Rev.2.3
_01
HIGH RIPPLE-REJECTION
LOW DROPOUT CMOS VOLTAGE REGULATOR
S-L2980 Series
The S-L2980 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 a large output current. A shutdown
circuit ensures long battery life.
Various types of output capacitors can be used in the
S-L2980 series compared with the conventional CMOS
voltage regulators. A small ceramic capacitor can also
be used.
Features
•
Output voltage:
•
High accuracy output voltage:
•
Low dropout voltage:
•
Low current consumption:
•
High peak current capability:
•
Built-in shutdown circuit:
•
Low ESR capacitor:
•
High ripple rejection:
•
Small package:
1.5 V to 6.0 V, selectable in 0.1 V steps
±2.0 % accuracy
120 mV typ. (at 3.0 V output product, I
OUT
=50 mA)
During operation: 90
µA
typ., 140
µA
max.
During shutdown: 0.1
µA
typ., 1.0
µA
max.
150 mA output is possible. (at V
IN
≥V
OUT(S)
+1.0 V)
*1
Ensure long battery life.
A 1.0
µF
capacitor can be used as the output capacitor.
(A 2.2
µF
capacitor can be used as the output capacitor for the products
whose output voltage is 1.7 V or less.)
70 dB typ. (at 1.0 kHz)
SOT-23-5, 5-Pin SON(A)
*1.
Attention should be paid to the power dissipation of the package when the load is large.
Applications
•
Power supply for battery-powered devices
•
Power supply for personal communication devices
•
Power supply for home electric/electronic appliances
•
Power supply for cellular phones
Packages
Package Name
SOT-23-5
5-Pin SON(A)
Package
MP005-A
PN005-A
Drawing Code
Tape
MP005-A
PN005-A
Reel
MP005-A
PN005-A
Seiko Instruments Inc.
1
Rev.2.3
_01
HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR
S-L2980 Series
Product Name Structure
•
The product types, output voltage and packages for S-L2980 Series can be selected at the user’s request.
Refer to the “1.
Product Name”
for the construction of the product name and “2.
Product Name List”
for
the full product names.
1. Product Name
S-L2980
x
xx
xx
–
xxx
TF
IC direction in tape specifications
*1
Product name (abbreviation)
*2
Package name (abbreviation)
MC: SOT-23-5
PN: 5-Pin SON(A)
Output voltage
15 to 60
(e.g. When the output voltage is 1.5 V, it is
expressed as 15.)
Product type
*3
A: ON/OFF pin positive logic
B: ON/OFF pin negative logic
*1.
Refer to the taping specifications.
*2.
Refer to the “2.
Product Name List”.
*3.
Refer to the “3.
Shutdown Pin (ON/OFF Pin)”
in the “
Operation”.
Seiko Instruments Inc.
3
Rev.2.3
_01
HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR
S-L2980 Series
Pin Configurations
SOT-23-5
Top view
5
4
Table 2
Pin No.
Symbol
Pin Description
1
VIN
Input voltage pin
2
VSS
GND pin
3
ON/OFF
Shutdown pin
*1
4
NC
No connection
5
VOUT
Output voltage pin
*1.
The NC pin is electrically open.
The NC pin can be connected to VIN or VSS.
1
2
3
Figure 2
5-Pin SON(A)
Top view
5
4
Table 3
Pin No.
Symbol
Pin Description
*1
1
NC
No connection
2
VSS
GND pin
3
ON/OFF
Shutdown pin
4
VIN
Input voltage pin
5
VOUT
Output voltage pin
*1.
The NC pin is electrically open.
The NC pin can be connected to VIN or VSS.
1
2
3
Figure 3
Absolute Maximum Ratings
Table 4
(Ta=25
°C
unless otherwise specified)
Item
Symbol
Absolute Maximum Rating
Unit
Input voltage
V
IN
V
SS
–0.3 to V
SS
+12
V
V
ON/OFF
V
SS
–0.3 to V
SS
+12
Output voltage
V
OUT
V
SS
–0.3 to V
IN
+0.3
Power dissipation
P
D
SOT-23-5
300
mW
5-Pin SON(A)
150
Operating ambient temperature
Topr
–40 to +85
°C
Storage ambient temperature
Tstg
–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.
Seiko Instruments Inc.
5
PCB设计
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