MAX17085BETL+T Maxim Integrated Products, MAX17085BETL+T Datasheet - Page 12

• Manufacturer Part Number: MAX17085BETL+T
• Description: Battery Management Dual Main Step-Down Controller
• Manufacturer: Maxim Integrated Products

Specifications of MAX17085BETL+T

• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

(Circuit of Figure 1, V
Integrated Charger, Dual Main Step-Down
Controllers, and Dual LDO Regulators
12
-10
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
-1
-2
-3
-4
-5
-6
-7
-8
-9
_____________________________________________________________________________________
0
7
6
5
4
3
2
1
0
0
0
0
3
V
CHARGER SWITCHING FREQUENCY
IINP ERROR vs. SYSTEM CURRENT
10
ADAPTER
10
20
vs. ISET SETTING (PWM)
vs. BATTERY VOLTAGE
ADAPTER ABSENT, V
20
6
CHARGER CURRENT
= 19V
BATTERY VOLTAGE (V)
ISET DUTY CYCLE (%)
30
3-CELL BATTERY
V
V
I
CSSP
ADAPTER
CHARGER
(DC SWEEP)
30
40
ADP
- V
4A INPUT CURRENT LIMIT
40
50
9
CSSN
= 19V
= 3A
= V
60
50
(mV)
3-CELL BATTERY
BATTERY
SYS
V
ADAPTER
70
RS2 = 10mI
60
12
= 20V, V
80
= 13V
70
= 19V
90
100
80
15
BATT
= 16.8V, LDO5 = V
0.25
0.20
0.15
0.10
0.05
-0.1
-0.2
-0.3
0.6
0.5
0.4
0.3
0.2
0.1
0
7
6
5
4
3
2
1
0
0
4.5
0
0
I
CHARGER
5.5
CHARGER-VOLTAGE PER CELL
0.5
CHARGER-CURRENT ERROR
CHARGER VOLTAGE ERROR
1
vs. CHARGER CURRENT
vs. BATTERY VOLTAGE
6.5
1.0
= 5A
vs. VCTL VOLTAGE
CHARGER CURRENT (A)
BATTERY VOLTAGE (V)
I
I
CHARGER
VCTL VOLTAGE (V)
CHARGER
2
7.5
2-CELL
4-CELL
1.5
CC
4A INPUT CURRENT LIMIT
8.5
= 3A
3
= 4A
= 5V, LDO3 = 3.3V, T
2.0
Typical Operating Characteristics
9.5
3-CELL BATTERY
V
V
4
ADAPTER
2.5
3-CELL
ADAPTER
10.5
RS2 = 10mI
5
3.0
11.5
= 19V
= 19V
12.5
3.5
6
A
27.5V
0.35
0.33
0.31
0.29
0.27
0.25
0.23
0.21
0.19
0.17
0.15
19V
= +25°C, unless otherwise noted.)
0V
0A
9
8
7
6
5
4
3
2
1
0
3.0
0
3-CELL BATTERY
0.2
BATTERY REMOVAL (V
3.2
vs. ISET SETTING (ANALOG)
CHARGER-VOLTAGE ERROR
0.4 0.6 0.8 1.0
3.4
CHARGER CURRENT
vs. CELL VOLTAGE
CELL VOLTAGE (V)
ISET VOLTAGE (V)
3.6
4-C ELL
2-C ELL
100µs/div
4A INPUT CURRENT LIMIT
3.8
2-CELL
4-CELL
1.2 1.4
4.0
V
BATT
3-C ELL
ADAPTER
1.6
4.2
MAX17085B toc09
3-CELL
= 3V)
= 19V
1.8
4.4
2.0
PDSL
5V/div
DCIN
5V/div
V
5V/div
IL
2A/div
BATT
CHG