FT531 [ETC]
Ultra Low Noise, High PSRR, 250mA LDO; 超低噪声，高PSRR ， 250毫安LDO
| 型号： | FT531 |
| 厂家： | 
ETC |
| 描述： | Ultra Low Noise, High PSRR, 250mA LDO |
| 文件： | 总23页 (文件大小：271K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Fremont Micro Devices
Ultra Low Noise, High PSRR, 250mA LDO
FT531xx
DESCRIPTION
FEATURES
¾
¾
¾
¾
¾
Ultra-Low Noise for RF Application
The FT531xx is designed for portable RF and
wireless applications with demanding performance
and space requirements. The FT531xx performance is
optimized for battery powered systems to deliver
ultra low noise and low quiescent current. Regulator
ground current increases only slightly in dropout,
further prolonging the battery life.
Ultra-Fast Response in Line/Load Transient
Quick Start-Up (Typically 100uS)
Low Quiescent Current: 36uA
Less than 0.1uA Standby Current When
Shutdown
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
Low Dropout Voltage: 120mV @ 100mA
Wide Operating Voltage Ranges : 2.5V to 6V
TTL-Logic-Controlled Shutdown Input
Low Temperature Coefficient
The FT531xx also works with low-ESR ceramic
capacitors, reducing the amount of board space
necessary for power applications, critical in
hand-held wireless devices. The FT531xx consumes
less than 0.1uA in shutdown mode and has fast
turn-on time less than 100uS. The other features
include low dropout voltage, high output accuracy,
current limiting protection, and high ripple rejection
ratio. The FT531xx is available in the 5-lead of
SOT-23-5(L), SC-70 and the 3-lead of SOT-23-3(L),
SOT-89-3(L), SOT-23 packages.
Current Limiting Protection
Only 1uF Output Capacitor Required
High Power Supply Rejection Ratio
ROHS Compliant and 100% Lead (Pb)-Free
Custom Voltage Available
Custom Options for CE Logic and Build-in
Pull-up/down Available
APPLLICATIONS
¾
¾
¾
¾
¾
¾
CDMA/GSM Cellular Handsets
Battery-Powered Equipment
Laptop, Palmtops, Notebook Computers
Hand-Held Instruments
PCMCIA Cards
Portable Information Appliances
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Page 1 of 23
DS531-A8
Fremont Micro Devices
FT531xx
TYPICALAPPLICATION CIRCUIT
Typical Application Circuit
ABSOLUTE MAXIMUM RATINGS
Supply Input Voltage --------------------------------------------------------------------------------------- 6V
Power Dissipation, PD@ TA=27
SOT-23-5(L) ----------------------------------------------------------------------------------------------- 400mW
SOT-23-3(L) ----------------------------------------------------------------------------------------------- 400mW
SOT-89-3(L) ----------------------------------------------------------------------------------------------- 600mW
SC-70 ---------------------------------------------------------------------------------------------------- 300mW
SOT-23 --------------------------------------------------------------------------------------------------- 250mW
Package Thermal Resistance
SOT-23-5(L)------------------------------------------------------------------------------------------------ 250 /W
SOT-23-3(L)------------------------------------------------------------------------------------------------ 250 /W
SOT-89-3(L)------------------------------------------------------------------------------------------------ 170 /W
SC-70 ------------------------------------------------------------------------------------------------------- 330 /W
SOT-23 ----------------------------------------------------------------------------------------------------- 380 /W
Lead Temperature (Soldering, 10sec.) ----------------------------------------------------------------- 260
Storage Temperature Range ------------------------------------------------------------------------- 60 to 150
ESD Susceptibility
HBM(Human Body Mode) -------------------------------------------------------------------------------4kV
MM(Machine Mode) --------------------------------------------------------------------------------------200V
* Stresses exceed those listed under “Absolute Maximum Ratings” may cause permanent damage to the
device. Functional operation of the device at conditions beyond those listed in the specification is not
guaranteed. Prolonged exposure to extreme conditions may affect device reliability or functionality.
