MAX713C(2002) 데이터 시트보기 (PDF) - Maxim Integrated
부품명
상세내역
제조사
MAX713C Datasheet PDF : 17 Pages
| |||
NiCd/NiMH Battery
Fast-Charge Controllers
ELECTRICAL CHARACTERISTICS (continued)
(IV+ = 10mA, TA = TMIN to TMAX, unless otherwise noted. Refer to the Typical Operating Circuit. All measurements are with respect to
BATT-, not GND.)
PARAMETER
FASTCHG Low Current
FASTCHG High Current
A/D Input Range (Note 4)
CONDITIONS
MIN
VFASTCHG = 0.4V
2
VFASTCHG = 10V
Battery voltage ÷ number of cells programmed 1.4
TYP
MAX
10
1.9
UNITS
mA
µA
V
Note 1: The MAX712/MAX713 are powered from the V+ pin. Since V+ shunt regulates to +5V, R1 must be small enough to allow at
least 5mA of current into the V+ pin.
Note 2: Offset voltage of THI and TLO comparators referred to TEMP.
Note 3: tA is the A/D sampling interval (Table 3).
Note 4: This specification can be violated when attempting to charge more or fewer cells than the number programmed. To ensure
proper voltage-slope fast-charge termination, the (maximum battery voltage) ÷ (number of cells programmed) must fall
within the A/D input range.
(TA = +25°C, unless otherwise noted.)
Typical Operating Characteristics
CURRENT-SENSE AMPLIFIER
FREQUENCY RESPONSE (with 15pF)
20
40 MAX712/13 toc01
C2 = 15pF
FASTCHG = 0V
10
0
AV
0
Φ
-40
BATT-
CC
-10
+ CURRENT-
+
VIN SENSE
VOUT
-
AMP
-
GND
BATT-
-20
1k
10k
100k
1M
FREQUENCY (Hz)
-80
-120
10M
CURRENT-SENSE AMPLIFIER
FREQUENCY RESPONSE (with 10nF)
20
MAX712/13 toc02
40
C2 = 10nF
FASTCHG = 0V
10
0
AV
0
-40
Φ
-10
-80
-20
10
100
1k
FREQUENCY (Hz)
-120
10k
CURRENT ERROR-AMPLIFIER
TRANSCONDUCTANCE
100
FASTCHG = 0V, V+ = 5V
10
1
0.1
1.95 1.97 1.99 2.01 2.03 2.05
VOLTAGE ON CC PIN (V)
SHUNT-REGULATOR VOLTAGE
vs. CURRENT
5.8
5.6 DRV NOT SINKING CURRENT
5.4
5.2
5.0
DRV SINKING CURRENT
4.8
4.6
4.4
4.2
4.0
0 10 20 30 40 50 60
CURRENT INTO V+ PIN (mA)
ALPHA SENSORS PART No. 14A1002
STEINHART-HART INTERPOLATION
MAX712/13 toc05
1.6
35
1.4
30
1.2
25
1.0
20
0.8
15
0.6
10
0.4
5
0.2
0
0 10 20 30 40 50 60
BATTERY TEMPERATURE(°C)
_______________________________________________________________________________________ 3
Share Link: 