S-1721A1212-I6T1G SII [Seiko Instruments Inc], S-1721A1212-I6T1G Datasheet - Page 2

• Manufacturer Part Number: S-1721A1212-I6T1G
• Description: SUPER-SMALL PACKAGE 2-CIRCUIT HIGH RIPPLE-REJECTION LOW CURRENT CONSUMPTION LOW DROPOUT CMOS VOLTAGE REGULATOR
• Manufacturer: SII [Seiko Instruments Inc]

2
SUPER-SMALL PACKAGE 2-CIRCUIT HIGH RIPPLE-REJECTION LOW CURRENT CONSUMPTION LOW DROPOUT CMOS VOLTAGE REGULATOR
S-1721 Series
2. S-1721 Series B type
Block Diagrams
1. S-1721 Series A type
*1. Parasitic diode
*1. Parasitic diode
ON/OFF1
ON/OFF2
ON/OFF1
ON/OFF2
VIN
VIN
ON/OFF
ON/OFF
ON/OFF
ON/OFF
circuit
circuit
voltage circuit
voltage circuit
circuit
circuit
voltage circuit
voltage circuit
Overcurrent
Overcurrent
Overcurrent
Overcurrent
protector
Reference
protector
Reference
protector
Reference
protector
Reference
Seiko Instruments Inc.
+
−
+
−
+
−
+
−
*1
*1
*1
*1
Figure 1
Figure 2
VOUT1
VSS
VOUT2
VOUT1
VSS
VOUT2
ON/OFF logic
Pull-up resistor
Pull-down resistor
ON/OFF logic
Pull-up resistor
Pull-down resistor
Function
Function
1ch None
1ch Active “H”
1ch Active “H”
2ch Active “H”
2ch None
1ch Available
2ch Available
2ch Active “L”
1ch None
2ch Available
1ch Available
2ch None
Rev.1.1
Status
Status
_00