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PT78HT205

更新时间： 2024-11-19 12:21:43

品牌	Logo	应用领域
德州仪器 - TI		稳压器开关放大器
页数	文件大小	规格书
3页	483K
描述
2 Amp Positive Step-Down Integrated Switching Regulator

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中文翻译

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数据手册

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PT78HT205 数据手册

PT78HT200 Series

2 Amp Positive Step-Down

Integrated Switching Regulator

SLTS057B

(Revised 10/15/2000)

• High Efficiency: Up to 90%

• Wide Input Range

• Self-Contained Inductor

• Short-Circuit Protection

• Over-Temperature Protection

• Fast Transient Response

current of 2A. The output voltage is

also laser trimmed for high accuracy.

Features include excellent line and

load regulation, internal short-circuit

and over-temperature protection.

The PT78HT200 series is available

in three package outlines, including

horizontal SMD. Their small size and

output voltage selection makes these

regulators ideal for use in a variety

of applications.

The PT78HT200 is a series of fixed

output, wide-input range, 3-terminal

Integrated Switching Regulators (ISRs).

These ISRs have a maximum output

Pin-Out Information

Ordering Information

PT 78H T 2

Pin Function

Standard Application

GND

V_out

Output Voltage

Package Suffix

V = Vertical Mount

S = Surface Mount

H = Horizontal

Mount

33 = 3.3 Volts

05 = 5.0 Volts

53 = 5.25 Volts

65 = 6.5 Volts

08 = 8.0 Volts

Vin

Vout

PT78HT200

COM

C1 = Optional 1µF ceramic

C2 = Required 100µF electrolytic ⁽¹⁾

Pkg Style 500

Specifications

PT78HT200 SERIES

Typ

Characteristics

(T = 25°C unless noted)

Symbols

I_o

Conditions

Min

0.1

—

Max

Units

(2)

Output Current

Over V_inrange

V_in= V_inmin

0.1 ≥ I_o≥ 2.0A

—

2.0

—

Short Circuit Current

Input Voltage Range

I_sc

6.0

Apk

V_in

V_o=3.3V

V_o=5.0V

V_o=6.5V

V_o=8.0V

—

10.5

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

Vo Ripple/Noise

Reg_line

Reg_load

V_n

Over V_inrange

—

0.ꢀ

0.2

0.8

0.ꢀ

%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

Vo over/undershoot

100

5.0

—

µSec

%Vo

Efficiency

V_in=9V, I_o= 2.0A

V_o=3.3V

V_o=5.0V

V_o=8.0V

—

_in=12V, I_o=2.0A

V_in=15V, I_o=2.0A

Switching Frequency

ƒ_o

Over V_inand I_oranges

_o≥5.0V

_o=3.3V

700

950

750

800

kHz

°C

1,000

1,050

Absolute Maximum

T_a

Over V_inrange

-ꢀ0

—

+85 ⁽³⁾

Operating Temperature Range

Thermal Resistance

Storage Temperature

Mechanical Shock

θ_ja

T_s

—

Free Air Convection, (ꢀ0-60LFM)

—

-ꢀ0

—

ꢀ0

—

500

—

°C/W

°C

+125

—

Per Mil-STD-883D, Method 2002.3

G’s

Mechanical Vibration

Per Mil-STD-883D, Method 2007.2,

20-2000 Hz, soldered in a PC board

—

G’s

Weight

—

6.5

—

Grams

Notes: (1) The PT78HT200 Series requires a 100µF electrolytic or tantalum output capacitor for proper operation in all applications.

(2) ISR will operate down to no load with reduced specifications.

(3) See Safe Operating Area curves for derating

For technical support and more information, see inside back cover or visit www.ti.com/powertrends

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与PT78HT205相关器件

型号	品牌	获取价格	描述	数据表
PT78HT205H	TI	获取价格	2 AMP POSITIVE STEP-DOWN INTEGRATED SWITCHING REGULATOR
PT78HT205S	TI	获取价格	2 AMP POSITIVE STEP-DOWN INTEGRATED SWITCHING REGULATOR
PT78HT205T	TI	获取价格	IC 2 A SWITCHING REGULATOR, 800 kHz SWITCHING FREQ-MAX, Switching Regulator or Controller
PT78HT205V	TI	获取价格	2 AMP POSITIVE STEP-DOWN INTEGRATED SWITCHING REGULATOR
PT78HT208	ETC	获取价格	8Vout 2Amp Wide-Input Positive Step-Down ISR
PT78HT208H	ETC	获取价格	Analog IC
PT78HT208S	ETC	获取价格	Analog IC
PT78HT208V	ETC	获取价格	Analog IC
PT78HT233	ETC	获取价格	3.3Vout 2Amp Wide-Input Positive Step-Down ISR
PT78HT233H	TI	获取价格	2 AMP POSITIVE STEP-DOWN INTEGRATED SWITCHING REGULATOR

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