- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄375163 > AAT1270 (Advanced Analogic Technologies, Inc.) 1A Step-Up Current Regulator for Flash LEDs PDF資料下載
參數(shù)資料
| 型號： | AAT1270 |
| 廠商： | Advanced Analogic Technologies, Inc. |
| 英文描述： | 1A Step-Up Current Regulator for Flash LEDs |
| 中文描述： | 第1A升壓電流調(diào)節(jié)器的閃光燈發(fā)光二極管 |
| 文件頁數(shù)： | 2/18頁 |
| 文件大?。?/td> | 734K |
| 代理商： | AAT1270 |
Pin Descriptions
Pin #
1
Symbol
CT
Function
Flash timer control input. Connect a capacitor between CT and AGND to set maximum dura-
tion for the flash pulse. A 47nF ceramic capacitor sets the flash timer to 1s. To disable the flash
timer, connect CT to AGND.
Enable and movie mode serial control input. EN/SET is the S
2
Cwire programming input to
adjust the movie mode current level to one of 16 different levels based on the maximum cur-
rent/7.3 set via the RSET pin.
Flash enable pin. A low-to-high transition on the FLEN pin initiates a flash pulse and starts the
flash timer.
Analog ground pin. Connect AGND to PGND, GND, and FLGND at a single point as close to
the AAT1270 as possible.
Power input. Connect IN to the input power supply voltage. Connect a 2.2μF or larger ceram-
ic capacitor from IN to PGND as close as possible to the AAT1270
Boost converter switching node. Connect a 1μH inductor between SW and IN.
Power ground pin. Connect PGND to AGND, GND, and FLGND at a single point as close to
the AAT1270 as possible.
Power output of the boost converter. Connect a 2.2uF or larger ceramic capacitor from OUT
to PGND as close as possible to the AAT1270. Connect OUT to the anode(s) of the flash
LED(s).
Ground pin. Connect GND to PGND, AGND, and FLGND at a single point as close to the
AAT1270 as possible.
Flash inhibit pin. FLINH is an active HIGH control input with an internal 200kΩ resistor to
AGND. A low-to-high transition on the FLINH pin reduces FLOUTA and FLOUTB output cur-
rents to the maximum (default) movie-mode current level for the duration of FLINH. Strobing
the FLINH pin low to high does not reset the flash timer.
Flash output B. Connect cathode of Flash LEDB to FLOUT B. For a single flash LED, connect
FLOUTB and FLOUTA together. For two flash LEDs, each output will conduct 50% of the total
flash output current.
Flash ground pin. Connect FLGND to PGND, GND, and AGND at a single point as close to
the AAT1270 as possible
Flash output A. Connect cathode of Flash LED A to FLOUTA. For a single flash LED, connect
FLOUTA and FLOUTB together. For two flash LEDs, each output will conduct 50% of the total
flash output current.
Flash current setting input. A 162kΩ resistor from RSET to AGND sets the maximum flash cur-
rent available at FLOUTA or FLOUTB to 500mA. Each FLOUTA and FLOUTB channel will con-
duct 50% of the maximum programmed current. The AAT1270’s flash-to-movie-mode ratio is
fixed at 7.3.
Exposed paddle (bottom); Connect EP to PGND as close as possible to the AAT1270.
2
EN/SET
3
FLEN
4
AGND
5
IN
6
7
SW
PGND
8
OUT
9
GND
10
FLINH
11
FLOUTB
12
FLGND
13
FLOUTA
14
RSET
EP
AAT1270
1A Step-Up Current Regulator for Flash LEDs
2
1270.2007.07.1.0
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AAT1270IFO-T1 | 1A Step-Up Current Regulator for Flash LEDs |
| AAT1275 | Boost Converter with USB Power Switch |
| AAT1275IRN-5.0-T1 | Boost Converter with USB Power Switch |
| AAT1275ITP-5.0-T1 | Boost Converter with USB Power Switch |
| AAT1276 | Boost Converter with USB Power Switch |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AAT1270_08 | 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:1A Step-Up Current Regulator for Flash LEDs |
| AAT1270IFO-T1 | 制造商:Advanced Analogic Tech 功能描述:AAT1270 Series 2 MHz 1A Step-Up Current Regulator for Flash LED-STDFN33-14 制造商:SKYWORKS SOLUTIONS 功能描述:AAT1270 Series 2 MHz 1A Step-Up Current Regulator for Flash LED-STDFN33-14 制造商:Skyworks Solutions Inc 功能描述:DC TO DC CONVERTER |
| AAT1271 | 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:1.5A Step-Up Current Regulator for Flash LEDs |
| AAT1271A | 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:1.5A Step-Up Current Regulator for Flash LEDs |
| AAT1271AIWO-T1 | 制造商:Skyworks Solutions Inc 功能描述:DC TO DC CONVERTER |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。