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SC2982CSK-3.0TR PDF даташит

Спецификация SC2982CSK-3.0TR изготовлена ​​​​«Semtech Corporation» и имеет функцию, называемую «50mA Ultra Low Dropout/ Low Noise Micropower Linear Regulator».

Детали детали

Номер произв SC2982CSK-3.0TR
Описание 50mA Ultra Low Dropout/ Low Noise Micropower Linear Regulator
Производители Semtech Corporation
логотип Semtech Corporation логотип 

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SC2982CSK-3.0TR Даташит, Описание, Даташиты
POWER MANAGEMENT
Description
SC2982
50mA Ultra Low Dropout, Low
Noise Micropower Linear Regulator
PRELIMINARY
Features
The SC2982 is a 50mA ultra low dropout linear
regulator with a built in CMOS/TTL logic level enable
switch. It is designed specifically for battery powered
applications where low quiescent current and low
dropout are critical for battery longevity.
The SC2982 uses a Semtech proprietary internal PNP
device for the pass element, providing a low dropout
voltage of 100mV at a load of 50mA, while maintaining a
ground pin current of 600µA.
u Ultra low dropout voltage - 100mV @ 50mA
u Guaranteed 50mA output current
u Low ground pin current at all loads
u <1µA quiescent current in shutdown
u Wide input supply voltage range 2.5V to 16V
u Wide output voltage range
u Excellent line regulation
u Industrial temperature range
u Surface mount packaging (5 pin SOT-23)
The output noise is reduced by placing a 10nF capacitor
on pin 4 (bypass).
Each device contains a bandgap reference, error
amplifier, PNP pass element, thermal and current
limiting circuitry and resistor divider network for setting
output voltage.
The SC2982 is packaged in a 5 pin SOT-23 surface mount
package for a very small footprint and requires only a
1µF capacitor on the output for a minimum number of
external components.
Applications
u Battery Powered Systems
u Cellular Telephones
u Cordless Telephones
u Pagers
u Personal Digital Assistants
u Portable Instrumentation
u Cameras
u Portable Consumer Equipment
u PCMCIA Cards
Typical Application Circuit
VIN
EN
+ CIN
1uF
U1 SC2982
1
VIN
5
VO
2 GND
3 EN
BYP 4
VO
CBYP
10nF
+ Co
1uF
Notes:
(1) CIN is needed if the device is far from the supply’s filter capacitors, or for operation from a battery. A value of 1µF
or greater should be used. CIN may be a tantalum or aluminum electrolytic capacitor.
(2) CO should be a 1µF or greater tantalum or aluminum electrolytic capacitor. Larger value capacitors will improve
the overall transient response. Due to their very low ESR, ceramic capacitors should not be used.
(3) CBYP should be placed as close as possible to pin 4 and ground. A 10nF ceramic capacitor is recommended.
(4) EN should be tied to VIN if the shutdown feature is not required. Maximum EN voltage = VIN.
Revision 1, January 2001
1
www.semtech.com









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SC2982CSK-3.0TR Даташит, Описание, Даташиты
SC2982
POWER MANAGEMENT
Absolute Maximum Ratings
PRELIMINARY
Parameter
Symbol
Maximum
Units
Input Supply Voltage
VIN -0.3 to +20 V
Power Dissipation
Thermal Resistance Junction to Ambient
Thermal Resistance Junction to Case
Operating Ambient Temperature Range
Operating Junction Temperature Range
Storage Temperature Range
Lead Temperature (Soldering) 10 Sec
ESD Rating (Human Body Model)
PD
qJA
qJC
TA
TJ
TSTG
TLEAD
VESD
Internally Limited
256
81
-40 to +85
-40 to +125
-65 to +150
300
2
W
°C/W
°C/W
°C
°C
°C
°C
kV
Electrical Characteristics
Unless specified: VIN = VO(NOM) + 1V, IO = 100µA, CO = 1µF, VEN ³ 1.8V. Values in bold apply over the full operating temperature range.
Parameter
Symbol
Test Conditions
Min Typ Max Units
Supply Voltage Range
VIN
2.5 16 V
Output Voltage
VO
-1 +1 %
-3 +3
Output Voltage Temperature
Coefficient
TC
40 ppm/°C
Line Regulation
REG(LINE)
VIN = (VO(NOM) + 1V) to 16V
0.06 0.12
0.15
%/V
Load Regulation
REG(LOAD)
IO = 0.1mA to 50mA
0.001 0.004 %/mA
0.007
Dropout Voltage(1)
VD
IO = 100µA
5 10 mV
25
IO = 50mA
100 150
200
mV
Ground Pin Current
IGND
IO = 100µA
80 125
150
µA
IO = 50mA
600 1000
1500
µA
VEN < 0.4V (shutdown)
0.01 5
µA
ã 2001 Semtech Corp.
2
www.semtech.com









No Preview Available !

SC2982CSK-3.0TR Даташит, Описание, Даташиты
SC2982
POWER MANAGEMENT
PRELIMINARY
Electrical Characteristics
Unless specified: VIN = VO(NOM) + 1V, IO = 100µA, CO = 1µF, VEN ³ 1.8V. Values in bold apply over the full operating temperature range.
Parameter
Symbol
Test Conditions
Min Typ Max Units
Current Limit(2)
Ripple Rejection Ratio
Thermal Regulation
RMS Output Noise
Enable Input Voltage
Enable Input Current
ILIM
PSRR
VO (%)
PD
eno
VEN
IEN
VO > (VO(NOM) - 5%)
IO = 100µA, f = 100Hz, CBYP = 10nF,
CO = 10µF
BW = 300Hz to 50kHz, IO = 1mA,
CBYP = 10nF, CO = 10µF
Low = O/P OFF
High = O/P ON
VEN £ 0.4V
VEN ³ 1.8V
200
50
mA
db
0.05 %/W
30 µVrms
0.4
1.8
-0.01 -1
5 10
20
V
V
µA
µA
Notes:
(1) Defined as the input to output differential at which the output voltage drops 100mV below the value measured
at a differential of 1V.
(2) As the load resistance further decreases, the SC2982 folds back the output current to approximately 150mA at
VO = 0V.
ã 2001 Semtech Corp.
3
www.semtech.com










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Номер в каталогеОписаниеПроизводители
SC2982CSK-3.0TR50mA Ultra Low Dropout/ Low Noise Micropower Linear RegulatorSemtech Corporation
Semtech Corporation

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