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參數資料
| 型號： | MC34268D |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 通用總線功能 |
| 英文描述： | Single Output LDO, 250mA, Fixed(3.0V), Low Noise, Fast Transient Response 6-SOT-223 -40 to 85 |
| 中文描述： | BUS TERMINATOR SUPPORT CIRCUIT, PDSO8 |
| 封裝： | SOIC-8 |
| 文件頁數： | 2/8頁 |
| 文件大小： | 115K |
| 代理商： | MC34268D |
MC34268
http://onsemi.com
2
MAXIMUM RATINGS
Rating
Symbol
Value
Unit
Power Supply Input Voltage
Vin
15
V
Power Dissipation and Thermal Characteristics
DT Suffix, Plastic Package, Case 369A
TA = 25
°
C, Derate Above TA = 25
°
C
Thermal Resistance, Junction–to–Case
Thermal Resistance, Junction–to–Air
D Suffix, Plastic Package, Case 751
TA = 25
°
C, Derate Above TA = 25
°
C
Thermal Resistance, Junction–to–Case
Thermal Resistance, Junction–to–Air
ST Suffix, Plastic Package, Case 318E
TA = 25
°
C, Derate Above TA = 25
°
C
Thermal Resistance, Junction–to–Case
Thermal Resistance, Junction–to–Air
PD
R
θ
JC
R
θ
JA
PD
R
θ
JC
R
θ
JA
PD
R
θ
JC
R
θ
JA
TJ
Tstg
Internally Limted
5.0
87
Internally Limited
22
140
Internally Limited
15
245
W
°
C/W
°
C/W
W
°
C/W
°
C/W
W
°
C/W
°
C/W
Operating Junction Temperature Range
0 to +150
°
C
Storage Temperature
– 55 to +150
°
C
ELECTRICAL CHARACTERISTICS
(Vin = 4.25 V, CO = 10
μ
F, for typical values TJ = 25
°
C, for min/max values TJ = 0
°
C to +125
°
C, unless otherwise noted.)
Characteristic
Symbol
Min
Typ
Max
Unit
Output Voltage (TJ = 25
°
C, IO = 0 mA)
Output Voltage, over Line, Load, and Temperature (Vin = 3.9 V to 15 V,
IO = 0 mA to 490 mA)
Line Regulation (Vin = 4.25 V to 15 V, IO = 0 mA, TJ = 25
°
C)
Load Regulation (IO = 0 mA to 800 mA, TJ = 25
°
C)
Dropout Voltage (IO = 490 mA)
Ripple Rejection (f = 120 Hz)
VO
2.81
2.76
2.85
2.85
2.89
2.93
V
Regline
Regload
Vin– VO
RR
—
—
0.3
%
—
—
0.5
%
—
0.95
1.1
V
55
—
—
dB
Maximum Output Current (Vin = 5.0 V)
Bias Current (Vin = 4.25 V, IO = 0 mA)
Minimum Load Current to maintain Regulation (Vin = 15 V)
I(max)
IB
IL(min)
800
—
—
mA
—
5.0 to 3.0
8.0
mA
—
—
0
mA
IO, OUTPUT LOAD CURRENT (mA)
i
V
O
–
Figure 1. Dropout Voltage versus
Output Load Current
1.5
1.3
1.1
0.9
0.7
0.50
200
400
600
800
1000
Figure 2. Transient Load Regulation
,
TJ = 25
°
C
20 ms/DIV
Vin = 5.0 V
CO = 10
μ
F
TA = 25
°
C
,
I
V
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| MC34268DG | 功能描述:低壓差穩壓器 - LDO 2.85V 800mA SCSI-3 Active Terminator RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調節:0.3 % 輸出端數量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| MC34268DR2 | 功能描述:低壓差穩壓器 - LDO 2.85V 800mA SCSI-4 RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調節:0.3 % 輸出端數量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| MC34268DR2G | 功能描述:低壓差穩壓器 - LDO 2.85V 800mA SCSI-5 Active Terminator RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調節:0.3 % 輸出端數量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| MC34268DT | 功能描述:低壓差穩壓器 - LDO 2.85V 800mA SCSI-6 RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調節:0.3 % 輸出端數量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| MC34268DTG | 功能描述:低壓差穩壓器 - LDO 2.85V 800mA SCSI-7 Active Terminator RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調節:0.3 % 輸出端數量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
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