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Page 2 of 23
DS531-A8
Fremont Micro Devices
FT531xx
PIN CONFIGURATION
TERMINAL FUNCTION
Pin Function
Pin Name
EN
Chip Enable (Active High). No Pull-Down Resistor Build-in
For package SOT-23-3(L) ,SOT-89-3(L) and SOT-23 the EN is internally connected to
VIN
VIN
VOUT
NC
Power Input Voltage
Output Voltage
No Connection
Ground
GND
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Page 3 of 23
DS531-A8
Fremont Micro Devices
FT531xx
ORDERING INFORMATION
FT531
DESIGNATOR SYMBOL OUTPUT VOLTAGE
A
B
C
D
E
F
1.2V
1.3V
1.5V
1.8V
2.5V
2.7V
2.8V
2.85V
3.0V
3.3V
3.6V
4.2V
G
H
I
J
K
L
DESIGNATOR SYMBOL PIN CONFIGURATION
PACKAGE TYPE
a
b
c
d
e
f
SOT-23-5A
SOT-23-5B
SOT-23-5C
SC-70A
SOT-23-5(L)
SC-70 / SOT-353
SC-70B
SC-70C
g
h
i
SOT-23-3A
SOT-23A
SOT-89-3A
SOT-23-3(L)
SOT-23
SOT-89-3(L)
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Page 4 of 23
DS531-A8
Fremont Micro Devices
FT531xx
MARKING RULE
c
d
Represent Product Series
SYMBOL
6
PRODUCT SERIES
FT531xx
Represent Output Voltage and operating temperature range
G represent the output voltage is 2.8V, operating temperature is –40 ~ 85
For internal reference.
.
BLOCK DIAGRAM
Block Diagram
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Page 5 of 23
DS531-A8
Fremont Micro Devices
FT531xx
ELECTRICAL CHARACTERISTICS
Vout=1.2V; En=Vin=2.5V; Cout= uF unless otherwise noted
PARAMETER
Output Voltage
Accuracy
SYMBOL
CONDITIONS
MIN
TYP MAX UNITS
Vout
Iout=1mA
-2
---
+2
%
Imax
Ishort
Vline
Vin=2.5V
Vin=2.5V
2.5V~6V
250
---
300
20
---
---
mA
mA
Current Limiter
Line Regulations
---
0.01
0.3
%/V
Load Regulation
Dropout Voltage
Supply Current
Standby Current
Vload
Vdrop
Iq
1mA Iout 100mA
Iout=100mA
---
---
---
---
10
400
36
---
---
---
1
mV
mV
uA
Vin=2.5V,Iout=0mA
Shut down
Istby
0.01
uA
Temperature
Coefficient
Output Noise
Voltage
Vout/ ( Temp*
Vout)
Iout=30mA
---
---
100
30
---
---
ppm/
-40°C Temp 85°C
10Hz~100kHz
uVrms
eNO
PSRR@1k
---
---
72
60
---
---
Ripple
Vin=2.5VDC+1Vp-pAC,
Iout=30mA
dB
nA
Rejection Rate
PSRR@10k
EN Input
Ien
---
0
100
Bias Current
VL
VH
---
---
---
---
---
0.3
6
V
V
EN Threshold
1.2
* Dropout voltage is defined as the input to output differential at which the output voltage drops 2%
below its nominal value measured at 1V differential.
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Page 6 of 23
DS531-A8
Fremont Micro Devices
FT531xx
Vout=1.3V; En=Vin=(Vout+1)V; Cout=1uF unless otherwise noted
PARAMETER
Output Voltage
Accuracy
SYMBOL
CONDITIONS
MIN
TYP MAX UNITS
Vout
Iout=1mA
-2
---
+2
%
Imax
Ishort
Vline
Vin=Vout+1V
Vin=Vout+1V
250
---
300
20
---
---
mA
mA
Current Limiter
Line Regulations
(Vout+1.0V)~6V
---
0.01
0.3
%/V
Load Regulation
Dropout Voltage
Supply Current
Standby Current
Vload
Vdrop
Iq
1mA Iout 100mA
Iout=100mA
---
---
---
---
10
380
36
---
---
---
1
mV
mV
uA
Vin=(Vout+1)V,Iout=0mA
Shut down
Istby
0.01
uA
Temperature
Coefficient
Output Noise
Voltage
Vout/ ( Temp*
Vout)
Iout=30mA
---
---
100
30
---
---
ppm/
-40°C Temp 85°C
10Hz~100kHz
uVrms
eNO
PSRR@1k
---
---
72
60
---
---
Ripple
Vin=Vout+1VDC+1Vp-pAC
Iout=30mA
dB
nA
Rejection Rate
PSRR@10k
EN Input
Ien
---
0
100
Bias Current
VL
VH
---
---
---
---
---
0.3
6
V
V
EN Threshold
1.2
* Dropout voltage is defined as the input to output differential at which the output voltage drops 2%
below its nominal value measured at 1V differential.
