How it Works
Datasheet
Loading...
SPX2702U5

Datasheet SPX2702AU5, SPX2702T3, SPX2702T5, SPX2702U3, SPX2702U5 Datasheet (Sipex Corporation)

...
Download
Page 1
SPX2700/01/02
700mA Low Dropout Voltage Regulators
With Shutdown
(PRELIMINARY INFORMATION)
FEATURES
Output Current 700mA at 3.3V and 5V • Battery Powered Systems
•
Internal Short Circuit Current Limit
•
Dropout Voltage 0.5V at 700mA Output • Automotive Electronics
•
Extremely Tight Load and Line Regulation
•
Very Low Temperature Coefficient
•
Mirror Image Insertion Protection
•
Unregulated DC Input Can Withstand -20V Reverse Battery
•
and +60V Positive Transients
Direct Replacement For LM2937 Socket
•
PRODUCT DESCRIPTION
The SPX2700/01/02 are a low power positive voltage regulators. The SPX2700/01/02 offers 700mA output current with a dropout voltage of only 0.5V and over temperature dropout is up to 1V. The quiescent current is 10mA at differential output of 5V and output current of 700mA. A higher quiescent current can exist when the device is in dropout mode (V
The regulator will automatically shut down to protect both the internal circuits and the load. This device also features short circuit and thermal overload protection.
The SPX2700/01/02 is offered in 3 and 5 pin TO-220, TO-263 and 3-pin SOT-223 packages compatible with other 5V and 3.3V regulators, TO-263 and 3-pin SOT-223. The device is offered in standard output voltages of 5V and 3.3V as well as in adjustable output regulator.
TO-263-5 (T)
TO-220-5 (U)
SPX
2700/01/02
2
1
3
45
SPX
2701/02
4321
5
Top View
Front View
PIN CONNECTIONS
Five Lead Package Pin Functions:
1) Error
2) Input
3) GND
4) Output
5) Shutdown
Adjust Shutdown
GND
Input
Output
APPLICATIONS
Cordless Telephones
•
Portable/ Palm Top / Notebook Computers
•
Portable Consumer Equipment
•
Portable Instrumentation
•
3
V
OUT
3V).
≤
SOT-223 (M3)
SPX2700
132
V
GND
IN
Top View
SMPS Post-Regulator
•
Voltage Reference
•
TO-220-3 (U)
SPX2700
123
V
GND
IN
Front View
V
OUT
IN -VOUT
TO-263-3 (T)
SPX2700
1
2
V
GND
IN
Top View
V
OUT
Rev. 10/25/00
Page 2
SPX2700/01/02
ABSOLUTE MAXIMUM RATINGS
Power Dissipation..........................................Internally Limited Input Supply Voltage Continuous ......................... +12V
Lead Temp. (Soldering, 10 Seconds) .............................. 260°C Transient................-20V to +60V
Feedback Input Voltage...................................... -1.5V to +30V Storage Temperature Range .........................-65° to +150°C
Shutdown Input Voltage..................................... -0.3V to +30V Operating Junction Temperature Range ..... -40°C to +125°C
Error Comparator Output ................................... -0.3V to +30V ESD Rating .....................................2KV Min
ELECTRICAL CHARACTERISTICS
Boldface
3.3V Version
Output Voltage
5V Version
Output Voltage
All Voltage Options
Output Voltage Temperature Coefficient Line Regulation (Note 3)
Load Regulation (Note 3) I
Dropout Voltage (Note 5) I
Ground Current
Current Limit V
Thermal Regulation 0.05 0.2 0.2 %/w
type apply over the entire operating temperature range. All other specifications are T
Parameter
Conditions
(Note 2)
-40°C≤TJ≤+125°C 1mA≤ I
≤
L
-40°C≤TJ≤+125°C 1mA≤ I
≤
L
(Note1) 6V≤ V
I
I
I
≤
IN
= 1 to 700
L
= 0.1 to 1mA
L
= 1mA
L
= 700mA
L
= 1mA
L
I
= 700mA
L
= 0 700
OUT
at V
500mA
700mA
30V (Note4)
= VO + 5V, IO = 700mA, CO = 10 µF, unless otherwise specified. Limits in
IN
= 25°C.
