SP317LN-L [SIPEX]
3-Terminal Adjustable Voltage Regulator; 三端可调稳压器
| 型号： | SP317LN-L |
| 厂家： | 
SIPEX CORPORATION |
| 描述： | 3-Terminal Adjustable Voltage Regulator |
| 文件： | 总13页 (文件大小：577K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Solved by
SP317L
TM
3-Terminal Adjustable Voltaꢀe Reꢀulator
Features
NSOIC-8 Package
Adjustable Output Down to 1.2V
·
·
Guaranteed 100mA Output Current
Output Short Circuit Protected
Line Regulation: 0.01%/V
Load Regulation: 0.1%
Current Limit Constant with Temperature
VIN
ꢀ
8
NC
VOUT
VOUT
ADJ
2
3
ꢁ
7
6
ꢂ
VOUT
VOUT
NC
·
·
·
·
·
70 dB Ripple Rejection
Available in Lead Free, RoHS Compliant
Package
Applications
·
High Efficiency Linear Regulators
Post Regulation for Switching Supplies
Microprocessor Power Supply
Mother Board I/O Power Supply
·
·
·
general Description
The SP317L is an adjustable 3-terminal positive voltage regulator capable of supplying 100mA over a 1.2V
to 12V output range. This voltage regulator is exceptionally easy to use and requires only two external
resistors to set the output voltage. Both line and load regulation are better than standard fixed regulators.
In addition to higher performance than fixed regulators, SP317L employs overload protection. Included on
the chip are current limiting and thermal overload protection. All overload protection circuitry remains fully
functional even when the adjustment terminal is disconnected.
The SP317L is available in standard TO-92 and NSOIC-8 packages.
NSOIC-8
TO-92
Figure ꢀ. Package Types of SP317L
Date: 8/ꢀ/06 Rev H
SP3ꢀ7L 3-Terminal ꢀ00mA Adjustable Voltage Regulator
© 2006 Sipex Corporation
ꢀ
Pin Confiꢀuration
N Package
N1 Package
(Narrow SOIC-8)
(TO-92)
V
ꢀ
8
NC
IN
3
V
IN
V
V
2
3
ꢁ
7
6
ꢂ
V
OUT
OUT
OUT
OUT
2
1
V
OUT
V
ADJ
ADJ
NC
Top View
Figure 2. Pin Configuration of SP317L
Functional Block Diaꢀram
VIN
ADJ
VOUT
Figure 3. Functional Block Diagram of SP317L
Date: 8/ꢀ/06 Rev H
SP3ꢀ7L 3-Terminal ꢀ00mA Adjustable Voltage Regulator
© 2006 Sipex Corporation
2
Absolute ꢁaximum Ratinꢀs (Note 1)
Parameter
Symbol
Value
Unit
Input Voltage
VIN
20
V
Input-Output Voltage Differential
15
V
oC
Operating Junction Temperature Range
TJ
150
oC
Storage Temperature Range
Power Dissipation
TSTG
PD
-65 to 150
700
mW
oC
V
Lead Temperature (Soldering, 4 sec.)
ESD (Machine Model)
TLEAD
ESD
260
250
Note 1: Stresses greater than those listed under "Absolute Maximum Ratings" may cause permanent damage to the
device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond
those indicated under "Recommended Operating Conditions" is not implied. Exposure to "Absolute Maximum
Ratings" for extended periods may affect device reliability.
Recommended Operatinꢀ Conditions
Parameter
Symbol
Min
Max
Unit
Input Voltage
VIN
15
V
oC
Operating Junction Temperature Range
TJ
0
125
Date: 8/ꢀ/06 Rev H
SP3ꢀ7L 3-Terminal ꢀ00mA Adjustable Voltage Regulator
© 2006 Sipex Corporation
3
Electrical Characteristics
ꢀoC dꢁTJ d 125oC, VIN -VOUT = 5V, IOUT = 40mA, PD dꢁꢂꢃꢄmW, unless otherwise specified.
