SS432GNBTR [SSC]
Adjustable Precision Shunt Regulator; 可调式精密并联稳压器型号: | SS432GNBTR |
厂家: | SILICON STANDARD CORP. |
描述: | Adjustable Precision Shunt Regulator |
文件: | 总7页 (文件大小:620K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
SS432G
Adjustable Precision Shunt Regulator
FEATURES
DESCRIPTION
Low voltage operation (1.24V)
The SS432G is a low-voltage three-terminal adjustable shunt
Adjustable output voltage from VO = V REF to 12V
Wide operating current range from 55µ A to 100mA
Low dynamic output impedance 0.25Ω typ.
ESD rating is 6kV (per MIL-STD 883D)
regulator with guaranteed thermal stability over the applicable
temperature range. The output voltage can be set to any value
between VREF (approximately 1.24V) and 12V using two external
resistors (see application circuit). This device has a typical output
impedance of 0.25 ohms. Active output circuitry provides very sharp
turn-on characteristics, making this device an excellent alternative
to Zener diodes in many applications.
Pb-free, RoHS compliant.
APPLICATIONS
Linear Regulators
The SS432G is characterized for operation from 0°C to 105°C,
and four package options (SOT-23-3, SOT-23-5, SOT-89, TO-92)
allow the designer the opportunity to select the proper package
for the application.
Adjustable Supplies
Switching Power Supplies
Battery Operated Computers
Instrumentation
PIN CONFIGURATION
BLOCK DIAGRAM
SOT-23-3 (Top view) SOT-23-5
Cathode
2
1
Cathode
N/C
N/C
1
5
4
Anode
Ref
+
Anode
3
2
Reference
Cathode
3
Reference
-
SOT-89 (Top view)
Vref
3
2
1
Cathode
Anode
Anode
Cathode
Reference
SYMBOL
TO-92 (Top view)
Reference.
Cathode
Anode
3
2
1
Reference
Anode
ORDERING INFORMATION
SS432GxB TR
GN = SOT-23-3, RoHS compliant
GT = TO-92, RoHS compliant
GG = SOT-89, RoHS compliant
Package type:
GV = SOT-23-5, RoHS compliant
Example: SS432GNB TR
-> SS432G in RoHS-compliant SOT-23-3 shipped on tape and reel
6/22/2006 Rev.3.01
www.SiliconStandard.com
1 of 7
SS432/G
ABSOLUTE MAXIMUM RATINGS over ambient temp.range.
Parameter
Symbol
VKA
Maximum
Units
V
Cathode Voltage
12
Continuous Cathode Current
Reference Current
IKA
150
mA
IREF
3
mA
Operating Junction Temperature
Storage Temperature Range
Thermal Resistance
Tj
150
°C
TSTG
-45 to +150
160
°C
qJA
°C/W
Lead Temperature (Soldering - std.lead finish)
TLEAD
260°C/10 sec.
ELECTRICAL CHARACTERISTICS (T =25°C)
A
TEST
CIRCUIT
TEST CONDITIONS
PARAMETER
SYMBOL
ꢀꢁꢂꢃꢄ
MIN
TYP
MAX
1%
Vref
1
Reference voltage
VKA = Vref IKA = 10mA
1.228 1.240 1.252
V
Deviation of reference voltage
over full temperature range
VKA = Vref, IKA = 10mA
TA = full range
VI(dev)
1 ꢀ
2
4
12
mV
Ratio of change in reference
voltage to the change in
cathode voltage
DVref
IKA = 10mA, ∆VKA = Vref to 12V
IKA = 10mA, R1 = 10kΩ , R2 = ∞
-1.5
-2.7 mV/V
∆VKA
Reference current
Iref
2
0.15
0.05
0.5
µA
µA
IKA = 10mA, R1 = 10kW, R2 = ∞
TA = full range
Deviation of reference current
over full temperature range
0.30
II(dev)
2 ꢀ
Minimum cathode current
for regulation
Imin
Ioff
1
VKA = Vref
55
80
µA
Off-state cathode current
Dynamic impedance
3
1
VKA = 12V, Vref = 0
0.001
0.25
0.1
0.4
µA
IKA = 100µA to 100mA, VKA = Vref
‹
|ZKA
|
Ω
f ≤ 1kHz
6/22/2006 Rev.3.01
www.SiliconStandard.com
2 of 7
SS432G
TYPICAL PEFORMANCE CHARACTERISTICS
CATHODE CURRENT
Vs.
CATHODE CURRENT
Vs.
CATHODE VOLTAGE
CATHODE VOLTAGE
ꢁꢄꢂ
ꢆꢂꢂ
ꢅꢂꢂ
ꢄꢂꢂ
ꢁꢂꢂ
ꢃꢂꢂ
ꢂ
VKA = Vref
TA = 25°C
= Vref
V KA
ꢁꢅꢄ
ꢁꢂꢂ
ꢃꢄ
TA = 25°C
ꢄꢂ
ꢅꢄ
ꢂ
ꢀꢅꢄ
ꢀꢄꢂ
ꢀꢃꢄ
ꢀꢁꢂꢂ
ꢀꢃꢂꢂ
ꢀꢁꢂꢂ
ꢀꢃ
ꢂ
ꢃ
ꢁ
ꢀꢅ
ꢀꢁ
ꢂ
ꢁ
ꢅ
Cathode Voltage (V)
Cathode Voltage (V)
REFERENCE VOLTAGE
Vs.
