L4993MD STMicroelectronics, L4993MD Datasheet - Page 6

• Manufacturer Part Number: L4993MD
• Description: IC REG LDO 5V 150MA 20SOIC
• Manufacturer: STMicroelectronics

Specifications of L4993MD

• Regulator Topology: Positive Fixed
• Voltage - Output: 5V
• Voltage - Input: 5.6 ~ 31 V
• Voltage - Dropout (typical): 0.2V @ 150mA
• Number Of Regulators: 1
• Current - Output: 150mA
• Current - Limit (min): 150mA
• Operating Temperature: -40°C ~ 150°C
• Mounting Type: Surface Mount
• Package / Case: 20-SOIC
• Number Of Outputs: 1
• Polarity: Negative, Positive
• Input Voltage Max: 40 V
• Output Voltage: - 0.3 V to + 6 V
• Output Type: Adjustable
• Dropout Voltage (max): 0.4 V at 150 mA
• Output Current: 150 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

Block diagram and pins description
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Table 2.
Figure 2.
name
WEn
N.C.
Gnd
Gnd
Vcw
Res
Pin
Vcr
Vo
Wi
Vs
s
WEn
GND
Res
Vcr
Pins description
Pins configuration
SO-8 (D)
3
4
1
2
1
2
3
4
5
6
7
8
SO-8
2, 3, 8, 9, 12,
SO-20 (MD)
5, 6, 15, 16
13, 18, 19
8
7
6
5
10
11
14
17
20
1
4
7
Vs
Vos
Wi
Vcw
Watchdog Enable input
If high watchdog functionality is active
Ground reference
Ground
Connected these pins to a heat spreader ground
Reset output.
It is pulled down when output voltage goes below Vo_th
or frequency at Wi is too low.
Leave floating if not used.
Reset timing adjust.
A capacitor between Vcr pin and gnd, sets the reset
delay time (trd)
Watchdog timer adjust
A capacitor between Vcw pin and gnd, sets the time
response of the watchdog monitor.
Watchdog input.
If the frequency at this input pin is too low, the Reset
output is activated.
Connect to ground if not used
Voltage regulator output
Block to ground with a capacitor >100nF (needed for
regulator stability)
Supply voltage
Block to ground directly at IC pin with a capacitor
Not connected
GND
GND
WEn
GND
N.C.
N.C.
Res
N.C.
N.C.
Vcr
1
2
3
4
5
6
7
8
10
9
Function
SO-20
16
14
15
13
19
18
17
12
11
20
GND
N.C.
Vs
N.C.
N.C.
Vos
GND
Wi
N.C.
Vcw
L4993