Rev.1.2_00
HIGH OPERATING VOLTAGE
CMOS VOLTAGE REGULATOR
S-812C Series
The S-812C series is a family of high-voltage positive
regulators developed using CMOS technology.
The
maximum operating voltage of 16V makes the S-812C series
best in high-voltage applications.
Not only current
consumption is small but also power-off function is included,
the regulator is also suitable in constructing low-power
portable devices. Combination of power-off function and
short-current protection can be selected.
Features
Applications
• Low current consumption
• Power source for battery-powered devices
Operating current: Typ. 1.0 µA, Max. 1.8 µA (3.0 V)
• Power source for personal communication
• Output voltage: 2.0 to 6.0 V (0.1 V step)
devices
• Output voltage accuracy: ±2.0%
• Power source for home electric/electronic
• Output current:
appliances
Note1
50mA capable (3.0 V output product, VIN=5 V)
Note1
75mA capable (5.0 V output product, VIN=7 V)
• Dropout voltage
Typ. 120 mV (VOUT = 5.0 V, IOUT = 10 mA)
• Power-off function: Polarity for power-off switch or removal of the power-off function can be selected.
• Short-circuit protection: Product with/without short-circuit protection is available.
Short-circuited current : 40 mA typ. for products with protection
• Packages: SOT-23-5 (Package drawing code : MP005-A)
SOT-89-5 (Package drawing code : UP003-A)
SOT-89-3 (Package drawing code : UP005-A)
TO-92
(Package drawing code : YF003-A)
Note1 Power dissipation of the package should be taken into account when the output current is large.
Block Diagram
(1) Product without power-off function
(2) Product with power-off function
(1)
VIN
VOUT
(1)
VIN
(2)
(2)
Short-circuit
protection
Short-circuit
protection
ON/OFF
Reference
Reference
voltage
VSS
VOUT
voltage
(1) : Parasitic diode
(2) : In case of a product with short-circuit protection
VSS
(1) : Parasitic diode
(2) : In case of a product with short-circuit protection
Figure 1 Block Diagram
Seiko Instruments Inc.
1
