MAX14720 Datasheet, PDF (13/38 Pages) Maxim Integrated Products – Extended System Battery Use Time

MAX14720/MAX14750
Power-Management Solution
Bump Description (continued)
BUMP
MAX14720 MAX14750
C5
C5
D1
D1
D3
—
—
D3
D4
—
—
D4
D5
D5
E1
E1
E2
E2
E3
E3
E4
E4
E5
—
—
E5
NAME
SWOUT
SCL
KIN
SWEN
RST
LEN
CAP
HVOUT
HVOLX
HVILX
HVIN
KOUT
HVEN
FUNCTION
Power Switch Output. Bypass with a 100µF capacitor to GND for battery impedance
measurement.
I²C Serial Clock
KEY Input. Active-low button monitor with internal 210kΩ pullup.
Active-High Power Switch Enable Input
Active-Low, Open-Drain Reset Output
Active-High Linear Regulator Enable Input
Internal Power Decoupling. Bypass with a 0.1µF capacitor to GND.
Buck-Boost Regulator Output. Bypass with a 10µF capacitor to GND.
Buck-Boost Regulator Boost Switch
Buck-Boost Regulator Buck Switch
Buck-Boost Regulator Input (Must be Connected to BIN on the Board). Bypass with a
1µF capacitor to GND.
KEY Output. Active-low, open-drain buffered copy of KIN.
Active-High Buck-Boost Regulator Enable Input
Note: All capacitance values listed in this document refer to effective capacitance. Be sure to specify capacitors that will meet these
requirements under typical system operating conditions taking into consideration the effects of voltage and temperature.
Block Diagram
MAX14720
MAX14750
BUCK-BOOST
CONTROL
BUCK
MONITOR
LDO
UVLO
SWITCH
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