SGM6332 [SGMICRO]
3A, 18V, 1.4MHz Buck Converter;
| 型号： | SGM6332 |
| 厂家： | 
Shengbang Microelectronics Co, Ltd |
| 描述： | 3A, 18V, 1.4MHz Buck Converter |
| 文件： | 总10页 (文件大小：626K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
SGM6332
3A, 18V, 1.4MHz Buck Converter
GENERAL DESCRIPTION
FEATURES
The SGM6332 is a current-mode buck converter with
an internal power MOSFET switch. This device has a
fixed switching frequency of 1.4MHz. It can efficiently
provide up to 3A output load current over a wide input
supply range from 4.5V to 18V with excellent load and
line regulation responses.
● 4.5V to 18V Input Voltage Range
● 0.8V to 14V Adjustable Output Voltage Range
● 3A Output Current
● High Efficiency: Up to 91%
● Shutdown Supply Current: 18µA (MAX)
● 100mΩ Internal Power MOSFET Switch
● 1.4MHz Fixed Switching Frequency
● Cycle-by-Cycle Current Limit Protection
● Thermal Shutdown Protection
● Under-Voltage Lockout
In addition, the SGM6332 is an efficient, 91% peak
efficiency when the device is in operation. The
shutdown supply current consumed is less than 18µA.
Protection features include cycle-by-cycle current limit
and thermal shutdown. The device also includes an
internal soft-start and an external adjustable soft-start
function to limit the inrush current and prevent the
overshoot of output voltage.
● Support Low ESR Ceramic Capacitors
● -40℃ to +85℃ Operating Temperature Range
● Available in a Green SOIC-8 (Exposed Pad)
Package
The SGM6332 is available in a Green SOIC-8 (Exposed
Pad) package and also minimizes the external
components of the device to complete a 3A buck
DC/DC converter solution.
APPLICATIONS
Battery Chargers
Flat Panel TVs
Set-Top Boxes
Cigarette Lighter Powered Devices
Pre-Regulators
TYPICAL APPLICATION
R4
10Ω
or shorted
C5
10nF
L
BS
Enable
4.7μH
EN
IN
Output
3.3V/3A
SW
Input
4.5V to 18V
SGM6332
R1
33kΩ
SS
FB
COMP
GND
R2
10.5kΩ
COUT
47μF
C3
5.6nF
D1
B340A
CIN
22μF
C4
0.1μF
C6
Optional
R3
10kΩ
Figure 1. Typical Application Circuit
SG Micro Corp
JULY 2015 – REV. B
www.sg-micro.com
SGM6332
3A, 18V, 1.4MHz Buck Converter
PACKAGE/ORDERING INFORMATION
SPECIFIED
TEMPERATURE
RANGE
PACKAGE
DESCRIPTION
ORDERING
NUMBER
PACKAGE
MARKING
PACKING
OPTION
MODEL
SGM
6332YPS8
XXXXX
SOIC-8
(Exposed Pad)
SGM6332
-40°C to +85°C
SGM6332YPS8G/TR
Tape and Reel, 2500
MARKING INFORMATION
NOTE: XXXXX = Date Code and Vendor Code.
X X X X X
Vendor Code
Date Code - Week
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
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.
Supply Voltage, VIN............................................ -0.3V to 20V
SW Voltage, VSW.......................................-0.5V to VIN + 0.3V
Boost Voltage, VBS.............................VSW - 0.3V to VSW + 6V
All Other Pins....................................................... -0.3V to 6V
Package Thermal Resistance
SOIC-8 (Exposed Pad), θJA ....................................... 50℃/W
Junction Temperature.................................................+150℃
Storage Temperature Range.......................-65℃ to +150℃
Lead Temperature (Soldering, 10s)............................+260℃
ESD Susceptibility
ESD SENSITIVITY CAUTION
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.
