MAX1874ETE Maxim Integrated Products, MAX1874ETE Datasheet - Page 6

• Manufacturer Part Number: MAX1874ETE
• Description: Battery Management Dual-Input USB/AC Adapter 1-Cell Li+
• Manufacturer: Maxim Integrated Products

Specifications of MAX1874ETE

• Battery Type: Li-Ion, Li-Polymer
• Operating Supply Voltage: 4.35 V to 6.5 V
• Supply Current: 4 mA
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Package / Case: TQFN-16
• Charge Safety Timers: No
• Mounting Style: SMD/SMT
• Temperature Monitoring: No

Dual-Input, USB/AC Adapter, 1-Cell
Li+ Charger with OVP and Thermal Regulation
(V
unless otherwise noted.)
6
USB
800
700
600
500
400
300
200
100
1.2
1.0
0.8
0.6
0.4
0.2
_______________________________________________________________________________________
14
12
10
0
0
8
6
4
2
0
-40 -25 -10 5 20 35 50 65 80 95 110 125
= V
0
0
CHARGE CURRENT vs. TEMPERATURE
vs. DC INPUT-VOLTAGE HEADROOM
0.2 0.4 0.6
DC
2
WITH THERMAL REGULATION
= V
4
vs. DC INPUT VOLTAGE
DC INPUT CURRENT
CHARGE CURRENT
TEMPERATURE (°C)
6
DCLV
(V
0.8
DC
8
DCI SET FOR I
V
- V
DC
1.0 1.2
= V
10
V
V BATT = 4.2V
V EN = 5V
INCLUDES R2 CURRENT
BATT
USB
(V)
12
) (V)
EN
= 0
1.4
BATT
14
= 5V, V
V
V
V
DCI
DC
BATT
1.6
16
= 750mA
= 5V
= V
= 3.9V
1.8
18
REF
BATT
2.0
20
= 4.2V, V
600
500
400
300
200
100
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
1.2
1.0
0.8
0.6
0.4
0.2
0
0
0
0
0
0
V
INCLUDES R3 AND R4 CURRENTS
THRM
EN
0.2 0.4 0.6
vs. USB VOLTAGE HEADROOM
= 5V, V
1
0.5
CHARGE CURRENT vs. V
vs. USB INPUT VOLTAGE
= V
USB INPUT CURRENT
DC
CHARGE CURRENT
2
1.0
FLOATING
(V
REF
USB
0.8
V
3
V
USB
- V
DCI
/ 2, V
1.0 1.2
1.5
BATT
(V)
(V)
Typical Operating Characteristics
4
) (V)
DCI
2.0
1.4
5
= V
1.6
DCI
2.5
6
1.8
REF
2.0
3.0
, V
7
USEL
1000
4.25
4.24
4.23
4.22
4.21
4.20
4.19
4.18
4.17
4.16
4.15
= 5V, Circuit of Figure 4, T
900
800
700
600
500
400
300
200
100
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
0
CHARGE CURRENT vs. BATTERY VOLTAGE
-40
0
0
V
V
I
V
BATT
V
INCLUDES R3 AND R4 CURRENTS
EN
USB
DC
BATTERY TERMINATION VOLTAGE
vs. USB INPUT VOLTAGE (V
EN
0.5
-25
= 5
= V
= 0
= SET TO 750mA
1
= 0
1.0 1.5 2.0 2.5
DCLV
-10
USB INPUT CURRENT
vs. TEMPERATURE
2
(I
= 5V
TEMPERATURE (°C)
BATT
5
V
V
3
BATT
USB
vs. V
20
(V)
(V)
4
3.0 3.5
35
BATT
)
50
A
5
EN
4.0
= +25°C,
65
= 0)
6
4.5
80
5.0
7