Rev.1.0
_00
HIGH RIPPLE-REJECTION LOW DROPOUT
HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR
S-1170 Series
Seiko Instruments Inc.
1
The S-1170 Series is a positive voltage regulator
with a low dropout voltage, high output voltage
accuracy, and low current consumption developed
based on CMOS technology.
A built-in low on-resistance transistor provides a
low dropout voltage and large output current, a
built-in overcurrent protector prevents the load
current from exceeding the current capacitance of
the output transistor, and a built-in thermal
shutdown circuit prevents damage caused by the
heat. An ON/OFF circuit ensures a long battery
life. Compared with the voltage regulators using
the conventional CMOS process, a larger variety
of capacitors are available, including small
ceramic capacitors. Small SOT-89-5 and 6-Pin
HSON(A) packages realize high-density mounting.
Features
Output voltage:
1.5 V to 5.5 V, selectable in 0.1 V steps.
High-accuracy output voltage:
1.0%
Low dropout voltage:
120 mV typ. (3.0 V output product, I
OUT
= 300 mA)
Low current consumption:
During operation: 80
A typ., 160 A max.
During shutdown: 0.1
A typ., 1.0 A max.
High peak current capability:
800 mA output is possible (@ V
IN
V
OUT(S)
+ 1.0 V)
*1
Built-in ON/OFF circuit:
Ensures long battery life.
Low ESR capacitor can be used: A ceramic capacitor of 4.7 F or more can be used for the output
capacitor.
High ripple rejection:
70 dB typ. (@ 1.0 kHz)
Built-in overcurrent protector:
Overcurrent of output transistor can be restricted.
Built-in thermal shutdown circuit: Damage caused by heat can be prevented.
Small package:
SOT-89-5, 6-Pin HSON(A)
*1. Attention should be paid to the power dissipation of the package when the output current is large.
Applications
Power supply for DVD and CD-ROM drives
Power supply for battery-powered devices
Power supply for personal communication devices
Power supply for note PCs
Packages
Package Name
Drawing Code
Package
Tape Reel
SOT-89-5
UP005-A
UP005-A
UP005-A
6-Pin HSON(A)
PD006-A
PD006-A
PD006-A
HIGH RIPPLE-REJECTION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR
Rev.1.0
_00
S-1170 Series
Seiko Instruments Inc.
3
Product Name Structure
The product types, output voltage, and package types for the S-1170 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-1170 x xx xx xxx TF
IC direction in tape specifications
*1
Product abbreviation
*2
Package abbreviation
UC:
SOT-89-5
PD: 6-Pin HSON(A)
Output voltage
15 to 55
(E.g., when the output voltage is 1.5 V, it is
expressed as 15.)
Product type
*3
A: ON/OFF pin negative logic
B: ON/OFF pin positive logic
*1. Refer to the taping specifications at the end of this book.
*2. Refer to the product name list.
*3. Refer to 3. Shutdown pin (ON/OFF pin) under the Operation.
HIGH RIPPLE-REJECTION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR
S-1170 Series
Rev.1.0
_00
4
Seiko Instruments Inc.
2. Product name list
Table 1
Output Voltage
SOT-89-5
6-Pin HSON(A)
1.5 V
1.0%
S-1170B15UC-OTA-TF S-1170B15PD-OTA-TF
1.6 V
1.0%
S-1170B16UC-OTB-TF S-1170B16PD-OTB-TF
1.7 V
1.0%
S-1170B17UC-OTC-TF S-1170B17PD-OTC-TF
1.8 V
1.0%
S-1170B18UC-OTD-TF S-1170B18PD-OTD-TF
1.9 V
1.0%
S-1170B19UC-OTE-TF S-1170B19PD-OTE-TF
