S-1170B15PD-OTATFG Seiko Instruments, S-1170B15PD-OTATFG Datasheet - Page 14

• Manufacturer Part Number: S-1170B15PD-OTATFG
• Description: IC REG LDO 800MA 1.5V HSON-6A
• Manufacturer: Seiko Instruments

Specifications of S-1170B15PD-OTATFG

• Regulator Topology: Positive Fixed
• Voltage - Output: 1.5V
• Voltage - Input: 2 ~ 6.5 V
• Voltage - Dropout (typical): 0.35V @ 300mA
• Number Of Regulators: 1
• Current - Output: 800mA (Min)
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 6-HSON
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Limit (min): -

14
HIGH RIPPLE-REJECTION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR
S-1170 Series
Operation
2. Output transistor
1. Basic operation
Figure 12 shows the block diagram of the S-1170 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-1170 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.
OUT
does not exceed V
*1.
VSS
VIN
Current
supply
Reference voltage
Parasitic diode
V
ref
s
circuit
and R
IN
Seiko Instruments Inc.
f
+ 0.3 V to prevent the voltage regulator from being damaged due
. It supplies the output transistor with the gate voltage necessary
amplifier
−
+
Error
Figure 12
ref
) with V
R
R
s
f
fb
V
, which is the output voltage resistance-
*1
fb
VOUT
Rev.4.0
_00