MAX1874ETE+T Maxim Integrated Products, MAX1874ETE+T Datasheet - Page 13

• Manufacturer Part Number: MAX1874ETE+T
• Description: IC LI+ CHARGER DUAL-IN 16-TQFN
• Manufacturer: Maxim Integrated Products

Specifications of MAX1874ETE+T

• Function: Charge Management
• Battery Type: Lithium-Ion (Li-Ion)
• Voltage - Supply: 4.35 V ~ 6.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 16-WQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Figure 2. A Minimal Circuit that Assumes System Load Is Only Connected to the Battery. The circuit has a 6.5V maximum input and
disables charging for inputs over 6.2V.
Figure 3. A circuit with overvoltage protection MOSFET (Q2) on DC input withstands up to 18V from the AC adapter and disables
charging at inputs over 6.2V.
Li+ Charger with OVP and Thermal Regulation
______________________________________________________________________________________
CHARGING UP TO 6.0V
0VP UP TO 18V
25V CERAMIC
10V CERAMIC
4.7µF
UP TO 6.0V
DC INPUT
C5
USB INPUT
TO REF
4.7µF
Dual-Input, USB/AC Adapter, 1-Cell
6.3V CERAMIC
C5
0.055Ω, -20V
100kΩ
4.7µF
R5
301kΩ
FDN302
C1
R6
Q2
10V CERAMIC
10V CERAMIC
USB INPUT
2.2µF
6.3V CERAMIC
DC
DCOK
DCLV
UOK
USB
DCI
1µF
C2
C4
250mΩ
400mΩ
TO REF
BYP
4.7µF
1kΩ
5%
R2
C1
MAX1874
10V CERAMIC
REGULATOR
PGND
2.2µF
DC
DCOK
DCLV
UOK
USB
DCI
C4
250mΩ
400mΩ
BYP
THRM
USEL
BATT
PON
CHG
GND
REF
EN
MAX1874
REGULATOR
PGND
C3
2.2µF
6.3V CERAMIC
C6
0.1µF
10V CERAMIC
THRM
500mA
100mA
USEL
BATT
CHG
GND
PON
REF
EN
NTC
THERMISTOR
10kΩ AT +25°C
R4
10kΩ
C3
2.2µF
6.3V CERAMIC
Li+
CELL
C6
0.1µF
10V CERAMIC
500mA
100mA
R4
10kΩ
Li+
CELL
NTC
THERMISTOR
10kΩ AT +25°C
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