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參數(shù)資料
| 型號： | IMP37-30JCM |
| 廠商： | IMP INC. |
| 英文描述： | Low Dropout Positiv Voltage Regulators |
| 中文描述： | 低壓差電壓調(diào)節(jié)Positiv |
| 文件頁數(shù)： | 1/6頁 |
| 文件大?。?/td> | 270K |
| 代理商： | IMP37-30JCM |
1999 IMP, Inc.
408-432-9100/www.impweb.com
1
Key Features
Applications
N
High-efficiency linear power supplies
N
Post regulator for switching supplies
N
5V to 3.3V linear regulators
N
USB hubs
N
Battery chargers
N
Routers, ISDN/DSL modems
N
Low Dropout Voltage
– 0.8V maximum at 100mA
– 0.95V maximum at 800mA
– 20% lower dropout voltage than “1117”
LDO regulators
N
Guaranteed Low Dropout Voltage at Multiple
Current Levels
N
1% Trimmed 2.5V, 3.0V and 3.3V Outputs
N
Reduced Quiescent Current: 75μA Maximum
N
Short Circuit and Thermal Protection
N
Space Saving SOT-223 Surface Mount Package
N
“1117” Pin Compatible
Block Diagram
–
+
+
–
37_01.eps
GND
1
Ref
IMP37
Thermal
Protection
Error
Amp
Current
Limit
2
Input
3
Out
(Tab)
R
CS
+
–
IMP3
7
7
P
OWER
M
ANAGEMENT
Lo
w Dr
opout P
V
V
olt
ag
e R
egulat
– 800mA
– 2.5V
, 3.0V and 3.3V Output
ositiv
e
e
or
s
s
The IMP37 series of Low Dropout (LDO) three-terminal voltage regula-
tors feature guaranteed low dropout voltages at currents up to 0.8A. The
lower at 0.8A. At 100mA, the maximum dropout voltage is 0.8V.
Compared with “1117” type LDOs, the IMP37 has a 20% lower dropout
voltage.
Three fixed output voltages are offered: 2.5V, 3.0V and 3.3V. Output volt-
ages are factory trimmed to within 1% of the nominal value.
In addition to low dropout voltages, the IMP37 family features greatly
reduced quiescent operating current. The 75
μ
A maximum specification
represents an over 100 times improvement over competitive devices.
Devices are short circuit protected, and a thermal protection circuit shuts
the regulator off should the junction temperature exceed 165°C.
The IMP37 is available in low-profile plastic SOT-223 and TO-263
packages and are pin compatible with fixed “1117” devices.
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| IMP37-33JST | 制造商:IMP 制造商全稱:IMP 功能描述:Low Dropout Positiv Voltage Regulators |
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