S-1721 Seiko Instruments, S-1721 Datasheet - Page 3

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

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Rev.1.1
3. S-1721 Series C type
4. S-1721 Series D type
*1. Parasitic diode
SUPER-SMALL PACKAGE 2-CIRCUIT HIGH RIPPLE-REJECTION LOW CURRENT CONSUMPTION LOW DROPOUT CMOS VOLTAGE REGULATOR
*1. Parasitic diode
ON/OFF1
ON/OFF2
ON/OFF1
ON/OFF2
_00
VIN
VIN
ON/OFF
ON/OFF
ON/OFF
ON/OFF
circuit
circuit
voltage circuit
voltage circuit
circuit
circuit
Overcurrent
Overcurrent
voltage circuit
voltage circuit
Overcurrent
Overcurrent
Reference
Reference
protector
protector
Reference
Reference
protector
protector
Seiko Instruments Inc.
+
−
+
−
+
−
+
−
*1
*1
*1
*1
Figure 3
Figure 4
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
S-1721 Series
1ch
2ch
1ch
2ch
1ch
2ch
1ch
2ch
1ch
2ch
1ch
2ch
Active “L”
Active “L”
Available
Available
None
None
Active “L”
Active “H”
Available
None
None
Available
Status
Status
3