TC1264_06 Datasheet, PDF (2/18 Pages) Microchip Technology – 800 mA Fixed-Output CMOS LDO with Shutdown

TC1264
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 8)
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
Maximum Output Current
Output Voltage
V_IN
I_OUTMAX
V_OUT
2.7
—
6.0
V Note 2
800
—
—
mA
V_R – 2.5% V_R ± 0.5% V_R + 2.5%
V
V_R ≥ 2.5V
V_R – 2% V_R ± 0.5% V_R + 3%
V_R = 1.8V
V_R – 7%
—
V_R + 3%
I_L = 0.1 mA to 800 mA
(Note 3)
V_OUT Temperature Coefficient
Line Regulation
Load Regulation (Note 5)
Dropout Voltage (Note 6)
Supply Current
Power Supply Rejection Ratio
ΔV_OUT/ΔT
ΔV_OUT/ΔV_IN
ΔV_OUT/V_OUT
V_IN–V_OUT
I_DD
PSRR
—
—
-0.01
—
—
—
—
—
—
—
—
—
40
0.007
0.002
20
50
150
260
450
1000
1200
80
64
—
0.35
0
30
160
480
800
1300
1200
1400
130
—
ppm/°C Note 4
%
%/mA
mV
µA
db
(V_R + 1V) ≤ V_IN ≤ 6V
I_L = 0.1 mA to I_OUTMAX
V_R ≥ 2.5V, I_L = 100 µA
V_R ≥ 2.5V, I_L = 100 mA
V_R ≥ 2.5V, I_L = 300 mA
V_R ≥ 2.5V, I_L = 500 mA
V_R ≥ 2.5V, I_L = 800 mA
V_R = 1.8V, I_L = 500 mA
I_L = 800 mA
SHDN = V_IH, I_L = 0
F ≤ 1 kHz
Output Short Circuit Current
I_OUTSC
—
1200
—
mA V_OUT = 0V
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: This accuracy represents the worst-case over the entire output current and temperature range.
4:
TCV_OUT
=
-⁽--^V----^O----^U---^T---^M-----^A---^X----–-----^V---^O----^U----^T---^M----^I--^N----⁾---–-----1---0---⁶-
V_OUT × ΔT
5: 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.
6: 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.
7: 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.
8: The maximum allowable power dissipation is a function of ambient temperature, the maximum allowable junction tem-
perature and the thermal resistance from junction-to-air (i.e., T_A, T_J, θ_JA). Exceeding the maximum allowable power dis-
sipation causes the device to initiate thermal shutdown. Please see Section 5.0 “Thermal Considerations” for more
details..
DS21375C-page 2
© 2006 Microchip Technology Inc.