MAX1647EAP Maxim Integrated Products, MAX1647EAP Datasheet - Page 6

• Manufacturer Part Number: MAX1647EAP
• Description: Battery Charger Lead-Acid/Li-Ion/NiCD/NiMH 4000mA 18V 20-Pin SSOP
• Manufacturer: Maxim Integrated Products
• Type: Battery Chargerr

Specifications of MAX1647EAP

• Package: 20SSOP
• Battery Type: Lead-Acid|Li-Ion|NiCD|NiMH
• Operating Supply Voltage: 7.5 to 28 V
• Output Current: 4000 mA
• Output Voltage: 18(Max) V

Chemistry-Independent Battery Chargers
(Circuit of Figure 3, T
6
__________________________________________Typical Operating Characteristics
35
30
25
20
15
10
_______________________________________________________________________________________
40
5
0
0
V
V
ChargingCurrent( ) = 0xFFFF
ChargingVoltage( ) = 0xFFFF
DCIN
BATT
INPUT AND OUTPUT POWER
500
= 28V
= 12.6V
CURRENT INTO BATT (mA)
5.5
5.0
4.5
4.0
3.5
POWER TO BATT
0
1000
A
0
ChargingVoltage( ) = 0x2EE0 = 12000mV
ChargingCurrent( ) = 0xFFFF = MAX VALUE
ACDCIN = 18.0V, SEL = OPEN, R1 = 0.1Ω
R2 = 10kΩ, C1 = 68µF, C2 = 0.1µF, C3 = 47nF
L1 = 22µH, V
= +25°C, unless otherwise noted.)
CIRCUIT OF FIGURE 3
V
POWER INTO
VL VOLTAGE vs. LOAD CURRENT
DCIN
1500
CIRCUIT
10
= 6.6V
BATT LOAD TRANSIENT
LOAD CURRENT (mA)
REF
2000
20
MAX1647
= 4.096V
1ms/div
0.9A TO 1.9A TO 0.9A
2500
CCI
CCV
30
0.001
0.01
40
100
0.1
10
MAX1647/48-01
1
CCV
CCI
0
50
V
ChargingVoltage( ) = 0xFFFF
ChargingCurrent( ) = 0xFFFF
DCIN
OUTPUT V-I CHARACTERISTIC
2.4V
12V
BATT NO-LOAD
OUTPUT VOLTAGE = 16.384V
500
= 28V, V
LOAD CURRENT (mA)
V
V
200mV/div
V
1V/div
CCI
CCV
BATT
1000
REF
MAX1647
= 4.096V
1500
2000
3.84
3.82
3.80
3.78
3.76
3.74
3.72
3.86
3.70
2500
0
ChargingVoltage( ) = 0x2EE0 = 12000mV
ChargingCurrent( ) = 0x03E8 = 1000mA
ACDCIN = 18.0V, SEL = OPEN, C1 = 68µF,
C2 = 0.1µF, C3 = 47nF, R1 = 0.1Ω
R2 = 10kΩ, L1 = 22µH, V
1.1A TO 0.9A TO 1.1A
INTERNAL REFERENCE VOLTAGE
CCV
BATT LOAD TRANSIENT
0.5
-0.2
-0.4
LOAD CURRENT (mA)
0.8
0.6
0.4
0.2
CCI
0
MAX1647
PROGRAMMED VOLTAGE CODE IN DECIMAL
CCI
2ms/div
CCV
1.0
4500
REF
OUTPUT VOLTAGE ERROR
CCI
= 4.096V
1.5
CCV
8500
300mA LOAD
MAX1647/48-02
3mA LOAD
2.0
12V
12,500
2.3V
V
V
100mV/div
V
5V/div
CCV
CCI
BATT
16,500