Datasheet > ST7805

ST7805

更新时间： 2024-01-01 05:33:34

品牌	Logo	应用领域
商升特 - SEMTECH		稳压器
页数	文件大小	规格书
3页	254K
描述
3-terminal 1 A positive voltage regulator

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ST7805 数据手册

ST 7805

3-terminal 1 A positive voltage regulator

Features

• Output Current up to 1 A

• Thermal Overload Protection

• Short Circuit Protection

• Output Transistor Safe Operating Area Protection

TO-220 Plastic Package

Absolute Maximum Ratings (T_a= 25 C)

Parameter

Input Voltage

Symbol

V_I

Value

Units

Thermal Resistance Junction-Cases

Thermal Resistance Junction-Air

Operating Temperature Range

Storage Temperature Range

R_θJC

R_θJA

T_OPR

T_S

C/W

0 to + 125

- 65 to + 150

Electrical Characteristics

(0 C < T_J< 125 C, I_O= 500 mA, V_I= 10 V, C_I= 0.33 µF, C_O= 0.1 µF, unless otherwise specified)

Parameter

Symbol

Conditions

Min. Typ. Max.

Unit

T_J= + 25 C

4.8

5.2

V_O

5 mA ≤ I_O≤1 A, P_O≤ 15 W

Output Voltage

4.75

5.25

V_I= 7 V to 20 V

V_I= 7 V to 25 V

100

Line Regulation ¹⁾

Regline T_J= + 25 C

V_I= 8 V to 12 V

I_O= 5 mA to 1.5 A

I_O= 250 mA to 750 mA

100

Load Regulation ¹⁾

Regload T_J= + 25 C

Quiescent Current

I_Q

T_J= + 25 C

I_O= 5 mA to 1 A

V_I= 7 V to 25 V

0.5

Quiescent Current Change

ΔI_Q

1.3

Output Voltage Drift

Output Noise Voltage

Ripple Rejection

Dropout Voltage

ΔV_O/ΔT I_O= 5 mA

-0.8

mV/ C

V_N

V_Drop

R_O

f = 10 Hz to 100 KHz, T_A= + 25 C

µV

f = 120 Hz, V_I= 8 V to 18 V

I_O= 1 A, T_J= + 25 C

Output Resistance

Short Circuit Current

Peak Current

f = 1 KHz

230

2.2

mΩ

I_SC

V_I= 35 V, T_A= + 25 C

I_PK

T_J= + 25 C

¹⁾Load and line regulation are specified at constant junction temperature, Changes in Vo due to heating effects must be

taken into account separately, Pulse testing with low duty is used.

SEMTECH ELECTRONICS LTD.

(Subsidiary of Sino-Tech International Holdings Limited, a company

listed on the Hong Kong Stock Exchange, Stock Code: 724)

Dated : 21/06/2006

12 3

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