78ST205

更新时间： 2024-11-25 23:24:47

品牌	Logo	应用领域
德州仪器 - TI		/
页数	文件大小	规格书
3页	201K
描述
5Vout 2A Wide Input Positive Step-Down ISR

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78ST205 数据手册

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

7 8 S T 2 0 0 S e r i e s

2 AMP POSITIVE STEP-DOWN

INTEGRATED SWITCHING REGULATOR

Revised 6/30/98

The 78ST200 is a series of wide

• High Efficiency > 82%

input voltage, 3 terminal Integrated

Switching Regulators (ISRs). Employ-

ing a ceramic substrate, these ISRs

have a maximum output current of 2A.

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 78ST200 series regulators

have internal short-circuit and over-

temperature protection and may be

used in a wide variety of applications.

Pin-Out Information

Ordering Information

78ST2

Pin No. Function

Standard Application

GND

V_out

Output Voltage

Package Suffix

V = Vertical Mount

S = Surface Mount

H = Horizontal

Mount

33 = 3.3 Volts

35 = 3.45 Volts

05 = 5.0 Volts

Vin

Vout

GND

78ST200

GND

(For dimensions and PC board

layout see Package Style 500.)

C1 = Optional 1µF ceramic

C2 = Required 100µF electrolytic

Specifications

78ST200 SERIES

Characteristics

(T_a= 25°C unless noted)

Symbols

I_o

Conditions

Min

Typ

Max

Units

Output Current

Over V_inrange

I_o= 0.1 to 3.0A

0.1*

—

2.0

Input Voltage Range

V_in

V_o< 3.5V

V_o= 5.0V

—

Output Voltage Tolerance

∆V_o

Over V_inrange, I_o= 2.0A

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≤ 2.0A

V_in= V_inmin, I_o= 2.0A

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= 2.0A, V_o= 5V

Over V_inand I_oranges

—

Switching Frequency

ƒ_o

0.95

1.0

1.05

MHz

Absolute Maximum

Operating Temperature Range

T_a

—

-40

—

+85

°C

Recommended Operating

Temperature Range

T_a

Free Air Convection, (40-60LFM)

Over V_inand I_oranges

-40

—

+85**

°C

Thermal Resistance

Storage Temperature

Mechanical Shock

θ_ja

T_s

—

Free Air Convection, (40-60LFM)

—

°C/W

°C

-40

—

+125

—

Per Mil-STD-883D, Method 2002.3

500

G’s

Mechanical Vibration

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 78ST200 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78ST205相关器件

型号	品牌	获取价格	描述	数据表
78ST205HC	TI	获取价格	2 AMP POSITIVE STEP-DOWN INTEGRATED SWITCHING REGULATOR
78ST205SC	TI	获取价格	2 AMP POSITIVE STEP-DOWN INTEGRATED SWITCHING REGULATOR
78ST205SCT	TI	获取价格	2 AMP POSITIVE STEP-DOWN INTEGRATED SWITCHING REGULATOR
78ST205VC	TI	获取价格	2 AMP POSITIVE STEP-DOWN INTEGRATED SWITCHING REGULATOR
78ST212	TI	获取价格	12V 2 AMP POSITIVE STEP-DOWN INTEGRATED SWITCHING REGULATOR
78ST212HC	TI	获取价格	12V 2 AMP POSITIVE STEP-DOWN INTEGRATED SWITCHING REGULATOR
78ST212SERIES	TI	获取价格	12V 2 AMP POSITIVE STEP-DOWN INTEGRATED SWITCHING REGULATOR
78ST212VC	TI	获取价格	12V 2 AMP POSITIVE STEP-DOWN INTEGRATED SWITCHING REGULATOR
78ST233	TI	获取价格	2 AMP POSITIVE STEP-DOWN INTEGRATED SWITCHING REGULATOR
78ST233HC	TI	获取价格	2 AMP POSITIVE STEP-DOWN INTEGRATED SWITCHING REGULATOR

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