|
TK11855F-G Datasheet, PDF (1/2 Pages) TOKO, Inc – Step-up DC-DC converter IC | |||
|
Step-up DC-DC converter IC
æå§åDC-DCã³ã³ãã¼ã¿IC
TK11855F-G
DESCRIPTION
The TK11855F-G is a PWM step-up DC-DC converter IC
designed for white LED driver applications suitable for 2 to 4
LEDs in series.
The white LEDs are connected in series and driven at a
constant current, resulting in uniform brightness and high
efficiency.
Its reference voltage is a very low 0.5V, achieving high
efficiency operation with the constant current output.
It can also be used in general applications as a step-up DC-
DC converter.
POWER&RF
TK11855F-Gã¯ç´åã«æ¥ç¶ããã2~4ç¯ã®ç½è²LEDé§åã«æ
é©ãªPWMæ¹å¼æå§åDC-DCã³ã³ãã¼ã¿ICã§ãã
ç½è²LEDç´åæ¥ç¶ãå®é»æµé§åæ§æã§ãè¼åº¦ã ã©ãå°ãªãã
é«å¹çã§åä½ãã¾ãã
åºæºé»å§ã¯0.5Vã¨ä½ããå®é»æµåºåã§é«å¹çã§ãã
ä¸è¬çãªæå§åDC-DCã³ã³ãã¼ã¿ã¨ãã¦ã使ç¨å¯è½ã§ãã
FEATURES
 Very High Efficiency 85%
 Operating Voltage Range 2.65V to 16V
 Operating Frequency 570kHz
 Maximum Duty Cycle 85%
 Built in Switching Transistor
 Built in Open-circuit protection
 On/off Control
 Very Small Inductor Available
 0.75mm Low Profile Package SON3024-8
 é«å¹ç85ï¼
 åä½é»å§ç¯å² 2.65V to 16V
 åä½å¨æ³¢æ° 570kHz
 æ大ãã¥ã¼ãã£ã¼ãµã¤ã¯ã« 85ï¼
 ã¹ã¤ããã³ã°ãã©ã³ã¸ã¹ã¿å
èµ
 åºåãªã¼ãã³ä¿è·åè·¯å
èµ
 On/offã³ã³ããã¼ã«æ©è½
 å°åã³ã¤ã«ä½¿ç¨å¯è½
 0.75mmèåããã±ã¼ã¸SON3024-8
APPLICATIONS
 The White LED Driving Systems: 2 to 4
For Back-lighting and Front-lighting, Flashlights etc.
Mobile Communication Systems:
Cellular Phone, PHS, DSC, PDA,
Computer Peripheral Equipment
Battery & Dry Cell Battery Systems
Portable Equipment
 Step-up DC-DC Converter (Voltage Supply)
Camera, Radio, Communications Equipment etc
 VCD Bias
 ç½è²LEDé§åã·ã¹ãã :
 ããã¯ã©ã¤ã, ããã³ãã©ã¤ã, ãã©ãã·ã¥ã©ã¤ããªã©
ã¢ãã¤ã«éä¿¡æ©å¨:
æºå¸¯é»è©±ãPHSãDSCãPDAã
ã³ã³ãã¥ã¼ã¿å¨è¾ºæ©å¨
ããããªã¼é§åæ©å¨
æºå¸¯æ©å¨
 æå§åDC-DCã³ã³ãã¼ã¿
ã«ã¡ã©ãã©ã¸ãªããã®ä»éä¿¡æ©
 VCDãã¤ã¢ã¹
PACKAGE OUTLINE
ORDERING INFORMATION
Part name
TK11855F-G
Package
SON3024-8
Marking Pin configuration
TK1 1
AB0
See next
page
Package code
F: SON3024-8
Ordering information
855FTL - G
Environment code
G: Lead free
Storage direction
TL: Left type
ABSOLUTE MAXIMUM RATINGS
Parameter
Operating Voltage Range
Operating Temperature Range
Power Dissipation
é
ç®
åä½é»å§ç¯å²
åä½æ¸©åº¦ç¯å²
許容æ¶è²»é»å
Symbol è¨å·
VOP
TOP
PD
Rating å®æ ¼
2.65 to 16.0
-30 to +85
600
Unit åä½
V
°C
mW
Remarks
Board mount
åè
åºæ¿å®è£
æ
2005 SPRING
|
▷ |