MAX8630WETD25+T Maxim Integrated Products, MAX8630WETD25+T Datasheet - Page 7
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MAX8630WETD25+T
Manufacturer Part Number
MAX8630WETD25+T
Description
IC LED DRVR WHITE BCKLGT 14-TDFN
Manufacturer
Maxim Integrated Products
Type
Backlight, White LEDr
Datasheet
1.MAX8630XETD20T.pdf
(12 pages)
Specifications of MAX8630WETD25+T
Constant Current
Yes
Topology
PWM, Switched Capacitor (Charge Pump)
Number Of Outputs
5
Internal Driver
Yes
Type - Primary
Backlight
Type - Secondary
White LED
Frequency
1MHz
Voltage - Supply
2.7 V ~ 5.5 V
Voltage - Output
5V
Mounting Type
Surface Mount
Package / Case
14-TDFN Exposed Pad
Operating Temperature
-40°C ~ 85°C
Current - Output / Channel
25mA
Internal Switch(s)
Yes
Efficiency
93%
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Figure 1. Typical Applications Circuit with the MAX8630X
Figure 3. Functional Diagram
125mA 1x/1.5x Charge Pumps for 5 White LEDs
SERIAL DIMMING
SERIAL DIMMING
ENABLE MAIN
2.7V TO 5.5V
ON/OFF AND
ENABLE SUB
ON/OFF AND
2.7V TO 5.5V
INPUT
MAX8630W
ONLY
1μF
C
1μF
IN
GND
IN
ENS
(PWM)
ENM
(CPWM)
_______________________________________________________________________________________
0.6V
RSET
IN
GND
ENM
ENS
ERROR
AMP 2
C1P
CONTROL AND
MAX8630X
C2P
REFERENCE
MAIN CONTROL
SUB CONTROL
1μF
1μF
C1N
C2N
0.12V
0.6V
C1P
ERROR
AMP 1
LED1
LED2
LED3
LED4
LED5
OUT
1x/1.5x REGULATING
1μF
C1N
C1
CHARGE PUMP
+
–
C2P
1μF
1μF
C2
MAIN
SUB
C2N
SELECT
+
–
MIN
OVD
Figure 2. Typical Applications Circuit with the MAX8630W
+
–
in 3mm x 3mm TDFN
1.25V
DIRECT PWM
2.7V TO 5.5V
0.1μF
SIGNAL
1μF
+
–
IN
GND
CPWM
PWM
MAX8630W
MAX8630X
C1P
MAX8630W
C2P
+
–
1μF
1μF
C1N
C2N
LED1
LED2
LED3
LED4
LED5
OUT
( ) ARE FOR MAX8630W
LED1
LED2
LED3
LED4
LED5
OUT
D1
D2
D3
D4
D5
1μF
C
1μF
OUT
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