SGM3142(EOL) [SGMICRO]
6-Channel Charge Pump White LED Driver with Low Dropout Current Source;
| 型号： | SGM3142(EOL) |
| 厂家： | 
Shengbang Microelectronics Co, Ltd |
| 描述： | 6-Channel Charge Pump White LED Driver with Low Dropout Current Source |
| 文件： | 总12页 (文件大小：637K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
SGM3142
6-Channel Charge Pump White LED
Driver with Low Dropout Current Source
GENERAL DESCRIPTION
FEATURES
The SGM3142 is a current-regulated white LED driver
with integrated low dropout current sources and a high
efficiency charge pump. The charge pump has an
automatically selectable 1×/1.5× fractional operation
mode. The SGM3142 is well suited for white LED
applications powered by a Li-Ion battery due to small
equivalent open-loop resistance in 1× mode. The
supply voltage operates from 2.7V to 5.5V.
● Input Voltage Range: 2.7V to 5.5V
● Support up to 6 LEDs at 20mA Each
● 16-Step LED Brightness Control through One-Wire
Interface
● 1× and 1.5× Charge Pump for High Conversion
Efficiency
● Automatic Charge Pump Mode Conversion
● Switching Frequency: 1MHz
● 1% Regulated LED Current Matching
● Built-in Soft-Start for Reducing Inrush Current
● Low Noise and Low EMI
The SGM3142 contains
a 4-bit digital-to-analog
converter for 16-step LED current control. The LED
current can be set between 1.25mA and 20mA by a
serial pulse input signal into the EN/SET pin. Built-in
soft-start circuitry avoids excessive inrush current
during startup and mode transition.
● Protection Features
Over-Current Protection
Under-Voltage Lockout
Thermal Shutdown
The SGM3142 is available in a Green TQFN-4×4-16L
package. It is specified over an ambient temperature
range of -40℃ to +85℃.
● Operating Temperature Range: -40℃ to +85℃
● Available in Green TQFN-4×4-16L Package
APPLICATIONS
White LED Backlighting
Color (RGB) Lighting
Digital Still Cameras
SG Micro Corp
JANUARY2013–REV. A.2
www.sg-micro.com
6-Channel Charge Pump White LED Driver
with Low Dropout Current Source
SGM3142
PACKAGE/ORDERING INFORMATION
SPECIFIED
TEMPERATURE
RANGE
PACKAGE
DESCRIPTION
ORDERING
NUMBER
PACKAGE
MARKING
PACKING
OPTION
MODEL
SGM3142
YTQE16
XXXXX
SGM3142
TQFN-4×4-16L
SGM3142YTQE16G/TR
Tape and Reel, 3000
-40℃ to +85℃
MARKING INFORMATION
NOTE: XXXXX = Date Code and Vendor Code.
X X X X X
Vendor Code
Trace Code
Date Code - Year
Green (RoHS & HSF): SG Micro Corp defines "Green" to mean Pb-Free (RoHS compatible) and free of halogen substances. If
you have additional comments or questions, please contact your SGMICRO representative directly.
OVERSTRESS CAUTION
ABSOLUTE MAXIMUM RATINGS
VIN to GND....................................................... -0.3V to 6.0V
The Other Pins to GND..................................... -0.3V to 6.0V
Package Thermal Resistance
Stresses beyond those listed in Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to
absolute maximum rating conditions for extended periods
may affect reliability. Functional operation of the device at any
conditions beyond those indicated in the Recommended
Operating Conditions section is not implied.
TQFN-4×4-16L, θJA.................................................... 50℃/W
Junction Temperature.................................................+150℃
Storage Temperature Range.......................-65℃ to +150℃
Lead Temperature (Soldering, 10s)............................+260℃
ESD Susceptibility
ESD SENSITIVITY CAUTION
HBM.............................................................................2000V
MM.................................................................................300V
This integrated circuit can be damaged if ESD protections are
not considered carefully. SGMICRO recommends that all
integrated circuits be handled with appropriate precautions.
Failureto observe proper handlingand installation procedures
can cause damage. ESD damage can range from subtle
performance degradation tocomplete device failure. Precision
integrated circuits may be more susceptible to damage
because even small parametric changes could cause the
device not to meet the published specifications.
RECOMMENDED OPERATING CONDITIONS
Operating Temperature Range.......................-40℃ to +85℃
DISCLAIMER
SG Micro Corp reserves the right to make any change in
circuit design, or specifications without prior notice.
