ST7812 [SEMTECH]
3-terminal 1 A positive voltage regulator; 3 - 1号航站楼正电压稳压器
| 型号： | ST7812 |
| 厂家： | 
SEMTECH CORPORATION |
| 描述： | 3-terminal 1 A positive voltage regulator |
| 文件： | 总3页 (文件大小：254K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
ST 7812
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
O
Absolute Maximum Ratings (Ta = 25 C)
Parameter
Input Voltage
Symbol
VI
Value
Units
35
5
V
O
O
Thermal Resistance Junction-Cases
Thermal Resistance Junction-Air
Operating Temperature Range
Storage Temperature Range
RθJC
RθJA
TOPR
TS
C/W
C/W
65
O
C
0 to + 125
- 65 to + 150
O
C
Electrical Characteristics
O
O
(0 C < TJ < 125 C, IO = 500 mA, VI = 19 V, CI = 0.33 µF, CO = 0.1 µF, unless otherwise specified)
Min. Typ. Max.
Parameter
Symbol
Conditions
Unit
O
TJ = + 25 C
11.5
12
12.5
Output Voltage
VO
V
5 mA ≤ IO ≤ 1 A, PO ≤ 15 W
11.4
12
12.6
VI = 14.5 V to 27 V
VI = 14.5 V to 30 V
-
-
-
-
240
Line Regulation 1)
Regline TJ = + 25 C
mV
O
VI = 16 V to 22 V
120
IO = 5 mA to 1.5 A
IO = 250 mA to 750 mA
-
-
240
Load Regulation 1)
Regload TJ = + 25 C
mV
mA
mA
O
-
-
120
O
Quiescent Current
IQ
TJ = + 25 C
-
-
8
IO = 5 mA to 1 A
-
-
0.5
Quiescent Current Change
ΔIQ
VI = 14.5 V to 30 V
-
-
1
-
-
-
-
-
-
-
O
Output Voltage Drift
Output Noise Voltage
Ripple Rejection
Dropout Voltage
ΔVO/ΔT IO = 5 mA
-
-1
76
-
mV/ C
O
VN
RR
VDrop
RO
f = 10 Hz to 100 KHz, TA = + 25 C
-
µV
dB
V
f = 120 Hz, VI = 15 V to 25 V
55
-
O
IO = 1 A, TJ = + 25 C
2
Output Resistance
Short Circuit Current
Peak Current
f = 1 KHz
-
18
230
2.2
mΩ
mA
A
O
ISC
VI = 35 V, TA = + 25 C
-
O
IPK
TJ = + 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
ST 7812
Typical Performance Characteristics
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
ST 7812
TO-220 PACKAGE OUTLINE
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
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