(V
CHGIN
= 5.0V, V
BAT
= 3.7V, T
A
= -40°C to +85°C, all registers in their default state, unless otherwise noted. Typical values are at
T
A
= +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
GLOBAL SUPPLY CURRENT (L_IN Connected to SYS)
Charger Input Current
I
CHG
All functions disabled
0.26
mA
Power on, V
CHGIN
= 5V
SYS switch closed, buck regulators
enabled, LDO1 enabled, I
SYS
= 0A,
I
B_OUT
= 0A, I
L_OUT
= 0A
1.5
BAT Input Current
I
BAT
Power off, V
CHGIN
= 0V,
SYS switch open
0.96
1.7
µA
Power on, V
CHGIN
= 0V
SYS switch closed, 2x buck
regulators enabled, LDOs disabled.
I
SYS
= 0A, I
B_OUT
= 0A
2.8
4.3
Power on, V
CHGIN
= 0V SYS switch
closed, 2x buck regulators enabled,
LDO1 enabled, I
SYS
= 0A, I
B_OUT
=
0A, I
L_OUT
= 0A
3.5
7
Power on, V
CHGIN
= 0V
SYS switch closed, 2x buck
regulators enabled, 3x LDOs
enabled, I
SYS
= 0A, I
B_OUT
= 0A,
I
L_OUT
= 0A
5.2
BUCK REGULATOR 1
(V
SYS
= +3.7V, L = 2.2µH, C = 2.2µF, V
B1OUT
= 1.2V)
Input Voltage
V
IN_BUCK1
Input voltage = V
SYS
2.7
5.5
V
Output Voltage
V
OUT_BUCK1
25mV step resolution
0.7
2.275
V
Output UVLO Voltage
V
UVLO_BUCK1
Note:
For V
OUT
< UVLO ZC is
imposed. Falling edge (75mV typ
hysteresis)
0.35
0.55
V
Quiescent Supply
Current
I
Q_BUCK1
Buck enabled, I
B1OUT
= 0mA,
V
SYS
= 3.7V, V
B1OUT
= 1.2V
(Note 2)
0.9
1.3
µA
Dropout Quiescent
Supply Current
I
QDO_BUCK1
I
B1OUT
= 0mA, (V
SYS
– V
OUT
)
≤ 0.1V
1.1
mA
Shutdown Supply
Current with Active
Discharge Enabled
I
SD_BUCK1
Buck1 disabled. Falling edge (75mV typ
hysterisis)
60
µA
Output Accuracy
ACC
BUCK1
I
B1OUT
= 1mA
-2.5
+2.5
%
Peak-to-Peak Ripple
V
PPRIPPLE1
Buck1ISet
= 100mA, C
OUT
= 2.2µF,
I
B1OUT
= 1mA
10
mV
I
PEAK
Set Range
I
PEAK_BUCK1
25mA step resolution set by
Buck1ISet[3:0].
50
375
mA
MAX20335
PMIC with Ultra-Low I
Q
Voltage Regulators and
Battery Chargers for Small Lithium Ion Systems
www.maximintegrated.com
Maxim Integrated
│
7
Electrical Characteristics
