LP2951-50QDRGRQ1 Datasheet, PDF (3/24 Pages) Texas Instruments – ADJUSTABLE MICROPOWER VOLTAGE REGULATORS WITH SHUTDOWN

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LP2951-33-Q1
LP2951-50-Q1
SLVSAW6D – JUNE 2011 – REVISED APRIL 2013
RECOMMENDED OPERATING CONDITIONS
V_IN
Supply input voltage
T_A
Operating temperature
(1) Minimum V_IN is the greater of:
(a) 2 V (25°C), 2.3 V (over temperature), or
(b) V_OUT(MAX) + Dropout (Max) at rated I_L
THERMAL INFORMATION
THERMAL METRIC
θ_JA
θ_JCtop
θ_JB
ψ_JT
ψ_JB
θ_JCbot
Junction-to-ambient thermal resistance
Junction-to-case (top) thermal resistance
Junction-to-board thermal resistance
Junction-to-top characterization parameter
Junction-to-board characterization parameter
Junction-to-case (bottom) thermal resistance
MIN
See ⁽¹⁾
–40
MAX
30
125
UNIT
V
°C
LP2951-xx-Q1
DRG 8 PINS
55.7
66.5
30.2
1.1
30.4
10
UNIT
°C/W
ELECTRICAL CHARACTERISTICS
V_IN = V_OUT (nominal) + 1 V, I_L = 100 μA, C_L = 1 μF (5-V versions) or C_L = 2.2 μF (3.3-V versions),
8-pin version: FEEDBACK tied to V_TAP, OUTPUT tied to SENSE, V_SHUTDOWN ≤ 0.7 V
PARAMETER
TEST CONDITIONS
T_A
MIN
3.3-V VERSION (LP2951-33)
V_OUT
Output voltage
I_L = 100 μA
25°C
–40°C to 125°C
3.267
3.234
5-V VERSION (LP2951-50)
V_OUT
Output voltage
I_L = 100 μA
25°C
–40°C to 125°C
4.950
4.900
ALL VOLTAGE OPTIONS
Output voltage temperature
coefficient ⁽¹⁾
I_L = 100 μA
–40°C to 125°C
Line regulation⁽²⁾
V_IN = [V_OUT(NOM) + 1 V] to 30 V
25°C
–40°C to 125°C
Load regulation⁽²⁾
I_L = 100 μA to 100 mA
25°C
–40°C to 125°C
V_IN – V_OUT Dropout voltage⁽³⁾
I_L = 100 μA
I_L = 100 mA
25°C
–40°C to 125°C
25°C
–40°C to 125°C
I_GND
GND current
I_L = 100 μA
I_L = 100 mA
25°C
–40°C to 125°C
25°C
–40°C to 125°C
Dropout ground current
V_IN = V_OUT(NOM) – 0.5 V,
I_L = 100 μA
25°C
–40°C to 125°C
Current limit
V_OUT = 0 V
25°C
–40°C to 125°C
TYP
MAX UNIT
3.3 3.333
V
3.3 3.366
5 5.050
V
5 5.100
20
100 ppm/°C
0.03
0.2
%/V
0.4
0.04
0.2
%
0.3
50
80
150
mV
380
450
600
75
120
μA
140
8
12
mA
14
110
170
μA
200
160
200
mA
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.
Copyright © 2011–2013, Texas Instruments Incorporated
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