TC1269_13 Datasheet, PDF (2/12 Pages) Microchip Technology – 300mA CMOS LDO with Shutdown and VREF Bypass

TC1269
1.0 ELECTRICAL
CHARACTERISTICS
Absolute Maximum Ratings*
Input Voltage .........................................................6.5V
Output Voltage.................... (V_SS – 0.3) to (V_IN + 0.3V)
Maximum Voltage on Any Pin ........V_IN +0.3V to -0.3V
Power Dissipation................Internally Limited (Note 6)
Operating Temperature ............... -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.
TC1269 ELECTRICAL SPECIFICATIONS
Electrical Characteristics: V_IN = V_OUT + 1V, I_L = 0.1A, C_L = 3.3F, SHDN > V_IH, 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
I_OUTMAX
V_OUT
V_OUT/T
V_OUT/V_IN
V_OUT/V_OUT
V_IN-V_OUT
I_SS1
I_SS2
PSRR
I_OUTSC
V_OUT/P_D
eN
Input Operating Voltage
Maximum Output Current
Output Voltage
V_OUT Temperature Coefficient
Line Regulation
Load Regulation
Dropout Voltage
Supply Current
Shutdown Supply Current
Power Supply Rejection Ratio
Output Short Circuit Current
Thermal Regulation
Output Noise
—
300
—
V_R – 2.5%
—
—
—
—
—
—
—
—
—
—
—
—
—
6.0
V
—
—
mA
V_R ±0.5%
—
V Note 1
—
V_R + 2.5%
40
—
ppm/°C Note 2
0.05
0.5
20
80
240
50
0.05
0.35
2.0
30
160
480
90
0.5
% (V_R + 1V) V_IN6V
% I_L = 0.1mA to I_OUTMAX
mV I_L = 0.1mA
I_L = 100mA
I_L = 300mA (Note 4)
A SHDN = V_IH
A SHDN = 0V
50
550
0.04
—
dB F_RE 120Hz
650
mA V_OUT = 0V
—
V/W Note 5
260
—
nV/Hz F = 1kHz, C_OUT = 1F, R_LOAD = 50
SHDN Input
V_IH
V_IL
Note 1:
2:
3:
4:
5:
6:
SHDN Input High Threshold
45
—
—
%V_IN
SHDN Input Low Threshold
—
—
15
%V_IN
V_R
T_C
is the regulator output voltage
V_OUT = (V_OUTMAX – V_OUTMIN) x
setting.
10⁶
V_OUT x 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 specifica-
tion.
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 differen-
tial.
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.
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.
DS21380C-page 2
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