MAX1870AETJ+ Maxim Integrated Products, MAX1870AETJ+ Datasheet - Page 9

• Manufacturer Part Number: MAX1870AETJ+
• Description: Battery Management Li+ Step Up/Step Down Battery Charger
• Manufacturer: Maxim Integrated Products

Specifications of MAX1870AETJ+

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

(Circuit of Figure 1, V
SYSTEM LOAD-TRANSIENT RESPONSE
BATTERY INSERTION AND REMOVAL
CHARGE-CURRENT STEP RESPONSE
INSERTION
BATTERY
DCIN
_______________________________________________________________________________________
STEP-DOWN MODE
CCI
= 16V, CELLS = REFIN, V
CCV
BATTERY REMOVAL
2.00ms/div
400μs
200μs
CCI
STEP-DOWN
CCV
MODE
18V
16V
CLS =
CCI AND CCV
5A
0A
4A
2A
0A
5A
0A
2A
0A
5V
V
0V
2A
0A
1V
CCI
0V
2A
0A
20V
I
5A/div
0
0
4V
2V
CHARGE
ICTL
INDUCTOR CURRENT
BATTERY CURRENT
SYSTEM LOAD
INDUCTOR CURRENT
INPUT CURRENT
BATTERY CURRENT
V
BATT
V
REF
, V
ICTL
= V
Typical Operating Characteristics
REFIN
= 3.3V, T
Li+ Battery Charger
Step-Up/Step-Down
SYSTEM LOAD-TRANSIENT RESPONSE
CHARGE-CURRENT STEP RESPONSE
BATTERY-REMOVAL RESPONSE
HYBRID MODE
HYBRID MODE
A
= +25°C, unless otherwise noted.)
R
10.0μs/div
CV
= 20kΩ, C
100μs
400μs
R
R
CV
CV
= 10kΩ, C
= 10kΩ, C
OUT
= 44μF
OUT
OUT
= 22μF
= 44μF
21V
20V
19V
18V
17V
16V
5V
V
0V
2A
0A
1V
CCI
0V
2A
0A
5A
0A
4A
2A
0A
5A
0A
2A
0A
ICTL
INDUCTOR CURRENT
BATTERY CURRENT
SYSTEM LOAD
INDUCTOR CURRENT
INPUT CURRENT
BATTERY CURRENT
V
BATT
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