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
TJ = 25oC, 3Vdꢁ(VIN -VOUT) dꢁ15V
IL dꢁ20mA (Note 2)
0.01
0.04
%/V
RegLINE
Line Regulation
3Vdꢁ (VIN-VOUT) dꢁ 15V, IL dꢁ 20mA
(Note 2)
0.02
0.1
0.07
0.5
%/V
%
TJ = 25oC, 5mA dꢁIOUT dꢁ100mA
(Note 2)
RegLOAD
Load Regulation
5mA dꢁIOUT dꢁ100mA (Note 2)
0.3
0.04
50
1.5
0.2
%
TJ = 25oC, 10ms Pulse
Thermal Regulation
Adjust Pin Current
%/W
PA
100
5mA dꢁꢁIL dꢁ100mA
3Vdꢁ(VIN-VOUT) dꢁ15V
Adjust Pin Current
Change
0.2
5
PA
3V d (VIN -VOUT) d 15V
5mA d IOUT d 100mA
VREF
Reference Voltage
Current Limit
1.20
100
1.25
1.30
V
ILIMIT
3Vdꢁ(VIN -VOUT) d 13V
3Vd (VIN -VOUT) dꢁ13V
200
3.5
300
5
mA
mA
Minimum Load Cur-
rent
VOUT = 10V, f = 120Hz, CADJ = 0PF
VOUT = 10V, f = 120Hz, CADJ = 10PF
62
70
Ripple Rejection
dB
60
0oC dꢁ7J dꢁꢅꢃꢄoC
Temperature Stability
Long Term Stability
0.65
%
%
TJ=125oC, 1000 Hours
0.3
1
RMS Output Noise,
% of VOUT
TJ = 25oC, 10Hz dꢁf dꢁꢅꢀ.+z
0.003
%
Thermal Resistance
Junction to Case
TO-92
NSOIC-8
185
175
oC/W
Note 2: Regulation is measured at constant junction temperature, using pulse testing with a low duty cycle.
Changes in output voltage due to heating effects are covered under the specification of thermal regulation.
Date: 8/ꢀ/06 Rev H
SP3ꢀ7L 3-Terminal ꢀ00mA Adjustable Voltage Regulator
© 2006 Sipex Corporation
ꢁ
Typical Performance Characteristics
0.06
0.0ꢁ
ꢂ.2ꢁꢂ
ꢂ.2ꢁ0
ꢂ.23ꢂ
ꢂ.230
ꢂ.22ꢂ
ꢂ.220
ꢂ.2ꢀꢂ
0.02
IO=ꢀ0mA
0.00
IO=ꢀ00mA
-0.02
-0.0ꢁ
-0.06
SP317L
IO=ꢀ0mA
SP317L
VIN=ꢀ0.2ꢂV
VOUT=ꢂ.2ꢂV
-2ꢂ
0
2ꢂ
ꢂ0
7ꢂ
ꢀ00
ꢀ2ꢂ
8
ꢀ0
ꢀ2
ꢀꢁ
ꢀ6
ꢀ8
20
-ꢁꢂ
Temperature (oC)
Input Voltage (V)
Figure ꢁ. Load Regulation vs. Temperature
Figure ꢂ. Output Voltage vs. Input Voltage
ꢀ.26ꢂ
ꢀ.260
ꢀ.2ꢂꢂ
ꢀ.2ꢂ0
ꢀ.2ꢁꢂ
ꢀ.2ꢁ0
ꢀ.23ꢂ
ꢀ.230
ꢂꢁ
ꢂ2
ꢂ0
ꢁ8
ꢁ6
ꢁꢁ
ꢁ2
IO=ꢀ0mA
IO=ꢀ0mA
IO=ꢀ00mA
IO=ꢀ00mA
SP317L
VIN=ꢀ0.2ꢂV
SP317L
VIN=ꢀ0.2ꢂV
VOUT=ꢂ.2ꢂV
V
OUT=ꢂ.2ꢂV
-ꢁꢂ
-2ꢂ
0
2ꢂ
ꢂ0
7ꢂ
ꢀ00
ꢀ2ꢂ
-ꢁꢂ
-2ꢂ
0
2ꢂ
ꢂ0
7ꢂ
ꢀ00
ꢀ2ꢂ
Temperature(OC)
Temperature (oC)
Figure 6. Reference Voltage vs. Temperature
Figure 7. Adjustment Current vs. Temperature
Date: 8/ꢀ/06 Rev H
SP3ꢀ7L 3-Terminal ꢀ00mA Adjustable Voltage Regulator
