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LP2951-33QDRGRQ1 Datasheet(PDF) 4 Page - Texas Instruments

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Part # LP2951-33QDRGRQ1
Description  Adjustable Micropower Voltage Regulators With Shutdown
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

LP2951-33QDRGRQ1 Datasheet(HTML) 4 Page - Texas Instruments

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LP2951-33-Q1, LP2951-50-Q1
SLVSAW6E – JUNE 2011 – REVISED NOVEMBER 2014
www.ti.com
6.3 Recommended Operating Conditions
MIN
NOM
MAX
UNIT
VIN
Supply input voltage
See (1)
30
V
TA
Operating temperature
–40
125
°C
(1)
Minimum VIN is the greater of:
(a) 2 V (25°C), 2.3 V (over temperature), or
(b) VOUT(MAX) + Dropout (Max) at rated IL
6.4 Thermal Information
LP2951-30-Q1,
LP2951-50-Q1
LP2951-50-Q1
THERMAL METRIC
UNIT
DRG
D
8 PINS
8 PINS
RθJA
Junction-to-ambient thermal resistance
55.7
121.6
RθJC(top)
Junction-to-case (top) thermal resistance
66.5
69.8
RθJB
Junction-to-board thermal resistance
30.2
61.9
°C/W
ψJT
Junction-to-top characterization parameter
1.1
22.2
ψJB
Junction-to-board characterization parameter
30.4
61.4
RθJC(bot)
Junction-to-case (bottom) thermal resistance
10
n/a
6.5 Electrical Characteristics
VIN = VOUT (nominal) + 1 V, IL = 100 μA, CL = 1 μF (5-V versions) or CL = 2.2 μF (3.3-V versions),
8-pin version: FEEDBACK tied to VTAP, OUTPUT tied to SENSE, VSHUTDOWN ≤ 0.7 V
PARAMETER
TEST CONDITIONS
TA
MIN
TYP
MAX
UNIT
3.3-V VERSION (LP2951-33-Q1)
25°C
3.267
3.3
3.333
VOUT
Output voltage
IL = 100 μA
V
–40°C to 125°C
3.234
3.3
3.366
5-V VERSION (LP2951-50-Q1)
25°C
4.950
5
5.050
VOUT
Output voltage
IL = 100 μA
V
–40°C to 125°C
4.900
5
5.100
ALL VOLTAGE OPTIONS
Output voltage temperature
IL = 100 μA
–40°C to 125°C
20
100
ppm/°C
coefficient(1)
25°C
0.03
0.2
Line regulation(2)
VIN = [VOUT(NOM) + 1 V] to 30 V
%/V
–40°C to 125°C
0.4
25°C
0.04%
0.2%
Load regulation(2)
IL = 100 μA to 100 mA
–40°C to 125°C
0.3%
25°C
50
80
IL = 100 μA
–40°C to 125°C
150
VIN – VOUT
Dropout voltage(3)
mV
25°C
380
450
IL = 100 mA
–40°C to 125°C
600
25°C
75
120
IL = 100 μA
μA
–40°C to 125°C
140
IGND
GND current
25°C
8
12
IL = 100 mA
mA
–40°C to 125°C
14
25°C
110
170
VIN = VOUT(NOM) – 0.5 V,
Dropout ground current
μA
IL = 100 μA
–40°C to 125°C
200
25°C
160
200
Current limit
VOUT = 0 V
mA
–40°C to 125°C
220
(1)
Output or reference voltage temperature coefficient is defined as the worst-case voltage change divided by the total temperature range.
(2)
Regulation is measured at constant junction temperature, using pulse testing with a low duty cycle. Changes in output voltage due to
heating effects are covered under the specification for thermal regulation.
(3)
Dropout voltage is defined as the input-to-output differential at which the output voltage drops 100 mV, below the value measured at 1-V
differential. The minimum input supply voltage of 2 V (2.3 V over temperature) must be observed.
4
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Copyright © 2011–2014, Texas Instruments Incorporated
Product Folder Links: LP2951-33-Q1 LP2951-50-Q1


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