Datasheet

Electrical Characteristics
LM4128-4.1 (V
OUT
= 4.096V) Limits in standard type are for T
J
= 25°C only, and limits in boldface type apply
over the junction temperature (T
J
) range of -40°C to +125°C unless otherwise specified. Minimum and Maximum limits are
guaranteed through test, design, or statistical correlation. Typical values represent the most likely parametric norm at T
J
= 25°C,
and are provided for reference purposes only. Unless otherwise specified V
IN
= 5V and I
LOAD
= 0A.
Symbol Parameter Conditions Min
(Note 4)
Typ
(Note 5)
Max
(Note 4)
Unit
V
REF
Output Voltage Initial Accuracy
LM4128A-4.1 (A Grade - 0.1%) -0.1 +0.1 %
LM4128B-4.1 (B Grade - 0.2%) -0.2 +0.2
LM4128C-4.1 (C Grade - 0.5%) -0.5 +0.5
LM4128D-4.1 (D Grade - 1.0%) -1.0 +1.0
TCV
REF
/ °C (Note
6)
Temperature Coefficient LM4128A-4.1 75
ppm / °C
LM4128B-4.1 75
LM4128C-4.1 100
LM4128D-4.1 100
I
Q
Supply Current 60 100 µA
I
Q_SD
Supply Current in Shutdown EN = 0V 3 7 µA
ΔV
REF
/ΔV
IN
Line Regulation
V
REF
+ 400 mV ≤ V
IN
≤ 5.5V
100 ppm / V
ΔV
REF
/ΔI
LOAD
Load Regulation
0 mA ≤ I
LOAD
≤ 20 mA
25 120 ppm / mA
ΔV
REF
Long Term Stability (Note 7) 1000 Hrs 50 ppm
Thermal Hysteresis (Note 8)
-40°C ≤ T
J
≤ +125°C
75
V
IN
- V
REF
Dropout Voltage (Note 9) I
LOAD
= 10 mA 175 400 mV
V
N
Output Noise Voltage 0.1 Hz to 10 Hz 350 µV
PP
I
SC
Short Circuit Current 75 mA
V
IL
Enable Pin Maximum Low Input Level 35 %V
V
IH
Enable Pin Minimum High Input Level 65 %V
Note 1: Absolute Maximum Ratings indicate limits beyond which damage may occur to the device. Operating Ratings indicate conditions for which the device is
intended to be functional, but do not guarantee specific performance limits. For guaranteed specifications, see Electrical Characteristics.
Note 2: Without PCB copper enhancements. The maximum power dissipation must be de-rated at elevated temperatures and is limited by T
JMAX
(maximum
junction temperature), θ
J-A
(junction to ambient thermal resistance) and T
A
(ambient temperature). The maximum power dissipation at any temperature is:
P
DissMAX
= (T
JMAX
- T
A
) /θ
J-A
up to the value listed in the Absolute Maximum Ratings. θ
J-A
for SOT23-5 package is 220°C/W, T
JMAX
= 125°C.
Note 3: The human body model is a 100 pF capacitor discharged through a 1.5 kΩ resistor into each pin.
Note 4: Limits are 100% production tested at 25°C. Limits over the operating temperature range are guaranteed through correlation using Statistical Quality
Control.
Note 5: Typical numbers are at 25°C and represent the most likely parametric norm.
Note 6: Temperature coefficient is measured by the "Box" method; i.e., the maximum ΔV
REF
is divided by the maximum ΔT.
Note 7: Long term stability is V
REF
@25°C measured during 1000 hrs.
Note 8: Thermal hysteresis is defined as the change in +25°C output voltage before and after cycling the device from (-40°C to 125°C).
Note 9: Dropout voltage is defined as the minimum input to output differential at which the output voltage drops by 0.5% below the value measured with a 5V
input.
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LM4128/LM4128Q