JL2951S2A中文资料
Original Creation Date: 08/01/95
Last Update Date: 05/19/98
Last Major Revision Date: 01/21/97
MJLP2951-X REV 1B1
MICROCIRCUIT DATA SHEET
ADJUSTABLE MICROPOWER VOLTAGE REGULATORS
General Description
The LP2951 is a micropower voltage regulator with very low quiescent curent (75 uA typ.)and very low dropout voltage (typ. 40 mV at light loads and 380 mV at 100mA). They are ideally suited for use in battery-powered systems. Furthermore, the quiescent current of the LP2951 increases only slightly in dropout, prolonging battery life.
The 8-Lead LP2951 is available in plastic, ceramic dual-in-line, or metal can packages and offers additional system functions.
One such feature is an error flag output which warns of a low output voltage, often due to falling batteries on the input. It may be used for a power-on reset. A second feature is the logic-compatible shutdown input which enables the regulator to be switched on and off.Also, the part may be pin-strapped for a 5V output or programmed from 1.24V to 29V with an external pair of resistors.
Careful design of the LP2951 has minimized all contributions to the error budget. This includes a tight initial tolerance (.5% typ.), extremely good load and line regulation (.05% typ.) and a very low output voltage temperature coefficient, making the part useful as a low-power voltage reference.
NS Part Numbers
JL2951BGA*JL2951BPA**JL2951S2A***JL2951SGA****JL2951SPA*****
Industry Part Number
LP2951
Prime Die
LP2951
Controlling Document
See Features Page REV C
Processing
MIL-STD-883, Method 5004
Quality Conformance Inspection
MIL-STD-883, Method 5005
Subgrp Description Temp ( C)o 1
Static tests at +252Static tests at +1253Static tests at -554Dynamic tests at +255Dynamic tests at +1256Dynamic tests at -557Functional tests at +258A Functional tests at +1258B Functional tests at -559Switching tests at +2510Switching tests at +12511
Switching tests at
-55
MICROCIRCUIT DATA SHEET MJLP2951-X REV 1B1
Features
- SMD : 5962-3870501BGA*, BPA**, S2A***, SGA****, SPA*****.
MICROCIRCUIT DATA SHEET MJLP2951-X REV 1B1
(Absolute Maximum Ratings)
(Note 1)
Power Dissipation
(Note 2)
METAL CAN
675mW at +25 C
CERDIP
1.0W at +25 C
LCC
1.25W at +25 C
CERAMIC SOIC
1.0W at +25 C
Lead Temperature
(Soldering, 10 seconds)
260 C
Storage Temperature Range
-65 C to +150 C
Operating Junction Temp Range
-55 C to +160 C
LP2951
Input Supply Voltage
-0.3 to +30V
Feedback Input Voltage
(Note 3, 4)
-1.5 to +30V
Shutdown Input Voltage
(Note 3)
-0.3 to +30V
Error Comparator Out. Voltage
(Note 3)
-0.3 to +30V
Thermal Resistance
ThetaJA
163 C/W
METAL CAN (Still Air @ 0.5W)
(500LF/Min Air flow @ 0.5W)
95 C/W
CERDIP (Still Air @ 0.5W)
131 C/W
75 C/W
(500LF/Min Air flow @ 0.5W)
LCC (Still Air @ 0.5W)
95 C/W
(500LF/Min Air flow @ 0.5W)
66 C/W
215 C/W
CERAMIC SOIC (Still Air @ 0.5W)
(500LF/Min Air flow @ 0.5W)
130 C/W
ThetaJC
METAL CAN
51 C/W
CERDIP
21 C/W
LCC
24 C/W
CERAMIC SOIC
24 C/W
Package Weight
(Typical)
TBD
ESD Rating
500V
Note 1:Absolute Maximum Ratings indicate limits beyond which damage to the device may occur.
Operating Ratings indicate conditions for which the device is functional, but do not
guarantee specific performance limits. For guaranteed specifications and test
conditions, see the Electrical Characteristics. The guaranteed specifications apply
only for the test conditions listed. Some performance characteristics may degrade
when the device is not operated under the listed test conditions.
