ELM900 Datasheet, PDF (2/2 Pages) List of Unclassifed Manufacturers – WHITE LED FLASHLIGHT DRIVER

ELM900x CMOS White LED flashlight driver
■Appliaction circuit
1cell 1LED
�����
�
�
����
�������
�
���
�����
���
���
2cell 2LED
�����
�
�
����
�������
�
�����
���
�����
���
■Electrical characteristics
Parameter
Power voltage
Current consumption
Output current of LX pin
Leakage current of LX pin
Oscillation frequency : 35kHz
Oscillation frequency : 55kHz
Duty ratio : switching 35kHz
Duty ratio : switching 55kHz
Symbol
Condition
Vdd
Iss Vdd=3.0V
Ilx Vdd=3.0V
Ilxl Vdd=LX=6.0V
Fosc Vdd=3.0V
Duty Vdd=3.0V
Top=25°C
Min. Typ. Max. Unit
1.0
5.0 V
7.0 14.0 μA
90.0
mA
1.0 μA
22
35
35
55
55
75
kHz
45
45
55
55
65
75
%
■Marking
SOT-89
��
��
a, b : Product IC code 90
c : the assembly lot No.1
Products
ELM900B
ELM900D
d : the assembly lot No.2
Products
ELM900B
ELM900D
Lot No.
0 to 9
A to Z (I, O, X expected)
Lot No.
A to Z (I, O, X expected)
0 to 9
2-2