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TEA1103TS

更新时间： 2024-02-15 03:08:11
品牌 Logo 应用领域
恩智浦 - NXP 电源电路电池电源管理电路光电二极管信息通信管理
页数 文件大小 规格书
28页 306K
描述
Fast charge ICs for NiCd and NiMH batteries

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TEA1103TS 技术参数

是否Rohs认证： 符合生命周期：Transferred
包装说明：SSOP, SSOP20,.3Reach Compliance Code：unknown
风险等级：5.71Is Samacsys：N
JESD-30 代码：R-PDSO-G20端子数量：20
最高工作温度：85 °C最低工作温度：-20 °C
封装主体材料：PLASTIC/EPOXY封装代码：SSOP
封装等效代码：SSOP20,.3封装形状：RECTANGULAR
封装形式：SMALL OUTLINE, SHRINK PITCH电源：10 V
认证状态：Not Qualified子类别：Power Management Circuits
最大供电电流 (Isup)：6 mA标称供电电压 (Vsup)：10 V
表面贴装：YES技术：BICMOS
温度等级：OTHER端子形式：GULL WING
端子节距：0.635 mm端子位置：DUAL
Base Number Matches：1

TEA1103TS 数据手册

 浏览型号TEA1103TS的Datasheet PDF文件第4页浏览型号TEA1103TS的Datasheet PDF文件第5页浏览型号TEA1103TS的Datasheet PDF文件第6页浏览型号TEA1103TS的Datasheet PDF文件第8页浏览型号TEA1103TS的Datasheet PDF文件第9页浏览型号TEA1103TS的Datasheet PDF文件第10页 
Philips Semiconductors  
Preliminary specification  
Fast charge ICs for NiCd and NiMH  
batteries  
TEA1103; TEA1103T;  
TEA1103TS  
If pin RFSH is connected to ground by depressing the  
switch, the TEA1103x discharges the battery via an  
external transistor connected to pin RFSH. The discharge  
current is regulated with respect to the external (charge)  
sense resistor (Rsense). End-of-discharge is reached when  
the battery is discharged to 1 V per cell. Refreshing the  
battery can only be activated during charging of NiCd and  
NiMH batteries.  
The inhibit mode has the main priority. This mode is  
activated when the Vstb input pin is connected to ground.  
Inhibit can be activated at any charge/discharge state,  
whereby the output control signals will be zero, all LEDs  
will be disabled and the charger timings will be set on hold.  
Table 1 gives an operational summary.  
Table 1 Functionality of program pins  
FUNCTION  
FCT  
NTC  
RFSH  
Vstb  
Inhibit  
X(1)  
not low(2)  
floating  
high  
X(1)  
X(1)  
X(1)  
low  
not low  
not low  
not low  
not low  
high  
Refresh  
low  
∆T/∆t detection  
note 3  
note 3  
note 4  
X(1)  
not low  
not low  
not low  
not low  
not low  
not low  
∆T/∆t and voltage peak detection  
Voltage peak detection  
not low  
not low  
not low  
not low  
Trickle charge at standby  
note 4  
note 3  
not low  
floating(5)  
Voltage regulation at standby  
Notes  
1. Where X = don’t care.  
2. Not low means floating or high.  
3. The NTC voltage has been to be less than 3.3 V, which indicates the presence of an NTC.  
4. The NTC voltage is outside the window for NTC detection.  
5. Vstb has to be floating or set to a battery regulating voltage in accordance with the specification.  
Rref in the event of fast charge and by an internal bias  
Supply block  
current source in the event of top-off and trickle charge  
(IIB), see Fig.1. The positive node of Rb will be regulated to  
zero via error amplifier A1, which means that the voltage  
across Rb and Rsense will be the same. The fast charge  
current is defined by the following equation:  
The supply block delivers the following outputs:  
• A power-on reset pulse to reset all digital circuitry at  
battery insertion or supply switch-on. After a general  
reset the system will start fast charging the battery.  
• A 4.25 V stabilized voltage source (VS) is externally  
available. This source can be used to set the thermistor  
biasing, to initialize the programs, to supply the external  
circuitry for battery voltage based charge indication and  
to supply other external circuitry.  
I
fast × Rsense = Rb × Iref  
(1)  
The output of amplifier A1 is available at the loop stability  
pin LS, consequently the time constant of the current loop  
can be set. When Vpeak (NiCd and NiMH) is applied, the  
current sensing for the battery voltage will be reduced,  
implying that the charge current will be regulated to zero  
during:  
• A 4.25 V bias voltage (Vsl) is available for use for more  
indication LEDs. This output pin will be zero during the  
initialization period at start-up, thus avoiding any  
interference of the extra LEDs when initializing.  
tsense = 210 × POD × tosc  
(2)  
Actually battery voltage sensing takes place in the last  
oscillator cycle of this period.  
Charge control  
The charge current is sensed via a low-ohmic resistor  
(Rsense), see Fig.4. A positive voltage is created across  
resistor Rb by means of a current source Iref which is set by  
1999 Jan 27  
7
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