- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄368631 > TEA1103T (NXP SEMICONDUCTORS) Fast charge ICs for NiCd and NiMH batteries PDF資料下載
參數(shù)資料
| 型號： | TEA1103T |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Fast charge ICs for NiCd and NiMH batteries |
| 中文描述： | 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 |
| 文件頁數(shù)： | 11/28頁 |
| 文件大?。?/td> | 302K |
| 代理商： | TEA1103T |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁當(dāng)前第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁
1999 Jan 27
11
Philips Semiconductors
Preliminary specification
Fast charge ICs for NiCd and NiMH
batteries
TEA1103; TEA1103T;
TEA1103TS
At an increase of the battery voltage the 14-bit
Analog-to-Digital Converter (ADC) is refreshed with this
new value. Therefore, the digitized value always
represents the maximum battery voltage. A decreased
V
bat
voltage is not stored, but is compared to the stored
value.
Full is detected when the voltage decrease of V
bat
is
1
4
%
of the stored peak battery value. To avoid interference due
to the resistance of the battery contacts during battery
voltage sensing, the charge current is regulated to zero
during t = 2
10
×
POD
×
t
osc
, via the regulation pins AO and
PWM. At the last period, the V
bat
voltage is sensed and
stored in a sample-and-hold circuit. This approach
ensures very accurate detection of the battery full
condition (minus
1
4
%).
When battery full is determined by
T/
t, the voltage on
the NTC pin is used as the input voltage to the AD/DA
converter. The sampling time at
T/
t sensing is given by
the following equation:
T
t
(9)
After this initialized sample time the new temperature
voltage is compared to the preceding AD/DA voltage and
the AD/DA is refreshed with this new value. A certain
increase of the temperature is detected as full battery,
depending on the initialization settings. The decision of full
detection by
T/
t or V
peak
is digitally filtered thus avoiding
false battery full detection.
t
sampling
-------
2
17
POD
×
PSD
×
t
osc
×
=
Output drivers
The charge current regulation signal is available at two
output pins, AO and PWM.
A
NALOG OUTPUT
The analog control voltage output at pin 18 (AO) can be
used to drive an opto-coupler in mains separated
applications when an external resistor is connected
between AO and the opto-coupler. The maximum current
through the opto-coupler diode is 2 mA. The voltage gain
of amplifier A2 is typical 11 dB (times 3.5). The DC voltage
transfer is given by the following equation:
V
AO
= 3.5
×
(V
LS
1.35).
The AO output can be used for:
Linear (DC) applications
Not mains isolated SMPS with a separate controller
Mains isolated SMPS, controlled by an opto-coupler.
P
ULSE
W
IDTH
M
ODULATOR
(PWM)
The LS voltage is compared internally with the oscillator
voltage to deliver a pulse width modulated output at PWM
(pin 15) to drive an output switching device in a SMPS
converter application via a driver stage. The PWM output
is latched to prevent multi-pulsing. The maximum duty
factor is internally fixed to 79% (typ.). The PWM output can
be used for synchronization and duty factor control of a
primary SMPS via a pulse transformer.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TEA1118A | Versatile cordless transmisssion circuit |
| TEA1118AM | LED TRUE GREEN 532NM SMD |
| TEA1118AT | Versatile cordless transmisssion circuit |
| TEA1118 | Versatile cordless transmisssion circuit |
| TEA1118M | Versatile cordless transmisssion circuit |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TEA1103TS | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Fast charge ICs for NiCd and NiMH batteries |
| TEA1104 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Cost effective battery monitor and fast charge IC for NiCd and NiMH chargers |
| TEA1104/N2 | 制造商:NXP Semiconductors 功能描述: |
| TEA1104T | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Cost effective battery monitor and fast charge IC for NiCd and NiMH chargers |
| TEA1104TD-T | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Battery Management |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。