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5962-9233601QXA の電気的特性と機能

5962-9233601QXAのメーカーはNational Semiconductorです、この部品の機能は「Adjustable Micropower Low-Dropout Voltage Regulators」です。


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部品番号 5962-9233601QXA
部品説明 Adjustable Micropower Low-Dropout Voltage Regulators
メーカ National Semiconductor
ロゴ National Semiconductor ロゴ 




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5962-9233601QXA Datasheet, 5962-9233601QXA PDF,ピン配置, 機能
May 1999
LP2952/LP2952A/LP2953/LP2953A
Adjustable Micropower Low-Dropout Voltage Regulators
General Description
The LP2952 and LP2953 are micropower voltage regulators
with very low quiescent current (130 µA typical at 1 mA load)
and very low dropout voltage (typ. 60 mV at light load and
470 mV at 250 mA load current). They are ideally suited for
battery-powered systems. Furthermore, the quiescent cur-
rent increases only slightly at dropout, which prolongs bat-
tery life.
The LP2952 and LP2953 retain all the desirable characteris-
tics of the LP2951, but offer increased output current, addi-
tional features, and an improved shutdown function.
The internal crowbar pulls the output down quickly when the
shutdown is activated.
The error flag goes low if the output voltage drops out of
regulation.
Reverse battery protection is provided.
The internal voltage reference is made available for external
use, providing a low-T.C. reference with very good line and
load regulation.
The parts are available in DIP and surface mount packages.
Features
n Output voltage adjusts from 1.23V to 29V
n Guaranteed 250 mA output current
n Extremely low quiescent current
n Low dropout voltage
n Extremely tight line and load regulation
n Very low temperature coefficient
n Current and thermal limiting
n Reverse battery protection
n 50 mA (typical) output pulldown crowbar
n 5V and 3.3V versions available
LP2953 Versions Only
n Auxiliary comparator included with CMOS/TTL
compatible output levels. Can be used for fault
detection, low input line detection, etc.
Applications
n High-efficiency linear regulator
n Regulator with under-voltage shutdown
n Low dropout battery-powered regulator
n Snap-ON/Snap-OFF regulator
Block Diagrams
LP2952
LP2953
DS011127-1
© 1999 National Semiconductor Corporation DS011127
DS011127-2
www.national.com

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5962-9233601QXA pdf, ピン配列
Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Storage Temperature Range
Operating Temperature Range
LP2952I, LP2953I, LP2952AI,
LP2953AI, LP2952I-3.3,
LP2953I-3.3, LP2952AI-3.3,
LP2953AI-3.3
LP2953AM
Lead Temp. (Soldering, 5 seconds)
Power Dissipation (Note 2)
−65˚C TA +150˚C
−40˚C TJ +125˚C
−55˚C TA +125˚C
260˚C
Internally Limited
Maximum Junction Temperature
LP2952I, LP2953I, LP2952AI,
LP2953AI, LP2952I-3.3,
LP2953I-3.3, LP2952AI-3.3,
LP2953AI-3.3
LP2953AM
Input Supply Voltage
Feedback Input Voltage (Note 3)
Comparator Input Voltage (Note 4)
Shutdown Input Voltage (Note 4)
Comparator Output Voltage (Note 4)
ESD Rating (Note 15)
+125˚C
+150˚C
−20V to +30V
−0.3V to +5V
−0.3V to +30V
−0.3V to +30V
−0.3V to +30V
2 kV
Electrical Characteristics Limits in standard typeface are for TJ = 25˚C, bold typeface applies over the full
operating temperature range. Limits are guaranteed by production testing or correlation techniques using standard Statistical
Quality Control (SQC) methods. Unless otherwise specified: VIN = VO(NOM) + 1V, IL = 1 mA, CL = 2.2 µF for 5V parts and
4.7µF for 3.3V parts. Feedback pin is tied to V Tap pin, Output pin is tied to Output Sense pin.
3.3V Versions
Symbol Parameter
VO Output Voltage
Conditions
1 mA IL 250 mA
Typical
3.3
3.3
LP2952AI-3.3, LP2953AI-3.3
Min Max
3.284
3.317
3.260
3.340
3.254
3.346
LP2952I-3.3, LP2953I-3.3
Min Max
3.267
3.333
3.234
3.366
3.221
3.379
Units
V
5V Versions
Symbol
Parameter
Conditions
Typical
VO Output Voltage
5.0
1 mA IL 250 mA
5.0
LP2952AI, LP2953AI,
LP2953AM (Note 17)
Min Max
4.975
5.025
4.940
5.060
4.930
5.070
LP2952I, LP2953I
Units
Min
4.950
4.900
4.880
Max
5.050
5.100
5.120
V
All Voltage Options
Electrical Characteristics
Limits in standard typeface are for TJ = 25˚C, bold typeface applies over the full operating temperature range. Limits are guar-
anteed by production testing or correlation techniques using standard Statistical Quality Control (SQC) methods. Unless other-
wise specified: VIN = VO(NOM) + 1V, IL = 1 mA, CL = 2.2 µF for 5V parts and 4.7µF for 3.3V parts. Feedback pin is tied to V
Tap pin, Output pin is tied to Output Sense pin.
Symbol
Parameter
Conditions
Typical
LP2952AI,
LP2953AI,
LP2952AI-3.3,
LP2953AI-3.3,
LP2953AM
(Notes 16, 17)
LP2952I, LP2953I, Units
LP2952I-3.3,
LP2953I-3.3
Min
Max
Min Max
REGULATOR
Output Voltage Temp. (Note 5)
Coefficient
20 100 150 ppm/˚C
Output Voltage Line
VIN = VO(NOM) + 1V to 30V
0.03
0.1
0.2 %
Regulation
0.2 0.4
Output Voltage Load IL = 1 mA to 250 mA
0.04
0.16
0.20 %
Regulation (Note 6)
IL = 0.1 mA to 1 mA
0.20
0.30
3 www.national.com


