TEA1102T-T

更新时间： 2024-01-04 13:07:55

品牌	Logo	应用领域
恩智浦 - NXP		电池
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28页	309K
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TEA1102T-T 数据手册

Philips Semiconductors

Preliminary speciﬁcation

Fast charge ICs for NiCd, NiMH, SLA and

LiIon

TEA1102; TEA1102T;

TEA1102TS

After the ‘fill-up’ period the charge current is not regulated,

which means that the output drivers AO and PWM are

fixed to zero. When the battery voltage becomes less than

3 V for Lilon and 1.5 V for SLA, the IC enters the fast

charge mode again.

• The standby charge method (NiCd and NiMH), trickle

charge or voltage regulation, is defined by the input pin

V_stb. By biasing this voltage with a set voltage, the output

voltage will be regulated to the V_stbset voltage. If this pin

is connected to V_S, or no NTC is connected the system

applies trickle charge.

If pin RFSH is connected to ground by depressing the

switch, the TEA1102x discharges the battery via an

external transistor connected to pin RFSH. The discharge

current is regulated with respect to the external (charge)

sense resistor (R_sense). 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. When charging LiIon and SLA batteries,

discharge before charge is disabled.

FUNCTIONAL DESCRIPTION

Control logic

The main function of the control logic is to support the

communication between several blocks. It also controls

the charge method, initialization and battery full detection.

The block diagram of the TEA1102x is illustrated in Fig.1.

Conditioning charge method and initializations

The inhibit mode has the main priority. This mode is

activated when the V_stbinput 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.

At system switch-on, or at battery insertion, the control

logic sets the initialization mode in the timer block. After

the initialization time the timer program pins can be used

to indicate the charging state using several LEDs.

The charge method is defined at the same time by the

following methods:

• If the FCT pin is 0 or 1.25 V, indicating that SLA or LiIon

batteries have to be charged, the battery will be charged

by limit current and limit voltage regulation. Without

identification (FCT pin floating), the system will charge

the battery according to the charge characteristic of

NiCd and NiMH batteries.

Table 1 Functionality of program pins

FUNCTION

FCT

NTC

RFSH

V_stb

Inhibit

X⁽¹⁾

low

X⁽¹⁾

LiIon and SLA detection

Refresh (NiCd and NiMH)

∆T/∆t detection

low

not low⁽²⁾

ﬂoating

high

low

not low

high

note 3

note 4

X⁽¹⁾

not low

∆T/∆t and voltage peak detection

Voltage peak detection

Trickle charge at standby

not low

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. V_stbhas to be floating or set to a battery regulating voltage in accordance with the specification.

1999 Jan 27

1...4 5 678 9 10...28

中文翻译

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与TEA1102T-T相关器件

型号	品牌	获取价格	描述	数据表
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,
TEA1103TD	NXP	获取价格	IC 0.014 A BATTERY CHARGE CONTROLLER, 200 kHz SWITCHING FREQ-MAX, PDSO20, PLASTIC, SO-20,
TEA1103TD-T	NXP	获取价格	IC 0.014 A BATTERY CHARGE CONTROLLER, 200 kHz SWITCHING FREQ-MAX, PDSO20, PLASTIC, SO-20,
TEA1103TD-T	PHILIPS	获取价格	Power Management Circuit, BICMOS, PDSO20,
TEA1103TS	NXP	获取价格	Fast charge ICs for NiCd and NiMH batteries
TEA1103TS/N2	NXP	获取价格	IC 0.014 A BATTERY CHARGE CONTROLLER, 200 kHz SWITCHING FREQ-MAX, PDSO20, PLASTIC, SSOP-20
TEA1104	NXP	获取价格	Cost effective battery monitor and fast charge IC for NiCd and NiMH chargers
TEA1104P	NXP	获取价格	暂无描述

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