SS432GGBTR [SSC]

Adjustable Precision Shunt Regulator; 可调式精密并联稳压器


型号：	SS432GGBTR
厂家：	SILICON STANDARD CORP.
描述：	Adjustable Precision Shunt Regulator 可调式精密并联稳压器稳压器
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 V^REF(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

N/C

Anode

Ref

Anode

Reference

Cathode

Reference

SOT-89 (Top view)

Vref

Cathode

Anode

Cathode

Reference

SYMBOL

TO-92 (Top view)

Reference.

Cathode

Anode

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

V_KA

Maximum

Units

Cathode Voltage

Continuous Cathode Current

Reference Current

I_KA

150

I_REF

Operating Junction Temperature

Storage Temperature Range

Thermal Resistance

T_j

150

°C

T_STG

-45 to +150

160

°C

q_JA

°C/W

Lead Temperature (Soldering - std.lead finish)

T_LEAD

260°C/10 sec.

ELECTRICAL CHARACTERISTICS (T =25°C)

TEST

CIRCUIT

TEST CONDITIONS

PARAMETER

SYMBOL

ꢀꢁꢂꢃꢄ

MIN

TYP

MAX

V_ref

Reference voltage

V_KA= V_refI_KA= 10mA

1.228 1.240 1.252

Deviation of reference voltage

over full temperature range

V_KA= V_ref, I_KA= 10mA

T_A= full range

V_I(dev)

1 ꢀ

Ratio of change in reference

voltage to the change in

cathode voltage

DVref

I_KA= 10mA, ∆V_KA= V_refto 12V

I_KA= 10mA, R1 = 10kΩ , R2 = ∞

-1.5

-2.7 mV/V

∆VKA

Reference current

Iref

0.15

0.05

0.5

µA

IKA = 10mA, R1 = 10kW, R2 = ∞

TA = full range

Deviation of reference current

over full temperature range

0.30

I_I(dev)

2 ꢀ

Minimum cathode current

for regulation

Imin

I_off

V_KA= V_ref

µA

Off-state cathode current

Dynamic impedance

V_KA= 12V, V_ref= 0

0.001

0.25

0.1

0.4

µA

I_KA= 100µA to 100mA, V_KA= V_ref

‹

|Z_KA

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

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ꢂ

VKA = Vref

TA = 25°C

= Vref

V _KA

ꢁꢅꢄ

ꢁꢂꢂ

ꢃꢄ

T_A= 25°C

ꢄꢂ

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Cathode Voltage (V)

REFERENCE VOLTAGE

Vs.

REFERENCE INPUT CURRENT

Vs.

JUNCTION TEMPERATURE

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6/22/2006 Rev.3.01

www.SiliconStandard.com

3 of 7

SS432G

TEST CIRCUITS

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ꢀ _ꢁꢂꢂ

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ꢀꢁꢂꢃꢄꢅꢆꢇꢈꢉꢆꢃꢄꢊꢋꢄ

_ꢀꢁꢂꢍꢄꢌꢇꢁꢎꢄ

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APPLICATION INFORMATION

Where:

T T =full temperature change.

V_MAX

a V_REFcan be positive or negative depending on

whether the slope is positive or negative.

V_DEV= V_MAX-V_MIN

V_MIN

Example: V_DEV= 12.0mV, V_REF= 1240mV,

T T = 105°C, slope is negative.

12.0mV

ê_1240mV

ù₁₀

aVREF =

= - 92ppm/°C

105°C

T₁

T₂

TEMPERATURE

Note 4. The dynamic output impedance, R , is de-

fined as:

Deviation of reference input voltage, V _DEV, is defined as

the maximum variation of the reference input voltage

over the full temperature range.

DV^Z

R_Z=

DI^Z

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 V_REFis defined as:

VMAX - VMIN

VDEV

rz =

@ Rz

[

]

VREF(at 25°C)

ppm

DVREF

°C

T2 - T1

6/22/2006 Rev.3.01

www.SiliconStandard.com

4 of 7

SS432G

APPLICATION EXAMPLES

V_IN

OUT

SS432

R_S

SS432

I_OUT=V_REF/ R_CL

I_OUT=V_REF/R_S

Current Limiter or Current Source

Constant-Current Sink

V_IN

R_IN

V_OUT

FUSE

OUT

SS432

V_OUT@ (1+R1/R2) x V_REF

V_LIMIT@ (1+R1/R2) x V_REF

Higher Current Shunt Regulator

Crow Bar

R1A

R2A

R1B

SS432

Output turns ON when

Low Limit <V < High Limit

SS432

R2B

Low Limit@ V_REF( 1+ R1B/ R2B )+ V_BE

High Limit @ V_REF( 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

SYMBOL

MIN NOM MAX

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

Units : mm

Dimensions do not include mold protrusions.

SOT-23-5

6/22/2006 Rev.3.01

www.SiliconStandard.com

6 of 7

SS432G

PHYSICAL DIMENSIONS SOT-89

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Units: mm.

PHYSICAL DIMENSIONS TO-92

ꢂꢃ

ꢀ

Symbol

Min

Nom

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Max

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ꢊ

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ꢊ

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SEATING

PLANE

ꢂ

ꢐ

ꢁ

ꢑ

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ꢆꢁꢂꢃꢎ ꢆꢃꢂꢋꢋ

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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

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