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Page 7 of 23
DS531-A8
Fremont Micro Devices
FT531xx
Vout=1.5V; En=Vin=(Vout+1)V; Cout=1uF unless otherwise noted
PARAMETER
Output Voltage
Accuracy
SYMBOL
CONDITIONS
MIN
TYP MAX UNITS
Vout
Iout=1mA
-2
---
+2
%
Imax
Ishort
Vline
Vin=Vout+1V
Vin=Vout+1V
250
---
300
20
---
---
mA
mA
Current Limiter
Line Regulations
(Vout+1.0V)~6V
---
0.01
0.3
%/V
Load Regulation
Dropout Voltage
Supply Current
Standby Current
Vload
Vdrop
Iq
1mA Iout 100mA
Iout=100mA
---
---
---
---
10
300
36
---
---
---
1
mV
mV
uA
Vin=(Vout+1)V,Iout=0mA
Shut down
Istby
0.01
uA
Temperature
Coefficient
Output Noise
Voltage
Vout/ ( Temp*
Vout)
Iout=30mA
---
---
100
30
---
---
ppm/
-40°C Temp 85°C
10Hz~100kHz
uVrms
eNO
PSRR@1k
---
---
72
60
---
---
Ripple
Vin=Vout+1VDC+1Vp-pAC
Iout=30mA
dB
nA
Rejection Rate
PSRR@10k
EN Input
Ien
---
0
100
Bias Current
VL
VH
---
---
---
---
---
0.3
6
V
V
EN Threshold
1.2
* Dropout voltage is defined as the input to output differential at which the output voltage drops 2%
below its nominal value measured at 1V differential.
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Page 8 of 23
DS531-A8
Fremont Micro Devices
FT531xx
Vout=1.8V; En=Vin=(Vout+1)V; Cout=1uF unless otherwise noted
PARAMETER
Output Voltage
Accuracy
SYMBOL
CONDITIONS
MIN
TYP MAX UNITS
Vout
Iout=1mA
-2
---
+2
%
Imax
Ishort
Vline
Vin=Vout+1V
Vin=Vout+1V
250
---
300
20
---
---
mA
mA
Current Limiter
Line Regulations
(Vout+1.0V)~6V
---
0.01
0.3
%/V
Load Regulation
Dropout Voltage
Supply Current
Standby Current
Vload
Vdrop
Iq
1mA Iout 100mA
Iout=100mA
---
---
---
---
10
200
36
---
---
---
1
mV
mV
uA
Vin=(Vout+1)V,Iout=0mA
Shut down
Istby
0.01
uA
Temperature
Coefficient
Output Noise
Voltage
Vout/ ( Temp*
Vout)
Iout=30mA
---
---
100
30
---
---
ppm/
-40°C Temp 85°C
10Hz~100kHz
uVrms
eNO
PSRR@1k
---
---
72
60
---
---
Ripple
Vin=Vout+1VDC+1Vp-pAC
Iout=30mA
dB
nA
Rejection Rate
PSRR@10k
EN Input
Ien
---
0
100
Bias Current
VL
VH
---
---
---
---
---
0.3
6
V
V
EN Threshold
1.2
* Dropout voltage is defined as the input to output differential at which the output voltage drops 2%
below its nominal value measured at 1V differential.
