L4988MDTR STMicroelectronics, L4988MDTR Datasheet - Page 6

• Manufacturer Part Number: L4988MDTR
• Description: IC REG LDO 5V 200MA 20SOIC
• Manufacturer: STMicroelectronics
• Series: -r

Specifications of L4988MDTR

• Regulator Topology: Positive Fixed
• Voltage - Output: 5V
• Voltage - Input: 5.6 ~ 31 V
• Voltage - Dropout (typical): 0.27V @ 200mA
• Number Of Regulators: 1
• Current - Output: 200mA
• Current - Limit (min): 200mA
• Operating Temperature: -40°C ~ 150°C
• Mounting Type: Surface Mount
• Package / Case: 20-SOIC
• Number Of Outputs: 1
• Polarity: Negative, Positive
• Output Voltage: - 0.3 V to + 6 V
• Output Type: Adjustable
• Dropout Voltage (max): 0.5 V at 200 mA
• Output Current: 200 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
• Reference Voltage: 5.1 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Block diagram and pin configuration
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Table 2.
Figure 2.
name
WEn
N.C.
Gnd
Gnd
Vcw
Res
Pin
Vcr
Wi
Vo
Vs
WEn
GND
Res
Vcr
Pins description
Pins configuration
SO8(D)
4
3
1
2
1
2
3
4
5
6
7
8
SO-8
2, 3, 8, 9, 12,
5, 6, 15, 16
S020(MD)
13, 18, 19
8
7
6
5
10
11
14
17
20
1
4
7
Vs
Vo
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.
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.
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.
Res
N.C.
N.C.
N.C.
Vcr
1
2
3
4
5
6
7
8
10
9
Function
SO-20
16
14
17
15
13
11
20
19
18
12
GND
GND
N.C.
Vs
N.C.
N.C.
Vo
Wi
N.C.
Vcw
L4988