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参数资料
| 型号： | ST2L05R2825K5 |
| 厂商： | 意法半导体 |
| 英文描述： | VERY LOW QUIESCENT CURRENT DUAL VOLTAGE REGULATOR |
| 中文描述： | 极低的静态电流双电压调节器 |
| 文件页数： | 4/24页 |
| 文件大小： | 635K |
| 代理商： | ST2L05R2825K5 |
ST2L05
12/24
ELECTRICAL CHARACTERISTICS OF ADJUSTABLE OUTPUT (IO = 10mA to 1A, TJ = 0 to 125°C,
VI =4.5V to7V, CI = 4.7F, CO1 =CO2 =4.7F, otherwise specified)
NOTE 1: Bandwidth of 10 Hz to 10KHz.
NOTE 2: 120Hz input ripple.
NOTE 3: CI = 20F, C1 and CO2 = 10F. CI,CO1 and CO2 are all X7R ceramic capacitors.
NOTE 4: Guaranteed by design, not tested in production.
NOTE 5: % undershoot or overshoot of VO.
APPLICATION HINTS
EXTERNAL CAPACITORS
Like any low-dropout regulator, the ST2L05 requires external capacitors for stability. We suggest
soldering both capacitors as close as possible to the relative pins (1, 4 and 5).
INPUT CAPACITOR
An input capacitor, whose value is, at least, 2.2F is required; the amount of the input capacitance can be
increased without limit if a good quality tantalum or aluminium capacitor is used.SMD X7R or Y5V ceramic
multilayer capacitors could not ensure stability in any condition because of their variable characteristics
with Frequency and Temperature; the use of this capacitor is strictly related to the use of the output
capacitors. For more details read the “OUTPUT CAPACITOR SECTION”.The input capacitor must be
located at a distance of not more than 0.5" from the input pin of the device and returned to a clean analog
ground.
OUTPUT CAPACITOR
The ST2L05 is designed specifically to work with Ceramic and Tantalum capacitors.Special care must be
taken when a Ceramic multilayer capacitor is used.Due to their characteristics they can sometimes have
an ESR value lower than the minimum required by the ST2L05 and their relatively large capacitance can
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
VO
Reference Voltage
IO = 5mA to 1A, VI = 4.75 to 5.25V,
T = 25°C
1.225
1.25
1.275
V
VO
Reference Voltage
IO = 5mA to 1A, VI = 4.75 to 5.25V
1.212
1.25
1.287
V
O2
Line Regulation 2
VI = 4.75 to 5.25V, IO = 5mA to 1A
0.35
%
V
O2
Load Regulation 2
VI = 4.75V, IO = 10mA to 1A
0.4
%
VD
Dropout Voltage
V
O = -1%
IO = 1A
1.3
V
IS
Current Limit
VI = 5.5V
1
A
IADJ
Adjustable Current (sinking)
1
A
IADJ
Adjustable Current Change
IO = 10mA to 1A
200
nA
IOMIN
Min Output Current for
regulation
2mA
eN
RMS Output Noise (1)(4)
T = 25°C
0.003
%
SVR
Supply Voltage
Rejection (2)(4)
VI =5V
60
dB
V
O2/IO2 Transient Response
Change of VO1 with step
load change(3)(4)
VI =5V, IO = 1mA to 1A, tr ≥ 1s
10(5)
%
VI =5V, IO =1Ato 1mA, tf ≥ 1s
10(5)
V
O2/VI
Transient Response
Change of VOUT1 with
application of VI
(3)(4)
0 to 5V step input, IO= 1mA to 1A,
tr ≥ 1s
10(5)
%
V
O2/IO2 Transient Response Short
Circuit Removal
Response (3)(4)
VI =5V, IO = short to IO = 10mA
20(5)
%
TR
Thermal Regulation (4)
IO = 1A, tPULSE = 30ms
0.1
%/W
S
Temperature Stability (4)
0.5
%
S
Long Term Stability (4)
(1000Hrs)
TJ = 125°C
0.3
%
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相关代理商/技术参数 |
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| ST2L05R2825PS | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:VERY LOW QUIESCENT CURRENT DUAL VOLTAGE REGULATOR |
| ST2L05R2825PT | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:VERY LOW QUIESCENT CURRENT DUAL VOLTAGE REGULATOR |
| ST2L05R2828K5 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:VERY LOW QUIESCENT CURRENT DUAL VOLTAGE REGULATOR |
| ST2L05R2828PS | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:VERY LOW QUIESCENT CURRENT DUAL VOLTAGE REGULATOR |
| ST2L05R2828PT | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:VERY LOW QUIESCENT CURRENT DUAL VOLTAGE REGULATOR |
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