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參數(shù)資料
| 型號(hào)： | LM2937ES-10 |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類(lèi)： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | Cap-Free, NMOS, 150mA Low Dropout Regulator with Reverse Current Protection |
| 中文描述： | 10 V FIXED POSITIVE LDO REGULATOR, 1 V DROPOUT, PSSO3 |
| 封裝： | PLASTIC, TO-263, 3 PIN |
| 文件頁(yè)數(shù)： | 3/11頁(yè) |
| 文件大?。?/td> | 300K |
| 代理商： | LM2937ES-10 |
Absolute Maximum Ratings
(Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Input Voltage
Continuous
Transient (t
≤
100 ms)
Internal Power Dissipation (Note 2)
Maximum Junction Temperature
Storage Temperature Range
Lead Temperature Soldering
TO-220 (10 seconds)
26V
60V
Internally Limited
150C
65C to +150C
260C
TO-263 (10 seconds)
SOT-223 (Vapor Phase, 60 seconds)
SOT-223 (Infrared, 15 seconds)
ESD Susceptibility (Note 3)
230C
215C
220C
2 kV
Operating Conditions
(Note 1)
Temperature Range (Note 2)
LM2937ES, LM2937ET
40C
≤
T
A
≤
125C
LM2937IMP
40C
≤
T
A
≤
85C
4.75V to 26V
Input Voltage Range
Electrical Characteristics
(Note 4)
V
= V
+ 5V, I
= 500 mA for the TO-220 and TO-263 packages, I
=400mA for the SOT-223 package, C
= 10 μF unless otherwise indicated.
Boldface limits apply over the entire operating temperature range, of the indicated
device
, all other specifications are for T
A
= T
J
= 25C.
Output Voltage (V
OUT
)
Parameter
Conditions
Output Voltage
5 mA
≤
I
OUT
≤
I
OUTmax
2.5V
3.3V
Units
Typ
Limit
2.42
2.38
2.56
2.62
25
Typ
Limit
3.20
3.14
3.40
3.46
33
V (Min)
V(Max)
V(Max)
mV(Max)
2.5
3.3
Line Regulation(Note 5)
4.75V
≤
V
IN
≤
26V,
I
OUT
= 5 mA
5 mA
≤
I
OUT
≤
I
OUTmax
7V
≤
V
IN
≤
26V,
I
OUT
= 5 mA
V
IN
= (V
OUT
+ 5V),
I
OUT
= I
OUTmax
V
IN
= 5V, I
OUT
= I
OUTmax
10 Hz–100 kHz,
I
OUT
= 5 mA
1000 Hrs.
7.5
9.9
Load Regulation
Quiescent Current
2.5
2
25
10
3.3
2
33
10
mV(Max)
mA(Max)
10
20
10
20
mA(Max)
66
75
100
125
66
99
100
125
mA(Max)
μVrms
Output Noise
Voltage
Long Term Stability
Short-Circuit Current
Peak Line Transient
Voltage
Maximum Operational
Input Voltage
Reverse DC
Input Voltage
Reverse Transient
Input Voltage
10
1.0
75
13.2
1.0
75
mV
A(Min)
V(Min)
0.6
60
0.6
60
t
f
<
100 ms, R
L
= 100
26
26
V(Min)
V
OUT
≥
0.6V, R
L
= 100
30
15
30
15
V(Min)
t
r
<
1 ms, R
L
= 100
75
50
75
50
V(Min)
Note 1:
Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Electrical specifications do not apply when operating the device
outside of its rated Operating Conditions.
Note 2:
The maximum allowable power dissipation at any ambient temperature is P
MAX
= (125 T
A
)/
θ
JA
, where 125 is the maximum junction temperature for op-
eration, T
is the ambient temperature, and
θ
is the junction-to-ambient thermal resistance. If this dissipation is exceeded, the die temperature will rise above 125C
and the electrical specifications do not apply. If the die temperature rises above 150C, the regulator will go into thermal shutdown. The junction-to-ambient thermal
resistance
θ
JA
is 65C/W, for the TO-220 package, 73C/W for the TO-263 package, and 174C/W for the SOT-223 package. When used with a heatsink,
θ
JA
is the
sum of the device junction-to-case thermal resistance
θ
of 3C/W and the heatsink case-to-ambient thermal resistance. If the TO-263 or SOT-223 packages are
used, the thermal resistance can be reduced by increasing the P.C. board copper area thermally connected to the package (seeApplication Hints for more information
on heatsinking).
Note 3:
ESD rating is based on the human body model, 100 pF discharged through 1.5 k
.
Note 4:
Typicals are at T
J
= 25C and represent the most likely parametric norm.
Note 5:
The minimum input voltage required for proper biasing of these regulators is 4.75V. Below this level the outputs will fall out of regulation. This effect is not
the normal dropout characteristic where the output falls out of regulation due to the PNP pass transistor entering saturation. If a value for worst case effective input
to output dropout voltage is required in a specification, the values should be 2.37V maximum for the LM2937-2.5 and 1.6V maximum for the LM2937-3.3.
3
www.national.com
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|---|---|
| LM2937ES-10/NOPB | 功能描述:低壓差穩(wěn)壓器 - LDO RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動(dòng)電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類(lèi)型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| LM2937ES-10/NOPB | 制造商:Texas Instruments 功能描述:Linear Voltage Regulator IC |
| LM2937ES-12 | 功能描述:低壓差穩(wěn)壓器 - LDO RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動(dòng)電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類(lèi)型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| LM2937ES-12/NOPB | 功能描述:低壓差穩(wěn)壓器 - LDO 500 MA LDO REG RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動(dòng)電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類(lèi)型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| LM2937ES-12/NOPB | 制造商:Texas Instruments 功能描述:Linear Voltage Regulator IC |
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