Electronic component search and free download site. Transistors,MosFET ,Diode,Integrated circuits
English
한국어
日本語
русский
简体中文
español
部品番号
コンポーネント説明
MP1521EK データシートの表示(PDF) - Monolithic Power Systems
部品番号
コンポーネント説明
メーカー
MP1521EK
High Efficiency White LED Driver
Monolithic Power Systems
MP1521EK Datasheet PDF : 8 Pages
1
2
3
4
5
6
7
8
Monolithic Power Systems
Application Circuits
Figure 3: One String of Four (4) LEDs
MP1521
High Efficiency
White LED Driver
ON
EN
OFF
1
IN
SW
10
MP1521
2
EN
GND
9
3
REF
OLS
8
D1, B130
C
OUT
1µF
BRT
4
BRT
FB1
7
5
FB3
FB2
6
L
47µH
V
IN
C
IN
4.7µF
GND
White LEDs
20
Efficiency vs LED current using
47µH Toko D62CB Inductor
90
85
80
75
5
22
21
20
19
18
17
16
15
2.4
10
15
20
LED Current mA
Line regulation using
47µH Toko D62CB Inductor
3.0
3.6
V
IN
(V)
V
IN
= 4V
V
IN
= 3V
4.2
Figure 4: One String of Six (6) LEDs (Low inductor height for portables)
1
IN
L1
D1, B130
SW
10
ON
MP1521
C
OUT
1µF
EN
2
EN
OFF
GND
9
3
REF
OLS
8
BRT
4
BRT
FB1
7
White LEDs
5
FB3
FB2
6
20
V
IN
C
IN
4.7µF
GND
Efficiency vs V
IN
using 1.2mm High
Sumida CMD4D11 Inductor
85
80
75
70
2.5
3
3.5
4
4.5
V
IN
(V)
6.8µH
10µH
15µH
Line regulation using 1.2mm High
Sumida CMD4D11 Inductor
23.0
21.0
19.0
17.0
15.0
2.5
3
3.5
4
4.5
V
IN
(V)
6.8µH
10µH
15µH
MP1521 Rev 2.7 10/06/04
www.monolithicpower.com
6
Share Link:
datasheetq.com [
Privacy Policy
]
[
Request Datasheet
] [
Contact Us
]