L4979D STMicroelectronics, L4979D Datasheet - Page 7

• Manufacturer Part Number: L4979D
• Description: IC VOLTAGE REG LDO SO-8
• Manufacturer: STMicroelectronics
• Type: Step-Down (Buck)r

Specifications of L4979D

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 5V
• Current - Output: 150mA
• Voltage - Input: 5.6 ~ 31 V
• Operating Temperature: -40°C ~ 150°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Polarity: Positive
• Input Voltage Max: 31 V
• Output Voltage: 5 V
• Output Type: Fixed
• Dropout Voltage (max): 0.4 V at 150 mA
• Output Current: 300 mA
• Line Regulation: 25 mV
• Load Regulation: 25 mV
• Voltage Regulation Accuracy: 2 %
• Maximum Operating Temperature: + 150 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -
• Frequency - Switching: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

2
2.1
Note:
Electrical specifications
Absolute maximum ratings
Stressing the device above the ratings listed in the “absolute maximum ratings” tables may
cause permanent damage to the device. These are stress ratings only and operation of the
device at these or any other conditions above those indicated in the operating sections of
this specification is not implied. Exposure to the conditions reported in this section for
extended periods may affect device reliability. Refer also to the STMicroelectronics SURE
program and other relevant quality documents.
Table 3.
Maximum ratings are absolute ratings; exceeding any one of these values may cause
permanent damage to the integrated circuit.
Table 4.
Symbol
V
V
Symbol
R
I
V
V
V
V
V
vsdc
V
I
I
vsdc
ESD
th j-amb
T
od
vo
cw
od
en
vo
wi
cr
j
DC supply voltage
Input current
DC output voltage
DC output current
Watchdog input voltage
Open drain output voltage (RES)
Open drain output current (RES)
Reset delay voltage
Watchdog delay voltage
Enable input voltage
Junction temperature
ESD voltage level (HBM-MIL STD 883C)
Absolute maximum ratings
Thermal data
Thermal resistance junction to ambient
Parameter
Doc ID 10262 Rev 7
Parameter
130 to 180
SO8
-0.3 to V
-0.3 to V
-0.3 to V
-0.3 to V
-40 to 150
-0.3 to 40
-0.3 to 40
-0.3 to 6
SO16+2+2
Internally limited
Internally limited
Internally limited
Value
50 to 80
±2
vo
vo
vo
vo
+0.3
+0.3
+0.3
+0.3
°C/W
Unit
Unit
°C
kV
V
V
V
V
V
V
V
7/22