DataSheet8.cn


PDF ( 数据手册 , 数据表 ) 79XX

零件编号 79XX
描述 NEGATIVE VOLTAGE REGULATORS
制造商 STMicroelectronics
LOGO STMicroelectronics LOGO 


1 Page

No Preview Available !

79XX 数据手册, 描述, 功能
www.DataSheet4U.com
L7900
SERIES
NEGATIVE VOLTAGE REGULATORS
s OUTPUT CURRENT UP TO 1.5A
s OUTPUT VOLTAGES OF -5; -5.2; -6; -8; -9;
-12; -15; -18; -20; -22; -24V
s THERMAL OVERLOAD PROTECTION
s SHORT CIRCUIT PROTECTION
s OUTPUT TRANSITION SOA PROTECTION
DESCRIPTION
The L7900 series of three-terminal negative
regulators is available in TO-220, TO-220FP,
TO-3 and D2PAK packages and several fixed
output voltages, making it useful in a wide range of
applications. These regulators can provide local
on-card regulation, eliminating the distribution
problems associated with single point regulation;
furthermore, having the same voltage option as
the L7800 positive standard series, they are
particularly suited for split power supplies. In
addition, the -5.2V is also available for ECL
system. If adequate heat sinking is provided, they
can deliver over 1.5A output current.
Although designed primarily as fixed voltage
regulators, these devices can be used with
external components to obtain adjustable voltages
and currents.
SCHEMATIC DIAGRAM
TO-220
D2PAK
TO-220FP
TO-3
February 2003
1/16







79XX pdf, 数据表
www.DataSheet4U.com
L7900 SERIES
ELECTRICAL CHARACTERISTICS OF L7924C (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).
Symbol
Parameter
Test Conditions
Min. Typ. Max. Unit
VO Output Voltage
TJ = 25°C
-23 -24 -24.5 V
VO Output Voltage
IO = -5 mA to -1 A PO 15 W
VI = -27 to -38 V
-22.8 -24 -25.2 V
VO(*) Line Regulation
VI = -27 to -38 V
TJ = 25°C
480 mV
VI = -30 to -36 V
TJ = 25°C
240
VO(*) 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
Id Quiescent Current Change IO = 5 mA to 1 A
0.5 mA
VI = -27 to -38 V
1
VO/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 VI = 10 V f = 120Hz
54 60
dB
Vd Dropout Voltage
IO = 1 A
TJ = 25°C VO = 100 mV
1.1
V
Isc Short Circuit Current
1.1 A
(*) 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 1 : 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.
8/16







79XX equivalent, schematic
www.DataSheet4U.com
L7900 SERIES
Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the
consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from
its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications
mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information
previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or
systems without express written approval of STMicroelectronics.
© The ST logo is a registered trademark of STMicroelectronics
© 2003 STMicroelectronics - Printed in Italy - All Rights Reserved
STMicroelectronics GROUP OF COMPANIES
Australia - Brazil - Canada - China - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan - Malaysia - Malta - Morocco
Singapore - Spain - Sweden - Switzerland - United Kingdom - United States.
© http://www.st.com
16/16










页数 16 页
下载[ 79XX.PDF 数据手册 ]


分享链接

Link :

推荐数据表

零件编号描述制造商
79XXNEGATIVE VOLTAGE REGULATORSSTMicroelectronics
STMicroelectronics

零件编号描述制造商
STK15C88256-Kbit (32 K x 8) PowerStore nvSRAMCypress Semiconductor
Cypress Semiconductor
NJM4556DUAL HIGH CURRENT OPERATIONAL AMPLIFIERNew Japan Radio
New Japan Radio
EL1118-G5 PIN LONG CREEPAGE SOP PHOTOTRANSISTOR PHOTOCOUPLEREverlight
Everlight


DataSheet8.cn    |   2020   |  联系我们   |   搜索  |  Simemap