SG Micro Corp
www.sg-micro.com
JANUARY 2013
2
6-Channel Charge Pump White LED Driver
with Low Dropout Current Source
SGM3142
PIN CONFIGURATION
(TOP VIEW)
EN/
SET
LED1
16
VIN
14
NC
13
15
1
2
3
4
LED2
LED5
LED6
LED3
GND
C2N
12
11
10
9
GND
C2P
VOUT
5
6
7
8
LED4 C1P C1N NC
TQFN-4×4-16L
PIN DESCRIPTION
PIN
NAME
FUNCTION
1
LED2 Current Source 2.
LED5 Current Source 5.
LED6 Current Source 6.
LED3 Current Source 3.
LED4 Current Source 4.
2
3
4
5
6
C1P
C1N
NC
Positive Terminal of the Flying Capacitor 1. Connect a 1μF ceramic capacitor close to the device.
Negative Terminal of the Flying Capacitor 1. Connect a 1μF ceramic capacitor close to the device.
No Connection.
7
8, 13
9
VOUT Output Voltage Source.
10
C2P
C2N
GND
VIN
Positive Terminal of the Flying Capacitor 2. Connect a 1μF ceramic capacitor close to the device.
11
Negative Terminal of the Flying Capacitor 2. Connect a 1μF ceramic capacitor close to the device.
12
Ground Pin.
14
Input Supply Pin.
15
16
EN/SET Active-High Enable Pin and Dimming Control.
LED1 Current Source 1.
Exposed Pad
GND
Exposed Pad. It should be soldered to PCB board and connected to GND.
SG Micro Corp
www.sg-micro.com
JANUARY 2013
3
6-Channel Charge Pump White LED Driver
with Low Dropout Current Source
SGM3142
ELECTRICAL CHARACTERISTICS
(VIN = 2.7V to 5.5V, CIN = COUT = C1 = C2 = 1μF, TA = +25℃, unless otherwise noted.)
PARAMETER
Input Power Supply
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Input Supply Voltage
VIN
2.7
1.8
5.5
2.5
V
V
Under-Voltage Lockout Threshold
Under-Voltage Lockout Hysteresis
VIN Rising
2.2
100
0.3
1
mV
IQ
IQ
1× Mode, VIN = 4V
1.5× Mode, VIN = 3.3V
VEN = 0.4V
1
Quiescent Power Supply Current
mA
3.5
10
Shutdown Current
ISHDN
0.1
μA
V
1× Mode to 1.5× Mode
Transition Voltage (VIN falling)
VF = 3.25V, IOUT = 120mA,
ILEDx = 20mA
VTS_×1.5
3.68
350
Hysteresis of Mode Transition
Output
mV
Output Current
ILEDx
VIN = 3.5V,100% Setting
VIN = 3.5V,100% Setting
18
-4
20
1
22
4
mA
%
Current Matching
EN/SET Logic
Logic-High Voltage
Threshold
VIH
VIL
1.5
0.5
V
V
Logic-Low Voltage
0.4
75
Low Time for Dimming
High Time for Dimming
TLO
THI
µs
µs
μA
μA
ms
0.25
0.01
0.01
0.3
High Current
Low Current
IIH
VIH = VIN
1
1
EN/SET
Current
IIL
VIL = GND
PWM Dimming
Low Time for Shutdown
Frequency
TSHDN
0.5
Oscillator Frequency
fOSC
1000
kHz
SG Micro Corp
www.sg-micro.com
JANUARY 2013
4
6-Channel Charge Pump White LED Driver
with Low Dropout Current Source
SGM3142
TYPICAL PERFORMANCE CHARACTERISTICS
CIN = COUT = C1 = C2 = 1μF, TA = +25℃, unless otherwise noted.
Efficiency vs. Input Voltage (6×20mA)
Efficiency vs. Input Voltage (6×10mA)
100
90
80
70
60
50
40
100
90
80
70
60
50
40
VDIODE = 3.25V
VDIODE = 3.1V
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
Input Voltage (V)
Input Voltage (V)
SG Micro Corp
www.sg-micro.com
JANUARY 2013
5
6-Channel Charge Pump White LED Driver
with Low Dropout Current Source
SGM3142
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
CIN = COUT = C1 = C2 = 1μF, TA = +25℃, unless otherwise noted.
