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SGM3133 の電気的特性と機能

SGM3133のメーカーはShengbang Microelectronicsです、この部品の機能は「4-Channel Charge Pump White LED Driver」です。


製品の詳細 ( Datasheet PDF )

部品番号 SGM3133
部品説明 4-Channel Charge Pump White LED Driver
メーカ Shengbang Microelectronics
ロゴ Shengbang Microelectronics ロゴ 




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SGM3133 Datasheet, SGM3133 PDF,ピン配置, 機能
SGM3133
4-Channel Charge Pump White LED
Driver with Low Dropout Current Source
GENERAL DESCRIPTION
The SGM3133 is a high efficiency and cost effective
charge pump white LED driver. It supports up to 4 white
LEDs and regulates a constant current for uniform
intensity. The part maintains the high efficiency by
utilizing a 1×/1.5× fractional charge pump and low
dropout current sources. The small equivalent 1× mode
open loop resistance and ultra-low dropout voltage of
current source extend the operating time of 1× mode
and optimize the efficiency of Li-ion battery in white
LED applications.
User can easily configure each LED current from
1.25mA to 20mA by a pulse dimming control. The
dimming of white LEDs current can be achieved by
applying a pulse signal to the EN/SET pin. There are
totally 16 steps of current could be set by users. The
operating voltage range is 2.7V to 5.5V. Internal
soft-start circuitry effectively reduces the in-rush
current while both start-up and mode transition.
The SGM3133 is available in Green TQFN-3×3-16L
package and is specified over an ambient temperature
range of -40to +85.
FEATURES
Input Voltage Range: 2.7V to 5.5V
Drives up to 4 LEDs at 20mA Each
16-Step Brightness Control
High Efficiency by Fractional Conversion with
1× and 1.5× Modes
Automatic Charge Pump Mode Selection
Switching Frequency: 1MHz
1% Typical LED Current Matching
Internal Soft-Start Limits Inrush Current
Low Input Noise and Low EMI
Over Current and Over Temperature Protection
Output Over Voltage Protection
Under-Voltage Lockout with Hysteresis
Available in Green TQFN-3×3-16L Package
APPLICATIONS
Mobile Phone, DSC, MP3
White LED Backlighting
LCD Display Supply
SG Micro Corp
www.sg-micro.com
REV. A. 2

1 Page





SGM3133 pdf, ピン配列
SGM3133
4-Channel Charge Pump White LED Driver
with Low Dropout Current Source
PIN CONFIGURATION (TOP VIEW)
LED3 LED2 LED1 VIN
16 15 14 13
LED4 1
12 EN/SET
N.C. 2
GND 3
GND
11 N.C.
10 GND
C1P 4
9 C2P
5 678
VIN C2N C1N VOUT
TQFN-3×3-16L
PIN DESCRIPTION
PIN
1
2,11
3,10
4
5,13
6
7
8
9
12
14
15
16
Exposed Pad
NAME
LED4
N.C.
GND
C1P
VIN
C2N
C1N
VOUT
C2P
EN/SET
LED1
LED2
LED3
GND
FUNCTION
Output Current for LED4.
No Internal Connection.
Ground.
Positive Input for the External Flying Capacitor C1. Connect a ceramic 1μF
capacitor close to the pins of the IC.
Power Input Voltage.
Negative Input for the External Flying Capacitor C2. Connect a ceramic 1μF
capacitor close to the pins of the IC.
Negative Input for the External Flying Capacitor C1. Connect a ceramic 1μF
capacitor close to the pins of the IC.
Output Voltage Source.
Positive Input for the External Flying Capacitor C2. Connect a ceramic 1μF
capacitor close to the pins of the IC.
Chip Enable (Active High) and Dimming Control.
Output Current for LED1.
Output Current for LED2.
Output Current for LED3.
Exposed pad should be soldered to PCB board and connected to GND.
SG Micro Corp
www.sg-micro.com
3


3Pages


SGM3133 電子部品, 半導体
SGM3133
4-Channel Charge Pump White LED Driver
with Low Dropout Current Source
TYPICAL PERFORMANCE CHARACTERISTICS
CIN = COUT = C1 = C2 = 1μF, TA = +25, unless otherwise noted.
Efficiency vs. Input Voltage
100
VDIODE = 3.25V
90
80
70
60
50
2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.5
Input Voltage (V)
Shutdown Current vs. Input Voltage
0.1
0.08
0.06
0.04
0.02
0
2.5 3 3.5 4 4.5 5 5.5
Input Voltage (V)
1.3
1.2
1.1
1.0
0.9
0.8
0.7
0.6
2.7
Enable Voltage vs. Input Voltage
Rising
Falling
3.1 3.5 3.9 4.3 4.7 5.1
Input Voltage (V)
5.5
SG Micro Corp
www.sg-micro.com
6

6 Page



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共有リンク

Link :


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