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.
PIN
NAME
FUNCTION
C1
L3OUT
LDO3 Output. Bypass with a minimum 1µF capacitor to GND.
C2
L3IN
LDO3 Input
C5
SET
External Resistor For Battery Charge Current Level Setting. Do not connect any external capacitance
on this pin; maximum allowed capacitance (C
SET
< 5µs/R
SET
) pF.
C6, D6
SYS
System Load Connection. Connect SYS to the system load. Bypass SYS with a minimum 10µF low-
ESR ceramic capacitor to GND.
D1
LED
LED Open-Drain Pulldown Current. Add an external current limiting pullup resistor.
D2
PFN2
Power Function Control Input/Output. Programmable functionality via PwrFnMode. See Table 1.
D5
EXT
Push-Pull Gate Drive for Optional External pFET from BAT-to-SYS. Output is pulled to GND when
charger is disconnected and internal BAT-SYS FET is switched on. Otherwise, this output is pulled
high to the SYS voltage.
E1
RST
Power-On Reset Output. Active-low, open-drain.
E2
MPC0
Multipurpose Configuration Input 0
E3
MPC1
Multipurpose Configuration Input 1
E4
PFN1
Power Function Control Input. Programmable functionality via PwrFnMode. See Table 1.
E5, E6
CHGIN
-5.5V/+28V Protected Charger Input. Bypass CHGIN with 1µF capacitor to GND.
F1
SDA
Open-Drain, I
2
C Serial Data Input/Output.
F2
SCL
I
2
C Serial Clock Input
F3
THM
Battery Temperature Thermistor Measurement Connection. Connect a 10kΩ resistor from THM to
CAP and a 10kΩ, 3380β NTC thermistor from THM to GND.
F5
B1OUT
0.7V to 2.275V Buck Regulator Output Feedback. Bypass B1OUT with a 10µF capacitor to GND.
F6
B1LX
0.7V to 2.275V Buck Regulator Switch Terminal. Connect B1LX to B1OUT with a 2.2µH inductor.
MAX20335
PMIC with Ultra-Low I
Q
Voltage Regulators and
Battery Chargers for Small Lithium Ion Systems
www.maximintegrated.com
Maxim Integrated
│
26
Bump Description (continued)