HBM.............................................................................4000V
MM.................................................................................250V
RECOMMENDED OPERATING CONDITIONS
Operating Temperature Range...................... -40°C to +85°C
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
JULY 2015
2
SGM6332
3A, 18V, 1.4MHz Buck Converter
PIN CONFIGURATION
(TOP VIEW)
1
2
3
8
7
6
BS
IN
SS
EN
SW
GND
COMP
FB
4
5
SOIC-8 (Exposed Pad)
PIN DESCRIPTION
PIN
1
NAME
BS
FUNCTION
High-side Gate Drive Boost Input. A 10Ω resistor placed between SW and BS cap is strongly recommended to
reduce SW spike voltage.
Power Input. This pin powers the device and step-down converter switches. A large enough capacitor is used to
bypass this pin to GND to eliminate input’s noise.
2
IN
3
SW
Power Switching Output. Place a capacitor between SW and BS to supply the high-side switch.
4
5
GND
FB
Ground. (Exposed pad is connected to the backside of GND)
Feedback Input. Connect to the resistor divider between output and ground to set output voltage.
Compensation Node for regulation control loop compensation. An additional capacitor between COMP and GND may
be needed.
6
7
8
COMP
EN
Enable Input for regulator’s turn-on or turn-off. Drive EN high to turn on the regulator, and drive EN low to turn it off.
Output voltage is discharged when the IC is off. EN is disconnected in automatic startup.
Soft-Start Control Input. A capacitor is placed between SS and GND to set the soft-start period. Disconnect the SS to
disable the soft-start function.
SS
Exposed
Pad
GND
Power Ground Exposed Pad. Must be connected to GND plane.
SG Micro Corp
JULY 2015
www.sg-micro.com
3
SGM6332
3A, 18V, 1.4MHz Buck Converter
ELECTRICAL CHARACTERISTICS
(VIN = 12V, TA = +25°C, unless otherwise noted.)
PARAMETER
Input Voltage Range
SYMBOL
VIN
CONDITIONS
MIN
4.5
TYP
MAX
18
UNITS
V
Feedback Voltage
VFB
0.776
0.8
10
0.824
18
V
Shutdown Supply Current
Quiescent Supply Current
High-side Switch (M1) On-Resistance
Low-side Switch (M2) On-Resistance
Error Amplifier Transconductance
Error Amplifier Voltage Gain
SW Leakage Current
ISHDN
IQ
VEN = 0V
μA
mA
mΩ
Ω
VEN = 2.6V, VFB = 1.0V
0.8
1.7
RONH
RONL
GEA
AEA
100
10
∆VFB = ±12.5mV
500
800
10000
1120
1
μA/V
V/V
μA
A
ILSW
ILIM
VEN = 0V, VSW = 0V
Current Limit
4.2
6.2
80
0
Current Sense to COMP Transconductance
Maximum Duty Cycle
GCS
DMAX
DMIN
VIH
A/V
%
VFB = 0.6V
VFB = 1V
Minimum Duty Cycle
%
EN Threshold Voltage
1.2
V
EN Threshold Voltage
VIL
0.4
2
V
EN Pull-Up Current
VEN = 0V
0.8
1.4
1.4
140
3.8
230
10
μA
MHz
kHz
V
Oscillator Frequency
fOSC
1.15
1.6
Short-Circuit Oscillator Frequency
Under-Voltage Lockout Threshold
Under-Voltage Lockout Threshold Hysteresis
Soft-Start Period
VFB = 0V
VIN Rising
3.5
4.2
mV
ms
℃
CSS = 0.1μF
Thermal Shutdown Temperature
TSHDN
160
SG Micro Corp
www.sg-micro.com
JULY 2015
4
SGM6332
3A, 18V, 1.4MHz Buck Converter
TYPICAL PERFORMANCE CHARACTERISTICS
VIN = 12V, CIN = 22µF, COUT = 47µF and TA = +25°C, unless otherwise noted.
