MAX8588 Maxim Integrated Products, MAX8588 Datasheet - Page 9

• Manufacturer Part Number: MAX8588
• Description: High-Efficiency Low-IQ PMIC
• Manufacturer: Maxim Integrated Products

ELECTRICAL CHARACTERISTICS (continued)
Note 1: Dropout voltage is guaranteed by the p-channel switch resistance and assumes a maximum inductor resistance of 45mΩ.
Note 2: The PWM-skip-mode transition has approximately 10mA of hysteresis.
Note 3: The maximum output current is guaranteed by the following equation:
Note 4: POK only indicates the status of supplies that are enabled (except V7). When a supply is turned off, POK does not trigger
Note 5: Specifications to -40°C are guaranteed by design, not production tested.
where:
and
low. When a supply is turned on, POK immediately goes low until that supply reaches regulation. POK is forced low when all
supplies (except V7) are disabled.
R
R
R
I
f = operating frequency minimum
L = external inductor value
I
small relative to the absolute value.
Dynamic Core for PDAs and Smartphones
OUT(MAX)
LIM
N
P
L
= external inductor ESR
= p-channel power switch R
_______________________________________________________________________________________
= n-channel synchronous rectifier R
can be substituted for I
= maximum required load current
High-Efficiency, Low-I
I
OUT
D
OUT(MAX)
max
=
DS(ON)
V
V
OUT
=
IN
1
(desired) when solving for D. This assumes that the inductor ripple current is
+
DS(ON)
+
+
I
LIM
I
OUT MAX
(
I
R
OUT MAX
N
−
(
(
+
V
R
OUT
2
)
L
)
)
(
x f x L
R
(
R
2
(
N
1
(
N
1
x f x L
−
−
+
−
R
D
R
D
P
)
L
)
)
)
Q
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9