Maxim Integrated MAX20335, Руководство пользователя

Страница: 16 / 67

(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
SYS, BATTERY, AND VCCINT UVLOs
SYS UVLO Threshold
V
SYSUVLO_R
Rising 3 3.06
V
V
SYSUVLO_F
Falling 2.92 2.98 3.04
SYS UVLO Threshold
Hysteresis
V
SYSUVLO_HYS
Hysteresis 26 mV
SYS UVLO Falling
Debounce Time
t
SYSUVLO_FDEB
SYS Falling 20 µs
V
CCINT
UVLO Threshold
(POR)
V
UVLO
V
CCINT
Rising 0.8 1.82 2.6 V
V
CCINT
UVLO Threshold
Hysteresis
V
UVLO_HYS
140 mV
BAT UVLO Threshold V
BAT_UVLO
Rising (Valid only when CHGIN is
present. When V
BAT
< V
BAT_UVLO
,
the BAT-SYS switch opens and
BAT is connected to SYS through a
diode.)
1.9 2.05 2.2 V
BAT UVLO Threshold
Hysteresis
V
BAT_UVLO_HYS
Hysteresis 50 mV
BATTERY CHARGER (See Figure 5a and Figure 5b)
(V
BAT
= 4.2V. Typical values are at V
CHGIN
= 5.0V, V
SYS
= V
SYS_REG
)
Allowed BAT Voltage
Range
V
BAT_RNG
0 5.5 V
BAT to SYS
On-Resistance
R
BAT-SYS
V
BAT
= 4.2V, I
BAT
= 300mA 80 140 mΩ
Current Reduce Thermal
Threshold Temperature
T
CHG_LIM
(Note 4) 120
o
C
BAT-to-SYS Switch-On
Threshold
V
BAT-SYS-ON
SYS falling 10 22 35 mV
BAT-to-SYS Switch-Off
Threshold
V
BAT-SYS-OFF
SYS rising -3 -1.5 0 mV
SYS-BAT Regulation
Voltage
V
SYS_REG
V
CHGIN
= 5V, I
SYS
= 1mA
V
BatReg
+ 140mV
V
BatReg
+ 200mV
V
BatReg
+ 260mV
V
MAX20335 PMIC with Ultra-Low I
Q
Voltage Regulators and
Battery Chargers for Small Lithium Ion Systems
www.maximintegrated.com
Maxim Integrated │ 16
Electrical Characteristics (continued)