Datasheet > ST7812R

ST7812R

更新时间： 2024-02-19 06:41:22

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	252K
描述
3-terminal 1 A positive voltage regulator

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ST7812R 数据手册

ST 7812R

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

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 ^OC < T_J< 125^OC, I_O= 500 mA, V_I= 19 V, C_I= 0.33 µF, C_O= 0.1 µF, unless otherwise specified)

Min. Typ. Max.

Parameter

Symbol

Conditions

Unit

T_J= + 25 C

11.5

12.5

Output Voltage

V_O

5 mA ≤ I_O≤ 1 A, P_O≤ 15 W

11.4

12.6

V_I= 14.5 V to 27 V

V_I= 14.5 V to 30 V

240

Line Regulation ¹⁾

Regline T_J= + 25 C

V_I= 16 V to 22 V

120

I_O= 5 mA to 1.5 A

I_O= 250 mA to 750 mA

240

Load Regulation ¹⁾

Regload T_J= + 25 C

120

Quiescent Current

I_Q

T_J= + 25 C

I_O= 5 mA to 1 A

0.5

Quiescent Current Change

ΔI_Q

V_I= 14.5 V to 30 V

Output Voltage Drift

Output Noise Voltage

Ripple Rejection

Dropout Voltage

ΔV_O/ΔT I_O= 5 mA

-1

mV/ C

V_N

V_Drop

R_O

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

µV

f = 120 Hz, V_I= 15 V to 25 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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