Datasheet

3
Maxim Integrated
Dual-Input Linear Charger, Smart Power Selector
with Advanced Battery Temperature Monitoring
MAX8934G
ELECTRICAL CHARACTERISTICS (continued)
(V
DC
= V
PEN1
= V
PEN2
= 5V, CEN = USUS = THMEN = GND, V
BATT
= 4V, V
THM
= 1.65V, USB, THMSW, CHG, DONE, OT, DOK,
UOK, FLT are unconnected, C
CT
= 0.068FF, T
A
= -40NC to +85NC, unless otherwise noted. Typical values are at T
A
= +25NC.) (Note 1)
PARAMETER CONDITIONS MIN TYP MAX UNITS
USB-TO-SYS PREREGULATOR
USB Operating Voltage Range 4.1 6.6 V
USB Withstand Voltage V
BATT
= V
SYS
= 0V 8 V
USB Undervoltage Threshold
When V
UOK
goes low, V
USB
rising, 500mV hysteresis
3.95 4.0 4.05 V
USB Overvoltage Threshold
When V
UOK
goes high, V
USB
rising, 360mV hysteresis
6.8 6.9 7.0 V
USB Operating Supply Current
I
SYS
= I
BATT
= 0mA, V
CEN
= V
PEN2
= 0V
1 2
mA
I
SYS
= I
BATT
= 0mA, V
CEN
= 5V, V
PEN2
= 0V
0.9 1.5
USB Suspend Current
DC = unconnected, V
USB
= V
CEN
= V
USUS
= 5V
190 340
FA
USB to SYS On-Resistance
DC unconnected, V
USB
= V
CEN
= 5V, I
SYS
= 400mA
0.22 0.33
I
USB-to-BATT Dropout Voltage
When SYS regulation and charging stops, V
USB
falling,
150mV hysteresis
10 50 90 mV
USB Current Limit
(See Table 2)
DC unconnected,
V
USB
= 5V, T
A
= +25NC
V
PEN1
= 0V, V
PEN2
= 5V 450 475 500
mA
V
PEN1
= V
PEN2
= 0V 80 95 100
SYS Regulation Voltage
DC unconnected, V
USB
= 6V, V
PEN2
= 5V, I
SYS
= 1mA
to 400mA, V
CEN
= 5V
4.29 4.35 4.4 V
Input Limiter Soft-Start Time Input current ramp time 50
Fs
Thermal-Limit Temperature
Die temperature at when the charging current and input
current limits are reduced
100
NC
Thermal-Limit Gain
I
SYS
reduction with die temperature (above +100NC)
5
%/NC
V
L
Voltage DC unconnected, V
USB
= 5V, I
VL
= 0 to 5mA 3 3.3 3.6 V
LDO LINEAR REGULATOR
LDO Output Voltage
DC unconnected, V
USB
= 5V, I
LDO
= 0mA 3.234 3.3 3.366
VV
DC
= 5V, USB unconnected, I
LDO
= 0mA 3.234 3.3 3.366
DC and USB unconnected, V
BATT
= 4V, I
LDO
= 0mA 3.234 3.3 3.366
LDO Load Regulation I
LDO
= 0 to 30mA 0.003 %/mA
BATTERY CHARGER
BATT-to-SYS On-Resistance V
DC
= 0V, V
BATT
= 4.2V, I
SYS
= 1A 0.04 0.08
I
BATT-to-SYS Reverse
Regulation Voltage
V
PEN1
= V
PEN2
= 0V, I
SYS
= 200mA 50 75 105 mV
BATT Regulation Voltage—Safety
Region 2
I
BATT
= 0mA
T
A
= +25NC, V
THM_T2
< V
THM
<
V
THM_T3
4.175 4.2 4.225
V
T
A
= 0NC to +85NC, V
THM_T2
<
V
THM
< V
THM_T3
4.158 4.2
4.242
T
A
= +25NC, V
THM_T1
< V
THM
<
V
THM_T2
or V
THM_T3
< V
THM
<
V
THM_T4
4.05 4.075 4.1
T
A
= 0NC to +85NC, V
THM_T1
<
V
THM
< V
THM_T2
or V
THM_T3
<
V
THM
< V
THM_T4
4.034 4.075 4.1