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參數資料
| 型號： | CAT3606 |
| 元件分類： | LED驅動器 |
| 英文描述： | 6-Channel Low Noise Charge Pump White LED Driver |
| 中文描述： | 6通道低噪聲充電泵白光LED驅動器 |
| 文件頁數： | 1/11頁 |
| 文件大?。?/td> | 598K |
| 代理商： | CAT3606 |
2005 by Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
1
CAT3606
6-Channel Low Noise Charge Pump White LED Driver
Doc. No. 5009, Rev. B
I
White LED detect circuitry on all channels
I
Shutdown current less than 1
μ
A
I
Small ceramic capacitors
I
Soft start and current limiting
I
Short circuit protection
I
16-lead thin QFN package, 0.8mm
max height
DESCRIPTION
The CAT3606 controls up to four LEDs for the main
display and two LEDs for the sub-display in cellular
phones. The device is capable of operating in either
1x (LDO) mode or 1.5x charge pump mode. All LED
pin currents are regulated and tightly matched to
achieve uniformity of brightness across the LCD
backlight. An external resistor (R
SET
) sets the
nominal output current.
The device can deliver as much as 20mA per
channel during low voltage operation (3V), and
30mA per channel during nominal operation (3.3V).
A constant high-frequency switching scheme
FEATURES
I
Drives up to 4 main LEDs and 2 sub LEDs
I
Separate control for main and sub LEDs
I
Compatible with supply voltage of 3V to 5.5V
I
Power efficiency up to 90%
I
Output current up to 30mA per LED
I
High-frequency Operation at 1MHz
I
2 modes of operation 1x and 1.5x
APPLICATIONS
I
Cell phone main and sub-display backlight
I
Navigation
TYPICAL APPLICATION CIRCUIT
CAT3606
+
-
C1+
C2+
C1-
C2-
VIN
EN
ENM
ENS
RSET
VOUT
LED1
LED2
LED3
LED4
LED5
LED6
COUT
20mA
RSET
Li-Ion
Battery
ON/OFF
ENABLE
LED1-4
ENABLE
LED5-6
CIN
GND
Main Display
Sub Display
I
PDAs
I
Digital Cameras
(1MHz) provides low noise and allows the use of
very small value ceramic capacitors.
A “zero” quiescent current mode can be achieved
via the chip enable pin EN. The Main and Sub LEDs
each have their own dedicated ON/OFF control
pins (
ENM
,
ENS
). Dimming can be achieved using
either a DC voltage to control the R
SET
pin current,
or by applying a PWM signal on the
ENM
and
ENS
pins.
The device is available in a 16-lead thin QFN
package with a max height of 0.8mm.
相關PDF資料 |
PDF描述 |
|---|---|
| CAT3606HV4 | 6-Channel Low Noise Charge Pump White LED Driver |
| CAT3612 | Programmable 300mA Camera Flash LED Driver |
| CAT3612HV2-T2 | Programmable 300mA Camera Flash LED Driver |
| CAT3616HV4 | 6-Channel Charge Pump LED Driver with EZDimTM |
| CAT3616HV4-T2 | 6-Channel Charge Pump LED Driver with EZDimTM |
相關代理商/技術參數 |
參數描述 |
|---|---|
| CAT3606_08 | 制造商:CATALYST 制造商全稱:Catalyst Semiconductor 功能描述:6-Channel Low Noise Charge Pump White LED Driver |
| CAT3606HS4 | 制造商:CATALYST 制造商全稱:Catalyst Semiconductor 功能描述:6-Channel Low Noise Charge Pump White LED Driver |
| CAT3606HV4 | 制造商:CATALYST 制造商全稱:Catalyst Semiconductor 功能描述:6-Channel Low Noise Charge Pump White LED Driver |
| CAT3606HV4-GT2 | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:6-Channel Low Noise Charge Pump White LED Driver |
| CAT3606HV4-T2 | 功能描述:LED照明驅動器 Lo-Noise Charge Pump White LED RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:SO-16N |
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