Datasheet.kr   

KB3386 데이터시트 PDF




Kingbor Technology에서 제조한 전자 부품 KB3386은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


PDF 형식의 KB3386 자료 제공

부품번호 KB3386 기능
기능 400mA Buck/Boost Charge Pump LED Driver
제조업체 Kingbor Technology
로고 Kingbor Technology 로고


KB3386 데이터시트 를 다운로드하여 반도체의 전기적 특성과 매개변수에 대해 알아보세요.



전체 8 페이지수

미리보기를 사용할 수 없습니다

KB3386 데이터시트, 핀배열, 회로
Kingbor Technology Co.,Ltd
TEL:(86)0755-26508846 FAX:(86)0755-26509052
KB3386
400mA Buck/Boost Charge Pump LED Driver
FEATURES
Output Current up to 400mA
Up to 94% Efficiency in Torch Mode
Automatic Softstart Limits Inrush Current
Adjustable FLASH Mode
www.DataSheet4U.xco1mand x2 Automatic Modes for High Efficiency
Minimum External Components: No Inductors
High Frequency Operation: 2.4 MHz
Low 50mV Reference for low Loss Sensing
1+A Shutdown Current
PWM Dimming Control
Automatic Switchover Between Buck/Boost
Overvoltage Protection on Output
Overcurrent/Temerature Protection
Low Ripple and EMI
Space Saving 10-pin 3mm x 3mm DFN
Package
DESCRIPTION
The KB3386 is a current regulated charge pump ideal for
powering high brightness LEDs for camera flash applications.
The charge pump can be set to regulate two current levels for
FLASH and TORCH modes. The KB3386 automatically switches
modes between step-up and step-down ensuring that
LED current does not depend on the forward voltage. A low
current sense reference voltage (50mV) allows the use
of small 0603 current sensing resistors. The KB3386 is .
offered in 10-pin DFN package.
APPLICATIONS
White LED Torch/Flash for Cell
Phones, DSCs, and Camcorders
Generic Lighting/Flash/Strobe
Applications
White LED Backlighting
VIN 1
C1 2
C2 3
FLASH 4
EN 5
10
KB3386 9
8
10 Pin DFN
7
6
VOUT
PGND
SGND
IFB
ISET
Now Available in Lead Free Packaging
APPLICATION CIRCUIT
VIN
(2.7 - 5.5V)
CIN
2.2+F
CFC
0.47+F
TORCH/FLASH
ENABLE
1 VIN
VOUT 10
2 C1 KB3386 PGND 9
3 C2
SGND 8
4 FLASH
FB 7
5 EN
RSET 6
400mA FLASH
COUT
1+F
WLED
FB=150mV
RSET
106K 1
RSENSE
0.331
1




KB3386 pdf, 반도체, 판매, 대치품
Kingbor Technology Co.,Ltd
TEL:(86)0755-26508846 FAX:(86)0755-26509052
KB3386
400mA Buck/Boost Charge Pump LED Driver
TYPICAL PERFORMANCE CHARACTERISTICS
VIN = 3.6, Typical Application, TA = 25°C unless otherwise noted. D1 = AOT 2015HPW-1915B LED.
Torch Mode 150mA Iout
250
200
150
www.DataSheet4U.com100
Vf = 3.5V
Vf = 3.3V
50 Vf = 3.1V
Vf = 3.0V
0
3.0 3.2 3.4 3.6 3.8 4.0 4.2
Vin (V)
Figure 1. Output Current vs. Supply Voltage (CIN =
2.2+F, CFC = 0.47+F, COUT = 1.0+F
Flash Mode 400mA Iout
600
500
400
300 Vf = 4.1V
200 Vf = 3.8V
Vf = 3.5V
100
Vf = 3.2V
0
3.0 3.2 3.4 3.6 3.8 4.0 4.2
VIN (V)
Figure 2. Output Current vs. Supply Voltage (CIN =
2.2+F, CFC = 0.47+F, COUT = 1.0+F
100
90
80
70
60
50
40
3.0
Torch Mode 150mA Efficie
Vf = 3.5V
Vf = 3.3V
Vf = 3.1V
Vf = 3.0V
3.2 3.4 3.6 3.8 4.0
Vin (V
4.2
Figure 3. Efficiency vs. Supply Voltage (CIN = 2.2+F,
CFC = 0.47+F, COUT = 1.0+F)
Flash Mode 400mA Efficie
100
Vf = 4.1V
90 Vf = 3.8V
80 Vf = 3.5V
Vf = 3.2V
70
60
50
40
3.0 3.2 3.4 3.6 3.8 4.0 4.2
Vin (V
Figure 4. Efficiency vs. Supply Voltage (CIN = 2.2+F,
CFC = 0.47+F, COUT = 1.0+F)
Recommended PCB Layout
4

