SC5205-3.6CSK [SEMTECH]
Fixed Positive LDO Regulator, 3.6V, 0.3V Dropout, CMOS, PDSO5, SOT-23, 5 PIN;型号: | SC5205-3.6CSK |
厂家: | SEMTECH CORPORATION |
描述: | Fixed Positive LDO Regulator, 3.6V, 0.3V Dropout, CMOS, PDSO5, SOT-23, 5 PIN 光电二极管 输出元件 调节器 |
文件: | 总5页 (文件大小:54K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
150mA ULTRA LOW DROPOUT, LOW
NOISE MICROPOWER LINEAR REGULATOR
SC5205
PRELIMINARY - February 7, 2000
TEL:805-498-2111 FAX:805-498-3804 WEB:http://www.semtech.com
DESCRIPTION
FEATURES
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•
•
•
•
•
•
•
Ultra low dropout voltage - 165mV @ 150mA
Guaranteed 150mA output current
Low ground pin current at all loads
<1µA quiescent current in shutdown
Wide supply voltage range 2.5V to 16V in
Wide output voltage range
The SC5205 is a 150mA ultra low dropout linear
regulator with a built in CMOS/TTL logic level enable
switch, designed specifically for battery powered
applications where low quiescent current and low
dropout are critical for battery longevity.
Excellent line regulation
Surface mount packaging (5 pin SOT-23)
The SC5205 uses a Semtech proprietary internal
PNP device for the pass element, providing a low
dropout voltage of 165mV at a load of 150mA, while
maintaining a ground pin current of 2750µA.
APPLICATIONS
The output noise is reduced by placing a 10nF
capacitor on pin 4 (bypass).
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•
•
•
•
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Battery Powered Systems
Cellular Telephones
Cordless Telephones
Pagers, Personal Digital Assistants
Portable Instrumentation
Each device contains a bandgap reference, error
amplifier, PNP pass element, thermal and current
limiting circuitry and resistor divider network for setting
output voltage.
Cameras, Portable Consumer Equipment
PCMCIA VCC & VPP Regulation/Switching
The SC5205 is packaged in a 5 pin SOT-23 surface
mount package for a very small footprint and it
requires only a 1µF capacitor on the output for a
minimum amount of external components.
ORDERING INFORMATION
DEVICE
SC5205-X.XCSK(1)(2)
PACKAGE
5 pin SOT-23
Notes:
(1) Where -X.X denotes voltage options. Available volt-
ages are: 1.8V, 2.5V, 2.8V, 3.0V, 3.3V, 3.6V, 3.8V,
4.0V and 5.0V.
(2) Add suffix ‘TR’ for tape and reel.
TYPICAL APPLICATION CIRCUIT
U1 SC5205
1
5
4
VIN
VO
VIN
EN
VO
2
3
GND
EN
BYP
C1
1uF
C3
1uF
+
+
C2
10nF
1
© 2000 SEMTECH CORP.
652 MITCHELL ROAD NEWBURY PARK CA 91320
150mA ULTRA LOW DROPOUT, LOW
NOISE MICROPOWER LINEAR REGULATOR
SC5205
PRELIMINARY - February 7, 2000
ABSOLUTE MAXIMUM RATINGS
Parameter
Symbol
VIN
Maximum
-0.3 to +20
Units
V
Input Supply Voltage
Power Dissipation
PD
Internally Limited
W
Thermal Resistance
256
°C/W
°C
θ
JA
Operating Ambient
Temperature Range
TA
TJ
-40 to +85
Operating Junction
Temperature Range
-40 to +125
°C
°C
°C
kV
Storage Temperature Range
TSTG
TLEAD
ESD
-65 to +150
Lead Temperature
(Soldering) 10 Sec
260
2
ESD Rating (Human Body Model)
ELECTRICAL CHARACTERISTICS
Unless specified: VIN = VO(NOM) + 1V, IO = 100µA, CO = 1µF, VENABLE ≥ 1.8V. Values in bold apply over the full operating temperature range.
