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PDF LP2967IBPX-2833 Data sheet ( Hoja de datos )
| Número de pieza | LP2967IBPX-2833 | |
| Descripción | Dual Micropower 150 mA Low-Dropout Regulator in micro SMD Package | |
| Fabricantes | National Semiconductor | |
| Logotipo |  |
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April 2003
LP2967
Dual Micropower 150 mA Low-Dropout Regulator in
micro SMD Package
General Description
The LP2967 is a 150 mA, dual fixed-output voltage regulator
designed to provide ultra low-dropout and low noise in bat-
tery powered applications.
Using an optimized VIP (Vertically Integrated PNP) process,
the LP2967 delivers unequalled performance in all specifi-
cations critical to battery powered designs:
Dropout Voltage: Typically 240 mV at 150 mA load, and
6 mV at 1 mA load for each output.
Ground Pin Current: Typically 1 mA at 150 mA load, and
200 µA at 1 mA load for each output.
Enhanced Stability: The LP2967 is stable with output ca-
pacitor ESR as low as 5 mΩ, which allows the use of ceramic
capacitors on the output.
Sleep Mode: Less than 2 µA quiescent current when SD
pins are pulled low.
Smallest Possible Size: micro SMD package uses absolute
minimum board space.
Precision Output: 1.25% tolerance.
Low Noise: By adding a 100 nF bypass capacitor, output
noise can be reduced to 30 µV (typical).
Multiple voltage options, from 1.8V to 5.0V, are available.
Consult factory for custom voltages.
Features
n Ultra low drop-out voltage
n Guaranteed 150mA output current, 300 mA peak
n Smallest possible size (micro SMD package)
n Requires minimum external components
n Stable with 2.2 µF tantalum or ceramic capacitor
n Output voltage accuracy ±1%
n < 2 µA quiescent current when shut down
n Wide supply voltage range (16V max.)
n Low ZOUT: 0.3Ω typical (10 Hz to 1 MHz)
n Over temperature/over current protection
n −40˚C to +125˚C junction temperature range
n Custom voltages available
Applications
n Cellular Phone
n Palmtop/Laptop Computer
n Personal Digital Assistance (PDA)
n Camcorder, Personal Stereo and Camera
Block Diagram
© 2003 National Semiconductor Corporation DS101142
10114201
www.national.com
1 page  
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
Lead Temp. ( IR reflow, 10 sec.)
Pad Temp. (IR reflow, 10 sec.)
Operating Junction Temp. Range
Power Dissipation (Note 4)
−65˚C to +150˚C
245˚C
245˚C
−40˚C to +125˚C
Internally Limited
ESD Rating (Note 2)
Input Supply Voltage (Survival)
Input Supply Voltage (Operating)
Shutdown Input Voltage (Survival)
Output Voltage (Survival) (Note 4)
IOUT (Survival)
Input-Output Voltage (Survival),
(Note 5)
1.5kV
−0.3V to +16V
2.1V to +16V
−0.3V to +16V
Short Circuit Protected
−0.3V to + 16V
Electrical Characteristics
Limits in standard typeface are for Tj = 25˚C, and limits in boldface type apply over the full operating junction temperature
range. Unless otherwise specified, VIN = VO(NOM) + 1V, IL = 1mA, CIN = 1µF,COUT = 4.7µF, VON/OFF = 1.6V.
Symbol
Parameter
Conditions
Min
Typ
Max
Units
Operating Specifications
VO
∆VO/∆VIN
∆VO/∆ILOAD
Output Voltage
Tolerance
Line Regulation
Load Regulation
ILOAD = 1mA
1mA < ILOAD < 150 mA
VO(NOM) + 1V < VIN < 16V
VIN = VO(NOM) + 1V (Note 6)
1mA < ILOAD < 150 mA
ILOAD = 1mA
−1.25
−3.0
−5
6
1.25
3.0
0.08
10
15
%
%/V
mV/V
Dropout Voltage
(VIN - VO) Min. (Note 7)
ILOAD = 50mA
100 125
180
mV
ILOAD = 150mA
240 290
425
Operating Currents
Both Regulators ON
IQ
IPEAK
Quiescent Current
Peak Output
Current
ILOAD (1 and 2) = 1mA
ILOAD (1 and 2) = 150mA
One Regulator OFF
ILOAD (1 and 2) = 1mA
ILOAD (1 and 2) = 150mA
Both Regulators OFF
(Shutdown)
VO < VOUT(NOM) − 5%
200
1700
300
5000
180
1000
250
2500
200 450
2
µA
mA
Control Inputs (SD1, SD2)
VIN (H)
VIN (L)
Regulator ON
Control Input
Voltage
Regulator OFF
Control Input
VO < VOUT(NOM) − 5%
1.6 1.4
0.300
0.8
V
V
Voltage
ION/OFF
Control Input
Current
Dynamic Characteristics
V(SD) = 0V
V(SD) = 5V
−2 µA
7
en
Output Noise
CBYPASS = 100nF, 300 to
Voltage
100kHz
30 µV rms
5 www.national.com
5 Page 
Typical performance Characteristics Unless otherwise specified: CIN = 1µF, COUT = 4.7µF, VON/OFF
= 1.6V, IL = 1mA, TA = 25˚C. (Continued)
LP2967-2.5V Turn-On Time (2nd Output OFF)
LP2967-2.5V Turn-On Time (2nd Output ON)
10114240
Output Impedance vs Frequency
10114241
Ripple Rejection vs Frequency
10114248
Ripple Rejection vs Frequency
10114249
Ripple Rejection vs Frequency
10114250
11
10114251
www.national.com
11 Page | ||
| Páginas | Total 17 Páginas | |
| PDF Descargar | [ Datasheet LP2967IBPX-2833.PDF ] | |
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