL
REXTH
15
0.65
—
—
—
—
—
—
—
—
25
—
—
32
29
20
20
19
13
84
35
—
0.20
47
43
29
30
27
19
—
%
V
V
I
OUT
= 0mA
V
OUT
= (V
R
x 0.95)
V
OUT
= (V
R
x 0.95)
V
OUT
= SHDN = (V
R
x 0.95); V
R
= 3.0V
V
R
= 3.3V
V
R
= 5.0V
V
EXT
= (V
OUT
– 0.4V)
V
OUT
= SHDN = (V
R
x 0.95); V
R
= 3.0V
REXTL
EXT ON Resistance to GND
V
R
= 3.3V
V
R
= 5.0V
V
EXT
= 0.4V
η
Efficiency
%
Note
1:
V
R
= 3.0V, I
OUT
= 120mA
V
R
= 3.3V, I
OUT
= 130mA
V
= 5.0V, I
= 200mA
See Application Notes “Operating Mode” description for clarification.
V
R
is the factory output voltage setting.
2:
3:
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