2.0 V
1.0%
S-1170B20UC-OTF-TF S-1170B20PD-OTF-TF
2.1 V
1.0%
S-1170B21UC-OTG-TF S-1170B21PD-OTG-TF
2.2 V
1.0%
S-1170B22UC-OTH-TF S-1170B22PD-OTH-TF
2.3 V
1.0%
S-1170B23UC-OTI-TF S-1170B23PD-OTI-TF
2.4 V
1.0%
S-1170B24UC-OTJ-TF S-1170B24PD-OTJ-TF
2.5 V
1.0%
S-1170B25UC-OTK-TF S-1170B25PD-OTK-TF
2.6 V
1.0%
S-1170B26UC-OTL-TF S-1170B26PD-OTL-TF
2.7 V
1.0%
S-1170B27UC-OTM-TF S-1170B27PD-OTM-TF
2.8 V
1.0%
S-1170B28UC-OTN-TF S-1170B28PD-OTN-TF
2.9 V
1.0%
S-1170B29UC-OTO-TF S-1170B29PD-OTO-TF
3.0 V
1.0%
S-1170B30UC-OTP-TF S-1170B30PD-OTP-TF
3.1 V
1.0%
S-1170B31UC-OTQ-TF S-1170B31PD-OTQ-TF
3.2 V
1.0%
S-1170B32UC-OTR-TF S-1170B32PD-OTR-TF
3.3 V
1.0%
S-1170B33UC-OTS-TF S-1170B33PD-OTS-TF
3.4 V
1.0%
S-1170B34UC-OTT-TF S-1170B34PD-OTT-TF
3.5 V
1.0%
S-1170B35UC-OTU-TF S-1170B35PD-OTU-TF
3.6 V
1.0%
S-1170B36UC-OTV-TF S-1170B36PD-OTV-TF
3.7 V
1.0%
S-1170B37UC-OTW-TF S-1170B37PD-OTW-TF
3.8 V
1.0%
S-1170B38UC-OTX-TF S-1170B38PD-OTX-TF
3.9 V
1.0%
S-1170B39UC-OTY-TF S-1170B39PD-OTY-TF
4.0 V
1.0%
S-1170B40UC-OTZ-TF S-1170B40PD-OTZ-TF
4.1 V
1.0%
S-1170B41UC-OUA-TF S-1170B41PD-OUA-TF
4.2 V
1.0%
S-1170B42UC-OUB-TF S-1170B42PD-OUB-TF
4.3 V
1.0%
S-1170B43UC-OUC-TF S-1170B43PD-OUC-TF
4.4 V
1.0%
S-1170B44UC-OUD-TF S-1170B44PD-OUD-TF
4.5 V
1.0%
S-1170B45UC-OUE-TF S-1170B45PD-OUE-TF
4.6 V
1.0%
S-1170B46UC-OUF-TF S-1170B46PD-OUF-TF
4.7 V
1.0%
S-1170B47UC-OUG-TF S-1170B47PD-OUG-TF
4.8 V
1.0%
S-1170B48UC-OUH-TF S-1170B48PD-OUH-TF
4.9 V
1.0%
S-1170B49UC-OUI-TF S-1170B49PD-OUI-TF
5.0 V
1.0%
S-1170B50UC-OUJ-TF S-1170B50PD-OUJ-TF
5.1 V
1.0%
S-1170B51UC-OUK-TF S-1170B51PD-OUK-TF
5.2 V
1.0%
S-1170B52UC-OUL-TF S-1170B52PD-OUL-TF
5.3 V
1.0%
S-1170B53UC-OUM-TF S-1170B53PD-OUM-TF
5.4 V
1.0%
S-1170B54UC-OUN-TF S-1170B54PD-OUN-TF
5.5 V
1.0%
S-1170B55UC-OUO-TF S-1170B55PD-OUO-TF
Remark Please contact the SII marketing department for products with an output voltage other than
those specified above or type A products.
HIGH RIPPLE-REJECTION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR
Rev.1.0
_00
S-1170 Series
Seiko Instruments Inc.
5
Pin Configuration
Table
2
Pin No.
Symbol
Description
1 ON/OFF Shutdown
pin
2 VSS
GND
pin
3
NC
*1
No connection
4
VIN
Input voltage pin
5
VOUT
Output voltage pin
5 4
1 3
2
SOT-89-5
Top view
*1. The NC pin is electrically open.
The NC pin can be connected to VIN and VSS.
Figure 2
Table
3
Pin No.
Symbol
Description
1
VOUT
*1
Output voltage pin
2
VOUT
*1
Output voltage pin
3 ON/OFF Shutdown
pin
4 VSS
GND
pin
5
VIN
*2
Input voltage pin
6
VIN
*2
Input voltage pin
3
2
1
6-Pin HSON(A)
Top view
4
5
6
*1. Short pins 1 and 2.
*2. Short pins 5 and 6.
Figure
3
Absolute Maximum Ratings
Table 4
(Ta
= 25C unless otherwise specified)
Parameter
Symbol
Absolute Maximum Rating
Unit
Input voltage
V
IN
V
SS
- 0.3 to V
SS
+ 7
V
V
ON/OFF
V
SS
- 0.3 to V
IN
+ 0.3
Output voltage
V
OUT
V
SS
- 0.3 to V
IN
+ 0.3
Power dissipation
P
D
SOT-89-5 500
6-Pin
HSON(A)
500
mW
Operating ambient temperature
T
opr
-40 to +85
C
Storage ambient temperature
T
stg
-40 to +125
Caution The absolute maximum ratings are rated values exceeding which the product could suffer
physical damage. These values must therefore not be exceeded under any conditions.
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