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參數(shù)資料
| 型號： | US1261CM |
| 廠商： | Unisem Group |
| 英文描述： | DUAL 6A AND 1A LOW DROPOUT POSITIVE FIXED OUTPUT REGULATOR |
| 中文描述： | 雙6A和1A低壓差型正，固定輸出穩(wěn)壓器 |
| 文件頁數(shù)： | 2/6頁 |
| 文件大小： | 41K |
| 代理商： | US1261CM |
US1261
3-2
Rev. 1.7
3/22/99
Unless otherwise specified ,these specifications apply over ,Cin=1 uF,Cout=100uF,and Tj=0 to 150
°
C.Typical
values refer to Tj=25
°
C. Ifl=6A for output #2 & 1A for output #1.Vctrl=5V,Vin=3.3V.
PARAMETER
SYM
TEST CONDITION
Vctrl Input Voltage
Output Voltage #2 Vo2
Io=10mA, Tj=25
°
C 1.485 1.500
Io=10mA 1.470 1.500
Output Voltage #1 Vo1
Io=10mA, Tj=25
°
C 2.462 2.500
Io=10mA 2.425 2.500
Line Regulation
Io=10mA, 3.1V<Vin<3.6V
Load Regulation (note 1)
10mA<Io<Ifl
Dropout Voltage (output #2)
Note 2,
Io=6A, Vctrl=4.75V
Dropout Voltage (output #1)
Note 2,
Io=1A, Vctrl=4.75V
Current Limit (output #2)
dVo=100mV
Current Limit (output #1)
dVo=100mV
Minimum Load Current
(note 3)
Thermal Regulation
30 mS PULSE,Io=Ifl
Ripple Rejection
f=120HZ ,Co=25uF Tan
Io=0.5*Ifl
Temperature Stability
Io=10mA
Long Term Stability
Tj=125
°
C,1000 Hrs
RMS Output Noise
10hz<f<10khz
MIN
3.0
TYP
MAX
UNITS
V
1.515 V
1.530
2.537 V
2.575
0.2
0.4
%
%
1.3
V
0.4
0.6
V
A
A
mA
6.1
1.1
5
10
0.01
0.02
%/W
70 dB
0.5
0.3
0.003
%
%
%Vo
Note 3 :
Minimum load current is defined as the mini-
mum current required at the output in order for the out-
put voltage to maintain regulation. Typically the resistor
dividers are selected such that it automatically main-
tains this current.
ABSOLUTE MAXIMUM RATINGS
Input Voltage (Vin) ............................................................. 10V
Power Dissipation ............................................ Internally Limited
Storage Temperature Range ................................ -65
°
C TO 150
°
C
Operating Junction Temperature Range ...................... 0
°
C TO 150
°
C
PACKAGE INFORMATION
7 PIN PLASTIC TO220
7 PIN PLASTIC TO263
7 PIN POWER FLEX (P)
θ
JT
=2.7
°
C/W
θ
JA
=60
°
C/W
θ
JA
=30
°
C/W for 1"sq pad
θ
JA
=30
°
C/W for 1"sq pad
ELECTRICAL SPECIFICATIONS
Note 1 :
Low duty cycle pulse testing with Kelvin con-
nections are required in order to maintain accurate data.
Note 2 :
Drop-out voltage is defined as the minimum
differential voltage between Vin and Vout required to main-
tain regulation at Vout. It is measured when the output
voltage drops 1% below its nominal value.
FRONT VIEW
1
2
3
4
5
Vctrl
Gnd
Vout2
Vin
Vout1
Vctrl
Gnd
Vout2
Vin
Vout1
FRONT VIEW
1
2
3
4
5
FRONT VIEW
1
2
3
4
5
Vctrl
Gnd
Vout2
Vin
Vout1
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