LM3622 Datasheet, PDF (4/9 Pages) National Semiconductor (TI) – Lithium-Ion Battery Charger Controller

Absolute Maximum Ratings (Note 1)
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Supply Voltage (V_CC)
LV
EXT (Note 2)
LV_SEL
LV_ENB
ESD Susceptibility (Note 3)
Storage Temperature
Lead Temp. Soldering
Vapor Phase (60 sec.)
Infrared (15 sec.)
-0.3 to 24V
-0.3 to 24V
-0.3 to 24V
-0.3 to 24V
-0.3 to 24V
2500V
−40˚C to +125˚C
215˚C
220˚C
Power Dissipation (T_A = 25˚C)
(Note 4)
Max. Package Dissipation
Operating Ratings (Note 1)
Supply Voltage (V_CC)
Ambient Temperature Range
Junction Temperature Range
Thermal Resistance, θ_JA
SOIC-8
350mW
4.5V to 24V
−20˚C to 70˚C
−20˚C to 85˚C
170˚C/W
Electrical Characteristics
LM3622-XX
Unless otherwise specified V_CC = 5V/Cell T_A =T_J = 25˚C. Limits with standard typeface apply for T_J = 25˚C, and limits in bold-
face type apply over the indicated temperature range.
Symbol
Parameter
Conditions
Min
Typ
Max
Units
V_CC
I_CC
V_CEL
Operating power supply range
Quiescent Current
Regulation Voltage
LM3622A-4.1
LM3622A-8.2
LM3622A-4.2
LM3622A-8.4
LM3622-4.1
LM3622-8.2
LM3622-4.2
LM3622-8.4
T_J = 0˚C to +70˚C
V_CC = 4.5V/cell (Note 5)
4.5
24.0
V
210
µA
4.070
4.100
4.130
V
8.140
8.200
8.260
V
4.170
4.200
4.230
V
8.340
8.400
8.460
V
4.050
4.100
4.150
V
8.100
8.200
8.300
V
4.150
4.200
4.250
V
8.300
8.400
8.500
Long Term Stability
(Note 6)
0.02
%
V_CS
Current limit threshold at CS pin V_CEL = 4V for LM3622-4.X
V_CEL = 8V for LM3622-8.X
90
100
110
mV
I_CEL
Current in CEL pin
V_CC Supply connected
25
µA
V_CC Supply Open
200
nA
LVth
Low voltage detect threshold
(between pins CS and GND)
LV_ENB = 0V and LV_SEL = 0V
LV_ENB = 0V and LV_SEL = V_CC
2.00
2.15
2.30
V/Cell
2.55
2.70
2.85
V/Cell
I_EXT
EXT pin output sink current
V_EXT = 4V for LM3622-4.X
15
25
mA
V_EXT = 8V for LM3622-8.X
I_IN1
LV_SEL input current
LV_SEL = 5V, LM3622-4.X
LV_SEL = 10V, LM3622-8.X
20
50
µA
I_IN2
LV_ENB input current
LV_ENB = 5V, LM3622-4.X
LV_ENB = 10V, LM3622-8.X
20
50
µA
I_LV
LV pin leakage current
LV = 5V/Cell
250
nA
V_LV
LV pin saturation voltage
I_SINK = 1mA
T_J = −20˚C to 85˚C
0.25
0.40
V
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.
Note 2: V_EXT is not allowed to exceed (V_CC+ 0.3V) or damage to the device may occur.
Note 3: Rating is for the human body model, a 100 pF capacitor discharged through a 1.5kΩ resistor into each pin.
Note 4: The maximum power dissipation must be de-rated at elevated temperatures and is limited by T_JMAX (maximum junction temperature), θ_JA
(junction-to-ambient thermal resistance) and T_A (ambient temperature). The maximum power dissipation at any temperature is: PDiss_MAX = (T_JMAX − T_A) / θ_JA up
to the value listed in the Absolute Maximum Ratings.
Note 5: Limits reflect initial accuracy.
Note 6: T_J = 85˚C, 1000 hours. Activation energy of 0.78eV used.
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