4페이지










KB3386 전자부품, 판매, 대치품
Kingbor Technology Co.,Ltd
TEL:(86)0755-26508846 FAX:(86)0755-26509052
KB3386
400mA Buck/Boost Charge Pump LED Driver
APPLICATION INFORMATION
The KB3386 charge pump circuit requires 3
capacitors: 4.7+F input, 1+F output and
0.47+F fly capacitor are typically recom-
mended. For the input capacitor, a larger
value of 10+F will help reduce input voltage
ripple for applications sensitive to ripple on
www.DataSheet4U.comthe battery voltage. All the capacitors
should be ceramic to obtain low ESR, which
improves bypassing on the input and output
and improves output voltage drive by reduc-
ing output resistance. X5R or X7R Ceramic
capacitors are recommended for most ap-
plications. A selection of recommended ca-
pacitors is included in Table 1. The input
and output capacitors should be located as
close to the VIN and VOUTpins as possible to
obtain best bypassing, and the returns
should be connected directly to the PGND pin
or to the thermal pad ground located under
the KB3386. The fly capacitor should be
located as close to the C1 and C2 pins as
possible.
The sense resistor Rsense is determined by
the value needed in the Torch mode for the
desired output current by the equation:
R = V / I where V = 50mV (Torch
SENSE
FB OUT
FB
Mode)
Once the RSENSE resistor has been selected
for Torch mode, the VFB voltage can be
selected for Flash mode using the following
equation:
VFB = IOUT *RSENSE (Flash Mode) where IOUT is
for Flash Mode
Next, the RSET resistor can be selected for
Flash mode using the following equation:
RSET = (1.26V/ VFB)*11.2K1 (Flash Mode)
For an example of 150mA Torch mode and
400mA Flash mode, the values RSENSE =
0.331, VFB = 135mV (Flash Mode), and RSET
= 106K1 are calculated. The power ob-
tained in the Flash mode would be:
PFLASH = VFB *IOUT = 133mV*400mA = 53mW.
The typical 0603 surface mount resistor is
rated at 1/10 Watt continuous power and
1/5 Watt pulsed power, more than enough
for this application. For other applications,
the PFLASH can be calculated from the resis-
tor size selected. The R resistor is
SENSE
recommended to be size 0603 for most
applications.
Part Reference
RSET
RSET
RSET
RSET
RSET
RSET
RSET
RSET
RSET
RSET
RSENSE
RSENSE
RSENSE
RSENSE
RSENSE
Value
68k
75k
82k
91k
100k
110k
120k
130k
140k
150k
0.22
0.27
0.33
0.39
0.47
Tolerance
5%
5%
5%
5%
5%
5%
5%
5%
5%
5%
5%
5%
5%
5%
5%
Size
0402
0402
0402
0402
0402
0402
0402
0402
0402
0402
0603
0603
0603
0603
0603
Manufacturers
any
any
any
any
any
any
any
any
any
any
Panasonic or Vishay
Panasonic or Vishay
Panasonic or Vishay
Panasonic or Vishay
Panasonic or Vishay
Table 2: Resistor values and sizes
7

7페이지


구       성 총 8 페이지수
다운로드[ KB3386.PDF 데이터시트 ]

당사 플랫폼은 키워드, 제품 이름 또는 부품 번호를 사용하여 검색할 수 있는

포괄적인 데이터시트를 제공합니다.


구매 문의
일반 IC 문의 : 샘플 및 소량 구매
-----------------------------------------------------------------------

IGBT, TR 모듈, SCR 및 다이오드 모듈을 포함한
광범위한 전력 반도체를 판매합니다.

전력 반도체 전문업체

상호 : 아이지 인터내셔날

사이트 방문 :     [ 홈페이지 ]     [ 블로그 1 ]     [ 블로그 2 ]



관련 데이터시트

부품번호상세설명 및 기능제조사
KB3386

400mA Buck/Boost Charge Pump LED Driver

Kingbor Technology
Kingbor Technology

DataSheet.kr       |      2020   |     연락처      |     링크모음      |      검색     |      사이트맵