S-1721 Datasheet, PDF (2/38 Pages) Seiko Instruments Inc – SUPER-SMALL PACKAGE 2-CIRCUIT HIGH RIPPLE-REJECTION LOW CURRENT CONSUMPTION LOW DROPOUT CMOS VOLTAGE REGULATOR

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