S-1206B18-I6T2G Seiko Instruments, S-1206B18-I6T2G Datasheet - Page 12
![IC, LDO VOLT REG, 1.8V, 250mA, SNT-6A-6](/photos/19/9/190938/4579204_sml.jpg)
S-1206B18-I6T2G
Manufacturer Part Number
S-1206B18-I6T2G
Description
IC, LDO VOLT REG, 1.8V, 250mA, SNT-6A-6
Manufacturer
Seiko Instruments
Specifications of S-1206B18-I6T2G
Primary Input Voltage
6.5V
Output Voltage Fixed
1.8V
Dropout Voltage Vdo
150mV
No. Of Pins
6
Output Current
250mA
Operating Temperature Range
-40°C To +85°C
Output Voltage
5.2V
Polarity
Positive
Input Voltage Max
7 V
Output Type
Fixed
Dropout Voltage (max)
3 V at 100 mA
Load Regulation
20 mV
Voltage Regulation Accuracy
1 %
Maximum Power Dissipation
500 mW
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Package / Case
SNT-6A
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
12
ULTRA LOW CURRENT CONSUMPTION AND LOW DROPOUT CMOS VOLTAGE REGULATOR
S-1206 Series
Operation
1. Basic Operation
2. Output Transistor
3. Overcurrent protector
Figure 11 shows the block diagram of the S-1206 Series.
The error amplifier compares the reference voltage (V
feedback resistors R
output voltage free of any fluctuations of input voltage and temperature.
The S-1206 Series uses a low-on-resistance P-channel MOS FET as the output transistor.
Be sure that V
from the VOUT pin through a parasitic diode to the VIN pin.
The S-1206 Series has an overcurrent protection circuit having the characteristics shown in “(1) Output Voltage vs.
Output Current (Ta = 25°C)” in “
an excessive output current and short circuiting between the VOUT and VSS pins. The current (I
output pin is short-circuited is internally set at approx. 130 mA (typ.) (1.2 V ≤ V
V ≤ V
Caution Using the overcurrent protection circuit is to protect the output transistor from accidental
OUT
< 5.2 V), and the normal value is restored for the output voltage, if releasing a short circuit once.
conditions such as short circuited load and the rapid and large current flow in the large capacitor.
The overcurrent protection circuit is not suitable for use under the short circuit status or large
current flowing (150 mA or more (1.2 V ≤ V
long.
OUT
current supply
*1. Parasitic diode
does not exceed V
VIN
VSS
Constant
s
and R
Reference voltage
V
f
. It supplies the output transistor with the gate voltage necessary to ensure a certain
ref
circuit
Characteristics (Typical Data)”, in order to protect the output transistor against
IN
+ 0.3 V to prevent the IC from being damaged due to inverse current flowing
Error amplifier
Seiko Instruments Inc.
−
+
Figure 11
ref
OUT(S)
) with V
< 1.5 V), or 250 mA or more (1.5 V ≤ V
fb
, which is the output voltage resistance-divided by
V
OUT
R
R
fb
f
s
< 2.3 V) or approx. 100 mA (typ.) (2.3
*1
VOUT
SHORT
OUT(S)
Rev.3.0
) when the
)) that last
_00