© 2006 Sipex Corporation
ꢂ
Typical Performance Characteristics (Continued)
6
ꢂ
ꢁ
3
2
ꢀ
0
ꢀ.ꢃ
ꢀ.8
ꢀ.7
ꢀ.6
ꢀ.ꢂ
ꢀ.ꢁ
ꢀ.3
ꢀ.2
IO=ꢀ00mA
IO=ꢀ0mA
SP317L
VOUT=ꢂ.2ꢂV
TA=2ꢂoC
SP317L
VOUT=ꢂ.2ꢂV
2
ꢁ
6
8
ꢀ0
ꢀ2
ꢀꢁ
ꢀ6
-2ꢂ
0
2ꢂ
ꢂ0
7ꢂ
ꢀ00
ꢀ2ꢂ
-ꢁꢂ
Temperature (oC)
Input-Output Differential (V)
Figure ꢃ. Minimum Operating Current
Figure 8. Dropout Voltage vs. Temperature
80
70
60
ꢂ0
ꢁ0
30
20
ꢀ0
0
80
CADJ=ꢀ0PF
CADJ=ꢀ0PF
CADJ=0PF
70
60
ꢂ0
ꢁ0
30
20
ꢀ0
0
CADJ=0PF
SP317L
VIN=ꢀ0.2ꢂV
SP317L VIN
VOUT = ꢂV
IO= ꢁ0mA
-
V
OUT=ꢂ.2ꢂV
I
O=ꢁ0mA
f = ꢀ20Hz
TA= 2ꢂoC
TA=2ꢂoC
2
ꢁ
6
8
ꢀ0
ꢀ2
ꢀꢁ
ꢀ6
ꢀ00
ꢀ000
ꢀ0000
ꢀ00000
Output Voltage (V)
Frequency (Hz)
Figure ꢀ0. Ripple Rejection vs. Output Voltage
Figure ꢀꢀ. Ripple Rejection vs. Frequency
Date: 8/ꢀ/06 Rev H
SP3ꢀ7L 3-Terminal ꢀ00mA Adjustable Voltage Regulator
© 2006 Sipex Corporation
6
Typical Performance Characteristics (Continued)
'VOUT
'VOUT
S
P317L
IO=ꢁ0mA
VOUT=ꢂ.2ꢂV
SP317L
VIN=ꢀ0.2ꢂV
VOUT=ꢂ.2ꢂV
CIN=0.ꢀµ
F
CL=ꢀµ
F
CIN=0.ꢀµ
F
TA=2ꢂoC
CL=ꢀµ
F
TA=2ꢂoC
'VIN (ꢀ0.2ꢂV to ꢀꢀ.2ꢂV)
'IOUT (ꢂmA to ꢀ00mA)
50mA
Figure ꢀ2. Load Transient Response
Figure ꢀ3. Line Transient Response
'Power=ꢀW
S
P317L
VOUT=ꢂ.2ꢂV
CIN=0.ꢀµ
F
CL=ꢀµ
F
TA=2ꢂoC
'VOUT
1W
Figure ꢀꢁ. Thermal Regulation
Date: 8/ꢀ/06 Rev H
SP3ꢀ7L 3-Terminal ꢀ00mA Adjustable Voltage Regulator
© 2006 Sipex Corporation
7
Typical Application
S
P317L
SP317L
VIN
VIN
VOUT
VIN
VOUT
ꢂV
VIN
VOUT
ꢃV ~
ꢀ8V
ADJ
Rꢀ
2ꢁ0
7V ~
ꢀ8V
ADJ
Rꢀ
2ꢁ0
C2
Cꢀ
0.ꢀPF
0.ꢀPF
R2
ꢀ.ꢀK
Cꢀ
ꢀ000PF
(Note ꢁ)
Qꢀ
R3
Qꢀ
2N22ꢀꢃ
R2
720
TTL
2N2222
R3 ꢀ00
ꢀK
Rꢁ ꢀ0
(Note 3)
Figure ꢀ6. Current Limited 6V Charger
Note 3: Sets peak current, IPeak= 0.6V/Rꢁ
Figure ꢀꢂ. ꢂV Logic Regulator with Electronic
Shutdown (Minimum output = ꢀ.2V)
Note ꢁ: ꢀ000PF is recommended to filter out
any input transients.
SP317L
S
P317L
VOUT
ꢀ0V
VIN
VIN
VOUT
Rꢀ
2K
ꢂ%
ADJ
VIN
VIN
VOUT
VOUT
ꢀꢂV
R2
ADJ
Dꢀ
ꢀNꢁ002
ꢀ.ꢂK
ꢀ%
Rꢀ
2ꢁ0
Cꢀ
0.ꢀPF
C2
0.ꢀPF
Dꢀ
LM32ꢃ
C3
ꢀPF
Solid
Tantalum
R2
ꢂK
Cꢀ
ꢀ0PF
R3
267
ꢀ%
Figure ꢀ8. Adjustable Regulator with
Improved Ripple Rejection
Figure ꢀ7. High Stability ꢀ0V Regulator
Note ꢂ: Discharge Cꢀ if output is shorted
to ground.
