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参数资料
| 型号： | TC105333ECTTR |
| 元件分类： | 稳压器 |
| 英文描述： | 0.1 A SWITCHING CONTROLLER, 345 kHz SWITCHING FREQ-MAX, PDSO5 |
| 封装： | EIAJ, SC-74A, SOT-23A, 5 PIN |
| 文件页数： | 7/14页 |
| 文件大小： | 433K |
| 代理商： | TC105333ECTTR |
TC105
DS21349B-page 2
2002 Microchip Technology Inc.
1.0
ELECTRICAL
CHARACTERISTICS
Absolute Maximum Ratings*
Voltage on VDD....................................... -0.3V to +12V
EXT Output Current ........................................±100mA
Voltage on VOUT,EXT,
SHDN Pins .....................................-0.3V to VDD +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.
TC105 ELECTRICAL SPECIFICATIONS
Electrical Characteristics: Note 1, fOSC =300 kHz; TA = 25°C, unless otherwise noted.
Symbol
Parameter
Min
Typ
Max
Units
Test Conditions
VDD
Operating Supply Voltage
2.2
—
10.0
V
VDDMIN
Minimum Input Voltage
0.9
—
2.2
V
EXT = High; No external components;
VOUT = 0V, SHDN =VIN
IDD
Operating Supply Current
—
57
67
102
122
A
No external components; VR =3.0V, 3.3V
VOUT = 0V, SHDN =VIN VR =5.0V
ISTBY
Standby Supply Current
—
15
16
27
29
A
No external components; VR =3.0V, 3.3V
VOUT =SHDN =VIN
VR =5.0V
ISHDN
Shutdown Supply Current
—
0.5
A
SHDN =GND
fOSC
Oscillator Frequency
255
300
345
kHz
VIN =VOUT +0.3V
VOUT
Output Voltage
VR x0.975
VR
VR x1.025
Note 2
DTYMAX Maximum Duty Cycle (PWM Mode)
100
—
%
DTYPFM
Duty Cycle (PFM Mode)
15
25
35
%
IOUT =0mA
VIH
SHDN Input Logic High
0.65
—
V
VOUT = 0V, No external components
VIL
SHDN Input Logic Low
—
0.20
V
VOUT = 0V, No external components
REXTH
EXT ON Resistance to VDD
—
17
16
12
24
22
17
No external components; VR =3.0V
VR =3.3V
VR =5.0V
VOUT = SHDN =VIN,VEXT =(VIN –0.4V)
REXTL
EXT ON Resistance to GND
—
15
14
10
20
19
14
No external components; VR =3.0V
VR =3.3V
VR =5.0V
VOUT = 0V, SHDN =VIN,VEXT =0.4V
η
Efficiency
—
92
—
%
Note
1:
VR =3.0V, VIN =4.5V, IOUT = 200mA
VR =3.3V, VIN =5.0V, IOUT = 220mA
VR =5.0V, VIN =7.5V, IOUT = 320mA
2:
VR is the factory output voltage setting.
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