MAX8845ZETC+ Maxim Integrated Products, MAX8845ZETC+ Datasheet - Page 4

• Manufacturer Part Number: MAX8845ZETC+
• Description: IC BATT CHRGR LI+ 28V 12TQFN-EP
• Manufacturer: Maxim Integrated Products

Specifications of MAX8845ZETC+

• Function: Charge Management
• Battery Type: Lithium-Ion (Li-Ion)
• Voltage - Supply: 0 V ~ 28 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 12-TQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

28V Linear Li+ Battery Chargers with Battery
Detection and Overvoltage Protected Output
(V
4.7kΩ to GND, C
4
600
500
400
300
200
100
IN
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
0
0
_______________________________________________________________________________________
= 5V, V
0
0
0
4
4
SAFEOUT OUTPUT VOLTAGE
20
BATT
vs. INPUT VOLTAGE
vs. INPUT VOLTAGE
vs. LOAD CURRENT
CHARGE CURRENT
8
SUPPLY CURRENT
8
LOAD CURRENT (mA)
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
BATT
= 4V, R
40
12
12
= 2.2µF, T
16
16
POK
60
20
20
= R
V
I
V
BATT
EN
IN
80
A
RISING
CHG
= 0,
24
24
= 0
= +25°C, unless otherwise noted.)
= 200kΩ to 5V, EN = unconnected, R
100
28
28
1000
V
900
800
700
600
500
400
300
200
100
I
0.6
0.5
0.4
0.3
0.2
0.1
BATT
V
POK
V
0
EN
0
IN
0
0
DISABLED MODE SUPPLY CURRENT
vs. INPUT VOLTAGE HEADROOM
100
5
STARTUP INTO PRECHARGE
vs. INPUT VOLTAGE
CHARGE CURRENT
INPUT VOLTAGE (V)
200
10
V
IN
- V
40µs/div
300
15
BATT
(mV)
400
20
Typical Operating Characteristics
MAX8845Z/Y/X/W toc08
V
V
V
BATT
IN
EN
SETI
500
25
RISING
= 5V
= 4V,
= 2.8kΩ to GND, R
600
30
100mA/div
5V/div
0
5V/div
0
5V/div
0
0
1000
V
900
800
700
600
500
400
300
200
100
I
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
BATT
V
POK
V
EN
0
0
IN
0
0
0.5
MIN
(FAST-CHARGE TO SHUTDOWN)
4
SAFEOUT OUTPUT VOLTAGE
1.0 1.5 2.0
vs. BATTERY VOLTAGE
= 1.74kΩ to GND, R
vs. INPUT VOLTAGE
CHARGE CURRENT
BATTERY VOLTAGE (V)
8
INPUT VOLTAGE (V)
SHUTDOWN
12
40µs/div
2.5 3.0 3.5 4.0 4.5
16
I
SAFEOUT
20
MAX8845Z/Y/X/W toc09
DETBAT
24
= 1mA
28
500mA/div
5V/div
0
5V/div
0
5V/div
0
0
=