MAX8724 Maxim Integrated Products, MAX8724 Datasheet - Page 7

• Manufacturer Part Number: MAX8724
• Description: (MAX1908 - MAX87xx) Low-Cost Multichemistry Battery Chargers
• Manufacturer: Maxim Integrated Products

ELECTRICAL CHARACTERISTICS
(V
REF, V
per Figure 1a; T
CHARGE-VOLTAGE REGULATION
Battery Regulation Voltage
Accuracy
REFIN Range
REFIN Undervoltage Lockout
CHARGE CURRENT REGULATION
CSIP-to-CSIN Full-Scale Current-
Sense Voltage
Charging-Current Accuracy
Charge-Current Gain Error
(MAX8765 Only)
Charge-Current Offset
(MAX8765 Only)
BATT/CSIP/CSIN Input Voltage
Range
CSIP/CSIN Input Current
Cycle-by-Cycle Maximum Current
Limit
ICTL Power-Down Mode
Threshold Voltage
(MAX1908/MAX8724 Only)
ICHG Transconductance
(MAX1908/MAX8724 Only)
ICHG Transconductance
(MAX8765 Only)
ICHG Transconductance Error
(MAX8765 Only)
ICHG Transconductance Offset
(MAX8765 Only)
DCIN
BST
= V
CSSP
PARAMETER
- V
LX
Low-Cost Multichemistry Battery Chargers
A
= V
= 4.5V, ACIN = GND = PGND = 0, C
= -40°C to +85°C, unless otherwise noted.) (Note 2)
CSSN
_______________________________________________________________________________________
= 18V, V
BATT
SYMBOL
G
G
I
= V
MAX
ICHG
ICHG
CSIP
= V
V
V
V
(Note 1)
V
V
V
V
V
MAX8765 only; V
MAX8724 only;
V
V
Charging
RS2 = 0.015Ω
V
V
V
VCTL
VCTL
VCTL
REFIN
ICTL
ICTL
ICTL
ICTL
ICTL
DCIN
ICTL
CSIP
CSIP
CSIN
LDO
= V
= V
= V
= V
= V
rising
- V
- V
= 0 or V
= V
= V
= V
falling
= 12V, V
CSIN
CSIN
REFIN
REFIN
REFIN
LDO
REFIN
REFIN
REFIN
LDO
= 1µF, LDO = DLOV, C
= 45mV
= 45mV
ICTL
(2, 3, or 4 cells)
x 0.6
x 0.058
CONDITIONS
(2, 3, or 4 cells)
/ 20 (2, 3, or 4 cells)
REFIN
ICTL
= 0 or SHDN = 0
= V
= 3V, V
REFIN
VCTL
x 0.036
REF
= V
= 1µF; CCI, CCS, and CCV are compensated
ICTL
= 0.75 x V
REFIN /
2.785
70.5
MIN
-0.6
-0.6
-0.6
-7.5
-7.5
-7.5
-6.5
2.5
-50
-33
6.0
100
2.7
-6
-2
-2
0
REFIN
TYP
, CELLS = FLOAT, CLS =
REFIN /
3.225
MAX
+0.6
+0.6
+0.6
+7.5
+7.5
+7.5
+6.5
1.92
79.5
+50
+33
650
3.6
7.5
3.3
+6
+2
+2
19
33
1
UNITS
µA/mV
µA/mV
mV
mV
µA
µA
%
%
%
%
V
V
V
A
V
7