A
Typ. SPX2700/01/02A
Min Max
3.3
3.3
5.0
5.0
20
0.03 0.1
0.04 0.20
60
375
100
4.5 15
20
3.267
3.217
4.950
4.880
3.333
3.382
5.050
5.120
100
0.40
0.30
100
150
400
500
150
180
2
2.5
14
16
20
22
SPX2700/01/02
Min Max
3.234
3.185
4.900
4.870
0.20
100
150
3.366
3.415
5.100
5.130
150
0.80
0.30
0.50
150
400
500
180
2
2.5
14
16
20
22
700
800
800
Units
V
V
ppm/°C
%max
%max
mV
µA
mA
mA
Output Noise, 10Hz to 100kHz IL = 100mA
CL = 2.2µF C
= 33µF
L
400 200
1.0
0.60
Adjustable Versions Only
Reference Voltage Over Temperature
(Note 6)
1.235 1.210
1.200
1.185
1.260
1.270
1.285
Feedback Pin Bias Current 20 40
60
Reference Voltage Temperature
(Note 7) 50
Coefficient
Feedback Pin Bias Current
0.1
Temperature Coefficient
1.0
0.60
µV
Vrms
1.200
1.980
1.185
1.270
1.272
1.285
60
V
nA
80
ppm/°C
NA/°C
Rev. 10/25/00
Page 3
SPX2700/01/02
ELECTRICAL CHARACTERISTICS
Boldface
Error Comparator
Output Leakage Current
Output Low Voltage VIN = 4.5V
Upper Threshold Voltage (Note 8) 60 40
Lower Threshold Voltage (Note 8) 75
Hysteresis (Note 8) 15
Shutdown Input
Input Logic Voltage
Shutdown Pin Input Current VS = 2.4V
Regulator Output Current In Shutdown
Note 1: Note 2:
feedback tied to 5V tap and output tied to output sense (V
Note 3:
covered under the specification for thermal regulation.
Note 4
typical performance characteristics for line regulation versus temperature and load current.
Note 5:
very low values of programmed output voltage, the minimum input supply voltage of 2V ( 2.3V over temperature) must be taken into account.
Note 6: Note 7:
express these thresholds in terms of output voltage change, multiply by the error amplifier gain = V voltage of 5V, the Error output is guaranteed to go low when the output drops by 95 mV x 5V/1.235 = 384 mV. Thresholds remain constant as a percent of V V
OUT
Note 8: Note 9:
The thermal resistance of the 8-Pin DIP package is 105°C/W junction-to-ambient when soldered directly to a PC board. Junction-to-ambient thermal resistance for the SOIC (S) package is 160°C/W.
type apply over the entire operating temperature range. All other specifications are T
Parameter
Output or reference voltage temperature coefficients defined as the worst case voltage change divided by the total temperature range. Unless otherwise specified all limits are guaranteed for T
Regulation is measured at constant junction temperature, using pulse testing with a low duty cycle. Changes in output voltage due to heating effects are
: Line regulation for the SPX2700/01/02 is tested at 150°C for I
Dropout voltage is defined as the input to output differential at which the output voltage drops 100 mV below its nominal value measured at 1V differential at
V
V
≤
REF
Comparator thresholds are expressed in terms of a voltage differential at the feedback terminal below the nominal reference voltage measured at 6V input. To
is varied, with the dropout warning occurring at typically 5% below nominal, 7.5% guaranteed.
V
SHUTDOWN
The junction -to-ambient thermal resistance of the TO-92 package is 180°C/ W with 0.4” leads and 160°C/ W with 0.25” leads to a PC board.
Conditions Typ. SPX2700/01/02A
VOH = 30V 0.01 1.00
IOL = 400µA
Low (Regulator ON) High (Regulator OFF)
VS = 30V 3 10
≤ (Vin - 1V), 2.3 ≤Vin≤30V, 100µA≤I
OUT
≥ 2V, VIN ≤ 30V, V
=0, Feedback pin tied to 5V Tap.
OUT
UNREGULATED DC
+
at V
= VO + 5V, IO = 700mA, CO = 22 µF, unless otherwise specified. Limits in
IN
= 25°C
A
.
SPX2700/01/02
Min Max
2.00
150
25
30
2.0
50
450
20
= 25°C, VIN = 6V, IL = 100µA and CL = 1µF. Additional conditions for the 8-pin versions are
= 5V) and V
OUT
250 mA, T
≤
L
j
SHUTDOWN
= 1 mA. For IL = 100µA and TJ = 125°C, line regulation is guaranteed by design to 0.2%. See
L
T
≤
J
JMAX
≤ 0.8V.
.
