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參數(shù)資料
| 型號(hào)： | TC1265 |
| 廠商： | Microchip Technology Inc. |
| 英文描述： | 800 mA Fixed-Output CMOS LDO with Shutdown |
| 中文描述： | 800毫安固定輸出CMOS低壓帶有關(guān)斷 |
| 文件頁數(shù)： | 2/16頁 |
| 文件大小： | 262K |
| 代理商： | TC1265 |
TC1265
DS21376C-page 2
2004 Microchip Technology Inc.
1.0
ELECTRICAL
CHARACTERISTICS
Absolute Maximum Ratings
Input Voltage .........................................................6.5V
Output Voltage..................(V
SS
– 0.3V) to (V
IN
+ 0.3V)
Power Dissipation................Internally Limited
(Note 7)
Maximum Voltage on Any Pin ........V
IN
+0.3V to -0.3V
Operating Temperature Range......-40°C < T
J
< 125°C
Storage Temperature..........................-65°C to +150°C
Notice:
Stresses above those listed under "Maximum
Ratings" may cause permanent damage to the device. This is
a stress rating only and functional operation of the device at
those or any other conditions above those indicated in the
operation listings of this specification is not implied. Exposure
to maximum rating conditions for extended periods may affect
device reliability.
DC CHARACTERISTICS
Electrical Specifications:
Unless otherwise indicated, V
IN
= V
R
+ 1.5V,
(Note 1)
, I
L
= 100 μA, C
L
= 3.3 μF,
SHDN > V
IH
, T
A
= +25°C.
Boldface
type specifications apply for junction temperatures of -40°C to +125°C.
Parameters
Sym
Min
Typ
Max
Units
Conditions
Input Operating Voltage
V
IN
2.7
—
6.0
V
Note 2
Maximum Output Current
I
OUTMAX
V
OUT
800
—
—
mA
Output Voltage
V
R
– 2.5%
V
R
– 2%
—
V
R
± 0.5%
V
R
± 0.5%
40
V
R
+ 2.5%
V
R
+ 3%
—
V
V
R
≥
2.5V
V
R
= 1.8V
Note 3
V
OUT
Temperature Coefficient
Line Regulation
V
OUT
/
T
V
OUT
/
V
IN
V
OUT
/V
OUT
V
IN
–V
OUT
ppm/°C
—
0.007
0.35
%
(V
R
+ 1V)
≤
V
IN
≤
6V
I
L
= 0.1 mA to I
OUTMAX
V
R
≥
2.5V, I
L
= 100 μA
Load Regulation
(Note 4)
-0.01
0.002
+0.01
%/mA
Dropout Voltage
(Note 5)
—
20
30
mV
—
50
160
I
L
= 100 mA
I
L
= 300 mA
I
L
= 500 mA
I
L
= 800 mA
—
150
480
—
260
800
—
450
1300
—
700
1000
V
R
= 1.8V, I
L
= 500 mA
—
890
1400
I
L
= 800 mA
Supply Current
I
DD
I
SHDN
PSRR
—
80
130
μA
SHDN = V
IH
, I
L
= 0
SHDN = 0V
Shutdown Supply Current
—
0.05
1
μA
Power Supply Rejection Ratio
—
64
—
db
F
≤
1 kHz
Output Short Circuit Current
I
OUTSC
V
OUT
/
P
D
eN
—
1200
1400
mA
V
OUT
= 0V
Note 6
Thermal Regulation
—
0.04
—
V/W
Output Noise
—
260
—
nV/
√
Hz
I
L
= I
OUTMAX
, F = 10 kH
Z
Note
1:
V
R
is the regulator output voltage setting.
2:
The minimum V
IN
has to justify the conditions: V
IN
≥
V
R
+ V
DROPOUT
and V
IN
≥
2.7V for I
L
= 0.1 mA to I
OUTMAX
.
3:
TCV
OUT
V
OUT
T
×
4:
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.
5:
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.
6:
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 I
LMAX
at V
IN
= 6V for T = 10 ms.
7:
The maximum allowable power dissipation is a function of ambient temperature, the maximum allowable junction temper-
ature and the thermal resistance from junction-to-air (i.e., T
A
, T
J
,
θ
JA
). Exceeding the maximum allowable power dissipa-
tion causes the device to initiate thermal shutdown. Please see
Section 5.0 “Thermal Considerations”
for more details.
8:
Hysteresis voltage is referenced to V
R
.
---------------------------–
(
)
10
6
–
=
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