Note 2:The maximum power dissipation msut be derated at elevated temperatures and is
dictated by Tjmax (maximum junction temperature), ThetaJA (package junction to
ambient thermal resistance), and TA (ambient temperature). The maximum allowable
power dissipation at any temperature is Pdmax = (Tjmax - TA)/ThetaJA or the number
given in the Absolute Maximum Ratings, whichever is lower.
Note 3:May exceed input supply voltage.
Note 4:When used in dual-supply systems where the output terminal sees loads returned to a negative supply, the output voltage should be diode-clamped to ground.
MJLP2951-X REV 1B1MICROCIRCUIT DATA SHEET
Electrical Characteristics
DC PARAMETERS
(The following conditions apply to all the following parameters, unless otherwise specified.)
DC:Vout = 5V (Nominal), Cload = 3.3uF, Vsd = 0.6V, Vin = 6V, Il = -100uA
SYMBOL PARAMETER CONDITIONS NOTES PIN-
NAME MIN MAX UNIT
SUB-GROUPS
Vo Output Voltage Vin = 6V, Il = -100uA 4.975 5.025V1
4.94
5.06V2, 3 Voline Line Regulation6V < Vin < 30V, Il = -1mA-55mV1
6V < Vin < 30V, Il = -1mA-2525mV2, 3 Voload Load Regulation-100uA < Il < -100mA, Vin = 6V-55mV1
-100uA < Il < -100mA, Vin = 6V-2525mV2, 3 Vd Dropout Voltage Il = -100mA450mV1
600mV2, 3
Il = -100uA80mV1
150mV2, 3 Ig Ground Current Il = -100mA, Vin = 6V12mA1
14mA2, 3
Il = -100uA, Vin = 6V120uA1
140uA2, 3
Il = -100uA, Vout = 15V, Vin = 30V120uA1
140uA2, 3
Il = -100uA, Vin = 30V, Vout = 15V15mA1
20mA2, 3
Igdiff Ground Current
Change 6V < Vin < 30V, Il = -100uA-3030uA1
6V < Vin < 30V, Il = -100uA-5050uA2, 3
Igdo Dropout Ground
Current Vin = 4.5V, Il = -100uA170uA1
200uA2, 3
Vlt Error Comparator
Lower Threshold
Voltage Vin = 6V, Il = -100uA100.8mV1, 2,
3
Vut Error Comparator
Upper Threshold
Voltage Vin = 6V, Il = -100uA1230mV1, 2,
3
Vrth Thermal
Regulation
Vin = 30V, Il = -50mA, 2mS < T < 10mS-12.512.5mV1
Isc Current Limit Vout = 0V, Vin = 6V200mA1
220mA2, 3
MJLP2951-X REV 1B1MICROCIRCUIT DATA SHEET
Electrical Characteristics
DC PARAMETERS(Continued)
(The following conditions apply to all the following parameters, unless otherwise specified.)
DC:Vout = 5V (Nominal), Cload = 3.3uF, Vsd = 0.6V, Vin = 6V, Il = -100uA
SYMBOL PARAMETER CONDITIONS NOTES PIN-
NAME MIN MAX UNIT
SUB-GROUPS
Igsc Ground Current At
Current Limit Vout = 0V, Vin = 6V20mA1
25mA2, 3
Vref Reference Voltage 1.22 1.25V1
1.20 1.26V2, 3
Vrline Reference Voltage
Line Regulation 2.3V < Vin < 30V-1.9 1.9mV1
2.3V < Vin < 30V-1010mV2, 3
Vrload Reference Voltage
Output Regulation 1.2V < Vout < 29V, Vin = 30V-1.2 1.2mV1
1.2V < Vout < 29V, Vin = 30V-55mV2, 3
Ifb Feedback Pin Bias
Current 40nA1
60nA2, 3
Ioh Error Comparator
Output Leakage
Current Vo = 30V1uA1
2uA2, 3
Vol Error Comparator
Output Low
Voltage Vin = 4.5V, Vsd = 2V250mV1
400mV2, 3
Isd Shutdown Pin
Input Current Vsd = 2.4V50uA1
100uA2, 3 Vsd = 30V600uA1
750uA2, 3
Vsdl Shutdown Input
Logic Voltage (LOW)10.6V1, 2,
3
Vsdh Shutdown Input
Logic Voltage (HIGH)12V1, 2,
3
Ilkg Regular Output
Bias Current In
Shutdown Vsd = 2V, Vin = 30V, Il = 0mA-1010uA1
-2020uA2, 3
AC PARAMETERS
(The following conditions apply to all the following parameters, unless otherwise specified.)
