S-1131B54UA-N5NTFG Seiko Instruments, S-1131B54UA-N5NTFG Datasheet - Page 13
![IC REG LDO 300MA 5.4V SOT89-3](/photos/12/63/126323/s-812c50aua-c3et2g_sml.jpg)
S-1131B54UA-N5NTFG
Manufacturer Part Number
S-1131B54UA-N5NTFG
Description
IC REG LDO 300MA 5.4V SOT89-3
Manufacturer
Seiko Instruments
Datasheet
1.S-1131B15UA-N4ATFG.pdf
(30 pages)
Specifications of S-1131B54UA-N5NTFG
Regulator Topology
Positive Fixed
Voltage - Output
5.4V
Voltage - Input
Up to 6.5V
Voltage - Dropout (typical)
0.2V @ 100mA
Number Of Regulators
1
Current - Output
300mA (Min)
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
SC-62, SOT-89, TO-243 (3 Leads + Tab)
Number Of Outputs
1
Polarity
Positive
Input Voltage Max
6.5 V
Output Voltage
5.4 V
Output Type
Fixed
Dropout Voltage (max)
0.28 V at 100 mA
Output Current
300 mA
Line Regulation
0.2 % / V
Load Regulation
40 mV
Voltage Regulation Accuracy
1 %
Maximum Power Dissipation
0.5 W
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
- 40 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Current - Limit (min)
-
Lead Free Status / Rohs Status
Details
Rev.4.0
Operation
2. Output transistor
1. Basic operation
HIGH RIPPLE-REJECTION LOW DROPOUT MIDDLE OUTPUT CURRENT CMOS VOLTAGE REGULATOR
Figure 13 shows the block diagram of the S-1131 Series.
The error amplifier compares the reference voltage (V
divided by feedback resistors R
to ensure a certain output voltage free of any fluctuations of input voltage and temperature.
The S-1131 Series uses a low on-resistance P-channel MOS FET as the output transistor.
Be sure that V
to inverse current flowing from VOUT pin through a parasitic diode to VIN pin.
_00
OUT
does not exceed V
*1.
VSS
VIN
Current
supply
Reference voltage
Parasitic diode
V
ref
s
circuit
and R
IN
Seiko Instruments Inc.
+ 0.3 V to prevent the voltage regulator from being damaged due
f
. It supplies the output transistor with the gate voltage necessary
amplifier
−
+
Error
Figure 13
ref
) with V
R
R
s
f
V
fb
fb
, which is the output voltage resistance-
*1
VOUT
S-1131 Series
13