LP2951ACDM-3.0 ON Semiconductor, LP2951ACDM-3.0 Datasheet

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LP2951ACDM-3.0

Manufacturer Part Number
LP2951ACDM-3.0
Description
Micropower Voltage Regulators
Manufacturer
ON Semiconductor
Datasheet

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Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LP2951ACDM-3.0R2
Manufacturer:
MOTOROLA/摩托罗拉
Quantity:
20 000
LP2950
Micropower Voltage
Regulators
specifically designed to maintain proper regulation with an extremely
low input–to–output voltage differential. These devices feature a very
low quiescent bias current of 75 A and are capable of supplying
output currents in excess of 100 mA. Internal current and thermal
limiting protection is provided.
Output that can be used to signal external circuitry of an out of
regulation condition, or as a microprocessor power–on reset. The
second feature allows the output voltage to be preset to 5.0 V, 3.3 V or
3.0 V output (depending on the version) or programmed from 1.25 V
to 29 V. It consists of a pinned out resistor divider along with direct
access to the Error Amplifier feedback input. The third feature is a
Shutdown input that allows a logic level signal to turn–off or turn–on
the regulator output.
specifications, these devices are ideally suited for battery powered
computer, consumer, and industrial equipment where an extension of
useful battery life is desirable. The LP2950 is available in the three
pin case 29 and DPAK packages, and the LP2951 is available in the
eight pin dual–in–line, SO–8 and Micro–8 surface mount packages.
The ‘A’ suffix devices feature an initial output voltage tolerance
LP2950 and LP2951 Features:
LP2951 Additional Features:
October, 1999 – Rev. 5
0.5%.
The LP2950 and LP2951 are micropower voltage regulators that are
The LP2951 has three additional features. The first is the Error
Due to the low input–to–output voltage differential and bias current
380 mV at 100 mA
Low Quiescent Bias Current of 75 A
Low Input–to–Output Voltage Differential of 50 mV at 100 A and
5.0 V, 3.3 V or 3.0 V 0.5% Allows Use as a Regulator or Reference
Extremely Tight Line and Load Regulation
Requires Only a 1.0 F Output Capacitor for Stability
Internal Current and Thermal Limiting
Error Output Signals an Out of Regulation Condition
Output Programmable from 1.25 V to 29 V
Logic Level Shutdown Input
Semiconductor Components Industries, LLC, 1999
(See Following Page for Device Information.)
1
See detailed ordering and shipping information in the package
dimensions section on page 13 of this data sheet.
CASE 369A
DT SUFFIX
Z SUFFIX
Shutdown
CASE 29
case outline drawing) is connected to Pin 2.
TO–92
DPAK
Heatsink surface (shown as terminal 4 in
CASE 846A
DM SUFFIX
ORDERING INFORMATION
CASE 751
CASE 626
Output
D SUFFIX
N SUFFIX
Sense
Micro–8
Gnd
SO–8
PIN CONNECTIONS
PIN CONNECTIONS
http://onsemi.com
1
(Top View)
1
2
3
4
2
(Top View)
1
3
2
3
Publication Order Number:
Pin: 1. Input
1
8
8
8
7
6
5
3
8
2. Ground
3. Output
Pin: 1. Output
Input
Feedback
V O Tap
Error Output
1
1
1
2. Ground
3. Input
LP2950/D

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LP2951ACDM-3.0 Summary of contents

Page 1

LP2950 Micropower Voltage Regulators The LP2950 and LP2951 are micropower voltage regulators that are specifically designed to maintain proper regulation with an extremely low input–to–output voltage differential. These devices feature a very low quiescent bias current and ...

Page 2

... This device contains 34 active transistors. http://onsemi.com 2 Operating Junction Operating Junction Temperature Range Adjustable Not –40 to +125 C Available Not –40 to +125 C Available LP2951CD –40 to +125 C LP2951ACD LP2951CDM –40 to +125 C LP2951ACDM LP2951CN –40 to +125 C LP2951ACN 5.0 V/100 mA 5.0 V/100 mA 330 k To CMOS/TTL ...

