Datasheet

MAX8600/MAX8601
Single-/Dual-Input 1-Cell Li+ Chargers with
OVP Protection and Programmable Charge Timer
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS (continued)
(V
DC
= V
USB
= 5V, V
BAT
= 4V, V
EN
= 0V, R
SETI
= 2kΩ, C
CT
= 0.068µF, T
A
= -40°C to +85°C, unless otherwise noted. Typical values
are at T
A
= +25°C. Note 1)
PARAMETER CONDITIONS
MIN
TYP
MAX
UNITS
EN, USEL
Rising 1.6
Logic Input Thresholds
Falling 0.4
V
T
A
= +25°C
0.001
1
Logic Input Leakage Current
V
EN
= V
USEL
= 0 to 5.5V
T
A
= +85°C
0.01
µA
POK, CHG, FLT
Logic Output Voltage, Low I
POK,
= I
CHG
= I
FLT
= 1mA 12
100
mV
T
A
= +25°C
0.001
1
Logic Output Leakage
Current, High
V
POK
= V
CHG
= V
FLT
= 5.5V,
V
DC
= V
USB
= 0V
T
A
= +85°C
0.01
µA
CHG
R
SETI
= 1.5kΩ 75
R
SETI
= 2kΩ
37.5 56.25 75.0
CHG/Top-Off Threshold
I
BAT
falling, battery is
charged
R
SETI
= 5kΩ
22.5
mA
THM
THM Pullup Resistance 10 kΩ
THM Resistance, Hot R
THM
falling, 420Ω hysteresis (typ)
3.72 3.94 4.13
kΩ
THM Resistance, Cold R
THM
rising, 2.7kΩ hysteresis (typ)
26.7 28.3 29.7
kΩ
THM Resistance, Disabled R
THM
falling, 230Ω hysteresis (typ)
274 309 337
Ω
CT
Timer Accuracy C
CT
= 0.068µF -20
+20
%
Prequal Time Limit From entering prequal to FLT low, V
BAT
< 3V
34.8
min
Charge Time Limit From entering fast-charge to FLT low, 3V < V
BAT
< 4.2V
334
min
Top-Off Time Limit From CHG high to charger disabled
34.8
min
THERMAL LOOP
Thermal-Limit Temperature
Juncti on tem p er atur e w hen the char g e cur r ent i s r ed uced ,
T
J
r i si ng
+100
°C
Thermal-Limit Gain
Reduction of I
BAT
for increase of T
J
, from V
DC
, R
SETI
= 1.5kΩ
5
%/°C
Note 1: Limits are 100% production tested at T
A
= +25°C. Limits over the operating temperature range are guaranteed by design
and characterization.
Note 2: Input refers to either DC or USB.
Note 3: Guaranteed by undervoltage- and overvoltage-threshold testing. For complete charging, the input voltage must be greater
than 4.32V.