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L7908ACD2T 数据表(PDF) 6 Page - STMicroelectronics

部件名 L7908ACD2T
功能描述  NEGATIVE VOLTAGE REGULATORS
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

L7908ACD2T 数据表(HTML) 6 Page - STMicroelectronics

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L7900 SERIES
6/16
ELECTRICAL CHARACTERISTICS OF L7915C (refer to the test circuits, TJ = 0 to 125°C, VI = -23V,
IO =500 mA, CI =2.2 µF, CO = 1 µF unless otherwise specified).
(*) 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 cycle is used.
ELECTRICAL CHARACTERISTICS OF L7918C (refer to the test circuits, TJ = 0 to 125°C, VI = -27V,
IO =500 mA, CI =2.2 µF, CO = 1 µF unless otherwise specified).
(*) 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 cycle is used.
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
VO
Output Voltage
TJ = 25°C
-14.4
-15
-15.6
V
VO
Output Voltage
IO =-5mAto -1A PO ≤ 15 W
VI = -18.5 to -30 V
-14.3
-15
-15.7
V
∆V
O(*)
Line Regulation
VI = -17.5 to -30 V
TJ = 25°C
300
mV
VI = -20 to -26 V
TJ = 25°C
150
∆V
O(*)
Load Regulation
IO =5mAto 1.5 A
TJ = 25°C
300
mV
IO = 250 to 750 mA
TJ = 25°C
150
Id
Quiescent Current
TJ = 25°C
3
mA
∆I
d
Quiescent Current Change
IO =5mAto 1 A
0.5
mA
VI = -18.5 to -30 V
1
∆V
O/∆T
Output Voltage Drift
IO = 5 mA
-0.9
mV/°C
eN
Output Noise Voltage
B = 10Hz to 100KHz
TJ = 25°C
250
µV
SVR
Supply Voltage Rejection
∆V
I = 10 V
f = 120Hz
54
60
dB
Vd
Dropout Voltage
IO =1A
TJ = 25°C
∆V
O = 100 mV
1.1
V
Isc
Short Circuit Current
1.3
A
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
VO
Output Voltage
TJ = 25°C
-17.3
-18
-18.7
V
VO
Output Voltage
IO =-5mAto -1A PO ≤ 15 W
VI = -22 to -33 V
-17.1
-18
-18.9
V
∆V
O(*)
Line Regulation
VI = -21 to -33 V
TJ = 25°C
360
mV
VI = -24 to -30 V
TJ = 25°C
180
∆V
O(*)
Load Regulation
IO =5mAto 1.5 A
TJ = 25°C
360
mV
IO = 250 to 750 mA
TJ = 25°C
180
Id
Quiescent Current
TJ = 25°C
3
mA
∆I
d
Quiescent Current Change
IO =5mAto 1 A
0.5
mA
VI = -22 to -33 V
1
∆V
O/∆T
Output Voltage Drift
IO = 5 mA
-1
mV/°C
eN
Output Noise Voltage
B = 10Hz to 100KHz
TJ = 25°C
300
µV
SVR
Supply Voltage Rejection
∆V
I = 10 V
f = 120Hz
54
60
dB
Vd
Dropout Voltage
IO =1A
TJ = 25°C
∆V
O = 100 mV
1.1
V
Isc
Short Circuit Current
1.1
A


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