Page 3

MAXIMUM RATINGS ( unless otherwise noted.) Rating Input Voltage Power Dissipation and Thermal Characteristics Maximum Power Dissipation Case 751(SO–8) D Suffix Thermal Resistance, Junction–to–Ambient Thermal Resistance, Junction–to–Case Case 369A (DPAK) DT Suffix [Note 1] Thermal Resistance, ...

Page 4

ELECTRICAL CHARACTERISTICS (continued) otherwise noted.) Characteristic Line Regulation ( O(nom) +1 [Note 2] LP2950C–XX/LP2951C/LP2951C–XX LP2950AC–XX/LP2951AC/LP2951AC–XX Load Regulation ( 100 A to 100 mA) LP2950C–XX/LP2951C/LP2951C–XX LP2950AC–XX/LP2951AC/LP2951AC–XX Dropout Voltage 100 ...

Page 5

Dropout Voltage – The input/output voltage differential at which the regulator output no longer maintains regulation against further reductions in input voltage. Measured when the output drops 100 mV below its nominal value (which is measured at 1.0 V differential), ...

Page 6

Figure 5. Dropout Voltage versus Output Current 400 350 300 250 200 150 100 50 0 0.1 1 OUTPUT CURRENT (mA) Figure 7. Error Comparator Output 5.0 LP2951C ...

Page 7

Figure 11. Ripple Rejection out = 5 1.0 1 100 f, ...

Page 8

Introduction The LP2950/LP2951 regulators are designed with internal current limiting and thermal shutdown making them user–friendly. Typical application circuits for the LP2950 and LP2951 are shown in Figures 17 through 25. These regulators are not internally compensated and thus require ...

Page 9

Figure 16. Adjustable Regulator V in 100 Error V out Error Output 2 NC SNS R1 Shutdown Input Gnd The complete equation ...

Page 10

Figure 18. Lithium Ion Battery Cell Charger Unregulated Input 6 Vdc 1N4001 1 5 Error V out 330 pF SNS LP2951CN 0 Gnd FB ...

Page 11

LP2950 Figure 22. Regulator with Early Warning and Auxiliary Output + out Error D1 2 SNS LP2951CN Gnd 2.7 ...

Page 12

Figure 24. Open Circuit Detector for 4 Current Loop 0.1 F 1N4001 Figure 25. Low Battery Disconnect 31.6 k 100 k 2N3906 MC34164P–5 3 Figure 26. DPAK ...

Page 13

... LP2951ACD–3.3 LP2951ACD–3.3R2 LP2951CD LP2951CDR2 LP2951ACD LP2951ACDR2 LP2951CDM–3.0R2 LP2951ACDM–3.0R2 LP2951CDM–3.3R2 LP2951ACDM–3.3R2 LP2951CDMR2 LP2951ACDMR2 LP2951CN–3.0 LP2951ACN–3.0 LP2951CN–3.3 LP2951ACN–3.3 LP2951CN LP2951ACN LP2950 ORDERING INFORMATION Package TO–92 2000 units / Tape & Reel TO– ...

Page 14

SEATING K PLANE –T– 0.13 (0.005) ...

Page 15

PACKAGE DIMENSIONS 8 5 –B– –A– NOTE 2 C –T– N SEATING PLANE 0.13 (0.005 0. SEATING PLANE ...

Page 16

... ASIA/PACIFIC: LDC for ON Semiconductor – Asia Support Phone: 303–675–2121 (Tue–Fri 9:00am to 1:00pm, Hong Kong Time) Email: ONlit–asia@hibbertco.com JAPAN: ON Semiconductor, Japan Customer Focus Center 4–32–1 Nishi–Gotanda, Shinagawa–ku, Tokyo, Japan 141–8549 Phone: 81–3–5487–8345 Email: r14153@onsemi ...

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