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TC126333ECT Datenblatt(PDF) 2 Page - Microchip Technology

Teilenummer TC126333ECT
Bauteilbeschribung  PFM Step-Up DC/DC Regulators
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Hersteller  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

TC126333ECT Datenblatt(HTML) 2 Page - Microchip Technology

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TC125/TC126
DS21372B-page 2
© 2002 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 ............................................ 400mA pk
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.
TC125/TC126 ELECTRICAL SPECIFICATIONS
Electrical Characteristics: VIN =VOUT x0.6, 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
TC125/126
14
20
32
28
40
64
µA(Note 2)
VOUT =2V, IOUT =10mA
VOUT =3V, IOUT =30mA
VOUT =5V, IOUT =50mA
INL
No Load Supply Current
5
5
6
9
10
11
µAIOUT =0,VOUT =2V
VOUT =3V
VOUT =5V
ISTBY
Standby Supply Current
2
3
3
4
5
5
µAVIN =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
VLX =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
η
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.
3:
VDD input tied to SENSE input for TC126, as shown in Figure 3-2.
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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