Datasheet.kr   

APW7207A PDF 데이터시트 : 부품 기능 및 핀배열

부품번호 APW7207A
기능 Step-Up Converter
제조업체 ANPEC
로고 ANPEC 로고 


전체 18 페이지

		

No Preview Available !

APW7207A 데이터시트, 핀배열, 회로
APW7207/A
1MHz, High-Efficiency, Step-Up Converter for White LEDs
Features
General Description
Wide Input Voltage from 2.5V to 6V
The APW7207/A is a current-mode and fixed frequency
0.2V Reference Voltage
Fixed 1MHz Switching Frequency
boost converter with an integrated N-FET to drive up to 10
white LEDs in series.
The series connection allows the LED current to be iden-
High Efficiency up to 88%
tical for uniform brightness. Its low on-resistance of N-
100Hz to 200kHz PWM Brightness Control Fre- FET and feedback voltage reduces power loss and
achieves high efficiency. Fast 1MHz current-mode PWM
quency
operation is available for input and output capacitors and
Open-LED Protection
a small inductor while minimizing ripple on the input
Under-Voltage Lockout Protection
Over-Temperature Protection
supply. The OVP pin monitors the output voltage and stops
switching if exceeds the over-voltage threshold. An inter-
nal soft-start circuit eliminates the inrush current during
<1µA Quiescent Current During Shutdown
start-up.
TSOT-23-6A and TDFN2x2-8 Packages
Lead Free and Green Devices Available
The APW7207/A also integrates under-voltage lockout,
over-temperature protection, and current limit circuits.
The APW7207/A is available in TSOT-23-6A and TDFN2x2-
(RoHS Compliant)
8 packages.
Applications
Pin Configuration
White LED Display Backlighting
Cell Phone and Smart Phone
PDA, PMP, and MP3
Digital Camera
Simplified Application Circuit
VIN
C1
2.2µF
OFF ON
L1
22µH
VIN LX
GND OVP
EN FB
VOUT
C2
1µF Up tp 10
WLEDs
R1
10
LX 1
GND 2
FB 3
6 VIN
5 OVP
4 EN
TSOT-23-6A
(Top View)
GND 1
VIN 2
OVP 3
EN 4
8 LX
7 NC
6 GND
5 FB
TDFN 2x2-8
Top View
ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and
advise customers to obtain the latest version of relevant information to verify before placing orders.
Copyright © ANPEC Electronics Corp.
Rev. A.7 - Nov., 2012
1
www.anpec.com.tw




APW7207A pdf, 반도체, 판매, 대치품
APW7207/A
Typical Operating Characteristics
(Refer to figure 1 in the section “Typical Application Circuits”, VIN=3.6V, TA=25oC, 10WLEDs unless otherwise specified)
Efficiency vs. WLED Current
95
WLED Current vs. PWM Duty Cycle
20
90 18
85
80
75
70
65
60
55
50
0
VIN=3.3V
5
VIN=3.6V
VIN=5V
VIN=4.2V
10 WLEDs 33V@20mA
η=POUT/PIN
10 15 20 25 30
16
14
12
10
8
6
4
2
0
0
100Hz
20 40
1kHz
60
100kHz
80 100
WLED Current vs. Supply Voltage
21.0
20.8
20.6
20.4
20.2
20.0
19.8
19.6
19.4
19.2
19.0
2.5 3 3.5 4 4.5 5 5.5 6
Maximum Duty Cycle vs. Supply
Voltage
100
90
80
70
60
50
40
2.5 3 3.5 4 4.5 5 5.5 6
Switching Frequency vs. Supply
Voltage
1.2
1.1
1
0.9
0.8
0.7
0.6
0.5
0.4
2.5
3
3.5 4
4.5 5
5.5 6
Switch ON Resistance vs. Supply
Voltage
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
2.5 3 3.5 4 4.5 5 5.5 6
Copyright © ANPEC Electronics Corp.
Rev. A.7 - Nov., 2012
4
www.anpec.com.tw

4페이지










APW7207A 전자부품, 판매, 대치품
APW7207/A
Typical Application Circuits
VIN
C1
2.2µF
OFF ON
L1
22µH
VIN LX
GND OVP
APW7207/A
EN FB
VOUT
C2
1µF UP to 10
WLEDs
R1
10
Figure 1. Typical 10 WLEDs Application
VIN
C1
2.2µF
L1
22µH
VIN LX
100Hz~200k Hz
GND OVP
APW7207/A
Duty=100%, I LED=20mA
Duty=0%, LED off
E
N
FB
VOUT
C2
1µF UP to 10
WLEDs
R1
10
Figure 2. Brightness control using a PWM
signal applies to EN
VIN
C1
10µF
Enable(EN)
PWM Brightness
Control
100Hz~200k Hz
Duty=100%, I LED1/2 =20mA
Duty=0%, LED off
Q1
BSS138
R3
1M
R2
100k
L1
10µH
VIN
L
X
GND
OVP
APW7207/A
EN FB
C2
10µF
VOUT
6S2P
WLEDs
I LED1
I LED2
R1
5.1
Figure 3. Separate Enable and PWM Brightness Control Using a MOSFET
VIN
4.5V~6V
C1
10µF
OFF ON
L1
10µH
VIN LX
GND
OVP
APW720 7/A
EN FB
C2
10µF
VOUT
9 Strings
total
R1
1.1
Figure 4. Circuit for driving 27 WLEDs
Copyright © ANPEC Electronics Corp.
Rev. A.7 - Nov., 2012
7
www.anpec.com.tw

7페이지



구       성총 18 페이지
다운로드[ APW7207A.PDF 데이터시트 ]
구매 문의
일반 IC 문의 : 샘플 및 소량 구매
-----------------------------------------------------------------------

전력 반도체 판매 ( IGBT, TR 모듈, SCR, 다이오드 모듈 )

휴대전화 : 010-3582-2743


상호 : 아이지 인터내셔날

전화번호 : 051-319-2877, [ 홈페이지 ]



링크공유

링크 :

관련 데이터시트

부품번호상세설명 및 기능제조사
APW7207

Step-Up Converter

ANPEC
ANPEC
APW7207A

Step-Up Converter

ANPEC
ANPEC

추천 데이터시트

부품번호상세설명 및 기능제조사
CQ1565RT

FSCQ1565RT, Green Mode Fairchild Power Switch. In general, a Quasi-Resonant Converter (QRC) shows lower EMI and higher power conversion efficiency compared to conventional hard-switched converter with a fixed switching frequency.

Fairchild
Fairchild
KF16N25D

MOSFET의 기능은 N Channel MOS Field effect transistor입니다. This planar stripe MOSFET has better characteristics, such as fast switching time, low on resistance, low gate charge and excellent avalanche characteristics. It is mainly suitable for DC/DC Converters and switching mode power supplies.( Vdss=250V, Id=13A )

KEC
KEC

DataSheet.kr    |   2018   |  연락처   |  링크모음   |   검색  |   사이트맵