OUT/VREF
250
400
95
140
0.7
100
600
750
15
= (R1 + R2)/R2. For example, at a programmed output
Min Max
1.00
40
25
2.0
90
FEEDBACK
5V @ 700mA
INPUT
OUTPUT
MAX
Units
µA
2.00
250
400
95
140
0.7 V
150
800
1000
25
OUT
mV
mV
mV
mV
µA
µA
as
FROM CMOS OR TTL
SHUTDOWN
+ _
ERROR AMPLIFIER
180k
60k
60 mV
+
1.23V
+
REFERENCE
+
_
ERROR DETECTION COMPARATOR
SPX2700/01/02 Block Diagram
SENSE
Ω
..
5V TAP
+
Ω
..
______
ERROR
GROUND
Ω
330k
µ
.. 1 F
TO CMOS OR TTL
..
Rev. 10/25/00
Page 4
SPX2700/01/02
APPLICATION HINTS EXTERNAL CAPACITORS
The stability of the SPX2700/01/02 requires a 10µF or greater capacitor between output and ground. Oscillation could occur without this capacitor. Most types of tantalum or aluminum electrolytic works fine here. For operations below -25°C solid tantalum is recommended since the many aluminum types have electrolytes that freeze at about -30°C. The ESR of about 5Ω or less and resonant frequency above 500 kHz are the most important parameters in the value of the capacitor. The capacitor value may be increased without limit. At lower values of output current, less output capacitance is required for stability. For the currents below 10mA the value of the capacitor can be reduced to 22µF and 0.15µF for 1mA. More output capacitance is needed for the 8-pin version at voltages below 5V since it runs the error amplifier at lower gain. At worst case 22µF or greater must be used for the condition of 750mA load at 1.23V output. The SPX2700/01/02, unlike other low dropout regulators will remain stable and in regulation with no load in addition to the internal voltage divider. This feature is especially important in applications like CMOS RAM keep-alive. When setting the output voltage of the SPX2700/01/02 version with external resistors, a minimum load of 5mA is recommended. If there is more than 10 inches of wire between the input and the AC filter capacitor or if a battery is used as the input then a 1µA tantalum or aluminum electrolytic capacitor should be placed from the input to the ground.
ERROR DETECTION COMPARATOR OUTPUT
4.75V
OUTPUT
VOLTAGE
_______
ERROR*
INPUT
VOLTAGE 1.3V
* See Application Info.
+
Figure 1. ERROR Output Timing
+
5.0V
_______
+
+
The Comparator produces a logic low output whenever the SPX2700/01/02 output falls out of regulation by more than around 5%. This is around 75mV offset divided by the 1.235 reference voltage. This trip level remains 5% below normal regardless of the programmed output voltage of the regulator. Figure 1 shows the timing diagram depicting the ERROR signal and the regulator output voltage as the SPX2700/01/02 input is ramped up and down. The ERROR signal becomes low at around 1.3V input, and goes
high around 5V input (input voltage at which Vout = 4.75 ). Since the SPX2700/01/02’s dropout voltage is load dependent, the input voltage trip point (around 5V) will vary with the load current. The output voltage trip point (approx. 4.75V) does not vary with load. The error comparator has an open-collector output, which requires an external pull-up resistor. Depending on the system requirements the resistor may be returned to 5V output or other supply voltage. In determining the value of this resistor, note that the output is rated to sink 250µA, this value adds to battery drain in a low battery condition. Suggested values range from 100K to 1MΩ. If the output is unused this resistor is not required.
PROGRAMMING THE OUTPUT VOLTAGE OF SPX2700/01/02
The SPX2700/01/02 may be programmed for any output voltage between its 1.235V reference and its 30V maximum rating . As seen in Figure 2, an external pair of resistors is required. Refer to the below equation for the programming of the output voltage:
V
OUT
= V
× (1 + R1\ R2)+ IFBR
REF
1
The V
is 1.235 and IFB is the feedback bias current, nominally -20
REF
nA. The minimum recommended load current of 1µA forces an upper limit of 1.2 MΩ on value of R2. If no load is presented the IFB produces an error of typically 2% in V at room temperature by trimming R choose the value of R
= 100k this reduces the error by 0.17% and
2
, which may be eliminated
OUT
. To improve the accuracy
1
increases the resistor program current by 12µA. Since the SPX2700/01/02 typically draws 100µA at no load with SHUTDOWN open-circuited this is a small price to pay
REDUCING OUTPUT NOISE
It may be an advantage to reduce the AC noise present at the output. One way is to reduce the regulator bandwidth by increasing the size of the output capacitor. This is the only way that noise can be reduced on the 3 lead SPX2700/01/02 but is relatively inefficient, as increasing the capacitor from 1µF to 220µF only decreases the noise from 430µV to 160µV
for a 100 kHz bandwidth at 5V output.
