Datasheet > PT78ST100

PT78ST100

更新时间： 2024-11-01 22:25:07

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
7页	173K
描述
1.5 AMP POSITIVE STEP-DOWN INTEGRATED SWITCHING REGULATOR

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PT78ST100 数据手册

PT78ST100 Series

1.5 Amp Positive Step-Down

Integrated Switching Regulator

SLTS059A

(Revised 6/30/2000)

•

Very Small Footprint

These ISRs have a maximum output current

of 1.5 Amps and an output voltage that is laser

trimmed to a variety of industry standard volt-

ages.

These 78 series regulators have excel-

lent line and load regulation with internal

short- circuit and over-temperature protec-

tion, and are offered in a variety of standard

output voltages. These ISRs are very flex-

ible and may be used in a wide variety of

applications.

High Efficiency > 85%

Self-Contained Inductor

Internal Short-Circuit Protection

Over-Temperature Protection

Fast Transient Response

Wide Input Range

The PT78ST100 is a series of wide-

input range, 3-terminal regulators.

Pin-Out Information

Ordering Information

PT78ST1

XX Y

Pin Function

V_in

Output Voltage

Package Suffix

GND

V_out

Standard Application

33 = 3.3 Volts

36 = 3.6 Volts

05 = 5.0 Volts

51 = 5.1 Volts

53 = 5.25 Volts

06 = 6.0 Volts

65 = 6.5 Volts

07 = 7.0 Volts

08 = 8.0 Volts

09 = 9.0 Volts

10 = 10.0 Volts

12 = 12.0 Volts

14 = 13.9 Volts

15 = 15.0 Volts

V = Vertical Mount

S = Surface Mount

H = Horizontal

Mount

Vin

Vout

PT78ST100

COM

C1 = Optional 1µF ceramic

C2 = Required 100µF electrolytic

Pkg Style 500

Specifications

PT78ST100 SERIES

Characteristics

(T_a= 25°C unless noted)

Symbols

I_o

Conditions

Min

0.1*

—

Typ

—

Max

Units

Output Current

Over V_inrange

V_in= V_inmin

0.1 ≤ I_o≤ 1.5A

1.5

—

Short Circuit Current

Input Voltage Range

I_sc

3.5

Apk

V_in

V_o= 3.3V

V_o= 5V

—

V_o= 12V

Output Voltage Tolerance

∆V_o

Over V_inrange, I_o=1.5A

T_a= 0°C to +60°C

—

1.0

2.0

Line Regulation

Load Regulation

V_oRipple/Noise

Reg_line

Reg_load

V_n

Over V_inrange

—

0.2

0.1

0.4

0.2

0.1 ≤ I_o≤ 1.5A

V_in= 9V, I_o= 1.5A

V_in= 16V, I_o= 1.5A

V_o= 5V

V_o= 12V

—

mV_pp

Transient Response

(with 100µF output cap)

t_tr

50% load change

V_oover/undershoot

—

100

—

µSec

Efficiency

V_in= 10V, I_o= 1A

V_in= 17V, I_o= 1A

V_o= 3.3V

V_o= 5V

—

V_o= 12V

Switching Frequency

ƒ_o

Over V_inrange, I_o=1.5A

—

600

650

700

kHz

Absolute Maximum

Operating Temperature Range

T_a

-40

—

+85

°C

Recommended Operating

Temperature Range

T_a

Free Air Convection, (40-60LFM)

At V_in= 24V, I_o=1.0A

-40

—

+80**

°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

—

6.5

—

grams

*ISR will operate down to no load with reduced specifications.

**See Thermal Derating chart.

Note: The PT78ST100 Series requires a 100µF electrolytic or tantalum output capacitor for proper operation in all applications.

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

12 3 4 5 6 7

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PT78ST100 替代型号

型号	品牌	替代类型	描述	数据表
78SR100	TI	功能相似	1.5 AMP POSITIVE STEP-DOWN INTEGRATED SWITCHING REGULATOR
78ST100	TI	功能相似	1.5 AMP POSITIVE STEP-DOWN INTEGRATED SWITCHING REGULATOR

与PT78ST100相关器件

型号	品牌	获取价格	描述	数据表
PT78ST100_07	TI	获取价格	1.5 Amp Positive Step-Down Integrated Switching Regulator
PT78ST100_14	TI	获取价格	Very Small Footprint
PT78ST105	TI	获取价格	1.5 AMP POSITIVE STEP-DOWN INTEGRATED SWITCHING REGULATOR
PT78ST105H	TI	获取价格	1.5 AMP POSITIVE STEP-DOWN INTEGRATED SWITCHING REGULATOR
PT78ST105S	TI	获取价格	1.5 AMP POSITIVE STEP-DOWN INTEGRATED SWITCHING REGULATOR
PT78ST105ST	TI	获取价格	1.5 AMP POSITIVE STEP-DOWN INTEGRATED SWITCHING REGULATOR
PT78ST105T	TI	获取价格	1.5 AMP POSITIVE STEP-DOWN INTEGRATED SWITCHING REGULATOR
PT78ST105U	TI	获取价格	1.5 AMP POSITIVE STEP-DOWN INTEGRATED SWITCHING REGULATOR
PT78ST105V	TI	获取价格	1.5 AMP POSITIVE STEP-DOWN INTEGRATED SWITCHING REGULATOR
PT78ST106	ETC	获取价格	6Vout 1.5Amp Wide-Input Positive Step-Down ISR

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