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LM4120 Datasheet(PDF) 4 Page - Texas Instruments

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Part # LM4120
Description  Precision Micropower Low Dropout Voltage Reference
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

LM4120 Datasheet(HTML) 4 Page - Texas Instruments

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LM4120
SNVS049D – FEBRUARY 2000 – REVISED JULY 2015
www.ti.com
6.3 Recommended Operating Conditions
over operating free-air temperature range (unless otherwise noted)
MIN
NOM
MAX
UNIT
Ambient temperature
–40
85
°C
Junction temperature
–40
125
°C
6.4 Thermal Information
LM4120
THERMAL METRIC(1)
DBV [SOT-23]
UNIT
5 PINS
RθJA
Junction-to-ambient thermal resistance
170.4
°C/W
RθJC(top)
Junction-to-case (top) thermal resistance
123.9
°C/W
RθJB
Junction-to-board thermal resistance
30.4
°C/W
ψJT
Junction-to-top characterization parameter
17.2
°C/W
ψJB
Junction-to-board characterization parameter
29.9
°C/W
(1)
For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application
report, SPRA953.
6.5 Electrical Characteristics
unless otherwise specified, VIN = 3.3 V, ILOAD = 0, COUT = 0.01 µF, TA = Tj = 25°C.
PARAMETER
TEST CONDITIONS
MIN (1)
TYP (2)
MAX (1)
UNIT
1.8 V, 2.048 V, AND 2.5 V
Output voltage initial
accuracy
LM4120A-1.800
±0.2%
LM4120A-2.048
VOUT
LM4120A-2.500
LM4120-1.800
LM4120-2.048
±0.5%
LM4120-2.500
TCVOUT/°C
Temperature coefficient
–40°C
≤ TA ≤ +125°C
14
50
ppm/°c
0.0007
0.008
ΔVOUT/ΔVIN
Line regulation
3.3 V
≤ VIN ≤ 12 V
%/V
–40°C
≤ TA ≤ 85°C
0.01
0.03
0.08
0 mA
≤ ILOAD ≤ 1 mA
–40°C
≤ TA ≤ 85°C
0.17
0.01
0.04
ΔVOUT/ΔILOAD
Load regulation
1 mA
≤ ILOAD ≤ 5 mA
%/mA
–40°C
≤ TA ≤ 85°C
0.1
–1 mA
≤ ILOAD ≤ 0 mA
0.04
0.12
–5 mA
≤ ILOAD ≤ −1 mA
0.01
45
65
ILOAD = 0 mA
–40°C
≤ TA ≤ 85°C
80
120
150
VIN−VOUT
Dropout voltage (3)
ILOAD = 1 mA
mV
–40°C
≤ TA ≤ 85°C
180
180
210
ILOAD = 5 mA
–40°C
≤ TA ≤ 85°C
250
(1)
Limits are 100% production tested at 25°C. Limits over the operating temperature range are ensured through correlation using Statistical
Quality Control (SQC) methods. The limits are used to calculate TI's Averaging Outgoing Quality Level (AOQL).
(2)
Typical numbers are at 25°C and represent the most likely parametric norm.
(3)
Dropout voltage is the differential voltage between VOUT and VIN at which VOUT changes ≤ 1% from VOUT at VIN = 3.3 V for 1.8 V, 2 V,
2.5 V, and VOUT + 1 V for others. For 1.8-V option, dropout voltage is not ensured over temperature. A parasitic diode exists between
input and output pins; it will conduct if VOUT is pulled to a higher voltage than VIN.
4
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