(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
Minimum T
ON
T
ON_MIN
40
80
ns
Maximum Duty Cycle
D
MAX_BUCK2
Buck2IAdptEnb = 0
98
%
Switching Frequency
f
SW_BUCK2
Load regulation error = -3%
3
MHz
Average Current During
Short-Circuit to GND
I
SHRT_BUCK2
Buck2ISet
= 150mA,
Buck2IAdptEnb = 0, V
B2OUT
= 0V
100
mA
BLX Leakage Current
I
BLX_BUCK2
0.005
1
µA
Active Discharge Current
I
PD_BUCK2
V
B2OUT
= 1.2V
17
mA
Passive Discharge
Resistance
R
PD_BUCK2
V
B2OUT
= 1.2V
9
kΩ
Full Turn-On Time
T
ON_BUCK2
Time from enable to full current
capability, Buck2Fst = 0
58
ms
Efficiency
Eff
BUCK2
I
LOAD
= 10mA, Buck2ISet
= 150mA,
Inductor = BOURNS SRP2010-
2R2M, V
B2OUT
= 1.2V
87
%
BLX Rising/Falling Slew
Rate
SR
BLX_BUCK2
Buck2LowEMI = 0
2
V/ns
Buck2LowEMI = 1
0.5
Thermal-Shutdown
Temperature
T
SHDN_BUCK2
140
°C
Thermal-Shutdown
Temperature Hysteresis
T
SHDN_HYST_BUCK2
10
°C
LDO1
(C = 1μF, unless otherwise noted. Typical values are at V
L1IN
= 3.7V, with I
L1OUT
= 10mA, V
L1OUT
= 3V.)
Input Voltage
V
INLDO1
LDO mode
2.7
5.5
V
Switch mode
1.2
5.5
V
Quiescent Supply
Current
I
Q_LDO1
LDO enabled, I
L1O
UT
= 0µA
0.55
4
µA
LDO enabled, I
L1O
UT
= 0µA,
Switch mode
0.45
Shutdown Supply
Current with Active
Discharge Enabled
I
SD_LDO1
LDO1 disabled. LDO1ActDSC=1.
55
µA
Maximum Output
Current
I
L1O
UT_MAX
100
mA
Output Voltage
V
L1OUT
0.8
3.6
V
Output Accuracy
ACC
LDO1
V
L1IN
= (V
L1OUT
+ 0.5V) or higher,
I
L
1OUT
= 100µA
-2.7
+2.7
%
MAX20335
PMIC with Ultra-Low I
Q
Voltage Regulators and
Battery Chargers for Small Lithium Ion Systems
www.maximintegrated.com
Maxim Integrated
│
10
Electrical Characteristics (continued)