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Page 9 of 23
DS531-A8
Fremont Micro Devices
FT531xx
Vout=2.5V; En=Vin=(Vout+1)V; Cout=1uF unless otherwise noted
PARAMETER
Output Voltage
Accuracy
SYMBOL
CONDITIONS
MIN
TYP MAX UNITS
Vout
Iout=1mA
-2
---
+2
%
Imax
Ishort
Vline
Vin=Vout+1V
Vin=Vout+1V
250
---
300
20
---
---
mA
mA
Current Limiter
Line Regulations
(Vout+1.0V)~6V
---
0.01
0.3
%/V
Load Regulation
Dropout Voltage
Supply Current
Standby Current
Vload
Vdrop
Iq
1mA Iout 100mA
Iout=100mA
---
---
---
---
10
140
36
---
---
---
1
mV
mV
uA
Vin=(Vout+1)V,Iout=0mA
Shut down
Istby
0.01
uA
Temperature
Coefficient
Output Noise
Voltage
Vout/ ( Temp*
Vout)
Iout=30mA
---
---
100
40
---
---
ppm/
-40°C Temp 85°C
10Hz~100kHz
uVrms
eNO
PSRR@1k
---
---
72
60
---
---
Ripple
Vin=Vout+1VDC+1Vp-pAC
Iout=30mA
dB
nA
Rejection Rate
PSRR@10k
EN Input
Ien
---
0
100
Bias Current
VL
VH
---
---
---
---
---
0.3
6
V
V
EN Threshold
1.2
* Dropout voltage is defined as the input to output differential at which the output voltage drops 2%
below its nominal value measured at 1V differential.
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Page 10 of 23
DS531-A8
Fremont Micro Devices
FT531xx
Vout=2.7V; En=Vin=(Vout+1)V; Cout=1uF unless otherwise noted
PARAMETER
Output Voltage
Accuracy
SYMBOL
CONDITIONS
MIN
TYP MAX UNITS
Vout
Iout=1mA
-2
---
+2
%
Imax
Ishort
Vline
Vin=Vout+1V
Vin=Vout+1V
250
---
300
20
---
---
mA
mA
Current Limiter
Line Regulations
(Vout+1.0V)~6V
---
0.01
0.3
%/V
Load Regulation
Dropout Voltage
Supply Current
Standby Current
Vload
Vdrop
Iq
1mA Iout 100mA
Iout=100mA
---
---
---
---
10
130
36
---
---
---
1
mV
mV
uA
Vin=(Vout+1)V,Iout=0mA
Shut down
Istby
0.01
uA
Temperature
Coefficient
Output Noise
Voltage
Vout/ ( Temp*
Vout)
Iout=30mA
---
---
100
40
---
---
ppm/
-40°C Temp 85°C
10Hz~100kHz
uVrms
eNO
PSRR@1k
---
---
72
60
---
---
Ripple
Vin=Vout+1VDC+1Vp-pAC
Iout=30mA
dB
nA
Rejection Rate
PSRR@10k
EN Input
Ien
---
0
100
Bias Current
VL
VH
---
---
---
---
---
0.3
6
V
V
EN Threshold
1.2
* Dropout voltage is defined as the input to output differential at which the output voltage drops 2%
below its nominal value measured at 1V differential.
www.fremontmicro.com
Page 11 of 23
DS531-A8
Fremont Micro Devices
FT531xx
Vout=2.8V; En=Vin=(Vout+1)V; Cout=1uF unless otherwise noted
PARAMETER
Output Voltage
Accuracy
SYMBOL
CONDITIONS
MIN
TYP MAX UNITS
Vout
Iout=1mA
-2
---
+2
%
Imax
Ishort
Vline
Vin=Vout+1V
Vin=Vout+1V
250
---
300
20
---
---
mA
mA
Current Limiter
Line Regulations
(Vout+1.0V)~6V
---
0.01
0.3
%/V
Load Regulation
Dropout Voltage
Supply Current
Standby Current
Vload
Vdrop
Iq
1mA Iout 100mA
Iout=100mA
---
---
---
---
10
120
36
---
---
---
1
mV
mV
uA
Vin=(Vout+1)V,Iout=0mA
Shut down
Istby
0.01
uA
Temperature
Coefficient
Output Noise
Voltage
Vout/ ( Temp*
Vout)
Iout=30mA
---
---
100
40
---
---
ppm/
-40°C Temp 85°C
10Hz~100kHz
uVrms
eNO
PSRR@1k
---
---
72
60
---
---
Ripple
Vin=Vout+1VDC+1Vp-pAC
Iout=30mA
dB
nA
Rejection Rate
PSRR@10k
EN Input
Ien
---
0
100
Bias Current
VL
VH
---
---
---
---
---
0.3
6
V
V
EN Threshold
1.2
* Dropout voltage is defined as the input to output differential at which the output voltage drops 2%
below its nominal value measured at 1V differential.