IDIODE vs. Input Voltage (6×20mA)
IDIODE vs. Input Voltage (6×10mA)
130
125
120
115
110
105
100
80
75
70
65
60
55
50
VDIODE = 3.1V
VDIODE = 3.25V
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
Input Voltage (V)
Input Voltage (V)
Enable Voltage vs. Input Voltage
1.4
1.2
1.0
0.8
0.6
0.4
Rising
Falling
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
Input Voltage (V)
SG Micro Corp
www.sg-micro.com
JANUARY 2013
6
6-Channel Charge Pump White LED Driver
with Low Dropout Current Source
SGM3142
TYPICAL APPLICATION
C1
C2
1μF
1μF
6
7
10
11
C1P
C1N C2P
C2N
VBattery
14
9
16
1
VIN
LED1
LED2
LED3
LED4
LED5
LED6
+
CIN
1μF
VOUT
4
COUT
1μF
5
SGM3142
2
3
15
EN/SET
EN/SET
GND
12
Figure 1. For 6-WLED Application Circuit
SG Micro Corp
www.sg-micro.com
JANUARY 2013
7
6-Channel Charge Pump White LED Driver
with Low Dropout Current Source
SGM3142
TYPICAL APPLICATION CIRCUITS
C1
C2
1μF
1μF
6
7
10
11
C1P
C1N C2P
C2N
16
1
VBattery
14
9
LED1
VIN
LED2
LED3
LED4
LED5
LED6
+
CIN
1μF
4
VOUT
RB
RB
RB
RB
COUT
1μF
SGM3142
5
2
Resistor R is optional
3
15
EN/SET
EN/SET
GND
12
RB
RB
Resistor R is optional
Figure 2. Driving Two Groups of Paralleled White LEDs
C1
C2
1μF
1μF
6
7
10
11
C1P
C1N C2P
C2N
16
1
VBattery
14
9
LED1
VIN
LED2
LED3
LED4
LED5
LED6
+
CIN
1μF
4
VOUT
RB
RB
RB
RB
RB
RB
COUT
1μF
SGM3142
5
2
Photo Flash LED
3
Resistor R is optional
15
EN/SET
EN/SET
GND
12
Figure 3. Driving High Current Photo-Flash LED
SG Micro Corp
www.sg-micro.com
JANUARY 2013
8
6-Channel Charge Pump White LED Driver
with Low Dropout Current Source
SGM3142
REVISION HISTORY
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
JANUARY 2013 ‒ REV.A.1 to REV.A.2
Page
Added Recommended Land Pattern section......................................................................................................................................................12
Added Tape and Reel Information section................................................................................................................................................... 13, 14
MAY 2011 ‒ REV.A to REV.A.1
Page
Changed Package Description ..........................................................................................................................................................................All
Changes from Original (MAY 2010) to REV.A
Page
Changed from product preview to production data.............................................................................................................................................All
SG Micro Corp
www.sg-micro.com
JANUARY 2013
9
PACKAGE INFORMATION
PACKAGE OUTLINE DIMENSIONS
TQFN-4×4-16L
D
e
N9
D1
L
k
E
E1
N5
N16
N1
b
BOTTOM VIEW
TOP VIEW
2.1
0.85
2.1 2.9 4.6
A
A1
A2
SIDE VIEW
0.3
0.65
RECOMMENDED LAND PATTERN (Unit: mm)
Dimensions
In Millimeters
Dimensions
In Inches
Symbol
MIN
MAX
0.800
0.050
MIN
0.028
0.000
MAX
0.031
0.002
A
A1
A2
D
0.700
0.000
0.203 REF
0.008 REF
3.900
2.000
3.900
2.000
4.100
2.200
4.100
2.200
0.154
0.079
0.154
0.079
0.161
0.087
0.161
0.087
D1
E
E1
k
0.200 MIN
0.650 TYP
0.008 MIN
0.026 TYP
b
0.250
0.450
0.350
0.650
0.010
0.018
0.014
0.026
e
L
SG Micro Corp
www.sg-micro.com
TX00084.000
PACKAGE INFORMATION
TAPE AND REEL INFORMATION
REEL DIMENSIONS
TAPE DIMENSIONS
P2
P0
W
Q2
Q4
Q2
Q4
Q2
Q4
Q1
Q3
Q1
Q3
Q1
Q3
B0
Reel Diameter
P1
A0
K0
Reel Width (W1)
DIRECTION OF FEED
NOTE: The picture is only for reference. Please make the object as the standard.
KEY PARAMETER LIST OF TAPE AND REEL
Reel Width
Reel
Diameter
A0
B0
K0
P0
P1
P2
W
Pin1
Package Type
W1
(mm)
(mm) (mm) (mm) (mm) (mm) (mm) (mm) Quadrant
TQFN-4×4-16L
13″
12.4
4.30
4.30
1.10
4.0
8.0
2.0
12.0
Q1
SG Micro Corp
TX10000.000
www.sg-micro.com
PACKAGE INFORMATION
CARTON BOX DIMENSIONS
NOTE: The picture is only for reference. Please make the object as the standard.
KEY PARAMETER LIST OF CARTON BOX
Length
(mm)
Width
(mm)
Height
(mm)
Reel Type
Pizza/Carton
13″
386
280
370
5
SG Micro Corp
www.sg-micro.com
TX20000.000
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