Parameter
Symbol
VIN
Test Conditions
Min
2.5
-1
Typ
Max
16
1
Units
V
Supply Voltage Range
Output Voltage
VO
%
-3
3
∆VO
∆T
Output Voltage
Temperature Coefficient
40
ppm/°C
%/V
Line Regulation
Load Regulation
Dropout Voltage(1)
REG(LINE)
REG(LOAD)
VD
VIN = (VO(NOM) + 1V) to 16V
IO = 0.1mA to 150mA
IO = 100µA
0.06 0.12
0.15
0.001 0.004 %/mA
0.007
5
10
mV
mV
mV
mV
25
IO = 50mA
100
140
165
150
200
200
250
250
300
IO = 100mA
IO = 150mA
2
© 2000 SEMTECH CORP.
652 MITCHELL ROAD NEWBURY PARK CA 91320
150mA ULTRA LOW DROPOUT, LOW
NOISE MICROPOWER LINEAR REGULATOR
SC5205
PRELIMINARY - February 7, 2000
ELECTRICAL CHARACTERISTICS
Unless specified: VIN = VO(NOM) + 1V, IO = 100µA, CO = 1µF, VENABLE ≥ 1.8V. Values in bold apply over the full operating temperature range.
Parameter
Symbol
Test Conditions
Min
Typ
Max
125
150
Units
Ground Pin Current
IGND
IO = 100µA
80
µA
IO = 50mA
IO = 100mA
IO = 150mA
600 1000
1500
µA
µA
µA
1600 2100
2600
2750 3300
4000
VEN < 0.4V (shutdown)
VO > VO(NOM) - 5%
0.01
300
50
µA
mA
dB
5
Current Limit(2)
ILIM
500
Ripple Rejection Ratio
Thermal Regulation
PSRR
IO = 100µA, f = 100Hz
∆VO
0.05
%/W
PD
nV
Hz
RMS Output Noise
en
IL = 50mA, CBYP = 10nF, CO = 2.2µF,
BW = 10Hz to 99kHz
210
Enable Input Voltage
VEN
Low = O/P OFF
High = O/P ON
V
V
0.4
1.8
Enable Input Current
IEN
-0.01
5
µA
µA
-1
10
20
V
EN ≤ 0.4V
EN ≥ 1.8V
V
NOTES:
(1) Defined as the input to output differential at which the output voltage drops to 2% below the value measured at
a differential of 1V.
(2) As the load resistance further decreases, the SC5205 folds back the output current to approximately 150mA at
VO = 0V.
3
© 2000 SEMTECH CORP.
652 MITCHELL ROAD NEWBURY PARK CA 91320
150mA ULTRA LOW DROPOUT, LOW
NOISE MICROPOWER LINEAR REGULATOR
SC5205
PRELIMINARY - February 7, 2000
BLOCK DIAGRAM
APPLICATION HINTS (Refer to Sheet 1):
(1) CIN (C1) is needed if the device is far from the sup-
ply’s filter capacitors, or for operation from a battery. A
value of 1.0µF or greater should be used. CIN may be
tantalum or aluminum electrolytic.
(2) CO (C3) should be a 1µF or greater tantalum or
aluminum electrolytic capacitor. Larger value capaci-
tors will improve the overall transient response.
(3) CBYP (C2 - required) 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.
PIN CONFIGURATION
Top View
SOT-23-5L
PIN DESCRIPTION
Pin # Pin Name Pin Function
1
2
3
4
5
VIN
GND
EN
Supply voltage input.
Ground.
Active high enable input. Connect to VIN if not being used.
Voltage output.
VO
BYP
Reference bypass. Connect a 10nF capacitor (required) between this pin and GND to reduce
output noise.
4
© 2000 SEMTECH CORP.
652 MITCHELL ROAD NEWBURY PARK CA 91320
150mA ULTRA LOW DROPOUT, LOW
NOISE MICROPOWER LINEAR REGULATOR
SC5205
PRELIMINARY - February 7, 2000
DEVICE OUTLINE - SOT-23-5L
MINIMUM LAND PATTERN - SOT-23-5L
ECN 00-850
5
© 2000 SEMTECH CORP.
652 MITCHELL ROAD NEWBURY PARK CA 91320
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