www.fremontmicro.com
Page 12 of 23
DS531-A8
Fremont Micro Devices
FT531xx
Vout=2.85V; En=Vin=(Vout+1)V; Cout=1uF unless otherwise noted
PARAMETER
Output Voltage
Accuracy
SYMBOL
CONDITIONS
MIN
TYP MAX UNITS
Vout
Iout=1mA
-2
---
+2
%
Imax
Ishort
Vline
Vin=Vout+1V
Vin=Vout+1V
250
---
300
20
---
---
mA
mA
Current Limiter
Line Regulations
(Vout+1.0V)~6V
---
0.01
0.3
%/V
Load Regulation
Dropout Voltage
Supply Current
Standby Current
Vload
Vdrop
Iq
1mA Iout 100mA
Iout=100mA
---
---
---
---
10
120
36
---
---
---
1
mV
mV
uA
Vin=(Vout+1)V,Iout=0mA
Shut down
Istby
0.01
uA
Temperature
Coefficient
Output Noise
Voltage
Vout/ ( Temp*
Vout)
Iout=30mA
---
---
100
40
---
---
ppm/
-40°C Temp 85°C
10Hz~100kHz
uVrms
eNO
PSRR@1k
---
---
72
60
---
---
Ripple
Vin=Vout+1VDC+1Vp-pAC
Iout=30mA
dB
nA
Rejection Rate
PSRR@10k
EN Input
Ien
---
0
100
Bias Current
VL
VH
---
---
---
---
---
0.3
6
V
V
EN Threshold
1.2
* Dropout voltage is defined as the input to output differential at which the output voltage drops 2%
below its nominal value measured at 1V differential.
www.fremontmicro.com
Page 13 of 23
DS531-A8
Fremont Micro Devices
FT531xx
Vout=3.0V; En=Vin=(Vout+1)V; Cout=1uF unless otherwise noted
PARAMETER
Output Voltage
Accuracy
SYMBOL
CONDITIONS
MIN
TYP MAX UNITS
Vout
Iout=1mA
-2
---
+2
%
Imax
Ishort
Vline
Vin=Vout+1V
Vin=Vout+1V
250
---
300
20
---
---
mA
mA
Current Limiter
Line Regulations
(Vout+1.0V)~6V
---
0.01
0.3
%/V
Load Regulation
Dropout Voltage
Supply Current
Standby Current
Vload
Vdrop
Iq
1mA Iout 100mA
Iout=100mA
---
---
---
---
10
120
36
---
---
---
1
mV
mV
uA
Vin=(Vout+1)V,Iout=0mA
Shut down
Istby
0.01
uA
Temperature
Coefficient
Output Noise
Voltage
Vout/ ( Temp*
Vout)
Iout=30mA
---
---
100
40
---
---
ppm/
-40°C Temp 85°C
10Hz~100kHz
uVrms
eNO
PSRR@1k
---
---
72
60
---
---
Ripple
Vin=Vout+1VDC+1Vp-pAC
Iout=30mA
dB
nA
Rejection Rate
PSRR@10k
EN Input
Ien
---
0
100
Bias Current
VL
VH
---
---
---
---
---
0.3
6
V
V
EN Threshold
1.2
* Dropout voltage is defined as the input to output differential at which the output voltage drops 2%
below its nominal value measured at 1V differential.
