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MAX1667EAP+T

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P26
MAX1667
Chemistry-Independent,
Level 2 Smart Battery Charger
_______________________________________________________________________________________ 7
5.20
5.30
5.25
5.40
5.35
5.45
5.50
0105 152025
VL LOAD REGULATION
MAX1667 TOC04
LOAD CURRENT (mA)
VL (V)
V
DCIN
= 20V
5.35
5.38
5.37
5.36
5.40
5.39
5.44
5.43
5.42
5.41
5.45
-40 -20 0 20 40 60 80 100
VL vs. TEMPERATURE
MAX1667 TOC05
TEMPERATURE (°C)
VL (V)
V
DCIN
= 20V
4.06
4.10
4.07
4.08
4.09
4.11
00.80.60.2 0.4 1.0 1.2 1.4 1.6 1.8 2.0
V
REF
LOAD REGULATION
MAX1667 TOC06
LOAD CURRENT (mA)
V
REF
(V)
5.350
5.375
5.400
5.425
5.450
VL LINE REGULATION
MAX1667 TOC03
V
DCIN
(V)
VL (V)
010155 202530
NO LOAD
5V/div
10V
LOAD TRANSIENT
(WITH CHANGE IN REGULATION LOOP)
MAX1667TOC02
V
DCIN
= 18V
ChargingVoltage() = 12,000mV
ChargingCurrent() = 1500mA
1ms/div
V
BATT
CCI
CCI
CCI
50mV/div
2V
1A
500mA/div
CCV
CCV
CCV
I
LOAD
AVERAGED MEASUREMENT
5V/div
10V
LOAD TRANSIENT
(VOLTAGE REGULATION WITH CURRENT LIMIT)
MAX1667TOC01
V
DCIN
= 18V
ChargingVoltage() = 12,000mV
ChargingCurrent() = 1500mA
500µs/div
V
BATT
CCI
CCV
CCI
CCI
CCI
200mV/div
1.4V
1A
1A/div
CCV
CCV
CCV
I
LOAD
AVERAGED MEASUREMENT
__________________________________________Typical Operating Characteristics
(Circuit of Figure 7, T
A
= +25°C, unless otherwise noted.)
MAX1667
Chemistry-Independent,
Level 2 Smart Battery Charger
8 _______________________________________________________________________________________
-1.0
-0.6
-0.8
-0.2
-0.4
0.2
0
0.4
0.8
0.6
1.0
04k6k8k2k 10k 12k 14k 18k16k 20k
BATT VOLTAGE ERROR
vs. ChargingVoltage() CODE
MAX1667 TOC12
ChargingVoltage() CODE
BATT VOLTAGE ERROR (%)
I
LOAD
= 3mA
V
DCIN
= 20V
MEASURED AT AVAILABLE
ChargingVoltage() CODES
I
LOAD
= 600mA
-5
0
5
10
15
0 1000 2000 3000500 1500 2500 3500 4000
LOAD CURRENT ERROR
MAX1667 TOC13
CODE
BATT CURRENT ERROR (%)
V
DCIN
=20V
V
BATT
= 12.75V
MEASURED AT AVAILABLE
ChargingCurrent() CODES
Typical Operating Characteristics (continued)
(Circuit of Figure 7, T
A
= +25°C, unless otherwise noted.)
100
0.01
10
1.0
0.1
0.001
0 400 800 1200 1600 2000
OUTPUT V-I CHARACTERISTIC
(SWITCHING REGULATOR)
MAX1667 TOC10
LOAD CURRENT (mA)
DROP IN BATT OUTPUT VOLTAGE (%)
V
DCIN
= 20V
ChargingVoltage() = 17,408mV
ChargingCurrent() = 1920mA
V
REF
= 4.096V
4.080
4.100
4.085
4.090
4.095
4.110
-40 4020-20 0 60 80 100
V
REF
vs. TEMPERATURE
MAX1667 TOC07
TEMPERATURE (°C)
V
REF
(V)
4.105
V
DCIN
= 20V
50
70
55
60
65
100
020001000 3000 4000
EFFICIENCY vs. LOAD CURRENT
(VOLTAGE REGULATION)
MAX1667 TOC08
LOAD CURRENT (mA)
EFFICIENCY (%)
75
80
85
90
95
A: V
DCIN
= 20V, V
BATT
= 17V
B: V
DCIN
= 16V, V
BATT
= 12.75V
C: V
DCIN
= 20V, V
BATT
= 12.75V
D: V
DCIN
= 16V, V
BATT
= 8.5V
E: V
DCIN
= 20V, V
BATT
= 8.5V
A
B
C
E
D
50
70
55
60
65
100
0862 4 10 12 18
EFFICIENCY vs. BATT VOLTAGE
(CURRENT REGULATION)
MAX1667 TOC09
BATT VOLTAGE (V)
EFFICIENCY (%)
75
80
85
90
95
14 16
A: V
DCIN
= 16V, I
LOAD
= 2A
B: V
DCIN
= 20V, I
LOAD
= 2A
C: V
DCIN
= 20V, I
LOAD
= 600mA
A
B
C
MAX1667
Chemistry-Independent,
Level 2 Smart Battery Charger
_______________________________________________________________________________________ 9
Pin Description
Linear Current-Source Output1 IOUT
Input Voltage for Powering Charger2 DCIN
Voltage-Regulation-Loop Compensation Point4 CCV
IC Power Supply. 5.4V linear-regulator output from DCIN.3 VL
Current-Range Selector. Connecting SEL to VL sets a 4A full-scale current. Leaving SEL
open sets a 3A full-scale current. Connecting SEL to AGND sets a 1A full-scale current.
6 SEL
Battery Voltage Input and Current-Sense Negative Input8 BATT
Current-Sense Positive Input7 CS
Current-Regulation-Loop Compensation Point5 CCI
+4.096V Reference Voltage Output or External Reference Input9 REF
Open-Drain Interrupt Output11
INT
Analog Ground10 AGND
Thermistor Sense Voltage Input12 THM
Serial Data (need external pull-up resistor)14 SDA
Power Ground16 PGND
Voltage DAC Output Filtering Point15 DACV
Serial Clock (need external pull-up resistor)13 SCL
High-Side Power MOSFET Driver Output18 DHI
Power Connection for the High-Side Power MOSFET Driver20 BST
Power Connection for the High-Side Power MOSFET Driver19 LX
Low-Side Power MOSFET Driver Output17 DLO
FUNCTIONPIN NAME
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P26

MAX1667EAP+T

Mfr. #:
Buy MAX1667EAP+T
Manufacturer:
Maxim Integrated
Description:
Battery Management Level 2 Smart Battery Charger
Lifecycle:
New from this manufacturer.
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