Rev.1.1
HIGH RIPPLE-REJECTION CMOS
LOW DROPOUT VOLTAGE REGULATOR
S-L2980 Series
The S-L2980 series is a low dropout voltage regulator
designed for use in battery powered devices and
developed using CMOS technology. On-chip low on-
resistance transistor can provide low dropout voltage and
large output current. A power-off switch ensures long
battery life.
Various types of output capacitors can be used in the
S-L2980 series compared with the former CMOS voltage
regulators. A small ceramic capacitor can also be used.
Features
O
O
Applications
O
O
O
O
O
O
O
O
Low dropout voltage:
O
Power source for battery-powered devices
Typically 120mV @ 50mA load for 3.0 V output
O
Power source for personal communication
Low current consumption:
devices
Typically 90
µA,
140
µA
max. at operation
O
Power source for home electric/electronic
Sleep mode: Quiescence current
appliances
Typically 0.1
µA,
1
µA
max. at power off
Output voltage: 1.5 V to 6.0 V, 0.1 V step
High accuracy output voltage:
±2.0%
High peak current capability:
Note
150 mA @ V
IN
≥
V
OUT
(S) +1 V
Ripple rejection: 70 dB typ. @1 kHz
Built-in power-off circuit:
Low ESR capacitor:
A 2.2
µF
ceramic capacitor can be used as the output capacitor.
Ultra compact package: SOT-23-5, 5-Pin SON(A)
Note: Attention should be paid to power dissipation of the package when the load is large.
Package
SOT-23-5
5-Pin SON(A)
(Package drawing code, MP005-A)
(Package drawing code, PN005-A)
Block Diagram
*
VIN
VOUT
ON/OFF
ON/OFF
circuit
Reference
voltage
VSS
*
Parastic diode
Figure 1 Block Diagram
Seiko Instruments Inc.
1
HIGH RIPPLE-REJECTION LOW DRPOUT CMOS VOLTAGE REGULATOR
S-L2980 Series
Selection Guide
Product Name
S-L2980xxxxx - xxxTF
Rev.1.1
IC direction in tape specifications
Product code
Package code
MC: SOT-23-5
PN: 5-Pin SON(A)
Output voltage x 10
15 to 60 (1.5V to 6.0V)
Logic type
A: ON/OFF pin positive logic
B: ON/OFF pin negative logic
Product List
Output Voltage
5-Pin SON(A)
1.5 V ± 2.0%
S-L2980A15PN-C6ATF
1.7 V ± 2.0%
S-L2980A17PN-C6CTF
1.8 V ± 2.0%
S-L2980A18PN-C6DTF
1.9 V ± 2.0%
S-L2980A19PN-C6ETF
2.5 V ± 2.0%
S-L2980A25PN-C6KTF
2.7 V ± 2.0%
S-L2980A27PN-C6MTF
2.8 V ± 2.0%
S-L2980A28PN-C6NTF
2.9 V ± 2.0%
S-L2980A29PN-C6OTF
3.0 V ± 2.0%
S-L2980A30PN-C6PTF
3.1 V ± 2.0%
3.2 V ± 2.0%
3.3 V ± 2.0%
S-L2980A33PN-C6STF
3.8 V ± 2.0%
S-L2980A38PN-C6XTF
4.0 V ± 2.0%
S-L2980A40PN-C6ZTF
4.1 V ± 2.0%
4.4 V ± 2.0%
4.5 V ± 2.0%
S-L2980A45PN-C7ETF
4.8 V ± 2.0%
5.0 V ± 2.0%
S-L2980A50PN-C7JTF
Note:
Contact SII sales office for products with output voltage not specified above.
