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TC1264-3.3VDBTR Datenblatt(PDF) 3 Page - Microchip Technology

Teilenummer TC1264-3.3VDBTR
Bauteilbeschribung  800 mA Fixed-Output CMOS LDO with Shutdown
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© 2006 Microchip Technology Inc.
DS21375C-page 3
TC1264
Thermal Regulation
ΔVOUT/ΔPD
—0.04
V/W
Note 7
Output Noise
eN
260
nV/
√Hz IL = IOUTMAX, F = 10 kHZ
DC CHARACTERISTICS (CONTINUED)
Electrical Specifications: Unless otherwise indicated, VIN = VR + 1.5V, (Note 1), IL = 100 µA, CL = 3.3 µF, SHDN > VIH,
TA = +25°C. Boldface type specifications apply for junction temperatures of -40°C to +125°C.
Parameters
Sym
Min
Typ
Max
Units
Conditions
Note 1:
VR is the regulator output voltage setting.
2: The minimum VIN has to justify the conditions: VIN ≥ VR + VDROPOUT and VIN ≥ 2.7V for IL = 0.1 mA to IOUTMAX.
3:
This accuracy represents the worst-case over the entire output current and temperature range.
4:
5:
Regulation is measured at a constant junction temperature using low duty cycle pulse testing. Load regulation is tested
over a load range from 0.1 mA to the maximum specified output current. Changes in output voltage due to heating
effects are covered by the thermal regulation specification.
6:
Dropout voltage is defined as the input-to-output differential at which the output voltage drops 2% below its nominal
value measured at a 1.5V differential.
7:
Thermal regulation is defined as the change in output voltage at a time T after a change in power dissipation is applied,
excluding load or line regulation effects. Specifications are for a current pulse equal to ILMAX at VIN = 6V for T = 10 ms.
8:
The maximum allowable power dissipation is a function of ambient temperature, the maximum allowable junction tem-
perature and the thermal resistance from junction-to-air (i.e., TA, TJ, θJA). Exceeding the maximum allowable power dis-
sipation causes the device to initiate thermal shutdown. Please see Section 5.0 “Thermal Considerations” for more
details..
TCVOUT
VOUTMAX VOUTMIN
() 10
6
VOUT
T
Δ
×
-------------------------------------------------------------------------
=
TEMPERATURE CHARACTERISTICS
Electrical Specifications: Unless otherwise indicated, VIN = VR + 1.5V, IL = 100 µA, CL = 3.3 µF, SHDN > VIH, TA = +25°C.
Parameters
Sym
Min
Typ
Max
Units
Conditions
Temperature Ranges
Specified Temperature Range
TA
-40
+125
°C
(Note 1)
Operating Temperature Range
TJ
-40
+125
°C
Storage Temperature Range
TA
-65
+150
°C
Thermal Package Resistances
Thermal Resistance, 3L-SOT-223
θJA
—59
°C/W
Thermal Resistance, 3L-DDPAK
θJA
—71
°C/W
Thermal Resistance, 3L-TO-220
θJA
—71
°C/W
Note 1:
Operation in this range must not cause TJ to exceed Maximum Junction Temperature (+125°C).


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