Datasheet

MAX8526/MAX8527/MAX8528
1.425V to 3.6V Input, 2A,
0.2V Dropout LDO Regulators
6 _______________________________________________________________________________________
Pin Description
Functional Diagram
PIN
MAX8526
MAX8527 MAX8528
NAME
FUNCTION
111EN
Enable Input. Set low to place the device in low-current shutdown mode. Set
high for normal operation.
2–5 2–5 2–5 IN
Regulator Input. V
IN
can range from 1.425V to 3.6V. Bypass with a 2.2µF or
higher ceramic capacitor to GND.
6, 7, 14 7, 14 6, 14 T.P. Test Pin
888
GND
Ground
9 9 9 FB Feedback Pin. Connect to output through a voltage-divider to set the output.
10–13 10–13 10–13
OUT
Regulator Output. Bypass with a 10µF ceramic capacitor to GND (a smaller
capacitor can be used if maximum load is less than 2A, i.e., C
OUT
= I
OUT
(max)
x (1µF/200mA).
—6—
POK
Power-OK Output (MAX8527 Only). Open-drain output. Connect to a positive
supply with a pullup resistor. If not used, leave pin unconnected. See the
Detailed Description for more details.
—— 7
POR
Power-On Reset Output. Open-drain output. Connect to a positive supply with
a pullup resistor. If not used, leave pin unconnected. See the Detailed
Description for more details.
—EP
Exposed Pad on the Underside of the Package. Solder to the ground plane for
proper heat dissipation.
MAX8526
MAX8527
MAX8528
POK
(MAX8527 ONLY)
POR
(MAX8528 ONLY)
GND
REF
OVERTHERMAL
PROTECTION
SHUTDOWN
LOGIC
EN
IN
UNDERVOLTAGE
LOCKOUT
THRESHOLD
0.55V
0.45V
0.50V
ERROR AMP
WITH
SOFT-START
MOS DRIVER
WITH I
LIMIT
OUT
FB