
SiP79LxxAC Series
Vishay Siliconix
New Product
Document Number: 72371
S-32698—Rev. A, 19-Jan-04
www.vishay.com
5
SPECIFICATIONSa
SiP79L18AC
Test Conditions Unless Specified
Limits
Parameter
Symbol
0_C < TJ < 125_C, VIN = 27 V
IOUT = 40 mA, CIN = 0.33 mF, COUT = 0.1 mF
Minb
Typc
Maxb
Unit
Output Voltage
VOUT
TJ = 25_C
17.3
18
18.7
VDC
Line Regulation
REGli
TJ = 25_C IOUT = 40 mA
20.7 V v VIN v 33 V
70
325
Line Regulation
REGline
TJ = 25_C, IOUT = 40 mA
22 V v VIN v 33 V
64
275
mV
Load Regulation
REGld
TJ = 25_C
1.0 mA v IOUT v 100 mA
30
170
mV
Load Regulation
REGload
TJ = 25_C
1.0 mA v IOUT v 40 mA
15
85
Output Voltage
VOUT
20.7 V v VIN v 38 V, 1.0 mA v IOUT v 40 mA
17.1
18.9
V
Output Voltage
VOUT
VIN = 27 V, 1.0 mA v IOUT v 70 mA
17.1
18.9
V
Quiescent Current
IQ
TJ = 25_C
3.1
6.5
Quiescent Current
IQ
TJ = 125_C
6.0
mA
Quiescent Current Change
DIQ
22 V v VIN v 33 V
1.5
mA
Quiescent Current Change
DIQ
1.0 mA v IOUT v 40 mA
0.2
Output Noise Voltage
VN
TA = 25_C, 10 Hz v f v 100 kHz
150
mV
Ripple Rejection
RR
IOUT = 40 mA, f = 120 Hz, 23 V v VIN v 33 V, TJ = 25_C
36
48
dB
Dropout Voltage
VDROP
TJ = 25_C
1.7
VDC
SPECIFICATIONSa
SiP79L24AC
Test Conditions Unless Specified
Limits
Parameter
Symbol
0_C < TJ < 125_C, VIN = 33 V
IOUT = 40 mA, CIN = 0.33 mF, COUT = 0.1 mF
Minb
Typc
Maxb
Unit
Output Voltage
VOUT
TJ = 25_C
23
24
25
VDC
Line Regulation
REGli
TJ = 25_C IOUT = 40 mA
27.0 V v VIN v 38 V
35
350
Line Regulation
REGline
TJ = 25_C, IOUT = 40 mA
28 V v VIN v 38 V
30
300
mV
Load Regulation
REGld
TJ = 25_C
1.0 mA v IOUT v 100 mA
40
200
mV
Load Regulation
REGload
TJ = 25_C
1.0 mA v IOUT v 40 mA
20
100
Output Voltage
VOUT
27 V v VIN v 38 V, 1.0 mA v IOUT v 40 mA
22.8
25.2
V
Output Voltage
VOUT
VIN = 33 V, 1.0 mA v IOUT v 70 mA
22.8
25.2
V
Quiescent Current
IQ
TJ = 25_C
3.1
6.5
Quiescent Current
IQ
TJ = 125_C
6.0
mA
Quiescent Current Change
DIQ
28 V v VIN v 38 V
1.5
mA
Quiescent Current Change
DIQ
1.0 mA v IOUT v 40 mA
0.2
Output Noise Voltage
VN
TA = 25_C, 10 Hz v f v 100 kHz
200
mV
Ripple Rejection
RR
IOUT = 40 mA, f = 120 Hz, 29 V v VIN v 35 V, TJ = 25_C
30
47
dB
Dropout Voltage
VDROP
TJ = 25_C
1.7
VDC
Notes
a.
To maintain the specified junction temperatures, low duty cycle pulse testing is required for most parameters. All characteristics are measured with a 0.33 mF
capacitor across the input and a 0.1 mF capacitor across the output.
b.
The algebraic convention whereby the most negative value is a minimum and the most positive a maximum, is used in this data sheet.
c.
Typical values are for DESIGN AID ONLY, not guaranteed or subject to production testing.