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SEMTECH sc1592 手册

更新时间：2019-12-28 08:38:22 大小：293K 上传用户：IanLei查看TA发布的资源 标签：sC1592D电源管理 下载积分：2分 评价赚积分 （如何评价?） 打赏 收藏 评论(0) 举报

资料介绍

The SC1592 is a 3A low dropout high performance
linear voltage regulator, that provides a low voltage, high
current output with a minimum of external components,
utilizing dual supply configuration.
The SC1592 offers a wide input voltage range from 1.25V
to 16V and is ideal for applications that need to convert
down to 0.8V.
Additionally, the SC1592 is fully protected with an externally
programmable current limit, and thermal shutdown.
Also, there is an EN input which enables or shuts down
the device.
The SC1592 voltage regulator is available in 7-lead DDPAK
and SOIC-8L EDP packages.

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sc1592_电源转换.pdf 293K

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SC1592  
Low Dropout High Performance  
Adjustable Positive Voltage Regulator  
POWER MANAGEMENT  
Description  
Features  
The SC1592 is a 3A low dropout high performance ‹ Wide input range, VIN = 1.25V to 16V,  
linear voltage regulator, that provides a low voltage, high  
current output with a minimum of external components,  
utilizing dual supply configuration.  
VCNTL = 3V to 16V  
‹ 3A Guaranteed Output Current  
‹ 260mV (typ) @ 3A dropout voltage in dual supply  
mode  
The SC1592 offers a wide input voltage range from 1.25V  
to 16V and is ideal for applications that need to convert  
down to 0.8V.  
‹ 1% Initial Accuracy  
‹ Adjustable output voltage, down to 0.8V  
‹ Programmable current limiting and thermal  
shutdown  
‹ Fast transient response  
‹ Excellent line and load regulation  
‹ Power SO-8 and 7-lead DDPAK  
Additionally, the SC1592 is fully protected with an exter-  
nally programmable current limit, and thermal shutdown.  
Also, there is an EN input which enables or shuts down  
the device.  
Applications  
The SC1592 voltage regulator is available in 7-lead DDPAK  
and SOIC-8L EDP packages.  
‹ Low voltage logic supplies  
‹ Microprocessor and chipset supplies  
‹ Split plane microprocessor supplies  
‹ Advanced graphics cards supplies  
‹ Sound cards and auxiliary power supplies  
‹ SMPS post regulator  
Typical Application Circuit  
+3.3V Vcntl  
+1.8V Vout  
CNTL  
OUT  
C1  
1uF  
C3  
R2  
66.5  
47uF(cer)  
SC1592  
+2.5V Vin  
IN  
SENSE  
ILIM  
R2  
R3  
GND  
EN  
VOUT = (1+  
)• VREF  
C2  
R3  
53  
10uF  
VREF = 0.8V typ.  
R1  
100  
TTL  
Revision: January 27, 2004  
1
SC1592  
POWER MANAGEMENT  
Absolute Maximum Ratings  
Exceeding the specifications below may result in permanent damage to the device, or device malfunction. Operation outside of the parameters  
specified in the Electrical Characteristics section is not implied.  
Parameter  
Symbol  
VIN  
Maximum  
Units  
Power Input Voltage  
Control Input Voltage  
Output Current  
18  
V
V
VCNTL  
IOUT  
18  
5
A
Power Dissipation  
PD  
Internally Limited  
W
Thermal Resistance Junction to Ambient  
DDPAK (1sq. in.)  
29  
°C/W  
°C/W  
θJA  
SOIC-8L EDP (1sq. in.)  
36.5  
Thermal Resistance Junction to Case  
DDPAK  
3
θJC  
SOIC-8L EDP  
5.5  
Junction Temperature Range  
TJ  
-40 to +125  
°C  
°C  
°C  
kV  
Storage Temperature Range  
TSTG  
TLEAD  
ESD  
-65 to +150  
Lead Temperature (Soldering) 10 Sec.  
ESD Rating (Human Body Model)  
300  
2
Electrical Characteristics  
Values in bold indicate -40°C E<NTJ <C+NT1L25°C.  
Unless specified: VIN = 2.5V, V = V  
= 3.3V, VOUT = 1.8V, IOUT = 10mA, RLIM = 100Ω, TJ = TA = 25°C.  
Parameter  
Symbol  
Test Conditions  
VOUT = VREF  
Min  
3
Typ  
Max  
16  
Units  
V
Control Voltage  
Reference Voltage  
Control Pin Current  
VCNTL  
VREF  
VOUT = VREF  
792  
800  
3
808  
8
mV  
ICNTL_EN  
VCNTL = V = V = 16V  
VOUT =INVREF;ENIO = 0  
mA  
V
CNTL = VIN = VEN = 16V  
VOUT = VREF; IO = 3A  
24  
1
Control Pin Current in  
Shutdown  
ICNTL_DIS  
VCNTL = VIN = 16V  
VEN = 0  
5
µA  
VIN Line Regulation  
REG(LINE)  
REG(CNTL)  
2.5V ≤ VIN ≤ 16V  
0.01  
0.1  
0.1  
0.4  
%/V  
%/V  
VCNTL Line Regulation  
3.3V ≤ VCNTL ≤ 16V,  
V
OUT = VREF  
Load Regulation (1)  
Dropout Voltage  
REG(LOAD)  
10mA ≤ IOUT ≤ 2A, TJ = 25°C  
10mA ≤ IOUT ≤ 3A, -40 < TJ < 125°C  
IOUT = 2A; VOUT = 0.98 Vnom  
0.8  
1.4  
1.5  
3
%
%
VDO  
160  
260  
320  
520  
mV  
IOUT = 3A; VOUT = 0.98 Vnom  
2004 Semtech Corp.  
2

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