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参数资料
型号： S-8521C25MC-BTKT2G
元件分类： 稳压器
英文描述： 0.05 A SWITCHING CONTROLLER, 72 kHz SWITCHING FREQ-MAX, PDSO5
封装： LEAD FREE, SOT-23, 5 PIN
文件页数： 2/44页
文件大小： 511K
代理商： S-8521C25MC-BTKT2G
STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER
S-8520/8521 Series
Rev.9.0_00
Seiko Instruments Inc.
10
2.
C type, D type
Table 6
(Ta =
+25°C unless otherwise specified)
Item
Symbol
Conditions
Min.
Typ.
Max.
Unit
Test
Circuit
Output voltage
*1
VOUT(E)
VOUT(S)
× 0.976
VOUT(S)
× 1.024
V
3
C type
2.5
10.0
V
2
Input voltage
VIN
D type
2.5
16.0
V
2
Current consumption 1
ISS1
VOUT = VOUT(S) × 1.2
10
21
μA
2
Current consumption
during shutdown
ISSS
VON/OFF
______
= 0 V
0.5
μA
2
S-8520/8521x15 to 24
2.3
4.5
mA
S-8520/8521x25 to 34
3.7
7.0
mA
S-8520/8521x35 to 44
5.3
9.3
mA
S-8520/8521x45 to 54
6.7
11.3
mA
IEXTH
VEXT = VIN 0.4 V
S-8520/8521x55 to 60
8.0
13.3
mA
S-8520/8521x15 to 24
+4.3
+8.4
mA
S-8520/8521x25 to 34
+7.0
+13.2
mA
S-8520/8521x35 to 44
+9.9
+17.5
mA
S-8520/8521x45 to 54
+12.6
+21.4
mA
EXT pin output current
IEXTL
VEXT = 0.4 V
S-8520/8521x55 to 60
+15.0
+25.1
mA
VOUT(S) ≤ 2.0 V
VIN = 2.5 V to 2.94 V
30
60
mV
3
Line regulation
ΔV
OUT1
VOUT(S) > 2.0 V
VIN = VOUT(S) × 1.2 to 1.4
30
60
mV
3
Load regulation
ΔV
OUT2
Load current = 10
μA to I
OUT × 1.25
30
60
mV
3
Output voltage
temperature coefficient
ΔV
OUT
ΔTa
Ta =
40°C to +85°C
±V
OUT(S)
× 5E 5
V/°C
3
VOUT(S) ≤ 2.4 V
45
60
75
kHz
3
Oscillation frequency
fosc
Measure waveform at
EXT pin.
VOUT(S) ≥ 2.5 V
48
60
72
kHz
3
PWM / PFM control
switching duty ratio
(S-8521 Series)
PFMDuty No load, measured waveform at EXT pin.
15
25
40
%
3
VSH
Determine oscillation at EXT pin
1.8
V
2
ON/OFF
______
pin
input voltage
VSL
Determine oscillation stop at EXT pin
0.3
V
2
ISH
0.1
0.1
μA
1
ON/OFF
______
pin
input leakage current
ISL
0.1
0.1
μA
1
Soft start time
tss
6.0
12.0
24.0
ms
3
Overload detection time
(C type)
tpro
Time until the EXT pin reaches VIN after
dropping VOUT to 0 V.
7.0
14.0
28.0
ms
2
Efficiency
EFFI
93
%
3
External parts
Coil:
Sumida Corporation
CD54 (47
μH)
Diode:
Matsushita Electric Industrial Co., Ltd.
MA720 (Shottky type)
Capacitor:
Matsushita Electric Industrial Co., Ltd.
TE (16 V, 22
μF tantalum type)
Transistor:
Toshiba Corporation
2SA1213
Base resistance (Rb):
0.68 k
Ω
Base capacitor (Cb):
2200 pF (Ceramic type)
Unless otherwise indicated, connect the recommended components to the IC. When VIN = VOUT(S) × 1.2 V (VIN = 2.5 V
when VOUT(S) ≤ 2.0 V), IOUT = 120 mA, connect the ON/OFF
______
pin to the VIN pin.
*1.
VOUT(S): Specified output voltage value, VOUT(E): Actual output voltage value
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相关代理商/技术参数
参数描述
S-8521C25MC-BXK-T2 制造商:SII 制造商全称:Seiko Instruments Inc 功能描述:PWM CONTROL & PWM/PFM CONTROL STEP-DOWN SWITCHING REGULATOR-CONTROLLERS
S-8521C27MC-BTM-T2 功能描述:DC/DC 开关控制器 2.7V Step-Dn PWM/PFM RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK
S-8521C27MC-BTMT2G 功能描述:DC/DC 开关控制器 2.7V Step-Dn PWM/PFM RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK
S-8521C27MC-BXM-T2 制造商:SII 制造商全称:Seiko Instruments Inc 功能描述:PWM CONTROL & PWM/PFM CONTROL STEP-DOWN SWITCHING REGULATOR-CONTROLLERS
S-8521C28MC-BTN-T2 功能描述:DC/DC 开关控制器 2.8V Step-Dn PWM/PFM RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK
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