Table 1
SOT-23-5
S-L2980A17MC-C6CTF
S-L2980A18MC-C6DTF
S-L2980A25MC-C6KTF
S-L2980A27MC-C6MTF
S-L2980A28MC-C6NTF
S-L2980A30MC-C6PTF
S-L2980A31MC-C6QTF
S-L2980A32MC-C6RTF
S-L2980A33MC-C6STF
S-L2980A38MC-C6XTF
S-L2980A40MC-C6ZTF
S-L2980A41MC-C7ATF
S-L2980A44MC-C7DTF
S-L2980A48MC-C7HTF
S-L2980A50MC-C7JTF
2
Seiko Instruments Inc.
HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR
Rev.1.1
S-L2980 Series
Pin Configurations
5
4
Table 2 Pin Assignment
Pin No.
Symbol
VIN
VSS
NC
VOUT
Description
Input voltage pin
GND pin
Note
SOT-23-5
Top view
1
2
3
4
ON/OFF
Power-off pin
No connection
Output voltage pin
1
2
3
5
Figure 2
Table 3 Pin Assignment
5
5-Pin SON(A)
Top view
4
Pin No.
1
2
3
4
Symbol
NC
VSS
VIN
VOUT
Description
No connection
GND pin
Note
ON/OFF
Power-off pin
Input voltage pin
Output voltage pin
1
2
3
Note
5
Figure 3
NC pin is electrically open. NC pin can be
connected to VIN or VSS.
Absolute Maximum Ratings
Table 4 Absolute Maximum Ratings
Item
Input voltage
Output voltage
Power dissipation
Operating temperature range
Storage temperature range
Symbol
V
IN
V
ON/OFF
V
OUT
P
D
T
opr
T
stg
(Ta=25°C unless otherwise specified)
Units
V
V
V
mW
°C
°C
Absolute Maximum
Rating
V
SS
-0.3 to V
IN
+12
V
SS
-0.3 to V
IN
+12
V
SS
-0.3 to V
IN
+0.3
SOT-23-5
5-Pin SON(A)
-40 to +85
-40 to +125
250
100
Note:
Although the IC contains protection circuit against static electricity, excessive static electricity
or voltage which exceeds the limit of the protection circuit should not be applied to.
Seiko Instruments Inc.
3
HIGH RIPPLE-REJECTION LOW DRPOUT CMOS VOLTAGE REGULATOR
S-L2980 Series
Electrical Characteristics
1. S-L2980Axx, S-L2980Bxx
Table 5 Electrical Characteristics
Item
Output voltage
Output current
Dropout voltage
1)
2)
3)
Rev.1.1
(Ta=25°C unless otherwise specified)
Min.
V
OUT
(S)
×
0.98
150
5)
−
−
−
−
−
−
−
−
Typ.
V
OUT
(S)
−
0.17
0.16
0.15
0.13
0.12
0.11
0.05
12
±100
−
90
0.1
2.0
1.5
−
−
−
−
−
−
−
−
−
−
−
70
65
60
Max.
V
OUT
(S)
×
1.02
−
0.33
0.29
0.26
0.20
0.15
0.14
0.2
40
−
140
1.0
10
−
0.3
0.1
−0.1
−
−
−
Units
V
mA
V
V
V
V
V
V
%/V
mV
ppm
/°C
µA
µA
V
V
V
µA
µA
dB
dB
dB
Test
circuits
1
3
1
1
1
1
1
1
1
1
1
2
2
1
4
4
4
4
5
5
5
Symbol
Conditions
V
OUT
(E) V
IN
=V
OUT
(S)+1 V, I
OUT
=50 mA
I
OUT
Vdrop
V
IN
=V
OUT
(
S
)+
1 V
I
OUT
= 50mA
1.5V
≤
V
OUT
(S)
≤
1.7V
1.8V
≤
V
OUT
(S)
≤
1.9V
2.0V
≤
V
OUT
(S)
≤
2.4V
2.5V
≤
V
OUT
(S)
≤
2.9V
3.0V
≤
V
OUT
(S)
≤
3.2V
3.3V
≤
V
OUT
(S)
≤
6.0V
∆
V
OUT1
Line regulation
V
OUT
(S) + 0.5 V
≤
V
IN
≤
10 V,
∆
V
IN
•
V
OUT
I
OUT
= 50 mA
∆
V
OUT
2
1
V
IN
=V
OUT
(S)+1 V
Load regulation
1mA≤ I
OUT
≤
80 mA,
∆
V
OUT
4)
Output voltage
V
IN
= V
OUT
(S) + 1 V, I
OUT
= 50mA
∆
Ta
•
V
OUT
temperature coefficient
-40°C
≤
Ta
≤
85°C
Current consumption
I
SS1
V
IN
= V
OUT
(S) +1 V,
during operation
ON/OFF pin = ON , no load
Current consumption
I
SS2
V
IN
= V
OUT
(S) +1 V,
when power off
ON/OFF pin = OFF, no load
Input voltage
V
IN
Power-off pin
V
SH
V
IN
= V
OUT
(S) + 1 V, R
L
= 1kΩ,
input voltage “H”
Checked by V
OUT
level.
