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Philips TEA1104, Datasheet

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Philips TEA1104 Datasheet Download Page 3

1996 Feb 26

3

Philips Semiconductors

Objective specification

Cost effective battery monitor and fast
charge IC for NiCd and NiMH chargers

TEA1104; TEA1104T

BLOCK DIAGRAM

handbook, full pagewidth

MGE354

SAMPLE-

AND-HOLD

FILTER

BATTERY

FULL

DETECTOR

OR

OR

SUPPLY

MODE

LATCH

OSCILLATOR

TIMER

fast

trickle

CONTROL

battery high

protection

battery low

protection

Tmax

Tmin

Tcut-off

trickle

TO

4

6

2

7

1

8

5

3

Rref

VS

VP

Vbat

NTC

OSC

LED

GND

POR

TEA1104

TEA1104T

Fig.1  Block diagram.

Summary of Contents for TEA1104

Page 1: ...DATA SHEET Objective specification File under Integrated Circuits IC03 1996 Feb 26 INTEGRATED CIRCUITS TEA1104 TEA1104T Cost effective battery monitor and fast charge IC for NiCd and NiMH chargers ...

Page 2: ... battery monitor circuit in charge systems for NiCd and NiMH batteries It is especially designed for cost effective compact consumer applications The circuit is able to detect fully charged batteries by currentless battery voltage sensing Several output drive functions are available to control the reduced trickle charge current to keep the batteries full with maximum life expectations The battery ...

Page 3: ...rs TEA1104 TEA1104T BLOCK DIAGRAM handbook full pagewidth MGE354 SAMPLE AND HOLD FILTER BATTERY FULL DETECTOR OR OR SUPPLY MODE LATCH OSCILLATOR TIMER fast trickle CONTROL battery high protection battery low protection Tmax Tmin Tcut off trickle TO 4 6 2 7 1 8 5 3 Rref VS VP Vbat NTC OSC LED GND POR TEA1104 TEA1104T Fig 1 Block diagram ...

Page 4: ... the batteries fully charged but at he same time assuring long battery life In Fig 3 the battery voltage during fast charge is plotted FUNCTIONAL DESCRIPTION A block diagram of the TEA1104 TEA1104T is illustrated in Fig 1 Mode latch The Mode latch determines if the system is in the fast or in the slow charge mode Fast charge is active at power switch on and battery connected temperature between mi...

Page 5: ...hours The relationship with the oscillator period time is Time out 2 exp28 tosc The duty factor in the trickle charge mode The duty factor is fixed to 1 40 meaning that the average Itrickle 1 40 Ifast ton 3 4 2 exp9 tosc toff 2 exp14 tosc The battery voltage is sensed each cycle time The cycle time is defined as Tcycle 2 exp16 tosc The inhibit time is the time that the charger current is disabled ...

Page 6: ... see Fig 4 In non mains isolated systems the current source can be switched via the auxiliary winding see Fig 6 using the TEA140X power plugs In the application section an example is shown driving two LEDs that are indicating fast charging protection during fast charging full status and removed batteries It is also possible to output the same information via one LED only Fig 3 NiCd battery charact...

Page 7: ... V Vbat 3 6 V and Tmin Tbat Tmax note 5 circuit non active IDD 45 µA total reset logic set TIME OUT e g 111 min set Tmax e g 48 oC Tmin e g 20 oC circuit active clamp at 11 5 V IDDmax 25 mA circuit active blinks FAST blinks FAST ON FAST blinks FAST FULL OFF ON FAST FULL OFF OFF FAST FULL ON START no yes yes yes yes no no no no no no dual LED indication yes yes stop charge total reset open battery ...

Page 8: ...e found in the Quality Reference Handbook The handbook can be ordered using the code 9397 750 00192 SYMBOL PARAMETER CONDITIONS MIN MAX UNIT VP supply voltage 0 5 13 2 V VoLED LED output voltage pin 8 0 5 VP V ViNTC negative temperature coefficient resistor input voltage pin 2 0 5 5 V Vi OSC oscillator input voltage pin 7 0 5 5 V Vi bat battery input voltage pin 4 0 5 5 V VRref reference resistor ...

