參數(shù)資料
型號(hào)： TEA1103T-T
廠商： NXP SEMICONDUCTORS
元件分類(lèi)： 穩(wěn)壓器
英文描述： 0.014 A BATTERY CHARGE CONTROLLER, 200 kHz SWITCHING FREQ-MAX, PDSO20
封裝： 7.50 MM, PLASTIC, MS-013AC, SOT-163-1, SOP-20
文件頁(yè)數(shù)： 2/28頁(yè)
文件大?。?/td> 218K
代理商： TEA1103T-T
1999 Jan 27
10
Philips Semiconductors
Preliminary specication
Fast charge ICs for NiCd and NiMH
batteries
TEA1103; TEA1103T;
TEA1103TS
Fig.3 ttime-out as a function of R23 and PTD with C4 as parameter.
handbook, full pagewidth
200
fosc
(kHz)
0
30
60
90
120
150
ttime-out (min)
180
10
12.5
(R23 min)
PTD programming
125
(R23 max)
30
50
70
90
R23 (k
)
C4
(pF)
110
68
100
150
220
390
560
820
1500
130
MGD280
40
80
120
160
:1
(GND)
:2
(n.c.)
:4
(
+VS)
prefered
oscillator
range
(POD = GND)
prefered
oscillator
range
(POD = n.c.)
prefered
oscillator
range
(POD =
+VS)
LED indication
With few external components, indication LEDs can be
connected to the program pins and the LED pin of the
TEA1103x. These program pins change their function from
an input to an output pin after a short initialization time at
system switch-on or battery insertion. Output pin Vsl
enables the external LEDs to be driven and avoids
interaction with the programming of the dividers during the
initialization period.
The applied LEDs indicate:
Protection
Refresh
Fast charge
100%
No-battery.
The LED output pin can also indicate the charging state by
one single LED. The indication LED can be connected
directly to the LED output. This single LED indicates:
Fast charge (LED on)
100% or refresh (LED off)
Protection or inhibit (LED floating).
The refresh can be indicated by an extra LED connected
to pin 4 (PSD). A buzzer can also be driven from the
TEA1103x to indicate battery insertion end of refresh or full
battery.
AD/DA converter
When battery full is determined by peak voltage detection,
the Vbat voltage is sampled at a rate given by the following
equation:
(8)
The analog value of a Vbat sample is then digitized and
stored in a register. On the following sample, the digitized
value is converted back to the analog value of Vbat and
compared with the ‘new’ Vbat sample.
t
sampling Vpeak
()
2
16
POD
×
t
osc
×
=
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