Datasheet

LM3420
SNVS116D –MAY 1998–REVISED MAY 2013 www.ti.com
LM3420-8.2
ELECTRICAL CHARACTERISTICS
Specifications with standard type face are for T
J
= 25°C, and those with boldface type apply over full Operating
Temperature Range. Unless otherwise specified, V(IN) = V
REG
, V
OUT
= 1.5V.
LM3420A-8.2 LM3420-8.2
Symbol Parameter Conditions Typical
(1)
Units (Limits)
Limit
(2)
Limit
(2)
V
REG
I
OUT
= 1 mA 8.2 V
Regulation Voltage 8.241/8.282 8.282/8.364 V(max)
8.159/8.118 8.118/8.036 V(min)
Regulation Voltage
I
OUT
= 1 mA ±0.5/±1 ±1/±2 %(max)
Tolerance
I
q
I
OUT
= 1 mA 85 μA
Quiescent Current
110/115 125/150 μA(max)
G
m
20 μA ≤ I
OUT
≤ 1 mA 3.3 mA/mV
V
OUT
= 6V 1.3/0.75 1.0/0.50 mA/mV(min)
Transconductance
ΔI
OUT
/ΔV
REG
1 mA ≤ I
OUT
≤ 15 mA 6.0 mA/mV
V
OUT
= 6V 3.0/1.5 2.5/1.4 mA/mV(min)
A
V
1V ≤ V
OUT
≤ V
REG
− 1.2V (−1.3) 1000 V/V
R
L
= 470Ω
(3)
550/250 450/200 V/V(min)
Voltage Gain
ΔV
OUT
/ΔV
REG
1V ≤ V
OUT
≤ V
REG
− 1.2V (−1.3) 3500 V/V
R
L
= 5 kΩ 1500/900 1000/700 V/V(min)
V
SAT
V(IN) = V
REG
+100 mV 1.0 V
Output Saturation
(4)
I
OUT
= 15 mA 1.2/1.3 1.2/1.3 V(max)
I
L
V(IN) = V
REG
−100 mV 0.1 μA
Output Leakage
Current
V
OUT
= 0V 0.5/1.0 0.5/1.0 μA(max)
R
f
176 kΩ
Internal Feedback
220 220 kΩ(max)
Resistor
(5)
132 132 kΩ(min)
E
n
Output Noise Voltage I
OUT
= 1 mA, 10 Hz ≤ f ≤ 10 kHz 140 μV
RMS
(1) Typical numbers are at 25°C and represent the most likely parametric norm.
(2) Limits are 100% production tested at 25°C. Limits over the operating temperature range are specified through correlation using
Statistical Quality Control (SQC) methods. The limits are used to calculate Averaging Outgoing Quality Level (AOQL).
(3) Actual test is done using equivalent current sink instead of a resistor load.
(4) V
SAT
= V(IN) − V
OUT
, when the voltage at the IN pin is forced 100 mV above the nominal regulating voltage (V
REG
).
(5) See Applications and Typical Performance Characteristics sections for information on this resistor.
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