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L7905ACD2T Datasheet(PDF) 7 Page - STMicroelectronics

Part # L7905ACD2T
Description  2% NEGATIVE VOLTAGE REGULATORS
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

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L7900AC SERIES
7/13
Table 11: Electrical Characteristics Of L7924A (refer to the test circuits, TJ = 0 to 125°C, VI = -33V,
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.
APPLICATIONS INFORMATION
Figure 3: Fixed Output Regulator
NOTE:
1. To specify an output voltage, substitute voltage value for "XX".
2. Required for stability. For value given, capacitor must be solid tantalum. If aluminium electrolytics are used, at least ten times value should
be selected. C1 is required if regulator is located an appreciable distance from power supply filter.
3. To improve transient response. If large capacitors are used, a high current diode from input to output (1N4001 or similar) should be intro-
duced to protect the device from momentary input short circuit.
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
VO
Output Voltage
TJ = 25°C
-23.5
-24
-24.5
V
VO
Output Voltage
IO = -5 mA to -1 A
PO ≤ 15W
VI = -27 to -38 V
-23
-24
-25
V
∆V
O(*)
Line Regulation
VI = -27 to -38 V
TJ = 25°C
480
mV
VI = -30 to -36 V
TJ = 25°C
240
∆V
O(*)
Load Regulation
IO = 5 mA to 1.5 A
TJ = 25°C
480
mV
IO = 250 to 750 mA
TJ = 25°C
240
Id
Quiescent Current
TJ = 25°C
3
mA
∆I
d
Quiescent Current Change
IO = 5 mA to 1 A
0.5
mA
VI = -27 to -38 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
400
µV
SVR
Supply Voltage Rejection
∆V
I = 10 V f = 120Hz
54
60
dB
Vd
Dropout Voltage
IO = 1 A
TJ = 25°C
∆V
O = 100
mV
1.1
V
Isc
Short Circuit Current
1.1
A
Iscp
Short Circuit Peak Current
TJ = 25°C
2.2
A


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