S-8520D50MC-BWJ-T2 Seiko Instruments, S-8520D50MC-BWJ-T2 Datasheet - Page 6

• Manufacturer Part Number: S-8520D50MC-BWJ-T2
• Description: DC/DC Switching Regulators 5.0V Step-Down PWM
• Manufacturer: Seiko Instruments

Specifications of S-8520D50MC-BWJ-T2

• Output Voltage: 5 V
• Mounting Style: SMD/SMT
• Package / Case: SOT-23-5
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

PWM Control & PWM/PFM Control Step-Down Switching Regulator-Controllers
S-8520/8521 Series
Current consumption during
6
Output voltage temperature
Overload detection time
PWM/PFM-control switch
Conditions:
Notes:
2. S-8520/21 C & D Series
Current consumption 1
EXT pin output current
Oscillation frequency
input leakage current
Output voltage
Load regulation
Line regulation
Soft-Start time
Power-Off pin
Power-Off pin
The recommended components are connected to the IC, unless otherwise indicated. V
I
Peripheral components:
The output voltage indicated above represents a typical output voltage set up. These specifications apply in
common to both S-8520 and S-8521, unless otherwise noted.
*1. V
*2. Applicable to the S-8521C Series and S-8521D Series.
*3. Applicable to the S-8520C Series and S-8521C Series.
*4. V
Input voltage
input voltage
The power-off pin is connected to VIN.
duty ratio
OUT
Parameter
coefficient
Efficiency
power-off
V
= 120 [mA] (V
OUT
OUT
IN
= 2.5 V to 2.94 V, if V
(E) Actual output voltage value.
(S) Specified output voltage value.
Coil
Diode
Capacitor
Transistor
Base resistance (R
Base capacitor (C
*2
*1
*3
IN
= 2.5 V, if V
Symbol
V
∆V
∆V
∆V
OUT
I
PFM
T
EFFI
I
/∆Ta
Duty
fosc
I
I
EXTH
V
T
EXTL
V
V
I
I
SS1
SSS
PRO
OUT1
OUT2
SH
SL
SH
SS
OUT
SL
IN
(E)
b
)
b
Measure waveform
V
V
V
V
V
Load current =10 µA to I
×1.25
Ta = − 40 °C to 85 °C
at EXT pin
Measure waveform at EXT pin under no
load.
Evaluate oscillation at EXT pin
Evaluate oscillation stop at EXT pin
Duration from the time V
to 0 V to the time the EXT pin obtains
V
)
OUT
OUT
ON/OFF
EXT
EXT
IN
IN
.
OUT
= V
(S) ≤2.0 V.
= V
= 0.4 V
Seiko Instruments Inc.
= V
OUT
(S) ≤2.0 V.)
= 0 V
OUT
IN
−0.4 V
: Sumida Electric Co., Ltd. CD54 (47 µH).
: Matsushita Electronics Corporation MA720 (Schottky type).
: Matsushita Electronics Corporation TE (16 V, 22 µF tantalum type).
: Toshiba Corporation 2SA1213Y.
: 0.68 kΩ
: 2200 pF (Ceramic type)
(S) ×1.2 to ×1.4
(S) × 1.2
Conditions
−
−
−
−
−
S-8520/21C Series
S-8520/21D Series
S-8520/21X15 − 24
S-8520/21X25 − 34
S-8520/21X35 − 44
S-8520/21X45 − 54
S-8520/21X55 − 60
S-8520/21X15 − 24
S-8520/21X25 − 34
S-8520/21X35 − 44
S-8520/21X45 − 54
S-8520/21X55 − 60
V
V
OUT
OUT
OUT
OUT
(S) ≥ 2.5 V
(S) ≤ 2.4 V
*4
(See below)
is reduced
V
× 0.976
+12.6
+15.0
OUT
Min.
−2.3
−3.7
−5.3
−6.7
−8.0
+4.3
+7.0
+9.9
−0.1
−0.1
2.5
2.5
1.8
6.0
7.0
48
45
15
−
−
−
−
−
−
−
(S)
± V
(Ta = 25
V
× 5E-5
−11.3
−13.3
+13.2
+17.5
+21.4
+25.1
OUT
Typ.
−4.5
−7.0
−9.3
+8.4
12.0
14.0
OUT
10
30
30
60
60
25
93
−
−
−
−
−
−
−
(S) V
(S)
°
× 1.024
C unless otherwise specified)
Max.
OUT
10.0
16.0
24.0
28.0
0.5
0.3
0.1
0.1
21
60
60
72
75
40
−
−
−
−
−
−
−
−
−
−
−
−
−
(S)
IN
= V
Units
V/°C
kHz
mA
mV
mV
ms
ms
µA
µA
µA
µA
%
%
V
V
V
OUT
Rev.7.4
× 1.2 [V],
Measuremen
t Circuit
3
2
2
2
−
3
3
3
3
3
2
1
1
3
2
3
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