Datasheet

MCP1754/MCP1754S
DS20002276C-page 6 2011-2013 Microchip Technology Inc.
Line Regulation V
OUT
/
(V
OUT
x V
IN
)
-0.05 ±0.01 +0.05 %/V V
R
+1V V
IN
16V
Load Regulation V
OUT
/V
OUT
-1.1 -0.4 0 %I
L
= 1.0 mA to 150 mA, Note 4
Dropout Voltage (Note 5)V
DROPOUT
—300500 mV I
L
= 150 mA
Dropout Current I
DO
—5085 µA V
IN
= 0.95V
R
, I
OUT
= 0 mA
Undervoltage Lockout
Undervoltage Lockout UVLO 2.95 V Rising V
IN
Undervoltage Lockout
Hysteresis
UVLO
HYS
285 mV Falling V
IN
Shutdown Input
Logic High Input V
SHDN-HIGH
2.4 —V
IN(MAX)
V
Logic Low Input V
SHDN-LOW
0.0 0.8 V
Shutdown Input Leakage
Current
SHDN
ILK
0.100 0.500 µA SHDN = GND
0.500 2.0 S
HDN = 16V
Power Good Output
PWRGD Input Voltage
Operating Range
V
PWRGD_VIN
1.7 —V
IN
VI
SINK
= 1 mA
PWRGD Threshold Voltage
(Referenced to V
OUT
)
V
PWRGD_TH
90 92 94 %V
OUT
Falling Edge of V
OUT
PWRGD Threshold
Hysteresis
V
PWRGD_HYS
—2.0 %V
OUT
Rising Edge of V
OUT
PWRGD Output Voltage Low V
PWRGD_L
—0.20.6 VI
PWRGD_SINK
= 5.0 mA,
V
OUT
= 0V
PWRGD Output Sink
Current
I
PWRGD_L
5.0 ——mAV
PWRGD
0.4V
PWRGD Leakage Current I
PWRGD_LK
—40700 nA V
PWRGD
Pullup = 10 k to V
IN,
V
IN
= 16V
PWRGD Time Delay T
PG
100 µs Rising Edge of V
OUT
,
R
PULLUP
= 10 k
Detect Threshold to PWRGD
Active Time Delay
T
VDET_PWRGD
200 µs Falling Edge of V
OUT
after
Transition from
V
OUT
= V
PRWRGD_TH
+ 50 mV, to
V
PWRGD_TH
- 50 mV,
R
PULLUP
= 10k to V
IN
AC/DC CHARACTERISTICS (CONTINUED)
Electrical Specifications: Unless otherwise specified, all limits are established for V
IN
= V
R
+ 1V, Note 1, I
LOAD
= 1 mA,
C
OUT
= 1 µF (X7R), C
IN
= 1 µF (X7R), T
A
= +25°C, t
r(VIN)
= 0.5V/µs, SHDN = V
IN
, PWRGD = 10K to V
OUT
.
Boldface type applies for junction temperatures, T
J
(Note 7) of -40°C to +125°C.
Parameters Sym. Min. Typ. Max. Units Conditions
Note 1: The minimum V
IN
must meet two conditions: V
IN
3.6V and V
IN
V
R
+ V
DROPOUT(MAX)
.
2: V
R
is the nominal regulator output voltage when the input voltage V
IN
= V
Rated
+ V
DROPOUT(MAX)
or V
IN
= 3.6V
(whichever is greater); I
OUT
= 1 mA.
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 the output
voltage value that was measured with an applied input voltage of V
IN
= V
R
+ 1V or V
IN
= 3.6V (whichever is greater).
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
,
JA
). Exceeding the maximum allowable power
dissipation causes the device operating junction temperature to exceed the maximum 150°C rating. Sustained junction
temperatures above +150°C can impact the device reliability.
7: 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.