Efficiency vs. Load Current
VOUT = 5.0V
Feedback Voltage vs. Temperature
100
90
80
70
60
50
40
30
0.83
0.82
0.81
0.80
0.79
0.78
0.77
VOUT = 3.3V
V
IN = 12V
-50
-25
0
25
50
75
100
0
0.5
1
1.5
2
2.5
3
3.5
Temperature (℃)
Load Current (A)
Steady State Operation
Steady State Operation
AC Coupled
AC Coupled
VOUT
VOUT
VSW
VSW
IL
VOUT = 1.8V, IOUT = 1.5A
IL
VOUT = 1.8V, IOUT = 3A
Time (400ns/div)
Time (400ns/div)
Shutdown Through Enable
Shutdown Through Enable
VEN
VEN
VOUT
VOUT
VSW
VSW
IL
VOUT = 3.3V, IOUT = 3A
(Resistance Load)
VOUT = 3.3V, IOUT = 1.5A
(Resistance Load)
IL
Time (200μs/div)
Time (200μs/div)
SG Micro Corp
www.sg-micro.com
JULY 2015
5
SGM6332
3A, 18V, 1.4MHz Buck Converter
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
VIN = 12V, CIN = 22µF, COUT = 47µF and TA = +25°C, unless otherwise noted.
Startup through Enable
Startup through Enable
VEN
VEN
C4 = 0.1μF,
VOUT = 3.3V, IOUT = 3A
(Resistance Load)
C4 = 0.1μF,
VOUT = 3.3V, IOUT = 1.5A
(Resistance Load)
VOUT
VOUT
VSW
VSW
IL
IL
Time (4ms/div)
Time (4ms/div)
Startup through Enable
Startup through Enable
VEN
VEN
No Soft-Start Cap,
VOUT = 3.3V, IOUT = 3A
(Resistance Load)
No Soft-Start Cap,
OUT = 3.3V, IOUT = 1.5A
(Resistance Load)
V
VOUT
VSW
IL
VOUT
Time (400μs/div)
Time (400μs/div)
Load Transient Response
AC Coupled
VOUT
IL
ILOAD
VOUT = 3.3V, IOUT = 1A to 2A Step
Time (100μs/div)
SG Micro Corp
www.sg-micro.com
JULY 2015
6
SGM6332
3A, 18V, 1.4MHz Buck Converter
REVISION HISTORY
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
JULY 2015 ‒ REV.A.4 to REV.B
Page
Changed Typical Application and Input Capacitor............................................................................................................................................1, 8
JULY 2014 ‒ REV.A.3 to REV.A.4
Page
Added a 10Ω resistor between SW and BS pin in application circuit .......................................................................................................... 1, 3, 10
APRIL 2014 ‒ REV.A.2 to REV.A.3
Page
Updated typical application, shutdown supply current and electrical characteristics.........................................................................................1, 4
JANUARY 2013 ‒ REV.A.1 to REV.A.2
Page
Updated Soft-Start section...................................................................................................................................................................................7
NOVEMBER 2012 ‒ REV.A to REV.A.1
Page
Updated Electrical Characteristic section.............................................................................................................................................................4
Changes from Original (OCTOBER 2012) to REV.A
Page
Changed from product preview to production data.............................................................................................................................................All
SG Micro Corp
www.sg-micro.com
JULY 2015
7
PACKAGE INFORMATION
PACKAGE OUTLINE DIMENSIONS
SOIC-8 (Exposed Pad)
3.302
D
e
E1
E
2.413 5.56
E2
1.91
b
D1
1.27
0.61
RECOMMENDED LAND PATTERN (Unit: mm)
L
A
A1
c
θ
A2
Dimensions
In Millimeters
Dimensions
In Inches
Symbol
MIN
MAX
MIN
MAX
0.067
0.004
0.061
0.020
0.010
0.201
0.134
0.157
0.244
0.099
A
A1
A2
b
1.700
0.100
1.550
0.510
0.250
5.100
3.402
4.000
6.200
2.513
0.000
1.350
0.330
0.170
4.700
3.202
3.800
5.800
2.313
0.000
0.053
0.013
0.007
0.185
0.126
0.150
0.228
0.091
c
D
D1
E
E1
E2
e
1.27 BSC
0.050 BSC
L
0.400
0°
1.270
8°
0.016
0°
0.050
8°
θ
SG Micro Corp
www.sg-micro.com
TX00013.000
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
SOIC-8
(Exposed Pad)
13″
12.4
6.40
5.40
2.10
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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