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| 型号： | TC110303ECTTR |
| 厂商： | Microchip Technology |
| 文件页数： | 2/16页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BST PWM SOT23A-5 |
| 标准包装： | 3,000 |
| PWM 型： | 控制器 |
| 输出数： | 1 |
| 频率 - 最大： | 345kHz |
| 占空比： | 92% |
| 电源电压： | 2 V ~ 10 V |
| 降压： | 无 |
| 升压： | 是 |
| 回扫： | 无 |
| 反相： | 无 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 无 |
| 隔离： | 无 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | SC-74A，SOT-753 |
| 包装： | 带卷 (TR) |
TC110
1.0
ELECTRICAL
CHARACTERISTICS
*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
Absolute Maximum Ratings*
Voltage on V DD , V OUT , SHDN Pins ........ -0.3V to +12V
EXT Output Current ................................... ±100mA pk
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.
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
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
V DD
V START
Parameter
Operating Supply Voltage
Start-Up Supply Voltage
Min
2.0
—
Typ
—
—
Max
10.0
0.9
Units
V
V
Note 2
I OUT = 1mA
Test Conditions
V HOLD-UP Oscillator Hold-Up Voltage
—
—
0.7
V
I OUT = 1mA
I DD
Boost Mode Supply Current
—
120
190
μ A
V OUT = SHDN = (0.95 x V R ); f OSC = 300kHz; V R = 3.0V
—
—
—
—
—
130
180
50
50
70
200
280
90
100
120
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
—
20
34
μ A
V OUT = SHDN = (V R + 0.5V); f OSC = 300kHz; V R = 3.0V
—
—
—
—
—
20
22
11
11
11
35
38
20
20
22
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
Shutdown Supply Current
—
0.05
0.5
μ A
SHDN = GND, V O = (V R x 0.95)
f OSC
Oscillator Frequency
255
85
300
100
345
115
kHz V OUT = SHDN = (0.95 x V R ); f OSC = 300kHz
f OSC = 100kHz
V OUT
Output Voltage
V R
V R
V R
V
Note 3
x 0.975
x 1.025
DTYMAX Maximum Duty Cycle
—
—
92
%
V OUT = SHDN = 0.95 x V R
(PWM Mode)
DTYPFM Duty Cycle (PFM Mode)
15
25
35
%
I OUT = 0mA
V IH
V IL
REXTH
SHDN Input Logic High
SHDN Input Logic Low
EXT ON Resistance to V DD
0.65
—
—
—
—
32
—
0.20
47
V
V
?
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
—
—
29
20
43
29
V R = 3.3V
V EXT = (V OUT – 0.4V) V R = 5.0V
REXTL
EXT ON Resistance to GND
—
20
30
?
V OUT = SHDN = (V R x 0.95); V R = 3.0V
—
—
19
13
27
19
V R = 3.3V
V EXT = 0.4V V R = 5.0V
η
Efficiency
—
84
—
%
Note
1:
2:
3:
V R = 3.0V, I OUT = 120mA
V R = 3.3V, I OUT = 130mA
V R = 5.0V, I OUT = 200mA
See Application Notes “Operating Mode” description for clarification.
V R is the factory output voltage setting.
DS21355B-page 2
2002 Microchip Technology Inc.
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