www.fremontmicro.com
Page 14 of 23
DS531-A8
Fremont Micro Devices
FT531xx
Vout=3.3V; En=Vin=(Vout+1)V; Cout=1uF unless otherwise noted
PARAMETER
Output Voltage
Accuracy
SYMBOL
CONDITIONS
MIN
TYP MAX UNITS
Vout
Iout=1mA
-2
---
+2
%
Imax
Ishort
Vline
Vin=Vout+1V
Vin=Vout+1V
250
---
300
20
---
---
mA
mA
Current Limiter
Line Regulations
(Vout+1.0V)~6V
---
0.01
0.3
%/V
Load Regulation
Dropout Voltage
Supply Current
Standby Current
Vload
Vdrop
Iq
1mA Iout 100mA
Iout=100mA
---
---
---
---
10
120
36
---
---
---
1
mV
mV
uA
Vin=(Vout+1)V,Iout=0mA
Shut down
Istby
0.01
uA
Temperature
Coefficient
Output Noise
Voltage
Vout/ ( Temp*
Vout)
Iout=30mA
---
---
100
40
---
---
ppm/
-40°C Temp 85°C
10Hz~100kHz
uVrms
eNO
PSRR@1k
---
---
72
60
---
---
Ripple
Vin=Vout+1VDC+1Vp-pAC
Iout=30mA
dB
nA
Rejection Rate
PSRR@10k
EN Input
Ien
---
0
100
Bias Current
VL
VH
---
---
---
---
---
0.3
6
V
V
EN Threshold
1.2
* Dropout voltage is defined as the input to output differential at which the output voltage drops 2%
below its nominal value measured at 1V differential.
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Page 15 of 23
DS531-A8
Fremont Micro Devices
FT531xx
Vout=3.6V; En=Vin=(Vout+1)V; Cout=1uF unless otherwise noted
PARAMETER
Output Voltage
Accuracy
SYMBOL
CONDITIONS
MIN
TYP MAX UNITS
Vout
Iout=1mA
-2
---
+2
%
Imax
Ishort
Vline
Vin=Vout+1V
Vin=Vout+1V
250
---
300
20
---
---
mA
mA
Current Limiter
Line Regulations
(Vout+1.0V)~6V
---
0.01
0.3
%/V
Load Regulation
Dropout Voltage
Supply Current
Standby Current
Vload
Vdrop
Iq
1mA Iout 100mA
Iout=100mA
---
---
---
---
10
120
36
---
---
---
1
mV
mV
uA
Vin=(Vout+1)V,Iout=0mA
Shut down
Istby
0.01
uA
Temperature
Coefficient
Output Noise
Voltage
Vout/ ( Temp*
Vout)
Iout=30mA
---
---
100
40
---
---
ppm/
-40°C Temp 85°C
10Hz~100kHz
uVrms
eNO
PSRR@1k
---
---
72
60
---
---
Ripple
Vin=Vout+1VDC+1Vp-pAC
Iout=30mA
dB
nA
Rejection Rate
PSRR@10k
EN Input
Ien
---
0
100
Bias Current
VL
VH
---
---
---
---
---
0.3
6
V
V
EN Threshold
1.2
* Dropout voltage is defined as the input to output differential at which the output voltage drops 2%
below its nominal value measured at 1V differential.
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Page 16 of 23
DS531-A8
Fremont Micro Devices
FT531xx
TYPICAL PERFORMANCE CHARACTERISTICS FT531I
Vin=4.0V, Vout=3.0V, Co=1uF, temp=27 unless otherwise noted
Quiescent Current vs. Temp
50
45
40
35
30
25
20
-40 -20
0
20
40
60
80 100
Temp(C)
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Page 17 of 23
DS531-A8
Fremont Micro Devices
FT531xx
www.fremontmicro.com
Page 18 of 23
DS531-A8
Fremont Micro Devices
FT531xx
PAKAGING INFORMATION
SOT-23-5L
www.fremontmicro.com
Page 19 of 23
DS531-A8
Fremont Micro Devices
FT531xx
SOT-23-3L
www.fremontmicro.com
Page 20 of 23
DS531-A8
Fremont Micro Devices
FT531xx
SOT-89-3L
www.fremontmicro.com
Page 21 of 23
DS531-A8
Fremont Micro Devices
FT531xx
SC-70
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Page 22 of 23
DS531-A8
Fremont Micro Devices
FT531xx
SOT-23
www.fremontmicro.com
Page 23 of 23
DS531-A8
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