參數(shù)資料
型號： UA78M20Y
廠商： Texas Instruments, Inc.
英文描述： POSITIVE-VOLTAGE REGULATORS
中文描述： 正電壓調(diào)節(jié)器
文件頁數(shù)： 5/18頁
文件大?。?/td> 425K
代理商： UA78M20Y
www.ti.com
Electrical Characteristics
at specified virtual junction temperature, V
I
= 8 V, I
O
= 350 mA, T
J
= 25
°
C (unless otherwise noted)
Electrical Characteristics
at specified virtual junction temperature, V
I
= 10 V, I
O
= 350 mA, T
J
= 25
°
C (unless otherwise noted)
μ
A78M00 SERIES
POSITIVE-VOLTAGE REGULATORS
SLVS059P–JUNE 1976–REVISED OCTOBER 2005
μ
A78M33C
MIN
3.2
3.1
PARAMETER
TEST CONDITIONS
(1)
UNIT
TYP
3.3
3.3
MAX
3.4
3.5
100
50
I
O
= 5 mA to 350 mA,
V
I
= 8 V to 20 V
Output voltage
(2)
V
T
J
= 0
°
C to 125
°
C
V
I
= 5.3 V to 25 V
V
I
= 8 V to 25 V
I
O
= 100 mA, T
J
= 0
°
C to 125
°
C
I
O
= 300 mA
I
O
= 5 mA to 500 mA
9
3
Input voltage regulation
I
O
= 200 mA
mV
62
62
V
= 8 V to 18 V,
f = 120 Hz
Ripple rejection
dB
80
20
Output voltage regulation
Temperature coefficient
of output voltage
Output noise voltage
Dropout voltage
Bias current
V
I
= 8 V,
100
mV
I
O
= 5 mA,
T
J
= 0
°
C to 125
°
C
–1
mV/
°
C
f = 10 Hz to 100 kHz
40
2
4.5
200
μ
V
V
mA
6
I
O
= 200 mA, V
I
= 8 V to 25 V, T
J
= 0
°
C to 125
°
C
I
O
= 5 mA to 350 mA,
V
I
= 35 V
0.8
0.5
Bias current change
mA
T
J
= 0
°
C to 125
°
C
Short-circuit output current
Peak output current
300
700
mA
mA
(1)
All characteristics are measured with a 0.33-
μ
F capacitor across the input and a 0.1-
μ
F capacitor across the output. Pulse-testing
techniques maintain T
as close to T
as possible. Thermal effects must be taken into account separately.
This specification applies only for dc power dissipation permitted by absolute maximum ratings
(2)
μ
A78M05C
MIN
4.8
4.75
PARAMETER
TEST CONDITIONS
(1)
UNIT
TYP
MAX
5.2
5.25
100
50
5
I
O
= 5 mA to 350 mA,
V
I
= 7 V to 20 V
Output voltage
V
T
J
= 0
°
C to 125
°
C
V
I
= 7 V to 25 V
V
I
= 8 V to 25 V
I
O
= 100 mA, T
J
= 0
°
C to 125
°
C
I
O
= 300 mA
3
1
Input voltage regulation
I
O
= 200 mA
mV
62
62
V
= 8 V to 18 V,
f = 120 Hz
Ripple rejection
dB
80
20
10
I
O
= 5 mA to 500 mA
I
O
= 5 mA to 200 mA
100
50
Output voltage regulation
mV
Temperature coefficient
of output voltage
Output noise voltage
Dropout voltage
Bias current
I
O
= 5 mA,
T
J
= 0
°
C to 125
°
C
–1
mV/
°
C
f = 10 Hz to 100 kHz
40
2
4.5
200
μ
V
V
mA
6
I
O
= 200 mA, V
I
= 8 V to 25 V, T
J
= 0
°
C to 125
°
C
I
O
= 5 mA to 350 mA,
V
I
= 35 V
0.8
0.5
Bias current change
mA
T
J
= 0
°
C to 125
°
C
Short-circuit output current
Peak output current
300
0.7
mA
A
(1)
All characteristics are measured with a 0.33-
μ
F capacitor across the input and a 0.1-
μ
F capacitor across the output. Pulse-testing
techniques maintain T
J
as close to T
A
as possible. Thermal effects must be taken into account separately.
5
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