AC:Vin = 6V, Cload = 3.3uF, Vsd = 0.6V
Rr Ripple Rejection f = 120Hz, Vin = 0.1Vrms50dB4 Vnoise Output Noise C1 = 1uF600uVrms7
C1 = 3.3uF250uVrms7
MJLP2951-X REV 1B1MICROCIRCUIT DATA SHEET
Electrical Characteristics
DC PARAMETERS: DRIFT VALUES
(The following conditions apply to all the following parameters, unless otherwise specified.)
DC:Vout = 5V (Nominal), Cload = 3.3uF, Vsd = 0.6V, Vin = 6V, Il = -100uA. "Delta calculations performed on JAN S and QMLV devices at group B, subgroup 5 ONLY."
SYMBOL PARAMETER CONDITIONS NOTES PIN-
NAME MIN MAX UNIT
SUB-GROUPS
Ig Ground Current Il = -100uA, Vin = 6V-6.5 6.5uA1 Vref Reference Voltage-0.005
5
0.0055V1
Note 1:Parameter tested go-no-go only.
MICROCIRCUIT DATA SHEET MJLP2951-X REV 1B1
Graphics and Diagrams
GRAPHICS#DESCRIPTION
05810HRA2METAL CAN (H), TO-99, 8LD, .200 DIA P.C. (B/I CKT)
06059HRA2CERDIP (J), 8 LEAD (B/I CKT)
06146HRA2LCC (E), TYPE C, 20 TERMINAL(B/I CKT)
06341HRA1CERPACK (W), 10 LEAD (B/I CKT)
E20ARE LCC (E), TYPE C, 20 TERMINAL(P/P DWG)
H08CRF METAL CAN (H), TO-99, 8LD, .200 DIA P.C. (P/P DWG)
J08ARL CERDIP (J), 8 LEAD (P/P DWG)
P000205A METAL CAN (H), 8 LEAD (PINOUT)
P000206A CERDIP (J), 8 LEAD (PINOUT)
P000251B LCC (E), 20 LEAD (PINOUT)
P000374A CERAMIC SOIC (WG), 10 LEAD (PINOUT)
WG10ARC CERAMIC SOIC (WG), 10 LEAD (P/P DWG)
See attached graphics following this page.
N
N
N
MIL/AEROSPACE OPERATIONS 2900 SEMICONDUCTOR DRIVE SANTA CLARA, CA 95050
4 185678 14
9 10 11 12 13
17 16 153 2 1 20 19
N/C SHUTDOWN
N/C OUTPUT N/C
INPUT N/C
FEEDBACK N/C 5V TAP N/C
ERROR GND N/C
SENSE LP2951E 20 - LEAD LCC
CONNECTION DIAGRAM
TOP VIEW P000251B
N/C
N/C N/C
N/C N/C
N
MIL/AEROSPACE OPERATIONS 2900 SEMICONDUCTOR DRIVE SANTA CLARA, CA 95050
1 10
2 9
3 8
4 7
5 6
OUTPUT SENSE SHUTDOWN
GND N/C
N/C
ERROR VTAP FEEDBACK 10 - LEAD CERAMIC SOIC TOP VIEW CONNECTION DIAGRAM
P000374A
INPUT LP2951WG
MICROCIRCUIT DATA SHEET MJLP2951-X REV 1B1
Revision History
Rev ECN #Rel Date Originator Changes
1B1M000286705/19/98Barbara Lopez Update MDS: MJLP2951-X Rev. 1A0 to MJLP2951-X Rev.
1B1. Updated SMD number to add suffixes. Updated NSID
to add astericks associated with SMD suffix. Updated
power dissipation, lead temperature, junction
temperature, thermal resistance and ESD rating.
Changed note 1 to Absolute note, updated note 2 to
power dissipation note. Added graphics for all
packages. Added Package Weights.