MAX8725ETI Maxim Integrated Products, MAX8725ETI Datasheet - Page 10

• Manufacturer Part Number: MAX8725ETI
• Description: Battery Management Multichemistry Battery Charger
• Manufacturer: Maxim Integrated Products

Specifications of MAX8725ETI

• Product: Charge Management
• Battery Type: Li-Ion, Li-Polymer, NiCd, NiMH, Lead Acid, Universal
• Operating Supply Voltage: 8 V to 28 V
• Supply Current: 2.7 mA
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Package / Case: TQFN-28
• Charge Safety Timers: No
• Mounting Style: SMD/SMT
• Temperature Monitoring: No
• Uvlo Start Threshold: 9.18 V
• Uvlo Stop Threshold: 9.42 V
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Multichemistry Battery Chargers with Automatic
System Power Selector
(Circuit of Figure 2, V
10
______________________________________________________________________________________
-0.05
-0.10
-0.05
-0.10
-0.15
-0.20
0.10
0.05
0.10
0.05
0
0
-40
0
DCIN
LINE-TRANSIENT RESPONSE
-15
REF vs. TEMPERATURE
LDO LINE REGULATION
= 20V, charge current = 3A, 4 Li+ series cells, T
TEMPERATURE (°C)
INPUT VOLTAGE (V)
10
10
500μs/div
35
20
MAX1909/MAX8725 toc03
60
Typical Operating Characteristics (continued)
85
30
30V
20V
INDUCTOR CURRENT
200mA/div
3A
V
200mV/div
1.8V
1.6V
BATT
V
V
DCIN
CCV
AC-COUPLED
-0.02
-0.04
-0.06
-0.08
-0.10
-0.12
-0.14
A
-0.2
-0.4
-0.6
-0.8
-1.0
-1.2
-1.4
100
= +25°C, unless otherwise noted.)
98
96
94
92
90
88
86
84
82
80
0
0
0
0
0
4 CELLS
EFFICIENCY vs. CHARGE CURRENT
1
0.5
200
2
REF LOAD REGULATION
LDO LOAD REGULATION
CHARGE CURRENT (A)
3
LDO CURRENT (mA)
REF CURRENT (μA)
1.0
3 CELLS
400
4
1.5
5
600
6
2.0
7
800
8
2.5
9
1000
10
3.0