TEA1102T

更新时间： 2024-02-26 01:49:59

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	309K
描述
Fast charge ICs for NiCd, NiMH, SLA and LiIon

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TEA1102T 技术参数

生命周期：	Obsolete	零件包装代码：	SSOP
包装说明：	SSOP,	针数：	20
Reach Compliance Code：	unknown	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	5.71
模拟集成电路 - 其他类型：	BATTERY CHARGE CONTROLLER	控制技术：	PULSE WIDTH MODULATION
最大输入电压：	11.5 V	最小输入电压：	5.5 V
标称输入电压：	10 V	JESD-30 代码：	R-PDSO-G20
长度：	7.2 mm	功能数量：	1
端子数量：	20	最高工作温度：	85 °C
最低工作温度：	-20 °C	最大输出电流：	0.014 A
封装主体材料：	PLASTIC/EPOXY	封装代码：	SSOP
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE, SHRINK PITCH
认证状态：	Not Qualified	座面最大高度：	2 mm
表面贴装：	YES	切换器配置：	SINGLE
最大切换频率：	200 kHz	技术：	BICMOS
温度等级：	OTHER	端子形式：	GULL WING
端子节距：	0.65 mm	端子位置：	DUAL
宽度：	5.3 mm	Base Number Matches：	1

TEA1102T 数据手册

Philips Semiconductors

Preliminary speciﬁcation

Fast charge ICs for NiCd, NiMH, SLA and

LiIon

TEA1102; TEA1102T;

TEA1102TS

charged with approximately 0.15 Q. In this way the battery

is fully charged before the system switches over to

standby.

Supply block

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.

When pin 1 (V_stb) is connected to V_S, or no NTC is

connected the system compensates the (self) discharge of

the battery by trickle charge. The trickle charge current will

be pulsating, defined by the following equation:

• A 4.25 V stabilized voltage source (V_S) 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.

–6

_trickle× R_sense= R ×

× 10

(5)

------

During the non current periods at trickle charge the charge

current is regulated to zero, so that the current for a load

connected in series across the battery with the sense

resistor will be supplied by the power supply and not by the

battery.

• A 4.25 V bias voltage (V_sl) 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.

If at pin 1 (V_stb) a reference voltage is set in accordance

with the specification, and no NTC is connected the charge

mode will switch over from current to voltage regulation

after top-off. The reference regulating voltage can be

adjusted to the battery characteristic by external resistors

Charge control

The charge current is sensed via a low-ohmic resistor

(R_sense), see Fig.4. A positive voltage is created across

resistor R_bby means of a current source I_refwhich is set by

connected to pin V_stb

R_refin the event of fast charge and by an internal bias

current source in the event of top-off and trickle charge

(I_IB), see Fig.1. The positive node of R_bwill be regulated to

zero via error amplifier A1, which means that the voltage

across R_band R_sensewill be the same. The fast charge

current is defined by the following equation:

This reference voltage has to be selected in such a way

that it equals the rest voltage of the battery. By using

voltage regulation, the battery will not be discharged at a

load occurrence. If the V_stbinput pin is floating, the

TEA1102x will apply voltage regulation at 1.325 V during

the standby mode (NiCd and NiMH). The current during

voltage regulation is limited to 0.5 CA. If the battery charge

current is maximized to 0.5 CA for more than 2 hours

charging will be stopped. Moreover, if the temperature

exceeds T_max, charging will be stopped completely.

As voltage regulation is referred to one cell, the voltage on

the V_batpin must be the battery voltage divided by the

number of cells (NiCd and NiMH).

_fast× R_sense= R_b× I_ref

(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 V_peak(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:

t_sense= 2¹⁰× POD × t_osc

(2)

For LiIon or SLA batteries, the battery is extra charged

after full detection by constant voltage regulation during a

certain fill-up period. LiIon and SLA batteries have to

identify themselves by an extra pin on the battery pack to

ground, which is connected via a resistor to pin 11 (FCT).

As the battery voltage sense (V_bat) has to be normalized to

a one cell voltage of NiCd and NiMH packages, the V_bat

input pin will be regulated to 1.367 and 1.633 V during

fill-up for LiIon and SLA respectively. In this way this

system can accept a mixture of one LiIon, two SLA and

three NiCd or NiMH packages.

Actually battery voltage sensing takes place in the last

oscillator cycle of this period.

To avoid modulation on the output voltage, the top-off

charge current is DC regulated, defined by the following

equation:

_{top – off}× R_sense= R_b× 3 × 10^–6

(3)

where:

t_{top – off}= 2²⁷× TOD × t_osc

(4)

After fill-up, charging of LiIon or SLA batteries is disabled.

The battery charge is then fixed to zero, ensuring

maximum life-cycle of the battery.

The top-off charge current will be approximately 0.15 CA,

which maximizes the charge in the battery under safe and

slow charging conditions. The top-off charge period will be

approximately one hour, so the battery will be extra

Because of a fixed zero charge current, the battery will be

discharged if a load is applied.

1999 Jan 27

1...5 6 789 10 11...28

中文翻译

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与TEA1102T相关器件

型号	品牌	获取价格	描述	数据表
TEA1102T/N3	NXP	获取价格	IC 0.014 A BATTERY CHARGE CONTROLLER, 200 kHz SWITCHING FREQ-MAX, PDSO20, 7.50 MM, PLASTIC
TEA1102TD	NXP	获取价格	IC 0.014 A BATTERY CHARGE CONTROLLER, 200 kHz SWITCHING FREQ-MAX, PDSO20, 7.50 MM, PLASTIC
TEA1102TD-T	NXP	获取价格	IC 0.014 A BATTERY CHARGE CONTROLLER, 200 kHz SWITCHING FREQ-MAX, PDSO20, 7.50 MM, PLASTIC
TEA1102TS	NXP	获取价格	Fast charge ICs for NiCd, NiMH, SLA and LiIon
TEA1102TS/N3	NXP	获取价格	IC 0.014 A BATTERY CHARGE CONTROLLER, 200 kHz SWITCHING FREQ-MAX, PDSO20, 5.30 MM, PLASTIC
TEA1102TSDB	NXP	获取价格	IC 0.014 A BATTERY CHARGE CONTROLLER, 200 kHz SWITCHING FREQ-MAX, PDSO20, 5.30 MM, PLASTIC
TEA1102T-T	NXP	获取价格	暂无描述
TEA1103	NXP	获取价格	Fast charge ICs for NiCd and NiMH batteries
TEA1103T	NXP	获取价格	Fast charge ICs for NiCd and NiMH batteries
TEA1103T/N2	NXP	获取价格	IC 0.014 A BATTERY CHARGE CONTROLLER, 200 kHz SWITCHING FREQ-MAX, PDSO20, PLASTIC, SO-20,

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