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Numéro de référence | L4938N | ||
Description | DUAL MULTIFUNCTION VOLTAGE REGULATOR | ||
Fabricant | STMicroelectronics | ||
Logo | |||
1 Page
L4938N/ND
® L4938NPD
DUAL MULTIFUNCTION VOLTAGE REGULATOR
. STANDBYOUTPUT VOLTAGEPRECISION 5V
± 2%
. OUTPUT 2 TRACKED TOTHESTANDBY OUT-
PUT
. OUTPUT 2 DISABLE FUNCTION FOR
STANDBY MODE
. VERY LOW QUIESCENT CURRENT, LESS
THAN 250µA, IN STANDBY MODE
. OUTPUT 2 VOLTAGE SETTABLE FROM 5 TO
20V
. OUTPUT CURRENTS : I01 = 50mA,I02 = 500mA
. VERY LOW DROPOUT (max 0.4V/0.6V)
. OPERATING TRANSIENT SUPPLY VOLTAGE
UP TO 40V
. POWER-ON RESET CIRCUIT SENSING THE
STANDBY OUTPUT VOLTAGE
. POWER-ON RESET DELAY PULSE DEFINED
BY THE EXTERNAL CAPACITOR
. EARLY WARNING OUTPUT FOR SUPPLY UN-
DERVOLTAGE
. THERMAL SHUTDOWN AND SHORTCIRCUIT
PROTECTIONS
PowerDIP
(12+2+2)
SO20
(12+4+4)
PowerSO20
ORDERING NUMBERS: L4938N (PDIP)
L4938ND (SO)
L4938NPD (PSO20)
DESCRIPTION
The L4938N is a monolithic integrated dual voltage
regulatorswith two very low dropout outputsand ad-
ditional functions such as power-on reset and input
voltage sense. They are designedfor supplying mi-
crocomputer controlled systems specially in auto-
motive applications.
PIN CONNECTION (top view)
POWERDIP
SO20
PowerSO20
N.C.
CT
EN
GND
GND
RES
SO
VO1
1 16
2 15
3 14
4 13
5 12
6 11
7 10
89
D95AT156
SI
VS1
VS2
GND
GND
VO2
VO2
ADJ
N.C.
C7
EN
GND
GND
GND
GND
RES
SO
VO1
1 20
2 19
3 18
4 17
5 16
6 15
7 14
8 13
9 12
10 11
D93AT004
SI
VS1
VS2
GND
GND
GND
GND
VO2
VO2
ADJ
GND
N.C.
VS2
VS1
SI
N.C.
CT
EN
N.C.
GND
1 20
2 19
3 18
4 17
5 16
6 15
7 14
8 13
9 12
10 11
D95AT169A
GND
N.C.
VO2
ADJ
VO1
SO
RESET
N.C.
N.C.
GND
April 1999
1/12
This is advanced information on a new product now in development or undergoing evaluation. Details are subject to change without notice.
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Pages | Pages 12 | ||
Télécharger | [ L4938N ] |
No | Description détaillée | Fabricant |
L4938E | ADVANCED VOLTAGE REGULATOR | STMicroelectronics |
L4938ED | ADVANCED VOLTAGE REGULATOR | STMicroelectronics |
L4938EPD | ADVANCED VOLTAGE REGULATOR | STMicroelectronics |
L4938N | DUAL MULTIFUNCTION VOLTAGE REGULATOR | STMicroelectronics |
US18650VTC5A | Lithium-Ion Battery | Sony |
TSPC106 | PCI Bus Bridge Memory Controller | ATMEL |
TP9380 | NPN SILICON RF POWER TRANSISTOR | Advanced Semiconductor |
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