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参数资料
| 型号： | TC126331ECT |
| 元件分类： | 稳压器 |
| 英文描述： | 0.4 A SWITCHING REGULATOR, 115 kHz SWITCHING FREQ-MAX, PDSO5 |
| 封装： | EIAJ, SC-74A, SOT-23A, 5 PIN |
| 文件页数： | 5/12页 |
| 文件大小： | 524K |
| 代理商： | TC126331ECT |
TC125/TC126
DS21372D-page 2
2007 Microchip Technology Inc.
1.0
ELECTRICAL
CHARACTERISTICS
Absolute Maximum Ratings*
Voltage on VDD, SENSE/VDD, LX, SHDN Pins
....................................................... -0.3V to +12V
LX Sink Current ........................................... 400 mA pk
Power Dissipation............................................150 mW
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.
TC125/TC126 ELECTRICAL SPECIFICATIONS
Electrical Characteristics: VIN = VOUT x 0.6, TA = 25°C, SHDN = VOUT (TC125), unless otherwise noted.
Symbol
Parameter
Min
Typ
Max
Units
Test Conditions
VOUT
Output Voltage
VR – 2.5% VR ± 0.5% VR + 2.5%
V
VDD
Operating Supply Voltage
0.70
—
10.0
V
Note 4
VSTART Start-Up Supply Voltage
—
0.80
0.90
V
IOUT = 1mA
IDD
Operating Supply Current
TC125
TC125/126
—
14
20
32
28
40
64
μA (Note 2)
VOUT = 2V, IOUT = 10 mA
VOUT = 3V, IOUT = 30 mA
VOUT = 5V, IOUT = 50 mA
INL
No Load Supply Current
—
5
6
9
10
11
μAIOUT = 0, VOUT = 2V
VOUT = 3V
VOUT = 5V
ISTBY
Standby Supply Current
—
2
3
4
5
μA VIN = VOUT + 0.5V, VIN = 2V
VIN = 3V
VIN = 5V
Ishdn
Shutdown Supply Current
—
0.5
μA SHDN = VIL, (Note 2)
RLX(ON) LX Pin ON Resistance
—
10
6
3
14
8
5
WVLX = 0.4V, VOUT = 2V
VOUT = 3V
VOUT = 5V
(Note 2), (Note 3)
ILX
LX Pin Leakage Current
—
1
μA No external components,
VOUT = VLX = 10V
DCYCLE Duty Cycle
70
75
80
%
Measured at LX pin (Note 2)
fMAX
Maximum Oscillator Frequency
85
100
115
kHz Note 2
VLXLIM LX Pin Limit Voltage
0.7
—
1.1
V
Note 2
h
Efficiency
—
70
80
85
—
%VOUT = 2V
VOUT = 3V
VOUT = 5V
VIH
SHDN Input Logic High
0.75
—
V
VIL
SHDN Input Logic Low
—
0.20
V
IINh
SHDN Input Current (High)
—
0.25
μA
IINl
SHDN Pin Input Current (Low)
-0.25
—
μA
Note 1: VR is the factory output voltage setting.
2: VIN = VOUT x 0.95.
4: The VPS input of the TC125 must be operated between 2.0V and 10.0V for spec compliance.
The VDD input of the TC126 must be operated between 2.2V and 10.0V for spec compliance.
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