Rev.2.1
_00
HIGH RIPPLE-REJECTION AND LOW DROPOUT MIDDLE-OUTPUT CURRENT
CMOS VOLTAGE REGULATOR
S-1133 Series
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
mobile devices.
*1.
A ceramic capacitor of 2.2
µF
or more can be used for products
whose output voltage is 1.7 V or less.
Features
•
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 :
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, I
OUT
=
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 V
IN
≥
V
OUT(S)
+
1.0 V)
*1
A ceramic capacitor of 1.0
µF
or more can be used for the input and output
capacitors.
(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, V
OUT
=
1.2 V)
Overcurrent of output transistor can be restricted.
Prevents damage due to overheating.
Ensures long battery life.
SOT-89-5, SNT-8A
•
High ripple rejection :
•
Built-in overcurrent protection circuit :
•
Built-in thermal shutdown circuit :
•
Built-in ON/OFF circuit :
•
Small package :
•
Lead-free products
*1.
Attention should be paid to the power dissipation of the package when the output current is large.
Applications
•
Power supply for battery-powered devices
•
Power supply for communication devices
•
Power supply for home electric appliances
Packages
Package Name
SOT-89-5
SNT-8A
Drawing Code
Package
UP005-A
PH008-A
Tape
UP005-A
PH008-A
Reel
UP005-A
PH008-A
Land
UP005-A
PH008-A
Seiko Instruments Inc.
1
HIGH RIPPLE-REJECTION AND LOW DROPOUT MIDDLE-OUTPUT CURRENT CMOS VOLTAGE REGULATOR
Rev.2.1
_00
S-1133 Series
Product Name Structure
•
The product types, output voltage, and package types for the S-1133 Series can be selected at the user’s request.
Refer to the “Product
name”
for the meanings of the characters in the product name and “Product
name list”
for the
full product names.
1. Product name
S-1133
x
xx
-
xxxx
G
Package abbreviation and packing specifications
*1
U5T1 : SOT-89-5, Tape
I8T1 : SNT-8A, Tape
Output voltage
00 :
Externally set
12 to 60 : Internally set
(e.g., when the output voltage is 1.2 V, it is expressed as 12.)
Product type
*2
A : ON/OFF pin negative logic
B : ON/OFF pin positive logic
*1.
*2.
Refer to the taping specifications at the end of this book.
Refer to “3. Shutdown pin (ON/OFF pin)” in “Operation”.
Seiko Instruments Inc.
3
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