RMS
Noise could also be reduced fourfold by a bypass capacitor across R since it reduces the high frequency gain from 4 to unity. Pick
C
BYPASS
1 / 2πR
≅
× 200 Hz
1
or choose 0.01µF. When doing this, the output capacitor must be increased to 3.3µF to maintain stability. These changes reduce the output noise from 430µV to 100µV
for a 100 kHz bandwidth at
RMS
5V output. With the bypass capacitor added, noise no longer scales with output voltage so that improvements are more dramatic at higher output voltages.
SHUTDOWN
V
IN
GND
SPX2703
ADJ
V
OUT
Fig.2 Adjustable Voltage Regulator
,
1
Rev. 10/25/00
Page 5
SPX2700/01/02
TO-263-5L (T)
0.405 0.005
(10.287 ±
±
0.127)
±
0.067
(1.702 0.127)
0.005
±
0.055 (1.397)
±
0.356 0.005 ±
(9.042
0.032 0.003
(0.813
0.127)
0.600 0.025
(15.24
± ±
0.076)
± ±
0.635)
0.015
(0.381 0.074)
+
-
+
-
0.003
0.176 0.005±(4.470 0.127) ±
0.050 0.002
±
0.100 (2.540 0.254)
0° 8°
±
0.010
± ±
(1.270 0.051)
Rev. 10/25/00
Page 6
SPX2700/01/02
TO-263-3L (T)
±
0.405
0.005
±
(10.287 0.127)
0.055 (1.397)
0.176
0.050
±
±
0.005
0.002
±
0.356 0.005
±
(9.042 0.127)
0.600
(15.24
+
0.025
-
±
0.635)
±
0.100 0.010
±
0.254)
(2.540
+
0.103 BSC
(2.616)
0.050 (1.270)
+
0.032
0.001
­+
(0.813 0.025)
-
0.015
(0.381 0.074)
0.003
­+
-
0°
8°
(4.470 (1.270
±
0.127)
±
0.051)
Rev. 10/25/00
Page 7
SPX2700/01/02
TO-220-3L (U)
0.408 ± 0.013
(10.36 ± 0.33)
0.151D ± 0.002
(3.835 D ± 0.051)
0.110 ± 0.010
(2.794 ± 0.254)
0.250 ± 0.010
(6.350 ± 0.254)
0.340 ± 0.010
(8.636 ± 0.254)
0.540 ± 0.015
(13.720 ± 0.381)
0.150 MIN (3.81 MIN)
0.410
(10.41)
0.050 TYP (1.27 TYP)
0.200 ± 0.010
(5.080 ± 0.254)
0.100 ± 0.010
(2.540 ± 0.254)
0.032 ± 0.005
(0.813 ± 0.127)
0.180 ± 0.005
(4.572 ± 0.127)
7o Typ.
0.015 ± 0.010/-0.002
(0.381± 0.254/-0.051)
0.050 ± 0.002
(1.270 ± 0.051)
SEATING PLANE
1.020 ± 0.015
(25.910 ± 0.381)
0.015 ± 0.010/-0.015
(2.667± 0.254/-0.381)
Tapered 1
2 Sides
o
Rev. 10/25/00
Page 8
SPX2700/01/02
TO-220-5L (U)
+
0.150 D
0.400
(10.16
+
-
+
-
0.005
0.13)
+
0.108
0.005
(2.74
­+
-
2.74)
0.067 (1.70
+
0.005
­+
0.127)
-
0.268 REF (6.81 REF)
(3.81D
0.590
(14.99
0.547
(13.89
0.032 (0.81
0.268 REF
0.005
­+
0.13)
-
+
-
+
-
+
-
+
-
0.250 (6.35
+
0.005
-
+
0.13)
-
0.005
0.005)
0.005
0.13)
+
0.175
0.005
­+
(4.45
0.13)
-
+
0.050
0.005
-
+
(1.27
0.13)
-
+
0.005
-
+
0.13)
-
SEATING PLANE
1.137 REF
(28.88 REF)
7°
Typ.