Power-off pin
V
SL
V
IN
= V
OUT
(S) + 1 V, R
L
= 1kΩ,
input voltage “L”
Checked by V
OUT
level.
Power off pin
I
SH
V
IN
= V
OUT
(S) + 1 V,
input current “H”
V
ON/OFF
= 7 V
Power off pin
I
SL
V
IN
= V
OUT
(S) + 1 V,
input current “L”
V
ON/OFF
= 0 V
RR
V
IN
= V
OUT
(S) + 1V 1.5 V
≤
V
OUT
(S)
≤
3.3 V
Ripple rejection
f = 1 kHz
∆Vrip=0.5
Vrms
I
OUT
=50 mA
1)
2)
3)
4)
3.4 V
≤
V
OUT
(S)
≤
5.0 V
5.1 V
≤
V
OUT
(S)
≤
6.0 V
V
OUT
(S) = Specified output voltage
V
OUT
(E) = Actual output voltage at the fixed load (I
OUT
=50 mA) and V
OUT
(S)+1.0 V input.
Output current at which output voltage becomes 95% of V
OUT
after gradually increasing output current.
Vdrop = V
IN1
−(V
OUT
× 0.98), where V
IN1
is the input voltage at which output voltage becomes 98% of V
OUT
after gradually
decreasing input voltage.
A change in temperatures [mV/°C] is calculated using the following equation.
∆
V
OUT
∆
V
OUT
[
mV/
°
C
]
=
V
OUT
(S)
[
V
]
× ∆
Ta
•
V
OUT
[
ppm/
°
C
]
÷
1000
∆
Ta
Specified output voltage
Output voltage temperature coefficient
Change in temperature of output voltage
5)
The output current can be supplied at least to this value.
4
Seiko Instruments Inc.
HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR
Rev.1.1
S-L2980 Series
Test Circuits
1
VIN
VOUT
V
A
2.
A
VIN
VOUT
ON/OFF VSS
Set to
power ON
ON/OFF VSS
Set to
V
IN
or GND
3.
VIN
VOUT
A
V
4
VIN
VOUT
V
R
L
ON/OFF VSS
Set to
power ON
A
ON
/
OFF VSS
5
VIN
VOUT
V
R
L
ON/OFF VSS
Set to
power ON
Figure 4 Test Circuits
Standard Circuit
INPUT
VIN
C
IN
ON/OFF
VSS
VOUT
C
L
OUTPUT
In addition to a tantalum capacitor, a ceramic
capacitor of 2.2
µF
or more can be used for C
L
.
C
IN
is a capacitor used to stabilize input.
Single GND
GND
Figure 5 Standard Circuit
Application Conditions
Input capacitor (C
IN
) :
Input series resistance (R
IN
) :
Output capacitor (C
L
) :
Equivalent Series Resistance (ESR) for output capacitor:
0.47µF or more
10Ω or less
2.2µF or more
10Ω or less
Seiko Instruments Inc.
5
stm32/stm8
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