MAX8648ETE+ Maxim Integrated Products, MAX8648ETE+ Datasheet - Page 5
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MAX8648ETE+
Manufacturer Part Number
MAX8648ETE+
Description
IC LED DRVR WT/RGB BCKLGT 16TQFN
Manufacturer
Maxim Integrated Products
Type
Backlight, White LED, RGB (Serial Interface)r
Datasheet
1.MAX8647ETE.pdf
(15 pages)
Specifications of MAX8648ETE+
Constant Current
Yes
Topology
PWM, Switched Capacitor (Charge Pump)
Number Of Outputs
6
Internal Driver
Yes
Type - Primary
Backlight
Type - Secondary
RGB, White LED
Frequency
1MHz
Voltage - Supply
1.7 V ~ 5.5 V
Voltage - Output
5V
Mounting Type
Surface Mount
Package / Case
16-TQFN Exposed Pad
Operating Temperature
-40°C ~ 85°C
Current - Output / Channel
24mA
Internal Switch(s)
Yes
Operating Supply Voltage
2.7 V to 5.5 V
Maximum Supply Current
1.6 mA
Maximum Power Dissipation
1667 mW
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
- 40 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Efficiency
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
(V
IN
200
180
160
140
120
100
100
100
80
60
40
20
90
80
70
60
50
40
30
20
10
90
80
70
60
50
40
30
20
10
0
= 3.6V, V
0
0
2.7
2.7
4.2
Six White/RGB LEDs in 3mm x 3mm Thin QFN
INPUT CURRENT vs. INPUT VOLTAGE
LEDs HAVE MISMATCHED V
RGB MODULE: LUMEX SML-LX3632SISUGSBC
I
LEDs HAVE MISMATCHED V
Li+ BATTERY VOLTAGE (V, TIME-WEIGHTED)
LED
EFFICIENCY vs. SUPPLY VOLTAGE
3.9
INPUT CURRENT vs. Li+ BATTERY
= 16mA
3.0
VOLTAGE (RGB MODULE)
EN_
6.4mA/LED
1.6mA/LED
20.8mA/LED
(DRIVING SIX LEDs)
16mA/LED
(DRIVING SIX LEDs)
6.4mA/LED
3.8
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
3.2
= V
3.3
_______________________________________________________________________________________
3.7
IN
I
LED
, circuit of Figure 1, T
I
LED
= 1.6mA
3.6
I
20.8mA/LED
F
LED
F
= 6.4mA
3.6
3.7
= 20.8mA
3.9
3.5
3.4
4.2
4.2
3.0
Ultra-Efficient Charge Pumps for
A
= +25°C, unless otherwise noted.)
100
200
180
160
140
120
100
90
80
70
60
50
40
Typical Operating Characteristics (continued)
80
60
40
20
16
14
12
10
0
8
6
4
2
0
4.2
4.2
2.7
EFFICIENCY vs. Li+ BATTERY VOLTAGE
VOLTAGE (DRIVING SIX WHITE LEDs)
LEDs HAVE MISMATCHED V
LEDs HAVE MISMATCHED V
INPUT RIPPLE VOLTAGE vs. SUPPLY
6.4mA/LED
1.6mA/LED
16mA/LED
Li+ BATTERY VOLTAGE (V, TIME-WEIGHTED)
Li+ BATTERY VOLTAGE (V, TIME-WEIGHTED)
20.8mA/LED
16mA/LED
3.9
3.9
INPUT CURRENT vs. Li+ BATTERY
1.6mA/LED
VOLTAGE (DRIVING SIX LEDs)
20.8mA/LED
16mA/LED
6.4mA/LED
1.6mA/LED
3.8
(DRIVING SIX LEDs)
3.8
SUPPLY VOLTAGE (V)
3.2
3.7
3.7
F
3.6
F
LEDs HAVE
MISMATCHED V
3.6
3.7
3.5
3.5
3.4
3.4
F
3.0
3.0
4.2
17.0
16.8
16.6
16.4
16.2
16.0
15.8
15.6
15.4
15.2
15.0
100
100
90
80
70
60
50
40
90
80
70
60
50
40
30
20
10
0
4.2
2.7
2.7
EFFICIENCY vs. Li+ BATTERY VOLTAGE
LEDs HAVE MISMATCHED V
RGB MODULE: LUMEX SML-LX3632SISUGSBC
Li+ BATTERY VOLTAGE (V, TIME-WEIGHTED)
vs. INPUT VOLTAGE (RGB MODULE)
3.9
vs. INPUT VOLTAGE (16mA/LED)
6.4mA/LED
3.1
LED CURRENT MATCHING
I
I
I
I
3.8
(DRIVING SIX LEDs)
LED
LED
LED
LED
3.5
INPUT CURRENT
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
3.2
= 20.8mA
= 16mA
= 4.8mA
= 1.6mA
3.9
3.7
20.8mA/LED
4.3
F
3.6
3.7
4.7
3.5
5.1
3.4
3.0
4.2
5.5
5