+
0.105
0.005
­+
(2.67
0.13)
-
+
0.015
0.005
­+
(0.38
0.13)
-
Rev. 10/25/00
Page 9
SPX2700/01/02
SOT-223-3L (M3)
0.0905 NOM
0.181 NOM
0.0040
0.0008
0.124
0.116
0.264
0.248
0.033
0.025
0.146
0.130
0.041
0.033
0.146
0.130
0.295
0.264
°
16 10°C
16°C 10°C Max
°
16 10°C
C
0.014
0.010
C
Rev. 10/25/00
Page 10
SPX2700/01/02
ORDERING INFORMATION
Ordering No. Precision Output Voltage Packages
SPX2700M3-3.3 SPX2700M3-5.0 SPX2700AM3-3.3 SPX2700AM3-5.0 SPX2700T3-3.3 SPX2700T3-5.0 SPX2700AT3-3.3 SPX2700AT3-5.0 SPX2700T5-3.3 SPX2700T5-5.0 SPX2700AT5-3.3 SPX2700AT5-5.0 SPX2700U3-3.3 SPX2700U3-5.0 SPX2700AU3-3.3 SPX2700AU3-5.0 SPX2700U5-3.3 SPX2700U5-5.0 SPX2700AU5-3.3 SPX2700AU5-5.0 SPX2701T3-3.3 SPX2701T3-5.0 SPX2701AT3-3.3 SPX2701AT3-5.0 SPX2701T5-3.3 SPX2701T5-5.0 SPX2701AT5-3.3 SPX2701AT5-5.0 SPX2701U3-3.3 SPX2701U3-5.0 SPX2701AU3-3.3 SPX2701AU3-5.0 SPX2701U5-3.3 SPX2701U5-5.0 SPX2701AU5-3.3 SPX2701AU5-5.0 SPX2702T3 SPX2702AT3 SPX2702T5 SPX2702AT5 SPX2702U3 SPX2702AU3 SPX2702U5 SPX2702AU5
2% 3.3V 3 Lead TO-223 2% 5.0V 3 Lead TO-223 1% 3.3V 3 Lead TO-223 1% 5.0V 3 Lead TO-223 2% 3.3V 3 Lead TO-263 2% 5.0V 3 Lead TO-263 1% 3.3V 3 Lead TO-263 1% 5.0V 3 Lead TO-263 2% 3.3V 5 Lead TO-263 2% 5.0V 5 Lead TO-263 1% 3.3V 5 Lead TO-263 1% 5.0V 5 Lead TO-263 2% 3.3V 3 Lead TO-220 2% 5.0V 3 Lead TO-220 1% 3.3V 3 Lead TO-220 1% 5.0V 3 Lead TO-220 2% 3.3V 5 Lead TO-220 2% 5.0V 5 Lead TO-220 1% 3.3V 5 Lead TO-220 1% 5.0V 5 Lead TO-220 2% 3.3V 3 Lead TO-263 2% 5.0V 3 Lead TO-263 1% 3.3V 3 Lead TO-263 1% 5.0V 3 Lead TO-263 2% 3.3V 5 Lead TO-263 2% 5.0V 5 Lead TO-263 1% 3.3V 5 Lead TO-263 1% 5.0V 5 Lead TO-263 2% 3.3V 3 Lead TO-220 2% 5.0V 3 Lead TO-220 1% 3.3V 3 Lead TO-220 1% 5.0V 3 Lead TO-220 2% 3.3V 5 Lead TO-220 2% 5.0V 5 Lead TO-220 1% 3.0V 5 Lead TO-220 1% 5.0V 5 Lead TO-220 2% Adj 3 Lead TO-263 1% Adj 3 Lead TO-263 2% Adj 5 Lead TO-263 1% Adj 5 Lead TO-263 2% Adj 3 Lead TO-220 1% Adj 3 Lead TO-220 2% Adj 5 Lead TO-220 1% Adj 5 Lead TO-220
Rev. 10/25/00
Page 11
SPX2700/01/02
Corporation
SIGNAL PROCESSING EXCELLENCE
Sipex Corporation
Headquarters and Main Offices:
22 Linnell Circle Billerica, MA 01821 TEL: (978) 667-8700 FAX: (978) 670-9001 e-mail: sales@sipex.com
233 South Hillview Drive Milpitas, CA 95035 TEL: (408) 935-7600 FAX: (408) 934-7500
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 hereing; neither does it convey any license under its patent rights nor the rights of others.
Rev. 10/25/00
Loading...
Buy Points How it Works FAQ Contact Us Questions and Suggestions Privacy Policy Cookie Policy Terms of Use