3Pages


5962-9233601QXA 電子部品, 半導体
Electrical Characteristics (Continued)
Exceeding the maximum allowable power dissipation will cause excessive die temperature, and the regulator will go into thermal shutdown. See APPLICATION
HINTS for additional information on heatsinking and thermal resistance.
Note 3: When used in dual-supply systems where the regulator load is returned to a negative supply, the output voltage must be diode-clamped to ground.
Note 4: May exceed the input supply voltage.
Note 5: Output or reference voltage temperature coefficient is defined as the worst case voltage change divided by the total temperature range.
Note 6: Load regulation is measured at constant junction temperature using low duty cycle pulse testing. Two separate tests are performed, one for the range of 100
µA to 1 mA and one for the 1 mA to 250 mA range. Changes in output voltage due to heating effects are covered by the thermal regulation specification.
Note 7: Dropout voltage is defined as the input to output differential at which the output voltage drops 100 mV below the value measured with a 1V differential. At
very low values of programmed output voltage, the input voltage minimum of 2V (2.3V over temperature) must be observed.
Note 8: Ground pin current is the regulator quiescent current. The total current drawn from the source is the sum of the ground pin current, output load current, and
current through the external resistive divider (if used).
Note 9: VSHUTDOWN 1.1V, VOUT = VO(NOM).
Note 10: Thermal regulation is the change in output voltage at a time T after a change in power dissipation, excluding load or line regulation effects. Specifications
are for a 200 mA load pulse at VIN = VO(NOM)+15V (3W pulse) for T = 10 ms.
Note 11: Connect a 0.1 µF capacitor from the output to the feedback pin.
Note 12: VREF VOUT (VIN − 1V), 2.3V VIN 30V, 100 µA IL 250 mA.
Note 13: Two separate tests are performed, one covering 2.5V VIN VO(NOM)+1V and the other test for VO(NOM)+1V VIN 30V.
Note 14: Comparator thresholds are expressed in terms of a voltage differential at the Feedback terminal below the nominal reference voltage measured at
VIN = VO(NOM) + 1V. To express these thresholds in terms of output voltage change, multiply by the Error amplifier gain, which is VOUT/VREF = (R1 + R2)/R2
(refer to Figure 4).
Note 15: Human body model, 200 pF discharged through 1.5 k.
Note 16: Drive Shutdown pin with TTL or CMOS-low level to shut regulator OFF, high level to turn regulator ON.
Note 17: A military RETS specification is available upon request. For more information on military products, please refer to the Mil-Aero web page at
http://www.national.com/appinfo/milaero/index.html.
Typical Performance Characteristics Unless otherwise specified: VIN = 6V, IL = 1 mA, CL = 2.2 µF,
VSD = 3V, TA = 25˚C, VOUT = 5V.
Quiescent Current
Quiescent Current
Ground Pin Current vs Load
DS011127-27
Ground Pin Current
Ground Pin Current
DS011127-28
Output Noise Voltage
DS011127-29
DS011127-30
www.national.com
DS011127-31
6
DS011127-32

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部品番号部品説明メーカ
5962-9233601QXA

Adjustable Micropower Low-Dropout Voltage Regulators

National Semiconductor
National Semiconductor


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