TC1262-3.3VDBTR Datasheet, PDF (2/12 Pages) Microchip Technology – 500mA Fixed Output CMOS LDO

TC1262
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 = 100µA, C_L = 3.3µF, 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 ±0.5%
—
V Note 1
V_R – 2.5%
—
V_R + 2.5%
∆V_OUT/∆T
V_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
30
mV I_L = 100µA
—
60
130
I_L = 100mA
—
200
390
I_L = 300mA
350
650
I_L = 500mA (Note 4)
I_DD
Supply Current
—
80
130
µA I_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: TC V_OUT = (V_OUTMAX – V_OUTMIN) x 10⁶
V_OUT x ∆T
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, θ_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.
DS21373B-page 2
© 2002 Microchip Technology Inc.