MAX1822
High-Side Power Supply
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(V
CC
= +5V, T
A
= T
MIN
to T
MAX
, unless otherwise noted.)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
Note 1: High-side voltage measured with respect to ground.
Note 2: For V
CC
> +13V on the MAX1822, use C1 = C2 = 0.01µF.
Note 3: Power-Ready Threshold is the voltage with respect to ground at V
OUT
when PR switches high (PR = V
CC
).
V
CC
......................................................................................+17V
V
OUT
....................................................................................+30V
I
OUT
...................……………………………………………….25mA
Continuous Total Power Dissipation (T
A
= +70°C)
8-pin SO (derate 5.88mW/°C above +70°C)...............471mW
Operating Temperature Range ...........................-40°C to +85°C
Storage Temperature Range .............................-65°C to +160°C
Lead Temperature (soldering, 10s) .................................+300°C
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Supply Voltage V
CC
3.5 16.5 V
I
OUT
= 0, V
CC
= 3.5V,
C1 = C2 = 0.047µF, C3 = 1µF
11.5 12.5 16.5
I
OUT
= 0, V
CC
= 4.5V, C1 = C2 = 0.047µF,
C3 = 1µF
14.5 15.5 17.5
I
OUT
= 0, V
CC
= 16.5V, C1 = C2 = 0.01µF,
C3 = 1µF (Note 2)
26.5 27.5 29.5
I
OUT
= 50µA, V
CC
= 3.5V,
C1 = C2 = 0.047µF, C3 = 1µF
8.5 10.5 16.5
I
OUT
= 250µA, V
CC
= 5V,
C1 = C2 = 0.047µF, C3 = 1µF
15 18
High-Side Voltage (Note 1) V
OUT
I
OUT
= 500µA, V
CC
= 16.5V,
C1 = C2 = 0.01µF, C3 = 1µF (Note 2)
26.5 29.5
V
Power-Ready Threshold PRT I
OUT
= 0 (Note 3) 12 13.5 14.5 V
Power-Ready Output High PR
OH
I
SOURCE
= 100µA 3.8 4.3 5 V
Power-Ready Output Low PR
OL
I
SINK
= 1mA 0.4 V
Output Voltage Ripple VR
C1 = C2 = 0.01µF, C3 = 10µF,
I
OUT
= 1mA, V
CC
= 16.5V
50 mV
Switching Frequency F
O
90 kHz
I
OUT
= 0, V
CC
= 5V, C1 = C2 = 0.047µF,
C3 = 1µF, T
A
= +25°C
150 500
Quiescent Supply Current IQ
I
OUT
= 0, V
CC
= 16.5V, C1 = C2 = 0.047µF,
C3 = 1µF, T
A
= +25°C
150 350
µA
