Universal charger
5 Legend Semicoducor Mei Zhou of China
IC LEg0753A/B
1 : ,,,、,
; ,,””, , ; 4.25V(),,VFLED; ,,,,COB; ...
Description
5 Legend Semicoducor Mei Zhou of China
IC LEg0753A/B
1 : ,,,、,
; ,,””, , ; 4.25V(),,VFLED; ,,,,COB; ,; !,DIP400mA ,300 mA ;COB 300mA ,200 mA ;
2
DIP COB
1 8 BTN ()
2 1 L3 L3
3 2 L2 L2 ()
4 4 L1 () L1
5 6 ADJ
6 5 GND ()
7 7 BTP ()
3 L2A L2 ()
8
9 VDD
1
5 Legend Semicoducor Mei Zhou of China
3
:(DIP-8)
:(DIP-8)
L1 (VF) 1.70V-2.10V( 2mA ) LED。R1(6.2k-20k)。VF,R1,R1 ±5%
2
5 Legend Semicoducor Mei Zhou of China
4 () 4.1 VDD ,Leg0753“” , L1 ,。 , 4.25V(), L2 ,L3 , ; 4.25V(,) L2 ,L3 , ,。, 4.25V() , L2 ,; 4.25V(),L2 ,,。 4.2 VDD ,L1、L2 ; BTP BTN 4.15V()。 4.3 VDD , Leg0753 (,),, , L1 ,L2 ,L3 ,; 4.25V(),L2 , L3 ,,; , L2 , L2 。 4.4 ,, BTP BTN 1.5V(,)Leg0753“”, 。,L1、L2 ,L3 ,, L1 , L2 ,。
2
5 Legend Semicoducor Mei Zhou of China
L1 L2 L3
-1mA(*) -1mA 0 100mA 1mA -
|VBTP-VBTN| <4.25V ≥4.25V 4.17V(**) <4.25V 4.25V <1V
:
L1 L2 L3
- -1mA(*) - -1mA -0 - 100mA - 1mA --
(*) ,( L1 ) (**) 1
|VBTP-VBTN| <4.25V ≥4.25V 4.17V(**) <4.25V 4.25V <1V
5 5.1 (,, GND 0 )
VDD VS ICHARGE VSHORT FOSC
VDD=7V
-
VDD=6V, |VBTP-VBTN|<3.5V VDD=6V, |VBTP-VBTN|: 2V→0V VDD=6V, |VBTP-VBTN|=3.5V
5.5 7 11 4.20 4.25 4.30 150 250 - 1.5 - -2 4
V V mA V Hz
5
5 Legend Semicoducor Mei Zhou of China
LEDVF:
,
LED VF
R
1.67V-1.69V 22K 4.15V-4.18V 1.70V-1.72V 20K 4.17V-4,22V
1.73V-1.74V 18K 4.19V-4...
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