Date: 8/ꢀ/06 Rev H
SP3ꢀ7L 3-Terminal ꢀ00mA Adjustable Voltage Regulator
© 2006 Sipex Corporation
8
SP317L
SP317L
+
VIN
VOUT
VOUT = ꢀ.2ꢂV(R2/Rꢀ +ꢀ)
VOUT
ꢀꢂV
VIN
VIN
VOUT
ADJ
Rꢀ
ADJ
ꢀ20
Rꢀ
2ꢁ0
C2
0.ꢀPF
R3
ꢂ0k
R2
2K
ꢀNꢁ002
Transformer
Rectifiers
and Filter
Capacitor
Rꢀ
2.7k
2N2ꢃ0ꢂ
Rꢁ=2R3=22
Cꢀ
2ꢂPF
Qꢀ
2N22ꢀꢃ
-
R3 ꢀ0
Figure ꢀꢃ. Adjustable Regulator with Current Limit
Note 6: Short circuit current is approximately
600mV/R3 or 60mA
Figure 20. Slow Turn-on ꢀꢂV Regulator
Note 7: At 2.ꢂmA output only 3/ꢁV of drop occurs
in R3 and Rꢁ.
Date: 8/ꢀ/06 Rev H
SP3ꢀ7L 3-Terminal ꢀ00mA Adjustable Voltage Regulator
© 2006 Sipex Corporation
ꢃ
APPLICATION INFORꢁATION
In operation, the SP3ꢀ7L develops a nominal
ꢀ.2ꢂV reference voltage, VREF, between
the output and the adjustment terminal.
The reference voltage is impressed across
program resistor Rꢀ and, since the voltage
is constant, a constant current Iꢀ then flows
through the output set resistor R2, giving an
output voltage of:
cause excessive ringing. This occurs with
values between ꢂ00pF and ꢂ000pF.
A
ꢀµF solid tantalum (or 2ꢂµF aluminum
electrolytic) on the output swamps this
effect and insures stability.
An input bypass capacitor is recommended
in case the regulator is more than 6 inches
away from the usual large filter capacitor.
A 0.ꢀ µF disc or ꢀµF solid tantalum on
the input is suitable input bypassing for
almost all applications. The device is more
sensitive to the absence of input bypassing
when adjustment or output capacitors are
used, but the above values will eliminate
the possibility of problems.
Vout = Vref {ꢀ + R2/Rꢀ} + Iadj(R2)
*
Since the 100μA current from the adjust-
ment terminal represents an error term,
the SP3ꢀ7L was designed to minimize
IADJ and make it very constant with line
and load changes. To do this, all quiescent
operating current is returned to the output
establishing a minimum load current re-
quirement. If there is insufficient load on
The adjustment terminal can be bypassed
to ground on the SP3ꢀ7L to improve ripple
rejection and noise. This bypass capacitor
prevents ripple and noise from being
amplified as the output voltage is increased.
With a ꢀ0µF bypass capacitor 80dB ripple
rejection is obtainable at any output level.
Increases over ꢀ0µF do not appreciably
improve the ripple rejection at frequencies
above ꢀ20Hz. If the bypass capacitor is
used, it is sometimes necessary to include
protection diodes to prevent the capacitor
fromdischargingthroughinternallowcurrent
paths and damaging the device. In general,
the best type of capacitors to use is solid
tantalum. Solid tantalum capacitors have
lowimpedanceevenathighfrequencies.
Depending upon capacitor construction, it
takes about 2ꢂµF in aluminum electrolytic
to equal ꢀµF solid tantalum at high
frequencies. Ceramic capacitors are also
good at high frequencies; but some types
have a large decrease in capacitance
at frequencies around 0.ꢂMHz. For this
reason, a 0.0ꢀµF disc may seem to work
better than a 0.ꢀµF disc as a bypass.
the output, the output will rise.
