MCP1726 Microchip Technology, MCP1726 Datasheet - Page 5

• Manufacturer Part Number: MCP1726
• Description: 1A Low Voltage / Low Quiescent Current LDO Regulator
• Manufacturer: Microchip Technology

DC CHARACTERISTICS (Continued)
© 2005 Microchip Technology Inc.
Electrical Specifications: Unless otherwise noted, V
C
Boldface type applies for junction temperatures, T
Fixed-Output Characteristics
Voltage Regulation
Dropout Characteristics
Dropout Voltage
Power Good Characteristics
Input Voltage Operating Range
for Valid PWRGD
PWRGD Threshold Voltage
(Referenced to V
PWRGD Output Voltage Low
PWRGD Leakage
PWRGD Time Delay
Detect Threshold to PWRGD
Active Time Delay
Shutdown Input
Logic-High Input
Logic-Low Input
SHDN Input Leakage Current
Note 1:
IN
= C
2:
3:
4:
5:
6:
7:
OUT
Parameters
The minimum V
V
point output voltage for the adjustable cases. V
TCV
over the temperature range. V
Load regulation is measured at a constant junction temperature using low duty-cycle pulse testing. Load
regulation is tested over a load range from 1 mA to the maximum specified output current.
Dropout voltage is defined as the input-to-output voltage differential at which the output voltage drops 2%
below its nominal value that was measured with an input voltage of V
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
mum allowable power dissipation will cause the device operating junction temperature to exceed the maxi-
mum 150°C rating. Sustained junction temperatures above 125°C can impact device reliability.
The junction temperature is approximated by soaking the device under test at an ambient temperature
equal to the desired junction temperature. The test time is small enough such that the rise in the junction
temperature over the ambient temperature is not significant.
= 4.7 µF (X7R Ceramic), T
R
is the nominal regulator output voltage for the fixed cases. V
OUT
OUT
= (V
)
OUT-HIGH
IN
must meet two conditions: V
– V
PWRGD_THR
PWRGD_THF
T
V
V
VDET-PWRGD
P
V
V
OUT-LOW
V
PWRGD_VIN
SHDN
SHDN-HIGH
WRGD
SHDN-Low
PWRGD_L
A
IN
V
Sym
T
= +25°C.
-V
OUT
OUT-LOW
PG
OUT
_
ILK
LK
) *10
6
is the lowest voltage measured over the temperature range.
J
/ (V
(Note 7) of -40°C to +125°C
2.5%
V
Min
-0.1
1.0
1.2
IN
88
89
89
90
10
45
—
—
—
—
—
—
R
R
= (V
-
* Temperature). V
IN
R
= V
R
±0.001
±0.5%
2.3V and V
+ 0.5V) or 2.3V, whichever is greater, I
Typ
220
200
300
170
0.2
0.1
ADJ *
V
92
92
94
93
30
—
—
R
((R
1
2.5%
Max
V
+0.1
/R
500
IN
6.0
6.0
0.4
96
95
98
96
—
—
55
—
—
15
R
R
2
+
)+1). Figure 4-1.
OUT-HIGH
= 1.2V, 1.8V, etc. V
V
R
IN
Units
+ 2.5%
%V
%V
mV
= V
ms
ms
µA
µA
µs
µs
%
%
%
%
V
V
V
is the highest voltage measured
IN
IN
A
R
, T
+ 0.5V.
J
Note 2
(Note 5)
T
T
I
V
V
V
V
I
V
C
C
C
V
V
V
SHDN = GND
,
I
SINK
PWRGD SINK
OUT
A
A
OUT
OUT
OUT
OUT
PWRGD
IN
IN
IN
DELAY
DELAY
DELAY
V
MCP1726
J
= +25°C
= -40°C to +125°C
A
DROPOUT.
= 2.3V to 6.0V
= 2.3V to 6.0V
= 6V, SHDN =V
). Exceeding the maxi-
R
= 100 µA
= 1A, V
< 2.5V, Falling Edge
> 2.5V, Falling Edge
< 2.5V, Rising Edge
> 2.5V, Rising Edge
is the desired set
Conditions
= OPEN
= 0.01 µF
= 0.1 µF
= V
OUT
DS21936B-page 5
IN
IN(MIN)
= 1.2 mA
= 1 mA,
= 6.0V
IN
= 2.3V
,