REFERENCE INPUT CURRENT
Vs.
JUNCTION TEMPERATURE
JUNCTION TEMPERATURE
ꢁꢅꢈꢂ
ꢅꢀꢀꢀ
ꢄꢀꢀ
ꢃꢀꢀ
ꢂꢀꢀ
ꢁꢀꢀ
ꢀ
ꢉꢃꢇꢂꢇꢃꢄꢊ
ꢇ
ꢉꢋꢇꢂꢇ
ꢈ
ꢁꢅꢄꢂ
ꢁꢅꢇꢂ
ꢁꢅꢆꢂ
ꢁꢅꢅꢂ
ꢁꢅꢁꢂ
ꢁꢅꢂꢂ
ꢀ
ꢂꢃꢄꢅꢆ
ꢌꢆ
ꢀꢁꢂꢃꢄꢅꢆꢇ
ꢀꢁꢂꢈꢄµꢀꢇ
ꢆꢁꢀ
ꢀ
ꢁꢀ
ꢂꢀ
ꢃꢀ
ꢄꢀ
ꢅꢀꢀ
ꢅꢁꢀ
ꢀꢅꢂ
ꢂ
ꢅꢂ
ꢇꢂ
ꢈꢂ
ꢉꢂ ꢁꢂꢂ ꢁꢅꢂ
ꢀ !"ꢁ#ꢂ!ꢃꢄꢅ$%ꢅ&ꢆꢁ &ꢅꢃꢇꢃꢀꢈꢉꢀ
ꢀ !"ꢁ#ꢂ!ꢃꢄꢅ$%ꢅ&ꢆꢁ &ꢅꢃꢇꢃꢀꢈꢉꢀ
6/22/2006 Rev.3.01
www.SiliconStandard.com
3 of 7
SS432G
TEST CIRCUITS
ꢀ ꢀꢁ
ꢀꢁꢂꢃꢄ
ꢀ
ꢀꢁ
ꢀꢁꢂꢃꢄ
ꢄꢅꢆꢇꢈ
ꢀꢀꢁ
ꢀ ꢁꢂꢂ
ꢀꢀꢁ
ꢄꢀꢁ
ꢄꢅ
ꢄꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀꢁꢂꢃ
ꢄꢆ
ꢀꢀꢁꢇꢀꢁꢂꢃꢈꢉꢅꢊꢈꢄꢅꢋꢄꢆꢈꢌꢈꢊꢈꢍꢁꢂꢃꢈꢎꢈꢄꢅ
ꢀꢁꢂꢃꢄꢅꢆꢇꢈꢉꢆꢃꢄꢊꢋꢄ
ꢀꢁꢂꢍꢄꢌꢇꢁꢎꢄ
ꢀꢁꢂꢃꢄꢅꢆꢇꢈꢉꢆꢃꢄꢏꢋꢄ
ꢌꢀꢁꢂꢂꢐꢄꢌꢇꢁꢎꢄ
ꢀꢁꢂꢃꢄꢅꢆꢇꢈꢉꢆꢃꢄꢑꢋꢄ
ꢌ
ꢒꢎꢎꢄꢓꢃꢔꢃꢁꢄꢅꢉꢇꢇꢁꢕꢃꢄ
APPLICATION INFORMATION
Where:
T T =full temperature change.
VMAX
-
2
1
a VREF can be positive or negative depending on
whether the slope is positive or negative.
VDEV = VMAX-VMIN
VMIN
Example: VDEV= 12.0mV, VREF= 1240mV,
T T = 105°C, slope is negative.
-
2
1
12.0mV
ê1240mV
6
é
ù10
ú
û
ë
aVREF =
= - 92ppm/°C
105°C
T1
T2
TEMPERATURE
Note 4. The dynamic output impedance, R , is de-
fined as:
z
Deviation of reference input voltage, V DEV, is defined as
the maximum variation of the reference input voltage
over the full temperature range.
