SAMHOP Microelectronics Corp.
WHITE / BLUE LED DRIVER FOR LI- ION BATTERY APPLICATION
RECOMMENDED OPERATING CONDITIONS
Characteristic
Supply Voltage
Output Sink Current
Operating free-air
temperature range
Symbol
V
DD
ILED
Ta
Condition
-
-
-
Min.
3
-
-40
Typ.
-
-
-
Max.
5
25
+85
Unit
V
mA
C
DC ELECTRICAL CHARACTERISTICS
(V
DD
= 3.7V, Ta = 25
o
C, No Load, unless otherwise noted)
Apply
Pin
Characteristic
"H" Level
Input Voltage
"L" Level
"H" Level
Input Current
"L" Level
Short Low Pulse Width
Hold Time Between Pulse
Long Low Pulse Width
Minimum Disable Low Time
LED Dropout Voltage
Symbol
VIH
VIL
IIH
IIL
ts
tH
tL
td
VLEDL
Condition
-
-
-
-
-
-
-
-
ILEDn=20mA
-
ILEDn=20mA, Between IC
Between LED1~LED4 (Note 1)
Min.
2
-
-5.0
-5.0
9
10
125
480
-
-
-
-
-
-
Typ.
-
-
-
-
-
-
-
-
100
20
-
-
400
0.1
Max.
-
Unit
V
0.4
+5.0
µA
+5.0
30
-
175
-
120
-
+/-5
+/-3
600
-
µs
µs
µs
µs
mV
mA
LEDn
EN/CTRL
LED Maximum Sink Current ILEDmax
LED Sink Current Tolerance
LED Sink Current Deviation
Supply Current
Standby Supply Current
IDD
IDDSTBY
%
%
µA
VDD
-
-
µA
Note 1: I LEDn (max) -ILEDn (average) and ILEDn(average)-ILEDn(min)
Page 4
V.1.0 July 12,2007
SAMHOP [ SAMHOP MICROELECTRONICS CORP. ]
