MAX1874 Maxim, MAX1874 Datasheet - Page 4

• Manufacturer Part Number: MAX1874
• Description: Dual-Input / USB/AC Adapter / 1-Cell Li+ Charger with OVP and Thermal Regulation
• Manufacturer: Maxim

Dual-Input, USB/AC Adapter, 1-Cell
Li+ Charger with OVP and Thermal Regulation
ELECTRICAL CHARACTERISTICS (continued)
(V
noted. Typical values are at T
ELECTRICAL CHARACTERISTICS
(V
noted. Typical values are at T
4
TIMING
DC Rising to DCOK Falling
USB Rising to UOK Falling
DC Falling to DCOK Going
Open-Drain Propagation Delay
USB Falling to UOK Going
Open-Drain Propagation Delay
DC Rising to PON Rising (90%)
USB Rising to PON Rising (90%)
DC Falling to PON Going
Open-Drain Propagation Delay
USB Falling to PON Going
Open-Drain Propagation Delay
INPUT VOLTAGE RANGES AND INPUT CURRENT
Maximum DC Input Voltage with
Overvoltage Protection
Maximum DC Input Voltage Without
Overvoltage Protection
Maximum Input Voltage for Charging
DC Supply Current
DCLV Operating Voltage Range
DCLV Shutdown Supply Current
USB Input Voltage Range
USB Supply Current
DCI Input Current
THRM Input Bias Current
USB
USB
_______________________________________________________________________________________
= V
= V
DC
DC
= V
= V
PARAMETER
PARAMETER
DCLV
DCLV
= V
= V
EN
EN
= V
A
= V
A
= +25°C.) (Note 4)
= +25°C.)
USEL
USEL
= 5V, V
= 5V, V
USB = open, DC rising to 5V
DC = open, USB rising to 5V
USB = open, 1kΩ pullup
DC = open, 10kΩ pullup
USB = open, DC step to 5V, BATT = 3.6V,
100kΩ pulldown
DC = open, V
100kΩ pulldown
USB = open, 100kΩ pulldown
DC = open, 100kΩ pulldown
Q2 input MOSFET must be in place; charging
occurs only below 6.2V, Figures 3, 4, and 5
DC = DCLV, Q2 input MOSFET not on circuit,
Figure 3
V
V
V
V
V
V
EN
EN
EN
EN
EN
EN
BATT
BATT
= 0V
= 5V
= 0V
= 0V
= 5V, V
= 5V, V
= 4.2V, V
= 4.2V, V
DC
DC
USB
= 0V
= 5V
THRM
THRM
step to 5V, V
CONDITIONS
CONDITIONS
= V
= V
REF
REF
/ 2, Circuit of Figure 2, T
BATT
/ 2, Circuit of Figure 2, T
= 3.6V,
A
MIN
4.35
4.35
MIN
A
6.0
= -40°C to +85°C, unless otherwise
= 0°C to +85°C, unless otherwise
TYP
TYP
20
20
20
20
2
2
2
2
MAX
MAX
6.00
6.50
500
750
300
100
100
6.5
6.5
18
4
6
3
UNITS
UNITS
ms
ms
ms
ms
mA
mA
µs
µs
µs
µs
µA
µA
µA
nA
nA
V
V
V
V
V