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參數(shù)資料
| 型號(hào)： | U2402B-X |
| 廠商： | TEMIC SEMICONDUCTORS |
| 元件分類： | 電源管理 |
| 英文描述： | POWER SUPPLY SUPPORT CKT, PDIP18 |
| 封裝： | DIP-18 |
| 文件頁數(shù)： | 4/18頁 |
| 文件大?。?/td> | 294K |
| 代理商： | U2402B-X |
U2402B
Rev. A4, 08-Nov-99
12 (18)
Status Control
Status control inside and outside the charging process are designated by LED1 and LED2 outputs given in the table
below:
LED1 (red)
LED2 (green)
Status
OFF
ON
No battery, top off charge, trickle charge
OFF
Blinking
Quick charge, temperature out of the window before battery insertion or power on
ON
OFF
Temperature out of the window
Blinking
OFF
Battery break (interrupt) or short circuit
The blink frequency of LED outputs can be calculated as
follows:
f
(LED)
+
Oscillator frequency, fosc
1024
Oscillator
Time
sequences
regarding
measured
values
and
evaluation are determined by the system oscillator. All
the technical data given in the description are with the
standard frequency 800 Hz.
It is possibe to alter the frequency range in a certain
limitation. Figure 13 shows the frequency versus
resistance curves with different capacitance values.
Oscillation Frequency Adjustment
Recommendations:
0.5C charge
0.5
500 Hz =
250 Hz
1C charge
500 Hz
2C charge
2
500 Hz =
1000 Hz
3C charge
3
500 Hz =
1500 Hz
0.1
1
10
100
1000
10000
R
(
k
)
O
fO ( kHz )
10
W
CO=2.2nF
CO=4.7nF
CO=10nF
Figure 13. Frequency versus resistance for different capacitance values
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