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L4990 डेटा पत्रक PDF( Datasheet डाउनलोड )


डेटा पत्रक - PRIMARY CONTROLLER - STMicroelectronics

भाग संख्या L4990
समारोह PRIMARY CONTROLLER
मैन्युफैक्चरर्स STMicroelectronics 
लोगो STMicroelectronics लोगो 
पूर्व दर्शन
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<?=L4990?> डेटा पत्रक पीडीएफ

L4990 pdf
L4990 - L4990A
ABSOLUTE MAXIMUM RATINGS
Symbol
VCC
IOUT
Ptot
Tj
Tstg
Parameter
Supply Voltage (ICC < 50mA) (*)
Output Peak Pulse Current
Analog Inputs & Outputs (6,7)
Analog Inputs & Outputs (1,2,3,4,5,15,14 13)
Power Dissipation @ Tamb = 70°C
Junction Temperature, Operating Range
Storage Temperature, Operating Range
(*) maximum package power dissipation limits must be observed
Value
selflimit
1.5
-0.3 to 8
-0.3 to 6
1
-25 to 125
-55 to 150
Unit
V
A
V
V
W
°C
°C
PIN CONNECTION
SYNC
RCT
DC
VREF
VFB
COMP
SS
VCC
1 16
2 15
3 14
4 13
5 12
6 11
7 10
89
D95IN197
THERMAL DATA
Symbol
Rth j-amb
Rth j-amb
Parameter
Thermal Resistance Junction to Ambient
Thermal Resistance Junction to Ambient
N.C.
DC-LIM
DIS
ISEN
SGND
PGND
OUT
VC
DIP16
SO16
Value
80
120
Unit
°C/W
°C/W
PIN FUNCTIONS
N. Name
1 SYNC
2 RCT
3 DC
4 VREF
5 VFB
6 COMP
7 SS
8 VCC
9 VC
10 OUT
11 PGND
12 SGND
13 ISEN
14 DIS
15 DC-LIM
16 NC
Fun ction
Synchronization. A synchronization pulse terminates the PWM cycle and discharges Ct
Oscillator pin for external Ct, Rt components
Duty Cycle control
5.0V +/-1.5% reference voltage
Error Amplifier Inverting input
Error Amplifier Output
Soft start pin for external capacitor Css
Supply for internal ”Signal” circuitry
Supply for Power section
High current totem pole output
Power ground
Signal ground
Current sense
Disable. It must never be left floating. Tie to SGND if not used.
Connecting this pin to Vref, DC is limited to 50%. If it is left floating or grounded no limitation is
imposed
Not connected
2/24

विन्यास 24 पेज
डाउनलोड[ L4990 Datasheet.PDF ]


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L4990PRIMARY CONTROLLERSTMicroelectronics
STMicroelectronics
L4990APRIMARY CONTROLLERSTMicroelectronics
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