TC1262
DS21373C-page 2 2002-2012 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 6)
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
*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.
TC1262 ELECTRICAL SPECIFICATIONS
Electrical Characteristics: V
IN
= V
OUT
+ 1V, I
L
= 100A, C
L
= 3.3F, T
A
= 25°C, unless otherwise noted. Boldface type
specifications apply for junction temperatures of -40°C to +125°C.
Symbol Parameter Min Typ Max Units Test Conditions
V
IN
Input Operating Voltage 2.7 — 6.0 V Note 7
I
OUTMAX
Maximum Output Current 500 ——mA
V
OUT
Output Voltage —
V
R
– 2.5%
V
R
±0.5%
—
—
V
R
+ 2.5%
V Note 1
V
OUT
/TV
OUT
Temperature Coefficient — 40 — ppm/°C Note 2
V
OUT
/V
IN
Line Regulation — .003 0.35 %/V (V
R
+ 1V) V
IN
6V
V
OUT
/V
OUT
Load Regulation — 0.002 0.01 %/mA I
L
= 0.1mA to I
OUTMAX
(Note 3)
V
IN
-V
OUT
Dropout Voltage —
—
—
20
60
200
350
30
130
390
650
mV I
L
= 100A
I
L
= 100mA
I
L
= 300mA
I
L
= 500mA (Note 4)
I
DD
Supply Current — 80 130 AI
L
= 0
PSRR Power Supply Rejection Ratio — 64 — dB F
RE
1kHz
I
OUTSC
Output Short Circuit Current — 1200 — mA V
OUT
= 0V
V
OUT
/P
D
Thermal Regulation — 0.04 — V/W Note 5
eN Output Noise — 260 — nV/Hz
I
L
= I
OUTMAX
, F
RE
= 10kHz
Note 1: V
R
is the regulator output voltage setting.
2:
3: 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.
4: 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.
5: 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 msec.
6: 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
A
, T
J
,
JA
). Exceeding the maximum allowable power dissipation causes the device to initiate
thermal shutdown. Please see Section 4.0 Thermal Considerations for more details.
7: The minimum V
IN
has to justify the conditions: V
IN
V
R
+ V
DROPOUT
and V
IN
2.7V for I
L
= 0.1mA to I
OUTMAX
.
TC V
OUT
= (V
OUTMAX
– V
OUTMIN
) x 10
6
V
OUT
x T
