SP7652 반도체 회로 부품 판매점
6A 28V 600KHz Synchronous Step Down Regulator
|
|
 Exar |
July 2012
SP7652
PowerbloxTM
6A 28V 600KHz Synchronous Step Down Regulator
Rev. 2.0.0
GENERAL DESCRIPTION
The SP7652 is a synchronous voltage mode
PWM step down (buck) regulator capable of a
constant output current up to 6Amps. A wide
2.5V to 28V power input voltage range, with
the required 5V biasing voltage, allows
conversions from industry standard 5V, 12V,
18V and 24V power rails.
With a 600kHz constant operating frequency
and integrated high and low side switch, the
SP7652 reduces the overall component count
and solution footprint. In addition to a 1%
output setpoint accuracy, this device provides
high efficiency, low ripple and excellent line
and load regulation. An enable function and
soft start feature allow for controlled power up
sequencing implementation.
Built-in Under voltage lockout (VLO) on both
VCC and VIN, outputs short-circuit and over
temperature protection insure safe operation
under abnormal operating conditions.
The SP7652 is offered in a RoHS compliant,
lead free 26-pin 7mmx4mm DFN package.
APPLICATIONS
Distributed Power Architectures
Point of Load Converters
Power Supply Modules
FPGAs, DSPs and Processors Supplies
FEATURES
6A Continuous Current
2.5V-28V Power Input Voltage Rail
5V Biasing voltage
0.8V Min. Output Voltage – 1% Accuracy
PWM Voltage Mode Control
600kHz Fixed Synchronous Operations
Low RDSON Power Switches
Greater than 92% Efficiency
Type II & III Compensations Support
Programmable Soft Start
UVLO on both VIN and VCC
Pre-biased Output Start-Up
Over Temperature & Short Circuit
Protection/Auto-Restart
RoHS Compliant Lead Free 26-Pin DFN
US Patent #6,922,041
TYPICAL APPLICATION DIAGRAM
Fig. 1: SP7652 Application Diagram
Exar Corporation
48720 Kato Road, Fremont CA 94538, USA
www.exar.com
Tel. +1 510 668-7000 – Fax. +1 510 668-7001
SP7652
PowerbloxTM
6A 28V 600KHz Synchronous Step Down Regulator
ABSOLUTE MAXIMUM RATINGS
These are stress ratings only and functional operation of
the device at these ratings or any other above those
indicated in the operation sections of the specifications
below is not implied. Exposure to absolute maximum
rating conditions for extended periods of time may affect
reliability.
VIN ........................................................................ 30V
VCC ......................................................................... 7V
ILX ........................................................................ 10A
BST ...................................................................... 35V
LX-BST........................................................-0.3V to 7V
LX ...............................................................-1V to 30V
All other pins ...................................-0.3V to (VCC+0.3)V
Storage Temperature .............................. -65°C to 150°C
Power Dissipation ................................ Internally Limited
Lead Temperature (Soldering, 10 sec).................... 300°C
ESD Rating (HBM - Human Body Model) ............. 2kV HBM
OPERATING RATINGS
Input Voltage Range VCC ..............................4.5V to 5.5V
Input Voltage Range VIN.................................. 3V to 28V
Junction Temperature Range ................. -40°C to +125°C
Thermal Resistance θJC ........................................ 5°C/W
Thermal Resistance θJA ...................................... 36°C/W
ELECTRICAL SPECIFICATIONS
Specifications with standard type are for an Operating Junction Temperature of TJ = TA = 25°C only; limits applying over the
full Operating Junction Temperature range are denoted by a “•”. Minimum and Maximum limits are guaranteed through test,
design, or statistical correlation. Typical values represent the most likely parametric norm at TJ = TA = 25°C, and are
provided for reference purposes only. Unless otherwise indicated, VCC = 4.5V to 5.5V, VIN = 3.0V to 28V, BST = LX + 5V,
LX = GND = 0V, UVIN = 3V, CVCC = 1µF, CCOMP = 0.1µF, CSS = 50nF, TA= –40°C to 85°C, TJ = –40°C to 125°C.
Parameter
Quiescent Current
VCC Supply Current (No
Switching)
VCC Supply Current (Switching)
BST Supply Current (No
Switching)
BST Supply Current (Switching)
Protection: UVLO
VCC UVLO Start Threshold
VCC UVLO Hysteresis
UVIN Start Threshold
UVIN Hysteresis
UVIN Input Current
Error Amplifier Reference
Error Amplifier Reference
Error Amplifier Reference Over
Line and Temperature
Error Amplifier
Transconductance
Error Amplifier Gain
COMP Sink Current
COMP Source Current
VFB Input Bias Current
Internal Pole
COMP Clamp
COMP Clamp Temp. Coefficient
Min.
4.00
100
2.3
200
0.792
0.788
Typ.
1.5
11
0.2
8
4.25
200
2.5
300
0.800
0.800
6
60
150
150
50
4
2.5
-2
Max.
Units
Conditions
3 mA
VFB = 0.9V
15 mA •
0.4 mA
VFB = 0.9V
12 mA •
4.5
300
2.65
400
1
v
mV
V•
mV
µA UVIN = 3.0V
0.808
0.812
200
V
2x Gain Config., Measure VFB; VCC=5V,
T=25°C
V•
mA/V
dB
µA
µA
nA
MHz
V
mV/°C
No Load
VFB = 0.9V, COMP = 0.9V
VFB = 0.7V, COMP = 2.2V
VFB = 0.8V
VFB = 0.7V, TA=25°C
© 2012 Exar Corporation
2/15
Rev. 2.0.0
|
PDF 파일 내의 페이지 : 총 15 페이지
제조업체: Exar
( exar )
SP7652 regulator
데이터시트 다운로드 :
[ SP7652.PDF ]
[ SP7652 다른 제조사 검색 ]
국내 전력반도체 판매점
상호 : 아이지 인터내셔날
전화번호 : 051-319-2877
[ 홈페이지 ]
IGBT, TR 모듈, SCR, 다이오드모듈, 각종 전력 휴즈
( IYXS, Powerex, Toshiba, Fuji, Bussmann, Eaton )
전력반도체 문의 : 010-3582-2743
관련 데이터시트
SP7650
Wide Input Voltage Range 3A / 300kHz / Buck Regulator - Sipex
SP7651
Wide Input Voltage Range 3A / 900kHz / Buck Regulator - Sipex
SP7652
6A 28V 600KHz Synchronous Step Down Regulator - Exar
SP7652
Wide Input Voltage Range 6A / 600kHz / Buck Regulator - Sipex
SP7653
Wide Input Voltage Range - Sipex Corporation
SP7655
Wide Input Voltage Range 8A / 300kHz / Buck Regulator - Sipex
SP7656
29V Non-Synchronous Buck Converter - Exar