Datasheet > SG29055_1

SG29055_1

更新时间： 2024-11-13 06:11:23

品牌	Logo	应用领域
美高森美 - MICROSEMI		/
页数	文件大小	规格书
4页	248K
描述
LOW DROPOUT DUAL REGULATOR

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中文翻译

获取价格

数据手册

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SG29055_1 数据手册

SG29085/85A

LOW DROPOUT DUAL REGULATOR

DESCRIPTION

FEATURES

• 2% Internally Trimmed Output

• Two regulated outputs

• Output current in excess of

1000mA

• Low quiescent current standby

regulator

The SG29085/85A is a dual 8.2V/5V positive voltage regulator. One output is a high

current (up to 1000 mA) regulator that can be turned on or off by a high impedance low

current TTL compatible switch. The second or standby output remains on regardless.

The on/off switch not only shuts off the high current output but actually puts the IC in a

micropower mode making possible a low quiescent current. This unique characteristic

coupled with an extremely low dropout, (.55V for output current of 10mA) makes the

SG29085/85A well suited for power systems that require standby memory. The

SG29085/85A includes other features which were originally designed for automotive

applications. These include protection from reverse battery installations and double

battery jumps. The high current regulator has overvoltage shutdown to protect both the

internal circuitry and the load during line transients, such as load dump (60V). In addition,

the high current regulator design also has built-in protection for short circuit and thermal

overload. During these fault conditions of the primary regulator the standby regulator will

continue to power its load.

• Input-output differential less than

0.6V at 0.5A

• Reverse battery protection

• 60V load dump protection

• -50V reverse transient protection

• Short circuit protection

• Internal thermal overload protec-

tion

• Available in plastic TO-220

• ON/OFF switch for high current

output

The SG29085 is the 8.2 volt, ±5% version of a family of dual regulators with a standby

output voltage of 5V. Other high current outputs of 5 and 12 volts are available. Also

available is the SG28085A which offers an improved output voltage tolerance of ±2%.

They are available in the plastic TO-220 power package and are designed to function

over the automotive ambient temperature range of -40°C to 85°C.

* Required if regulator is located far from power

supply filter.

TYPICAL APPLICATION CIRCUIT

INPUT VOLTAGE

** Required for stability. May be increased without

bound. Capacitor must be rated to operate at the

minimum temperature expected for the regulator

system.

C1*

0.1µF

SG29085/85A

OUTPUT VOLTAGE

(8.2V, 1000mA)

C2**

10µF

OVERVOLTAGE

THERMAL

SHUTDOWN

ON/OFF SWITCH

(for output voltage only)

REGULATOR

BIAS

1.23V

REFERENCE

STANDBY OUTPUT

5V STANDBY

REGULATOR

(5V, 50mA)

5.6V

C3**

10µF

GROUND

12/90 Rev 1.1 2/94

LINFINITY Microelectronics Inc.

11861 Western Avenue ∞ Garden Grove, CA 92841

(714) 898-8121 ∞ FAX: (714) 893-2570

12 3 4

中文翻译

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与SG29055_1相关器件

型号	品牌	获取价格	描述	数据表
SG29055A	MICROSEMI	获取价格	LOW DROPOUT DUAL REGULATOR
SG29055AP	MICROSEMI	获取价格	LOW DROPOUT DUAL REGULATOR
SG29055P	MICROSEMI	获取价格	LOW DROPOUT DUAL REGULATOR
SG29085	MICROSEMI	获取价格	LOW DROPOUT DUAL REGULATOR
SG29085_1	MICROSEMI	获取价格	LOW DROPOUT DUAL REGULATOR
SG29085A	MICROSEMI	获取价格	LOW DROPOUT DUAL REGULATOR
SG29085AP	MICROSEMI	获取价格	LOW DROPOUT DUAL REGULATOR
SG29085P	MICROSEMI	获取价格	LOW DROPOUT DUAL REGULATOR
SG29125	MICROSEMI	获取价格	LOW DROPOUT DUAL REGULATOR
SG29125_1	MICROSEMI	获取价格	LOW DROPOUT DUAL REGULATOR

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