Page 9: ... IRref current range of the reference resistor 10 100 µA Temperature related input NTC Vi co input voltage level for detecting temperature cut off 0 75 0 81 0 87 V Vi co max maximum input voltage level for detecting temperature cut off 0 92 1 0 1 08 V Vi co min minimum input voltage level for detecting temperature cut off 1 85 2 0 2 15 V INTC input current VNTC 1 5 V 5 5 µA Output drivers δLED LED...

Page 10: ...ith the combination of Cosc and Rref where tosc 0 93 Rref Cosc Rref can be chosen between 13 and 120 kΩ but a 27 kΩ resistor is recommended The oscillator capacitor can be calculated which is 668 pF the nearest higher practical value is 680 pF In the trickle charge mode the LED output will pulsate with a repetition time ttrickle 2 exp14 tosc 0 28 s The duty factor of the pulse is 2 5 of ttrickle T...

Page 11: ...EA1104 TEA1104T Fig 6 Basic application diagram handbook full pagewidth MGE357 LED VP Vs Vbat TEA1104 GND OSC Vref NTC LED1 FAST BAW62 5 1 kΩ 1 2 kΩ 47 kΩ 100 kΩ 270 Ω BD434 BC548 BC548 LED 2 FULL Cosc Rref R4 R3 R2 R1 4 cells VP 6 5 to 12 V θ current supply Fig 7 Application diagram handbook full pagewidth MGE358 TEA1104 6 8 4 3 1 7 5 2 θ ...

Page 12: ... o 0 25 0 1 0 25 DIMENSIONS inch dimensions are derived from the original mm dimensions Notes 1 Plastic or metal protrusions of 0 15 mm maximum per side are not included 2 Plastic or metal protrusions of 0 25 mm maximum per side are not included 1 0 0 4 SOT96 1 X w M θ A A1 A2 bp D HE Lp Q detail X E Z e c L v M A A 3 A 4 5 pin 1 index 1 8 y 076E03S MS 012AA 0 069 0 010 0 004 0 057 0 049 0 01 0 01...

Page 13: ...inal mm dimensions A min A max b max w ME e1 1 73 1 14 0 53 0 38 0 36 0 23 9 8 9 2 6 48 6 20 3 60 3 05 0 254 2 54 7 62 8 25 7 80 10 0 8 3 1 15 4 2 0 51 3 2 inches 0 068 0 045 0 021 0 015 0 014 0 009 1 07 0 89 0 042 0 035 0 39 0 36 0 26 0 24 0 14 0 12 0 01 0 10 0 30 0 32 0 31 0 39 0 33 0 045 0 17 0 020 0 13 b2 050G01 MO 001AN MH c e 1 ME A L seating plane A1 w M b1 e D A2 Z 8 1 5 4 b E 0 5 10 mm sc...

Page 14: ...s are suitable for all SO packages Reflow soldering requires solder paste a suspension of fine solder particles flux and binding agent to be applied to the printed circuit board by screen printing stencilling or pressure syringe dispensing before package placement Several techniques exist for reflowing for example thermal conduction by heated belt Dwell times vary between 50 and 300 seconds depend...

Page 15: ...et contains target or goal specifications for product development Preliminary specification This data sheet contains preliminary data supplementary data may be published later Product specification This data sheet contains final product specifications Limiting values Limiting values given are in accordance with the Absolute Maximum Rating System IEC 134 Stress above one or more of the limiting val...

Page 16: ...stan Philips Electrical Industries of Pakistan Ltd Exchange Bldg ST 2 A Block 9 KDA Scheme 5 Clifton KARACHI 75600 Tel 021 587 4641 49 Fax 021 577035 5874546 Philippines PHILIPS SEMICONDUCTORS PHILIPPINES Inc 106 Valero St Salcedo Village P O Box 2108 MCC MAKATI Metro MANILA Tel 63 2 816 6380 Fax 63 2 817 3474 Portugal PHILIPS PORTUGUESA S A Rua dr António Loureiro Borges 5 Arquiparque Miraflores ...

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