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PAM2701 の電気的特性と機能

PAM2701のメーカーはPower Analog Micoelectronicsです、この部品の機能は「4-Channel Regulated Charge Pump White LED Driver」です。


製品の詳細 ( Datasheet PDF )

部品番号
PAM2701
部品説明
4-Channel Regulated Charge Pump White LED Driver
メーカ
Power Analog Micoelectronics
ロゴ

Power Analog Micoelectronics ロゴ 




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PAM2701 Datasheet, PAM2701 PDF,ピン配置, 機能
PAM2701
4-Channel Regulated Charge Pump White LED Driver
Features
n Peak Efficiency: 90%
n Individual Current Regulation
n 3-bit Digital Output Control
n Two modes of operation:1x and 1.5x
n Current Matching with a Max Tolerance
of 3%
n Output Current up to 30mA per LED
n Total LED Current up to 4*30mA=120mA
n Fixed Frequency of 1MHz
n Open LED Protection
n Space Saving Package QFN 3mmx3mm
and QFN 4mmx4mm
n Pb-Free Package
Applications
n Cellular Phones
n LED Backlighting
n LCD Modules
n Handheld Devices
n Digital Cameras
n PDAs
n PMPs
n MP3 Players
Description
The PAM2701 is a 4-channel charge pump white
LED driver, capable of driving up to 4 LEDs in
parallel. The device operates in either 1x mode or
1.5x fractional mode, and it can switch from 1x
mode to 1.5x mode automatically when the input
voltage decreased. Its internal 4 current sink
regulators ensure both the LED current matching
and the brightness uniformity. The LED current
can be programmed by an external resistor, R ,SET
connected between the RSET pin and ground.
LED current of up to 30mA are supported by the
input supply voltage over a range of 2.7V to 5.5V,
making the device optimized for Li-Ion battery
applications.
The PAM2701 has a fixed switching frequency of
1MHz, allowing the use of very small value
ceramic capacitors. The enable input pin allows
the device to be set in shutdown mode, and the
current consumption is reduced to less than 1μA.
LED dimming can be done by several methods
including using a DC voltage to set the RSET pin
current, adding a switched resistor in parallel with
RSET, or applying a PWM signal to CTRx pin or EN
pin.
Typical Application
www.DataSheet4U.com
VIN
EN
CIN
1μF Control 0
Control 1
Control 2
RSET
24kΩ
1μF 1μF
8 9 11 10
C1+ C1- C2+ C2-
76
VIN
VOUT
1 EN PAM2701
2
CTR0
3
CTR1
4 CTR2
5 RSET
GND
LED1 16
15
LED2
14
LED3
13
LED4
12
Co
1μF
20mA
Power Analog Microelectronics,Inc
www.poweranalog.com
1
09/2008 Rev 1.3

1 Page





PAM2701 pdf, ピン配列
PAM2701
4-Channel Regulated Charge Pump White LED Driver
Pin Configuration & Marking Information
QFN 3mmx3mm/4mmx4mm
16 15 14 13
1 12
2
P2701
11
3
XAT YW
10
49
X: Internal Code
A: Assembly Code
T: Testing Code
Y: Year
W: Week
Pin Number
1
2
3
4
5
6
7
8
9
10
www.DataShee1t41U.com
12
13
14
15
16
5678
Name
EN
CTR0
CTR1
CTR2
RSET
VOUT
VIN
C1+
C1-
C2-
C2+
GND
LED4
LED3
LED2
LED1
Function
Enable Input, Active High
Digital Control Input 0
Digital Control Input 1
Digital Control Input 2
Set Resistance
Charge pump output connected to the LED anodes
Supply Voltage
Bucket Capacitor 1 Terminal
Bucket Capacitor 1 Terminal
Bucket Capacitor 2 Terminal
Bucket Capacitor 2 Terminal
Ground Reference
LED4 Cathode Terminal
LED3 Cathode Terminal
LED2 Cathode Terminal
LED1 Cathode Terminal
Power Analog Microelectronics,Inc
www.poweranalog.com
3
09/2008 Rev 1.3


3Pages


PAM2701 電子部品, 半導体
PAM2701
4-Channel Regulated Charge Pump White LED Driver
Typical Characteristics
VIN = 3.6V, EN = V ,IN RSET = 24kΩ, C =IN CO=1μF,TA = 25°C, unless otherwise noted.
1. Efficiency vs Input Voltage (4 LEDs)
2. Efficiency vs Output Current (4 LEDs)
100 100
90 90
80 80
70 70 VIN=4.2V
60
50 15mA per LED
20mA per LED
60
50
VIN=3.2V
40
2.4
3 3.6 4.2 4.8
Input Voltage (V)
5.4
40
10
40 70 100 130
Output Current (mA)
160
3. LED Current vs Input Voltage (4 LEDs)
24
22
20 20mA per LED
18
16
14
12 15mA per LED
10
2.8
3.1
www.DataSheet4U.com
3.4 3.7
Input Voltage (V)
4
4.3
5. Ground Current vs Input Voltage
3.00
2.50
2.00
1.5X Mode
1.50
1.00 1X Mode
0.50
0.00
2.8
3.1 3.4 3.7
Input Voltage (V)
4
4.3
4. Supply Current vs Input Voltage (4 LEDs)
140
120
100 20mA per LED
80
60
40 15mA per LED
20
0
2.4
3 3.6 4.2 4.8
Input Voltage (V)
5.4
6. Oscillator Frequency vs Input Voltage
1.1
1.05
1
0.95
0.9
2.8
3.2 3.6
Input Voltage (V)
4
4.4
Power Analog Microelectronics,Inc
www.poweranalog.com
6
09/2008 Rev 1.3

6 Page

合計 : 14 ページ
PDF ダウンロード

[ PAM2701 データシート.PDF ]

データシートを活用すると、その部品の主な機能と仕様を詳しく理解できます。 ピン構成、電気的特性、動作パラメータ、性能を確認してください。

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部品番号部品説明メーカ
PAM2701

4-Channel Regulated Charge Pump White LED Driver

Power Analog Micoelectronics
Power Analog Micoelectronics

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