SP317L
VOUT
VIN
V
IN
I1
ADJ
VREF
VOUT
R 1
I ADJ
R 2
Fiꢀure 21: R1, R2 and Quiescent Current
EXTERNAL CAPACITORS
Although the SP3ꢀ7L is stable with no
output capacitors, like any feedback circuit,
certain values of external capacitance can
Date: 8/ꢀ/06 Rev H
SP3ꢀ7L 3-Terminal ꢀ00mA Adjustable Voltage Regulator
© 2006 Sipex Corporation
ꢀ0
PACꢂAgE: 3 PIN TO-92
Unit: mm(inch)
ꢁechanical Dimensions
TO-92
ꢀ.ꢀ00(0.0ꢁ3)
ꢀ.ꢁ00(0.0ꢂꢂ)
3.ꢁ30(0.ꢀ3ꢂ)
MIN
0.360(0.0ꢀꢁ)
0.ꢂꢀ0(0.020)
0.000(0.000)
0.380(0.0ꢀꢂ)
Φ
ꢀ.600(0.063)
MAX
ꢁ.ꢁ00(0.ꢀ73)
ꢁ.700(0.ꢀ8ꢂ)
0.380(0.0ꢀꢂ)
0.ꢂꢂ0(0.022)
ꢀ.270(0.0ꢂ0)
TYP
2.ꢁꢁ0(0.0ꢃ6)
2.6ꢁ0(0.ꢀ0ꢁ)
Date: 8/ꢀ/06 Rev H
SP3ꢀ7L 3-Terminal ꢀ00mA Adjustable Voltage Regulator
© 2006 Sipex Corporation
ꢀꢀ
PACꢂAgE: 8 PIN NSOIC
ꢁechanical Dimensions (Continued)
NSOIC-8
Unit: mm(inch)
ꢁ.800(0.ꢀ8ꢃ)
ꢂ.000(0.ꢀꢃ7)
0.320(0.0ꢀ3)
ꢀ.3ꢂ0(0.0ꢂ3)
ꢀ.7ꢂ0(0.06ꢃ)
0.67ꢂ(0.027)
0.72ꢂ(0.02ꢃ)
D
ꢂ.800(0.228)
6.200(0.2ꢁꢁ)
ꢀ.270(0.0ꢂ0)
TYP
D
20:ꢀ
φ
0.800(0.03ꢀ)
0.ꢀ00(0.00ꢁ)
0.300(0.0ꢀ2)
0.200(0.008)
0°
8°
ꢀ.000(0.03ꢃ)
3.800(0.ꢀꢂ0)
ꢁ.000(0.ꢀꢂ7)
ꢀ°
0.330(0.0ꢀ3)
0.ꢂꢀ0(0.020)
ꢂ°
0.ꢃ00(0.03ꢂ)
6)
.00
0(0
.ꢀꢂ
R0
0.ꢀꢃ0(0.007)
0.2ꢂ0(0.0ꢀ0)
Date: 8/ꢀ/06 Rev H
SP3ꢀ7L 3-Terminal ꢀ00mA Adjustable Voltage Regulator
© 2006 Sipex Corporation
ꢀ2
ORDERINg INFORꢁATION
SP317L
/
TR: Tape and Reel or Ammo
Part Number
Blank: Tube or Bulk
-L
: Lead Free and
RoHS Compliant
Package
N
1
: TO-92
N:
NSOIC-8
Sipex Corporation's Pb-free products, as designated with "-L" suffix in the part number, are RoHS compliant.
Temperature Voltaꢀe Output
Pin
Count
Packinꢀ
Type
Part Number
Packaꢀe
Ranꢀe
Tolerance Voltaꢀe
0ºC to +ꢀ2ꢂºC
0ºC to +ꢀ2ꢂºC
0ºC to +ꢀ2ꢂºC
ꢀ.0%
ꢀ.0%
ꢀ.0%
Adj
Adj
Adj
SP3ꢀ7LNꢀ-L/TR
SP3ꢀ7LN-L
TO-ꢃ2
3
8
8
2,000/AMMO
ꢀ00/TUBE
2,ꢂ00/TR
NSOIC 8
NSOIC 8
SP3ꢀ7LN-L/TR
Solved by
Sipex Corporation
Headquarters and
Sales Office
TM
233 South Hillview Drive
Milpitas, CA ꢃꢂ03ꢂ
TEL: (ꢁ08) ꢃ3ꢁ-7ꢂ00
FAX: (ꢁ08) ꢃ3ꢂ-7600
Sipex Corporation reserves the right to make changes to any products described herein. Sipex does not assume
any liability arising out of the application or use of any product or circuit described herein; neither does it convey
any license under its patent rights nor the rights of others.
Date: 8/ꢀ/06 Rev H
SP3ꢀ7L 3-Terminal ꢀ00mA Adjustable Voltage Regulator
© 2006 Sipex Corporation
ꢀ3
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