5
FN9271.1
November 30, 2006
USB Input Constant Charge Current
I
CHARGE
USBON = HIGH, VBAT: 2.7 - 3.8V
332
380
410
mA
USB Input Trickle Charge Current
I
TRICKLE
VBAT = 2.2V
66
80
91
mA
PRECONDITIONING CHARGE THRESHOLD
Preconditioning Charge Threshold Voltage
V
MIN
2.5
2.6
2.7
V
RECHARGE THRESHOLD
Recharge Threshold Voltage
V
RCH
3.8
3.9
4.0
V
INTERNAL TEMPERATURE MONITORING
Current Foldback Threshold (Note 5)
T
FOLD
110
125
140
°C
LOGIC INPUT AND OUTPUT
USBON Logic Input High
1.3
-
-
V
USBON Logic Input LOW
-
-
0.4
V
EN Pin Logic Input High
1.3
-
-
V
EN Pin Logic Input Low
-
-
0.4
V
EN Pin Internal Pull Down Resistance
350
600
850
k
Ω
USBON Pin internal Pull Down Resistance
700
1000
1300
k
Ω
CHG/PPR Sink Current
Pin Voltage = 0.8V
10
-
-
mA
NOTES:
3. The 4.0V V
BAT
is selected so that the CHG output can be used as the indication for the offset comparator output indication. If the V
BAT
is lower
than the POR threshold, no output pin can be used for indication.
4. The charge current can be affected by the thermal foldback function if the IC under the test setup cannot dissipate the heat.
5. Guaranteed by characterization.
Electrical Specifications
Typical Values Are Tested at USB = CRDL = 5V and ambient temperature is at +25°C, Unless Otherwise Noted.
All Maximum and Minimum Values Are Guaranteed Under the Recommended Operating Conditions
(Continued)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNITS
Typical Operating Performance
The test conditions for the Typical Operating Performance are: V
IN
= 5V, T
A
= +25°C,
R
ICDL
= 12.4k
Ω,
R
IMIN
= 10.0k
Ω
, V
BAT
= 3.7V, Unless Otherwise Noted
FIGURE 1. CHARGER OUTPUT VOLTAGE vs TEMPERATURE
FIGURE 2. CHARGER OUTPUT VOLTAGE vs INPUT VOLTAGE
4.100
4.120
4.140
4.160
4.180
4.200
-40
-20
0
20
TEMPERATURE (
°C)
40
60
80
100
120
140
V
CRDL
USB
CHARGE CURRENT = 1mA
4.1900
4.1925
4.1950
4.1975
4.2000
4.2025
4.2050
4.2075
4.2100
0
5
10
15
20
25
V
IN
(V)
V
CRDL
USB
CHARGE CURRENT = 1mA
ISL9214