Datasheet > 78ST300

78ST300

更新时间： 2024-11-25 22:46:07

品牌	Logo	应用领域
德州仪器 - TI		稳压器开关
页数	文件大小	规格书
3页	192K
描述
3 AMP POSITIVE STEP-DOWN INTEGRATED SWITCHING REGULATOR

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中文翻译

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78ST300 数据手册

For assistance or to order, call (800) 531-5782

7 8 S T 3 0 0 S e r i e s

3 AMP POSITIVE STEP-DOWN

INTEGRATED SWITCHING REGULATOR

Revised 6/30/98

The 78ST300 is a series of wide

• High Efficiency > 80%

input voltage, 3 terminal Integrated

Switching Regulators (ISRs). Employ-

ing a ceramic substrate, these ISRs

have a maximum output current of 3A.

The output voltage is laser trimmed

for high accuracy.

• Wide Input Range

• Self-Contained Inductor

• Short-Circuit Protection

• Over-Temperature Protection

• Fast Transient Response

The 78ST300 series regulators

have internal short-circuit and over-

temperature protection and may be

used in a wide variety of applications.

Ordering Information

Pin-Out Information

78ST3

Pin No. Function

Standard Application

GND

V_out

Output Voltage

Package Suffix

Vin

Vout

GND

V = Vertical Mount

H = Horizontal

Mount

05 = 5.0 Volts

78ST300

GND

(For dimensions and PC board

layout see Package Style 600.)

C1 = Optional 1µF ceramic

C2 = Required 100µF electrolytic

Specifications

78ST300 SERIES

Characteristics

(T_a= 25°C unless noted)

Symbols

Conditions

Min

0.1*

Typ

—

Max

3.0

Units

Output Current

I_o

Over V_inrange

Input Voltage Range

Output Voltage Tolerance

V_in

∆V_o

I_o= 0.1 to 3.0A

Over V_inrange

T_a= 0°C to +60°C

—

±1.0

±2.0

%Vo

Line Regulation

Load Regulation

Ripple/Noise

Reg_line

Regload

V_n

Over V_inrange

—

±0.4

±0.2

±0.8

±0.4

—

%V_o

%Vo

0.1 ≤ I_o≤ 3.0A

V_in= V_inmin, I_o= 3.0A

Transient Response

(with 100µF output cap)

t_tr

50% load change

V_oover/undershoot

100

5.0

—

µSec

%V_o

Efficiency

V_in= 9V, I_o= 3.0A

—

Switching Frequency

ƒ_o

Over V_inand I_oranges

0.95

1.0

1.05

MHz

Absolute Maximum

Operating Temperature Range

T_a

—

-40

—

+70

°C

Recommended Operating

Temperature Range

T_a

Free Air Convection, (40-60LFM)

Over V_inand I_oranges

-40

—

+70**

°C

Thermal Resistance

Storage Temperature

Mechanical Shock

Mechanical Vibration

θ_ja

T_s

—

Free Air Convection, (40-60LFM)

—

°C/W

°C

-40

—

+125

—

Per Mil-STD-883D, Method 2002.3

500

G’s

Per Mil-STD-883D, Method 2007.2,

20-2000 Hz, soldered in a PC board

—

G’s

Weight

—

Grams

ISR will operate down to no load with reduced specifications.

** See Thermal Derating chart.

Note: The 78ST300 Series requires a 100µF electrolytic or tantalum output capacitor for proper operation in all applications.

Power Trends, Inc. 27715 Diehl Road, Warrenville, IL 60555 (800) 531-5782 Fax: (630) 393-6902 http://www.powertrends.com

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与78ST300相关器件

型号	品牌	获取价格	描述	数据表
78ST300_07	TI	获取价格	3 AMP POSITIVE STEP-DOWN INTEGRATED SWITCHING REGULATOR
78ST300SERIES	TI	获取价格	3 AMP POSITIVE STEP-DOWN INTEGRATED SWITCHING REGULATOR
78ST305	TI	获取价格	5Vout 3Amp Wide Input Positive Step-Down ISR
78ST305HC	TI	获取价格	3 AMP POSITIVE STEP-DOWN INTEGRATED SWITCHING REGULATOR
78ST305SC	TI	获取价格	3 AMP POSITIVE STEP-DOWN INTEGRATED SWITCHING REGULATOR
78ST305SCT	TI	获取价格	3 AMP POSITIVE STEP-DOWN INTEGRATED SWITCHING REGULATOR
78ST305VC	TI	获取价格	3 AMP POSITIVE STEP-DOWN INTEGRATED SWITCHING REGULATOR
78T05AA	UTC	获取价格	3-TERMINAL 1.5A POSITIVE VOLTAGE REGULATOR
78T05AAG-TQ2-R	UTC	获取价格	3-TERMINAL 1.5A POSITIVE VOLTAGE REGULATOR
78T05AAG-TQ2-T	UTC	获取价格	3-TERMINAL 1.5A POSITIVE VOLTAGE REGULATOR

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