MAX15062 Datasheet, PDF (13/23 Pages) Maxim Integrated Products – Step-Down DC-DC Converters

MAX15062
Pin Configuration
60V, 300mA, Ultra-Small, High-Efficiency,
Synchronous Step-Down DC-DC Converters
TOP VIEW
LX
8
GND RESET MODE
7
6
5
MAX15062
+¹
2
3
4
VIN EN/UVLO VCC FB/VOUT
TDFN
(2mm x 2mm)
Pin Description
PIN
NAME
FUNCTION
1
V_IN
Switching Regulator Power Input. Connect a X7R 1µF ceramic capacitor from V_IN to GND for bypassing.
Active-High, Enable/Undervoltage-Detection Input. Pull EN/UVLO to GND to disable the regulator output.
2
EN/UVLO Connect EN/UVLO to V_IN for always-on operation. Connect a resistor-divider between V_IN and EN/UVLO
to GND to program the input voltage at which the device is enabled and turns on.
3
V_CC
Internal LDO Power Output. Bypass V_CC to GND with a minimum 1µF capacitor.
Feedback Input. For fixed output voltage versions, connect FB/V_OUT directly to the output. For the
4
FB/V_OUT adjustable output voltage version, connect FB/V_OUT to a resistor-divider between V_OUT and GND to
adjust the output voltage from 0.9V to 0.89 x V_IN.
5
MODE
PFM/PWM Mode Selection Input. Connect MODE to GND to enable the fixed-frequency PWM operation.
Leave unconnected for light-load PFM operation.
Open-Drain Reset Output. Pull up RESET to an external power supply with an external resistor.
6
RESET
RESET goes low when the output voltage drops below 92% of the set nominal regulated voltage. RESET
goes high impedance 2ms after the output voltage rises above 95% of its regulation value. See the
Electrical Characteristics table for threshold values.
7
GND
Ground. Connect GND to the power ground plane. Connect all the circuit ground connections together at
a single point. See the PCB Layout Guidelines section.
8
LX
Inductor Connection. Connect LX to the switching side of the inductor. LX is high impedance when the
device is in shutdown.
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