HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR
S-T111 Series
Rev.3.0_00
Seiko Instruments Inc.
6
Electrical Characteristics
Table 4
(Ta = 25°C unless otherwise specified)
Item Symbol Conditions Min. Typ. Max. Unit
Test
Circuit
Output voltage
*1
V
OUT(E)
V
IN
= V
OUT(S)
+ 1.0 V, I
OUT
= 30 mA
V
OUT(S)
× 0.99
V
OUT(S)
V
OUT(S)
× 1.01
V 1
Output current
*2
I
OUT
V
IN
≥ V
OUT(S)
+ 1.0 V
150
*5
⎯ ⎯ mA 3
Dropout voltage
*3
V
drop
I
OUT
= 50 mA 1.5 V ≤ V
OUT(S)
≤ 2.7 V Not specified V 1
2.8 V ≤ V
OUT(S)
≤ 5.5 V ⎯ 0.08 0.14 V 1
I
OUT
= 100 mA 1.5 V ≤ V
OUT(S)
≤ 1.6 V ⎯ 0.32 0.55 V 1
1.7 V ≤ V
OUT(S)
≤ 1.8 V ⎯ 0.28 0.47 V 1
1.9 V ≤ V
OUT(S)
≤ 2.3 V ⎯ 0.25 0.35 V 1
2.4 V ≤ V
OUT(S)
≤ 2.7 V ⎯ 0.20 0.29 V 1
2.8 V ≤ V
OUT(S)
≤ 5.5 V ⎯ 0.19 0.26 V 1
Line regulation
OUTIN
OUT1
VV
V
Δ
Δ
V
OUT(S)
+ 0.5 V ≤ V
IN
≤ 6.5 V,
I
OUT
= 30 mA
⎯ 0.05 0.2 % / V 1
Load regulation ΔV
OUT2
V
IN
= V
OUT(S)
+ 1.0 V,
1.0 mA ≤ I
OUT
≤ 80 mA
⎯ 12 40 mV 1
Output voltage
temperature coefficient
*4
OUT
OUT
VTa
V
•Δ
Δ
V
IN
= V
OUT(S)
+ 1.0 V, I
OUT
= 10 mA,
−40°C ≤ Ta ≤ 85°C
⎯ ±100 ⎯ ppm /°C1
Current consumption
during operation
I
SS1
V
IN
= V
OUT(S)
+ 1.0 V, ON/OFF pin = ON,
no load
⎯ 50 90 μA 2
Current consumption
during shutdown
I
SS2
V
IN
= V
OUT(S)
+ 1.0 V, ON/OFF pin = OFF,
no load
⎯ 0.1 1.0 μA 2
Input voltage V
IN
⎯ 2.0 ⎯ 6.5 V ⎯
Shutdown pin
input voltage “H”
V
SH
V
IN
= V
OUT(S)
+ 1.0 V, R
L
= 1.0 kΩ 1.5 ⎯ ⎯ V 4
Shutdown pin
input voltage “L”
V
SL
V
IN
= V
OUT(S)
+ 1.0 V, R
L
= 1.0 kΩ ⎯ ⎯ 0.3 V 4
Shutdown pin
input current “H”
I
SH
V
IN
= 6.5 V, V
ON/OFF
= 6.5 V −0.1 ⎯ 0.1 μA 4
Shutdown pin
input current “L”
I
SL
V
IN
= 6.5 V, V
ON/OFF
= 0 V −0.1 ⎯ 0.1 μA 4
Ripple rejection
RR
V
IN
= V
OUT(S)
+ 1.0 V, f = 1.0 kHz,
ΔV
rip
= 0.5 Vrms, I
OUT
= 30 mA
⎯ 80 ⎯ dB 5
Short-circuit current I
short
V
IN
= V
OUT(S)
+ 1.0 V, ON/OFF pin = ON,
V
OUT
= 0 V
⎯ 200 ⎯ mA 3
*1.
V
OUT(S)
: Specified output voltage
V
OUT(E)
: Actual output voltage at the fixed load
The output voltage when fixing I
OUT
(
=
30 mA) and inputting V
OUT(S)
+
1.0 V
*2.
The output current at which the output voltage becomes 95% of V
OUT(E)
after gradually increasing the output current.
*3.
V
drop
=
V
IN1
−
(V
OUT3
×
0.98)
V
OUT3
is the output voltage when V
IN
=
V
OUT(S)
+
1.0 V and I
OUT
=
50 mA or I
OUT
=
100 mA.
V
IN1
is the input voltage at which the output voltage becomes 98% of
V
OUT3
after gradually decreasing the input voltage.
*4.
The change in temperature [mV/°C] is calculated using the following equation.
1000]C/ppm[
VTa
V
]V[V]C/mV[
Ta
V
OUT
OUT
)S(OUT
OUT
÷°
•Δ
Δ
×=°
Δ
Δ
*3*2*1
*1.
The change in temperature of the output voltage
*2.
Specified output voltage
*3.
Output voltage temperature coefficient
*5.
The output current can be at least this value.
Due to restrictions on the package power dissipation, this value may not be satisfied. Attention should be paid to the
power dissipation of the package when the output current is large.
This specification is guaranteed by design.
