
2
Lithium-Ion Battery Charger
TC3827
TC3827-4 9/28/00
ABSOLUTE MAXIMUM RATINGS*
Input Voltage (VIN), VOUT, VSNS, MODE, and IMON ...........
.............................................................. –0.3V to 6.0V
SHDN ...............................................–0.3V to (VIN + 0.3V)
8-Pin MSOP (derate 4.1mW/
°C above +70°C) .....330mW
Operating Ambient Temperature Range .. –20
°C to +85°C
Storage Temperature Range ................. –65
°C to +150°C
Lead Temperature (Soldering, 10 sec) ................. +300
°C
Vapor Phase (60 sec) ........................................... +210
°C
Infrared (15 sec) .................................................... +220
°C
IIMON (source) ......................................................0.375mA
ELECTRICAL CHARACTERISTICS: VIN= [VOUT + 1V] , TA = -20°C to +85°C, unless otherwise noted. Typical values
at TA = +25°C, RSENSE = 500m, Test Circuit Figure 3.
Symbol
Parameter
Test Conditions
Min
Typ
Max
Units
IVIN
Power Supply Current
Shutdown Mode, VSHDN = 0V
—
1
15
A
Constant Voltage Mode
—
350
560
VIN
Power Supply Voltage In
4.5
—
5.5
V
Voltage Regulation (Constant Voltage Mode)
VREG
Battery Regulation Volts
3827- 4.2VUA
—
4.2
—
V
3827- 4.1VUA
—
4.1
—
VOUT
Output Voltage Accuracy
VIN = VOUT + 1V to 5.5V,
–1
—
+1
%
LIREG
Line Regulation
VIN = 4.5V to 5.5V, IOUT = 75mA
–10
—
+10
mV
LDREG
Load Regulation
IOUT =10mA to 75mA
–1
±0.2
+1
mV
IDISCH
Output Reverse Leakage
VIN = Floating, VOUT = VREG
—1
5
A
MOSFET Gate Drive
IDRV
Gate Drive Current
Sink, Constant Voltage Mode (Note 1)
—
1
mA
Source, Constant Voltage Mode (Note 1)
0.08
—
VDRV
Gate Drive Min Voltage
—
1.0
—
V
Current Sense Amp
VGAIN
GAIN (
VGS/VOUT)
—
100
—
dB
VCS
Current Limit Threshold
(VIN – VSNS) @ IMAX
40
53
75
mV
ISC
Short Circuit Current
—
46
—
mA
K
KFactor
—
0.46
—
A/A
MODE
VTH
Mode Threshold
—
VREG
—V
VOL
Mode Low Voltage
ISINK = 10mA, VOUT = 3.5V
—
400
mV
ILK
Mode Leakage Current
VMODE = 5.5V, IO = 0mA,
—
+1
A
MODE = Constant Voltage
SHDN
VIH
SHDN High Threshold
40
—
%VDD
VIL
SHDN Low Threshold
–
—
25
%VDD
ILK
SHDN Leakage Current
VSHDN = 0V to 5V
—
+1
A
IMON
VIMON
Current Sense Gain
VO = 0V to 3.5V,RL > 20k
—
26
—
V/V
(VIN - VSNS)
IMODE (sink) .............................................................. 20mA
IDRV ............................................................................1mA
ESD Rating ................................................................. 2kV
*Static-sensitive device. Unused devices must be stored in conductive
material. Protect devices from static discharge and static fields. Stresses
above those listed under Absolute Maximum Ratings may cause perma-
nent damage to the device. These are stress ratings only and functional
operation of the device at these or any other conditions above those
indicated in the operational sections of the specifications is not implied.
Exposure to Absolute Maximum Rating Conditions for extended periods
may affect device reliability.
Notes: 1. Where VOUT = 1% from Nominal.