Datasheet

 2010 Microchip Technology Inc. DS22051D-page 3
MCP1801
1.0 ELECTRICAL
CHARACTERISTICS
Absolute Maximum Ratings †
Input Voltage ................................................................. +12V
Output Current (Continuous) ..................... P
D
/(V
IN
-V
OUT
)mA
Output Current (Peak) ............................................... 500 mA
Output Voltage ............................... (V
SS
-0.3V) to (V
IN
+0.3V)
SHDN
Voltage..................................(V
SS
-0.3V) to (V
IN
+0.3V)
Continuous Power Dissipation:
SOT-23-5 .............................................................. 250 mW
† 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 operational listings of this specification
is not implied. Exposure to maximum rating conditions
for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
Electrical Specifications: Unless otherwise specified, all limits are established for V
IN
= V
R
+ 1.0V, Note 1, C
OUT
= 1 µF (X7R),
C
IN
= 1 µF (X7R), V
SHDN
= V
IN
, T
A
= +25°C.
Parameters Sym Min Typ Max Units Conditions
Input / Output Characteristics
Input Operating Voltage V
IN
2.0 — 10.0 V Note 1
Input Quiescent Current I
q
—2550 µAI
L
= 0 mA
Shutdown Current I
SHDN
— 0.01 0.10 µA SHDN = 0V
Maximum Output Current I
OUT_mA
150 — — mA
Current Limiter I
LIMIT
—300— mAif V
R
 1.75V, then V
IN
= V
R
+ 2.0V
Output Short Circuit Current I
OUT_SC
—50— mAif V
R
 1.75V, then V
IN
= V
R
+ 2.0V
Output Voltage Regulation V
OUT
V
R
-2.0% V
R
V
R
+2.0% V V
R
 1.45V, I
OUT
= 30 mA, Note 2
V
R
-30 mV V
R
V
R
+30 mV V
R
 1.45V, I
OUT
= 30 mA
V
OUT
Temperature Coeffi-
cient
TCV
OUT
— 100 — ppm/°C I
OUT
= 30 mA, -40°C T
A
+85°C,
Note 3
Line Regulation V
OUT
/
(V
OUT
XV
IN
)
-0.2 ±0.01 +0.2 %/V (V
R
+ 1V) V
IN
10V, Note 1
V
R
 1.75V, I
OUT
= 30 mA
V
R
 1.75V, I
OUT
= 10 mA
Load Regulation
V
OUT
/V
OUT
—1550 mVI
L
= 1.0 mA to 100 mA, Note 4
Dropout Voltage, Note 5 V
DROPOUT
—6090 mVI
L
= 30 mA, 3.1V V
R
 6.0V
—200250 I
L
= 100 mA, 3.1V V
R
 6.0V
—80120 I
L
= 30 mA, 2.0V V
R
 3.1V
—240350 I
L
= 100 mA, 2.0V V
R
< 3.1V
— 2.07 - V
R
2.10 - V
R
VI
L
= 30 mA, V
R
 2.0V
— 2.23 - V
R
2.33 - V
R
I
L
= 100 mA, V
R
< 2.0V
Power Supply Ripple
Rejection Ratio
PSRR — 70 — dB f = 10 kHz, I
L
= 50 mA,
V
INAC
= 1V pk-pk, C
IN
= 0 µF,
if V
R
 1.5V, then V
IN
= 2.5V
Output Noise e
N
—0.6—µV/Hz I
OUT
=100 mA, f=1 kHz,
C
OUT
=1 µF (X7R Ceramic),
V
OUT
=3.3V
Note 1: The minimum V
IN
must meet two conditions: V
IN
2.0V and V
IN
(V
R
+ 1.0V).
2: V
R
is the nominal regulator output voltage. For example: V
R
= 1.8V, 2.5V, 3.0V, 3.3V, or 5.0V.
The input voltage V
IN
= V
R
+ 1.0V or Vi
IN
= 2.0V (whichever is greater); I
OUT
= 100 µA.
3: TCV
OUT
= (V
OUT-HIGH
- V
OUT-LOW
) *10
6
/ (V
R
* Temperature), V
OUT-HIGH
= highest voltage measured over the
temperature range. V
OUT-LOW
= lowest voltage measured over the temperature range.
4: Load regulation is measured at a constant junction temperature using low duty cycle pulse testing. Changes in output
voltage due to heating effects are determined using thermal regulation specification TCV
OUT
.
5: Dropout voltage is defined as the input to output differential at which the output voltage drops 2% below its measured
value with an applied input voltage of V
R
+ 1.0V or 2.0V, whichever is greater.