TWL2203

POWER SUPPLY MANAGEMENT IC

SLVS185 – FEBRUARY 2000

3

POST OFFICE BOX 655303

Terminal Functions

TERMINAL

NAME

NO.

I/O

DESCRIPTION

NAME

QFB

CH

39

I

CMOS signal input set to logic high to enable battery-charging function

DET_DELAY

33

I/O

Delay programming pin for VDET2

DET1

21

O

Voltage detector CMOS output

DET2

19

O

Voltage detector output with 40-k

Ω pull–up resistor

EN1

23

I

Set to logic high to enable LDO regulators 1–4 and power supply switch

EN2

24

I

Set to logic high to enable LDO regulator 5

EN3

25

I

Set to logic high to enable LDO regulator 6

EN4

22

I

Set to logic high to enable LDO regulator 7

ENOP_MUX

42

I

Set to logic high to enable the op amps and the analog multiplexer

GND

18

Ground for most sections of the device

GNDRING

37

Ringer ground

IADJ

47

I/O

Terminal for gain control of battery-charging current monitor

ICH–

43

I

Current-sense input/trickle charge, input/power supply to LDO regulator 7, and reference.

ICH+

45

I

Current-sense input

MUX0

4

I

Analog multiplexer channel selector bit-input (logic high is true)

MUX1

5

I

Analog multiplexer channel selector bit-input (logic high is true)

MUXIN0

3

I

Analog multiplexer input 0

MUXIN1

6

I

Analog multiplexer input 1

MUXIN2

7

I

Analog multiplexer input 2

MUXIN3

8

I

Analog multiplexer input 3

MUXOUT

2

O

Analog multiplexer output

OP1I–

9

I

Op amp 1 negative input

OP1I+

10

I

Op amp 1 positive input

OP1O

15

O

Op amp 1 output

OP2I–

11

I

Op amp 2 negative input

OP2I+

12

I

Op amp 2 positive input

OP2O

16

O

Op amp 2 output

OP3I–

14

I

Op amp 3 negative input

OP3I+

13

I

Op amp 3 positive input

OP3O

17

O

Op amp 3 output

RING

35

I

Ringer drive input

RINGON

36

I

Ringer enable (logic high to enable)

TCOUT

41

O

Trickle-charge output

VB

40

I

Battery voltage input for charging control

VCC

31

Power supply to most of the device

VCH

20

I

External power supply input for voltage detection

VEXT

48

I

External voltage input

VG1

46

O

MOSFET M1 gate drive

VG2

38

O

MOSFET M2 gate drive

VOUT1

26

O

LDO REG 1 output 1

VOUT2

32

O

LDO REG 2 output 2