LM3420-42 Datasheet, PDF (6/17 Pages) National Semiconductor (TI) – Lithium-Ion Battery Charge Controller

LM3420-16.8
Electrical Characteristics
Specifications with standard type face are
Range. Unless otherwise specified, V(IN)
=forVT_{REJ G}^=,
25˚C,
V_OUT
and those
= 1.5V.
with
boldface
type
apply
over
full
Operating
Temperature
Symbol
Parameter
Conditions
Typical LM3420A-16.8 LM3420-16.8
Units
(Note 4)
Limit
Limit
(Limits)
(Note 5)
(Note 5)
V_REG
Regulation Voltage I_OUT = 1 mA
16.8
16.884/16.968 16.968/17.136
V
V(max)
16.716/16.632 16.632/16.464
V(min)
Regulation Voltage
Tolerance
I_OUT = 1 mA
±0.5/±1
±1/±2
%(max)
I_q
Quiescent Current I_OUT = 1 mA
85
µA
110/115
125/150
µA(max)
G_m
A_V
V_SAT
I_L
R_f
Transconductance
∆I_OUT/∆V_REG
Voltage Gain
∆V_OUT/∆V_REG
Output Saturation
(Note 7)
Output Leakage
Current
Internal Feedback
Resistor (Note 8)
20 µA ≤ I_OUT ≤ 1 mA
V_OUT = 15V
1 mA ≤ I_OUT ≤ 15 mA
V_OUT = 15V
1V ≤ V_OUT ≤ V_REG − 1.2V (−1.3)
R_L = 1 kΩ (Note 6)
1V ≤ V_OUT ≤ V_REG − 1.2V (−1.3)
R_L = 15 kΩ
V(IN) = V_REG +100 mV
I_OUT = 15 mA
V(IN) = V_REG −100 mV
V_OUT = 0V
3.3
6.0
1000
3500
1.0
0.1
392
0.8/0.4
2.9/0.9
550/250
1200/750
1.2/1.3
0.5/1.0
490
0.7/0.35
2.5/0.75
450/200
1000/650
1.2/1.3
0.5/1.0
490
mA/mV
mA/mV(min)
mA/mV
mA/mV(min)
V/V
V/V(min)
V/V
V/V(min)
V
V(max)
µA
µA(max)
kΩ
kΩ(max)
294
294
kΩ(min)
E_n
Output Noise
Voltage
I_OUT = 1 mA, 10 Hz ≤ f ≤ 10 kHz
280
µV_RMS
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is in-
tended to be functional, but do not guarantee specific performance limits. For guaranteed specifications and test conditions, see the Electrical Characteristics. The
guaranteed specifications apply only for the test conditions listed. Some performance characteristics may degrade when the device is not operated under the listed
test conditions.
Note 2: The maximum power dissipation must be derated at elevated temperatures and is dictated by T_Jmax (maximum junction temperature), θ_JA (junction to am-
bient thermal resistance), and T_A (ambient temperature). The maximum allowable power dissipation at any temperature is P_Dmax = (T_Jmax − T_A)/θ_JA or the number
given in the Absolute Maximum Ratings, whichever is lower. The typical thermal resistance (θ_JA) when soldered to a printed circuit board is approximately 306˚C/W
for the M5 package.
Note 3: The human body model is a 100 pF capacitor discharged through a 1.5 kΩ resistor into each pin.
Note 4: Typical numbers are at 25˚C and represent the most likely parametric norm.
Note 5: Limits are 100% production tested at 25˚C. Limits over the operating temperature range are guaranteed through correlation using Statistical Quality Control
(SQC) methods. The limits are used to calculate National’s Averaging Outgoing Quality Level (AOQL).
Note 6: Actual test is done using equivalent current sink instead of a resistor load.
Note 7: V_SAT = V(IN) − V_OUT, when the voltage at the IN pin is forced 100 mV above the nominal regulating voltage (V_REG).
Note 8: See Applications and Typical Performance Characteristics sections for information on this resistor.
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