TC1268 MICROCHIP [Microchip Technology], TC1268 Datasheet - Page 2

• Manufacturer Part Number: TC1268
• Description: 500mA Fixed Output, Fast Response CMOS LDO with Shutdown
• Manufacturer: MICROCHIP [Microchip Technology]

TC1268
1.0
Absolute Maximum Ratings*
Input Voltage .........................................................6.5V
Power Dissipation................Internally Limited (Note 6)
Maximum Voltage on Any Pin ........ V
Operating Temperature ............... -40°C < T
Storage Temperature.......................... -65°C to +150°C
TC1268 ELECTRICAL SPECIFICATIONS
DS21379B-page 2
Electrical Characteristics: V
type specifications apply for junction temperatures of -40°C to +125°C.
V
I
V
∆V
∆V
∆V
V
I
I
T
T
PSRR
I
∆V
eN
SHDN Input
V
V
Note 1:
OUT
DD
SHDN
OUT
S
WK
IN
OUT
IN
IH
IL
Symbol
OUT
OUT
OUT
OUT
-V
MAX
SC
OUT
2:
3:
4:
5:
6:
7:
8:
/V
/∆T
/∆V
/∆P
OUT
ELECTRICAL
CHARACTERISTICS
IN
D
V
T
Regulation is measured at a constant junction temperature using low duty cycle pulse testing. Load regulation is tested over a load range from
0.1mA to the maximum specified output current. Changes in output voltage due to heating effects are covered by the thermal regulation
specification.
Dropout voltage is defined as the input to output differential at which the output voltage drops 2% below its nominal value measured at a 1V
differential.
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
The maximum allowable power dissipation is a function of ambient temperature, the maximum allowable junction temperature and the
thermal resistance from junction-to-air (i.e., T
thermal shutdown. Please see Section 4.0 Thermal Considerations for more details.
Hysteresis voltage is referenced to V
The minimum V
C
R
V
is the regulator output voltage setting.
OUT
Input Operating Voltage
Maximum Output Current
Output Voltage
V
Line Regulation
Load Regulation
Dropout Voltage
Supply Current (Active Mode)
Supply Current (Shutdown Mode)
Wake-up Time
(from Shutdown Mode)
Settling Time
(from Shutdown Mode)
Power Supply Rejection Ratio
Output Short Circuit Current
Thermal Regulation
Output Noise
SHDN Input High Threshold
SHDN Input Low Threshold
OUT
= (V
Temperature Coefficient
OUT
IN
MAX
has to justify the conditions: V
V
OUT
Parameter
– V
IN
OUT
x ∆T
= V
MIN
OUT
) x 10
+ 1V, I
IN
6
R
.
+0.3V to -0.3V
L
J
= 100µA, C
A
< +125°C
, T
IN
J
, θ
V
≥ V
R
JA
Min
500
). Exceeding the maximum allowable power dissipation causes the device to initiate
– 2.5%
2.7
R
45
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
L
+ V
= 3.3µF, SHDN > V
DROPOUT
V
R
0.002
1200
0.05
0.04
Typ
200
350
260
±0.5%
40
20
60
80
15
64
*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.
—
—
—
—
—
L
5
5
and V
MAX
at V
IN
IN
≥ 2.7V for I
V
R
= 6V for T = 10 msec.
IH
1400
Max
0.35
0.01
+ 2.5%
160
480
800
130
6.0
, T
30
10
15
—
—
—
—
—
—
—
—
—
A
= 25°C, unless otherwise noted. Boldface
L
= 0.1mA to I
ppm/°C Note 2
nV/√Hz
%/mA
Units
%V
%V
µsec
µsec
V/W
mA
mV
mA
µA
µA
dB
%
V
V
IN
IN
©
2002 Microchip Technology Inc.
OUT
Note 8
Note 1
(V
I
I
I
I
I
SHDN = V
SHDN = 0V
V
C
I
V
C
I
F
V
Note 5
I
L
L
L
L
L
L
L
L
IN
IN
RE
OUT
IN
IN
= 0.1mA to I
R
= 100µA
= 100mA
= 300mA
= 500mA (Note 4)
= 250mA (See Figure 3-2)
= 250mA (See Figure 3-2)
= I
MAX
= 3.5V, V
= C
= 3.5V, V
= C
+ 1V) ≤ V
≤ 1kHz
OUT
.
= 0V
Test Conditions
OUT
OUT
MAX
IH
, I
= 1µF
= 1µF
OUT
OUT
IN
OUT
L
≤ 6V
= 0
= 2.5V
= 2.5V
MAX
(Note 3)