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MC7918CT 数据手册 - Vishay Semiconductor（威世）
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MC7918CT数据手册
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Electrical Characteristics – MC7915
V
in
= –23V, I
out
= 500mA, C
in
= 2µF, C
out
= 1µF;T
J
= 0°C to 125°C, unless otherwise noted.
Parameter Symbol
Test
Conditions Min. Typ. Max. Unit
Circuit
T
J
= 25°C –14.7 –15 –15.3
V
Output Voltage V
o
1
V
in
= –17.5 to –30V,
–14.55 —–15.45
Io = 5mA to 1A
Line Regulation
REG
line
1
V
in
= –17.5 to –30V — 11 300
mV
(T
J
= 25°C)
V
in
= –18 to –22V — 3 150
Load Regulation
REG
load
1
Io = 5mA to 1.5A — 12 300
mV
(T
J
= 25°C)
Io = 250mA to 750mA — 4 150
Quiescent Current I
q
2T
J
= 25°C — 2.5 5 mA
Quiescent Current Change
∆I
q
2
V
in
= –17.5 to –30V —— 1
mA
(T
J
= 25°C)
Io = 5mA to 1A ——0.5
Output Noise Voltage (T
J
= 25°C) V
n
1 f = 10Hz to 100KHz — 90 — µV
Ripple Rejection Ratio RR 3
V
in
= –18 to –28V
54 69 — dB
Io = 100mA, f = 120Hz
Dropout Voltage V
drop
Io = 1.0A, T
J
= 25°C — 1.1 — V
Peak Output Current Io-
peak
1T
J
= 25°C — 2.1 — A
Temp. Coefficient of Output Voltage ∆V
o
/∆T
A
1 Io =5mA, T
J
= 0 to125°C — 0.9 — mV/°C
Electrical Characteristics – MC7918
V
in
= –27V, I
out
= 500mA, C
in
= 2µF, C
out
= 1µF;T
J
= 0°C to 125°C, unless otherwise noted.
Parameter Symbol
Test
Conditions Min. Typ. Max. Unit
Circuit
T
J
= 25°C –17.64 –18.0 –18.36
V
Output Voltage V
o
1
V
in
= –21 to –33V,
–17.46 —–18.54
Io = 5mA to 1A
Line Regulation
REG
line
1
V
in
= –21 to –33V — 15 360
mV
(T
J
= 25°C)
V
in
= –22 to –26V — 5 180
Load Regulation
REG
load
1
Io = 5mA to 1.5A — 12 360
mV
(T
J
= 25°C)
Io = 250mA to 750mA — 4 180
Quiescent Current I
q
2T
J
= 25°C — 2.5 5 mA
Quiescent Current Change
∆I
q
2
V
in
= –21 to –33V —— 1
mA
(T
J
= 25°C)
Io = 5mA to 1A ——0.5
Output Noise Voltage (T
J
= 25°C) V
n
1 f = 10Hz to 100KHz — 110 — µV
Ripple Rejection Ratio RR 3
V
in
= –21 to –31V
53 68 — dB
Io = 100mA, f = 120Hz
Dropout Voltage V
drop
Io = 1.0A, T
J
= 25°C — 1.1 — V
Peak Output Current Io-
peak
1T
J
= 25°C — 2.1 — A
Temp. Coefficient of Output Voltage ∆V
o
/∆T
A
1 Io=5mA, T
J
=0 to125°C —–1 — mV/°C
MC79xxCT Series
Vishay
formerly General Semiconductor
Document Number 74814 www.vishay.com
11-Jun-02 5
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