Datasheet

MAX8630W/MAX8630X
125mA 1x/1.5x Charge Pumps for 5 White LEDs
in 3mm x 3mm TDFN
_______________________________________________________________________________________ 5
STARTUP AND SHUTDOWN
MAX8630W/X toc11
1ms/div
5V/div
2V/div
0
0
0
0
100mA/div
100mA/div
V
ENM
AND
V
ENS
V
OUT
I
IN
I
OUT
MAIN STARTUP AND SHUTDOWN
WITH SUB ENABLED
MAX8630W/X toc12
1ms/div
5V/div
2V/div
100mA/div
100mA/div
V
ENM
V
OUT
I
IN
I
OUT
0
0
0
0
STARTUP AND DIMMING
MAX8630W/X toc13
20ms/div
5V/div
1V/div
20mA/div
V
ENM
AND
V
ENS
V
OUT
I
OUT
Typical Operating Characteristics (continued)
(V
IN
= 3.6V, ENM = ENS = IN, T
A
= +25°C, unless otherwise noted.)
LINE-TRANSIENT RESPONSE WITH MODE CHANGE
(V
IN
= 3.8V TO 3.2V TO 3.8V)
MAX8630W/X toc14
200μs/div
1V/div
500mV/div
50mA/div
0
0
V
IN
V
OUT
I
OUT
Pin Description
PIN
M A X8 6 3 0 XM A X8 6 3 0 W
N A M EF U N C T IO N
11G N D
G r ound . C onnect G N D to system g r ound and the i np ut b yp ass cap aci tor as
cl ose to the IC as p ossi b l e. C onnect GN D to the exp osed p ad d i r ectl y und er
the IC .
22C 1N
Tr ansfer C ap aci tor 1 N eg ati ve C onnecti on. C onnect a 1µF cer am i c cap aci tor
fr om C 1P to C 1N .
33IN
S up p l y V ol tag e Inp ut. C onnect a 1µF cer am i c cap aci tor fr om IN to GN D . The
i np ut vol tag e r ang e i s 2.7V to 5.5V .
44C 2N
Tr ansfer C ap aci tor 2 N eg ati ve C onnecti on. C onnect a 1µF cer am i c cap aci tor
fr om C 2P to C 2N .