HIGH RIPPLE-REJECTION AND LOW DROPOUT MIDDLE-OUTPUT CURRENT
CMOS VOLTAGE REGULATOR
The S-1133 Series is a positive voltage regulator with a low dropout
voltage, high output voltage accuracy, and low current consumption
(300 mA output current) developed based on CMOS technology.
A 1 µF small ceramic capacitor can be used*1. It operates with low
current consumption of 60 µA typ. The S-1133 Series includes an
overcurrent protection circuit that prevents the output current from
exceeding the current capacitance of the output transistor and a
thermal shutdown circuit that prevents damage due to overheating.
In addition to the types in which output voltage is set inside the IC,
a type for which output voltage can be set via an external resistor is
added to a lineup (S-1133x00 Series). SOT-89-5 and super-small
SNT-8A packages realize high-density mounting. This, in addition
to low current consumption, makes the S-1133 Series ideal for
*1. A ceramic capacitor of 2.2 µF or more can be used for products
whose output voltage is 1.7 V or less.
• Output voltage :
• Voltage setting via external resistor :
• Input voltage range :
• High-accuracy output voltage :
• Low dropout voltage :
• Low current consumption :
• Output current :
• Low ESR capacitor can be used :
• High ripple rejection :
• Built-in overcurrent protection circuit :
• Built-in thermal shutdown circuit :
• Built-in ON/OFF circuit :
• Small package :
• Lead-free products
1.2 to 6.0 V, selectable in 0.1 V steps.
Selectable from 1.8 to 8.2 V (S-1133B00/S-1133A00)
2.0 to 10 V
±1.0% accuracy (1.2 to 1.4 V output product : ±15 mV accuracy)
130 mV typ. (3.0 V output product, IOUT = 100 mA)
During operation : 60 µA typ., 90 µA max.
During shutdown : 0.1 µA typ., 1.0 µA max.
300 mA output is possible (at VIN ≥ VOUT(S) + 1.0 V)*1
A ceramic capacitor of 1.0 µF or more can be used for the input and output
(A ceramic capacitor of 2.2 µF or more can be used for products whose
output voltage is 1.7 V or less.)
70 dB typ. (at 1.0 kHz, VOUT = 1.2 V)
Overcurrent of output transistor can be restricted.
Prevents damage due to overheating.
Ensures long battery life.
*1. Attention should be paid to the power dissipation of the package when the output current is large.
• Power supply for battery-powered devices
• Power supply for communication devices
• Power supply for home electric appliances
Seiko Instruments Inc.