DVZ
RZ =
DIZ
When the device is programmed with two external re-
sistors, R1 and R2, (see Fig. 2), the dynamic output
impedance of the overall circuit, is defined as:
The average temperature coefficient of the reference in-
put voltage, a VREF is defined as:
é
ù
é
ù
VMAX - VMIN
VDEV
6
6
DV
DI
±
10
±
10
ú
R1
R2
ê
ú
ê
rz =
@ Rz
1+
VREF(at 25°C)
VREF(at 25°C)
ppm
ë
û
ë
û
DVREF
=
=
°C
T2 - T1
T2 - T1
6/22/2006 Rev.3.01
www.SiliconStandard.com
4 of 7
SS432G
APPLICATION EXAMPLES
VIN
R1
I
OUT
R
CL
V
IN
SS432
RS
SS432
R1
IOUT=VREF/ RCL
IOUT=VREF /RS
Current Limiter or Current Source
Constant-Current Sink
VIN
RIN
V
VOUT
FUSE
R3
IN
V
OUT
R3
R1
R1
SS432
SS432
R2
R2
VOUT @ (1+R1/R2) x VREF
VLIMIT @ (1+R1/R2) x VREF
Higher Current Shunt Regulator
Crow Bar
V
IN
R3
R1A
R2A
R1B
SS432
Output turns ON when
Low Limit <V < High Limit
IN
+
C1
SS432
V
R4
BE
R5
R2B
Low Limit@ VREF ( 1+ R1B/ R2B )+ VBE
High Limit @ VREF ( 1+ R1A/ R2A )
Over-Voltage/Under-Voltage Protection Circuit
6/22/2006 Rev.3.01
www.SiliconStandard.com
5 of 7
SS432G
PHYSICAL DIMENSIONS SOT-23-3
D
SYMBOL
MIN NOM MAX
D1
A
A1
D1
e
0.88
1.10 1.30
---- 0.10
0.00
0.30 0.40 0.51
1.70 2.00 2.30
2.80 2.90 3.04
2.10 2.50 2.90
1.20 1.40 1.60
E1
D
E
E
E1
e
A
Units : mm
Dimensions do not include mold protrusions.
A2
A3
A1
SOT-23-5
6/22/2006 Rev.3.01
www.SiliconStandard.com
6 of 7
SS432G
PHYSICAL DIMENSIONS SOT-89
ꢈꢁ
ꢀꢁꢂꢃꢄꢅꢆ
ꢂꢇꢈꢆ
ꢋꢌꢋꢍꢆ
ꢋꢌꢍꢏꢆ
ꢒꢌꢏꢍꢆ
ꢐꢌꢋꢍꢆ
ꢍꢌꢖꢒꢆ
ꢒꢌꢋꢘꢆ
ꢐꢌꢚꢎꢆ
ꢒꢌꢋꢍꢆ
ꢍꢌꢖꢏꢆ
ꢂꢉꢊꢆ
ꢋꢌꢎꢍꢆ
ꢋꢌꢐꢏꢆ
ꢒꢌꢓꢍꢆ
ꢐꢌꢎꢍꢆ
ꢍꢌꢋꢎꢆ
ꢒꢌꢏꢐꢆ
ꢖꢌꢍꢋꢆ
ꢒꢌꢎꢍꢆ
ꢍꢌꢋꢒꢆ
ꢂꢁ
ꢉꢆ
ꢃꢆ
ꢑꢆ
ꢔꢆ
ꢕꢆ
ꢗꢆ
ꢙꢆ
ꢛꢆ
ꢇꢆ
ꢃꢁ
ꢇꢁ
ꢆꢁ
ꢀꢁ
ꢄꢁ
ꢁ ꢁ ꢁ ꢅꢁ
Units: mm.
PHYSICAL DIMENSIONS TO-92
ꢂꢃ
ꢀ
Symbol
Min
Nom
ꢁꢂꢄꢅ
ꢆꢂꢁ
Max
ꢁꢂꢅꢅ
ꢆꢂꢁꢈ
ꢊ
ꢀ
ꢀꢆ
ꢉ
ꢁꢂꢃꢄ
ꢆꢂꢇꢇ
ꢊ
ꢂ
ꢋꢂꢁꢌ
ꢃꢂꢄꢇ
ꢃꢂꢇꢎ
ꢃꢂꢄꢈ
ꢆꢂꢇꢈ
ꢍꢆ
ꢍ
ꢏ
ꢃꢂꢇꢈ
ꢃꢂꢆꢃ
ꢃꢂꢁꢇ
ꢊ
ꢃꢂꢈꢌ
ꢃꢂꢃꢄ
ꢃꢂꢌꢁ
ꢊ
SEATING
PLANE
ꢂ
ꢐ
ꢁ
ꢑ
ꢆꢇꢂꢎꢌ
ꢆꢁꢂꢃꢎ ꢆꢃꢂꢋꢋ
ꢀ
ꢁ
ꢀ
Information furnished by Silicon Standard Corporation is believed to be accurate and reliable. However, Silicon Standard Corporation makes no
guarantee or warranty, express or implied, as to the reliability, accuracy, timeliness or completeness of such information and assumes no
responsibility for its use, or for infringement of any patent or other intellectual property rights of third parties that may result from its
use. Silicon Standard reserves the right to make changes as it deems necessary to any products described herein for any reason, including
without limitation enhancement in reliability, functionality or design. No license is granted, whether expressly or by implication, in relation to
the use of any products described herein or to the use of any information provided herein, under any patent or other intellectual property rights of
Silicon Standard Corporation or any third parties.
www.SiliconStandard.com
7 of 7
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