MAX8724 Maxim Integrated Products, MAX8724 Datasheet - Page 3

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

ELECTRICAL CHARACTERISTICS (continued)
(V
REF, V
per Figure 1a; T
Cycle-by-Cycle Maximum Current
Limit
ICTL Power-Down Mode
Threshold Voltage
(MAX1908/MAX8724 Only)
ICTL, VCTL Input Bias Current
REFIN Input Bias Current
ICHG Transconductance
(MAX1908/MAX8724 Only)
ICHG Transconductance
(MAX8765 Only)
ICHG Transconductance Error
(MAX8765 Only)
ICHG Transconductance Offset
(MAX8765 Only)
ICHG Accuracy
ICHG Output Current
ICHG Output Voltage
INPUT-CURRENT REGULATION
CSSP-to-CSSN Full-Scale
Current-Sense Voltage
Input Current-Limit Accuracy
Input Current-Limit Gain Error
(MAX8765 Only)
Input Current-Limit Offset
(MAX8765 Only)
CSSP, CSSN Input Voltage
Range
CSSP, CSSN Input Current
(MAX1908/MAX8724 Only)
CSSP Input Current
(MAX8765 Only)
DCIN
BST
= V
PARAMETER
CSSP
- V
LX
Low-Cost Multichemistry Battery Chargers
A
= V
= 4.5V, ACIN = GND = PGND = 0, C
= 0°C to +85°C, unless otherwise noted. Typical values are at T
CSSN
_______________________________________________________________________________________
= 18V, V
BATT
SYMBOL
G
G
I
MAX
ICHG
ICHG
= V
CSIP
RS2 = 0.015Ω
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
= V
ICTL
VCTL
DCIN
DCIN
REFIN
CSIP
CSIP
CSIP
CSIP
CSIP
CSIP
CSIP
CLS
CLS
CLS
DCIN
CSSP
CSSP
CSIN
= V
= V
= 1.1V (MAX8765 only)
LDO
rising
- V
- V
- V
- V
- V
- V
- V
= V
= 0, V
= 5V, V
= 0
= V
= V
= 5V
CSIN
CSIN
CSIN
CSIN
CSIN
CSIN
CSIN
REF
REF
= 12V, V
ICTL
CSSN
CSSN
= 1µF, LDO = DLOV, C
VCTL
/ 2
REFIN
= 45mV
= 45mV
= 75mV
= 45mV
= 5mV
= 150mV, V
= 150mV, ICHG = float
= 0 or 3V
CONDITIONS
= V
= 28V
= V
REFIN
DCIN
= 3V
ICTL
= 3V, V
> 8V
ICHG
= V
REFIN
V
V
= 0
DCIN
DCIN
VCTL
A
REF
= +25°C.)
= 5V
= 0V
= 28V
= V
= 1µF; CCI, CCS, and CCV are compensated
ICTL
= 0.75 x V
REFIN /
MIN
2.85
-7.5
100
350
-40
-10
6.0
2.7
3.5
72
-1
-1
-1
-1
-5
-5
-6
-5
-4
-2
-2
8
REFIN
REFIN /
TYP
350
400
0.1
0.1
6.8
75
55
3
3
, CELLS = float, CLS =
REFIN
MAX
+7.5
3.15
+10
+40
600
650
/ 33
7.5
3.3
+4
+2
+2
+1
+1
+1
+1
+5
+5
+6
+5
78
28
1
1
UNITS
µA/mV
µA/mV
mV
mV
µA
µA
µA
µA
µA
µA
%
%
%
%
A
V
V
V
3