Datasheet

MCP1824/MCP1824S
DS22070A-page 8 2007 Microchip Technology Inc.
Maximum Pulsed Output Duty
Cycle
I
PULSE_DUTY
——60%V
IN
= 2.1V to 6.0V,
V
R
= 0.8V to 5.0V,
I
OUT
= 500 mA,
Period < 10 ms
Maximum Pulsed Output Period I
PULSE_PERIOD
——10msV
IN
= 2.1V to 6.0V
V
R
= 0.8V to 5.0V,
I
OUT
= 500 mA
Adjust Pin Characteristics (Adjustable Output Only)
Adjustable Output Voltage
Range
V
OUT_ADJ
0.8 — 5.5 V
Adjust Pin Reference Voltage V
ADJ
0.402 0.410 0.418 VV
IN
= 2.1V to V
IN
=6.0V,
I
OUT
= 1 mA
Adjust Pin Leakage Current I
ADJ
-10 ±0.01 +10 nA V
IN
= 6.0V, V
ADJ
=0Vto6V
Adjust Temperature Coefficient TCV
OUT
— 40 — ppm/°C Note 3
Fixed-Output Characteristics (Fixed Output Only)
Voltage Regulation V
OUT
V
R
- 2.5% V
R
±0.5% V
R
+ 2.5% V Note 2
Power Good Characteristics
PWRGD Input Voltage Operat-
ing Range
V
PWRGD_VIN
1.0 — 6.0 V T
A
= +25°C
1.2 — 6.0 T
A
= -40°C to +125°C
For V
IN
< 2.1V, I
SINK
= 100 µA
PWRGD Threshold Voltage
(Referenced to V
OUT
)
V
PWRGD_TH
%V
OUT
Falling Edge
89 92 95 V
OUT
< 2.5V Fixed,
V
OUT
= Adj.
90 92 94 V
OUT
>= 2.5V Fixed
PWRGD Threshold Hysteresis V
PWRGD_HYS
1.0 2.0 3.0 %V
OUT
PWRGD Output Voltage Low V
PWRGD_L
—0.050.4 VI
PWRGD SINK
= 1.2 mA,
ADJ = 0V
PWRGD Output Current Sink
Capability
I
PWRGD
1.2 6.0 — mA V
PWRGD
= 0.200V
PWRGD Leakage P
WRGD
_
LK
—1—nAV
PWRGD
= V
IN
= 6.0V
PWRGD Time Delay T
PG
— 110 — µs Rising Edge
R
PULLUP
= 10 kΩ
AC/DC CHARACTERISTICS (CONTINUED)
Electrical Specifications: Unless otherwise noted, V
IN
= V
OUT(MAX)
+ V
DROPOUT(MAX)
, Note 1, V
R
= 1.8V for Adjustable Output,
I
OUT
= 1 mA, C
IN
= C
OUT
= 4.7 µF (X7R Ceramic), T
A
= +25°C.
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
≥ 2.1V and V
IN
≥ V
OUT(MAX)
+ V
DROPOUT(MAX).
2: V
R
is the nominal regulator output voltage for the fixed cases. V
R
= 1.2V, 1.8V, etc. V
R
is the desired set point output
voltage for the adjustable cases. V
R
= V
ADJ *
((R
1
/R
2
)+1). Figure 4-1.
3: TCV
OUT
= (V
OUT-HIGH
– V
OUT-LOW
) *10
6
/ (V
R
* ΔTemperature). V
OUT-HIGH
is the highest voltage measured over the
temperature range. V
OUT-LOW
is the lowest voltage measured over the temperature range.
4: 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.
5: 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
IN
= V
OUT(MAX)
+ V
DROPOUT(MAX)
.
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
, θ
JA
). Exceeding the maximum allowable power
dissipation will cause the device operating junction temperature to exceed the maximum +150°C rating. Sustained
junction temperatures above 150°C can impact 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.