S-8521F25MC-BPKT2G Seiko Instruments, S-8521F25MC-BPKT2G Datasheet - Page 11

• Manufacturer Part Number: S-8521F25MC-BPKT2G
• Description: IC REG PWM/PFM 300KHZ SOT23-5
• Manufacturer: Seiko Instruments
• Type: Step-Down (Buck)r

Specifications of S-8521F25MC-BPKT2G

• Internal Switch(s): No
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 2.5V
• Current - Output: 120mA
• Frequency - Switching: 300kHz
• Voltage - Input: 2.5 ~ 16 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: SOT-23-5, SC-74A, SOT-25
• Power - Output: 250mW
• Output Voltage: 2.5 V
• Input Voltage: 2.5 V to 16 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Output voltage
Input voltage
Current consumption 1
Current consumption
during shutdown
EXT pin output current
Line regulation
Load regulation
Output voltage
temperature coefficient
Oscillation frequency
PWM / PFM control
switching duty ratio
(S-8521 Series)
ON/OFF
ON/OFF
Soft start time
Overload detection time
(E type)
Efficiency
External parts
Unless otherwise indicated, connect the recommended components to the IC. When V
when V
*1.
input voltage
input leakage current
Rev.9.0
3. E type, F type
______
______
V
OUT(S)
OUT(S)
STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER
pin
pin
Item
_00
: Specified output voltage value, V
≤ 2.0 V), I
*1
Coil:
Diode:
Capacitor:
Transistor:
Base resistance (R
Base capacitor (C
OUT
f
V
V
I
I
I
I
ΔV
ΔV
PFMDuty No load, measure waveform at EXT pin.
V
V
I
I
t
t
EFFI
= 120 mA, connect the ON/OFF
SS1
SSS
EXTH
EXTL
osc
SH
SL
ss
pro
ΔV
Symbol
OUT(E)
IN
SH
SL
ΔTa
OUT1
OUT2
OUT
b
):
b
):
V
V
V
V
V
V
Load current = 10 μA to I
Ta = −40°C to +85°C
Measure waveform at
EXT pin.
Determine oscillation at EXT pin
Determine oscillation stop at EXT pin
Time until the EXT pin reaches V
dropping V
OUT
ON/OFF
EXT
EXT
OUT(S)
OUT(S)
______
Sumida Corporation CD54 (47 μH)
Matsushita Electric Industrial Co., Ltd. MA720 (Shottky type)
Matsushita Electric Industrial Co., Ltd. TE (16 V, 22 μF tantalum type)
Toshiba Corporation 2SA1213
0.68 kΩ
2200 pF (Ceramic type)
= V
= 0.4 V
= V
≤ 2.0 V
> 2.0 V
OUT(E)
−
= 0 V
IN
OUT(S)
− 0.4 V
OUT
Seiko Instruments Inc.
: Actual output voltage value
× 1.2
to 0 V.
Conditions
______
V
V
IN
IN
Table 7
E type
F type
S-8520/8521x15 to 24
S-8520/8521x25 to 34
S-8520/8521x35 to 44
S-8520/8521x45 to 54
S-8520/8521x55 to 60
S-8520/8521x15 to 24
S-8520/8521x25 to 34
S-8520/8521x35 to 44
S-8520/8521x45 to 54
S-8520/8521x55 to 60
−
−
−
−
−
= 2.5 V to 2.94 V
= V
pin to the VIN pin.
OUT(S)
OUT
V
V
× 1.25
OUT(S)
OUT(S)
× 1.2 to 1.4
≤ 2.4 V
≥ 2.5 V
IN
after
× 0.976
V
+12.6
+15.0
(Ta = +25°C unless otherwise specified)
Min.
−2.3
−3.7
−5.3
−6.7
−8.0
+4.3
+7.0
+9.9
−0.1
−0.1
OUT(S)
225
240
2.5
2.5
1.8
2.0
1.3
15
−
−
−
−
−
−
−
−
IN
× 5E − 5
±V
V
= V
−11.3
−13.3
+13.2
+17.5
+21.4
+25.1
Typ.
−4.5
−7.0
−9.3
+8.4
OUT(S)
300
300
4.5
2.6
60
30
30
30
OUT(S)
25
90
−
−
−
−
−
−
−
S-8520/8521 Series
OUT(S)
× 1.024
V
× 1.2 V (V
Max.
10.0
16.0
OUT(S)
100
375
360
0.5
0.3
0.1
0.1
9.2
4.5
60
60
60
40
−
−
−
−
−
−
−
−
−
−
−
−
−
V/°C
Unit
kHz
kHz
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mV
mV
mV
μA
μA
μA
μA
ms
ms
%
%
V
V
V
V
V
IN
= 2.5 V
Circuit
Test
3
2
2
2
2
−
−
−
−
−
−
−
−
−
−
3
3
3
3
3
3
3
2
2
1
1
3
2
3
11