Texas Instruments TWL2203PFBR, TWL2203PFB Datasheet
TWL2203
POWER SUPPLY MANAGEMENT IC
SLVS185 – FEBRUAR Y 2000
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
D
Li-Ion Battery Charging Control
D
Over-Voltage Shutdown
D
Seven Low-Dropout Low-Noise Linear
Voltage Regulators (LDO)
D
Voltage Detectors (With Power-Off Delay)
D
Four-Channel Analog Multiplexer
D
Three General-Purpose Operational
Amplifiers
D
Ringer Driver
D
Power Supply Switch for Accessories
D
Low Quiescent Current
D
48-pin TQFP
14 15
RINGON
RING
VOUT6
DET_DELAY
VOUT2
V
CC
VSUP
VOUT4
VOUT5
VOUT3
VOUT1
EN3
36
35
34
33
32
31
30
29
28
27
26
25
16
1
2
3
4
5
6
7
8
9
10
11
12
VREF
MUXOUT
MUXIN0
MUX0
MUX1
MUXIN1
MUXIN2
MUXIN3
OP1I–
OP1I+
OP2I–
OP2I+
17 18 19 20
TCOUTVBCH
VG2
47 46 45 44 4348 42
VEXT
IADJ
VG1
ICH+
VOUT7
EN4
EN1
EN2
OP1O
OP3O
GND
DET2
VCH
DET1
40 39 3841
21
22 23 24
37
13
GNDRING
ICH-
ENOP_MUX
OP3I–
OP3I+
OP2O
PFB PACKAGE
(TOP VIEW)
description
The TWL2203 incorporates a complete power-management system for a cellular telephone that uses
lithium-ion cells. The device includes circuitry to control the gate voltage of two P-channel MOSFETs. The
MOSFETs perform constant-voltage/constant-current charging (CVCC). The TWL2203 has seven low-drop
linear voltage regulators (LDO) to regulate the battery power supply to the different sections of the phone, a
battery voltage monitor, a ringer driver , an analog multiplexer , and three general-purpose operational amplifiers
for signal conditioning.
The TWL2203 is packaged in TI’s 48-pin thin-quad flat package (PFB).
Copyright 2000, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
MicroStar is a trademark of Texas Instruments Incorporated.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
TWL2203
POWER SUPPLY MANAGEMENT IC
SLVS185 – FEBRUAR Y 2000
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
AVAILABLE OPTIONS
PACKAGE
T
A
PLASTIC THIN-QUAD FLAT PACKAGE
(PFB)
–30°C to 85°C TWL2203PFB
functional block diagram
M
U
X
4.2 V
Regulation
CVCC
Charge
Switch
Control
Trickle
Charge
Current
Control
Current Limit
Control
Over-
Voltage
Shutdown
VDET1
VREF
LDO REG 7
EN4
VDET2
VEXT
DET1
VREF
DET2
DET_DELAY
Power Switch
EN3
EN2
EN1
LDO REG 1
VOUT1
LDO REG 2
VOUT2
LDO REG 3
VOUT3
LDO REG 4
VOUT4
LDO REG 5
VOUT5
LDO REG 6
VOUT6
Ringer DriveRING
RINGON
MUXOUT
MUXIN0
MUXIN1
MUXIN2
MUXIN3
MUX0
MUX1
_
+
_
+
_
+
ENOP_MUX
OP1I+
OP1I–
OP1O
OP12+
OP12–
OP2O
OP12+
OP13–
OP3O
VG1 VCH IADJ ICH+
ICH-
VG2 TCOUT
CH
VB
VSUP
VCC
VOUT7
VOUT2
TWL2203
POWER SUPPLY MANAGEMENT IC
SLVS185 – FEBRUAR Y 2000
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
Terminal Functions
TERMINAL
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-kΩ 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
V
B
40 I Battery voltage input for charging control
V
CC
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
TWL2203
POWER SUPPLY MANAGEMENT IC
SLVS185 – FEBRUAR Y 2000
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
Terminal Functions (Continued)
TERMINAL
NO.
I/O DESCRIPTION
NAME
QFB
VOUT3 27 O LDO REG 3 output 3
VOUT4 29 O LDO REG 4 output 4
VOUT5 28 O LDO REG 5 output 5
VOUT6 34 O LDO REG 6 output 6
VOUT7 44 O LDO REG 7 output 7
VREF 1 O Voltage-reference bypass output
VSUP 30 O Power-supply switch output
detailed description
battery-charging control
The battery charging control block in the device is a part of the lithium-ion battery (Li-Ion) charging system of
the phone. It is capable of regulating the external power source to charge the lithium-ion battery according to
the battery-charging requirements. More information on battery-charging control is presented in the
application
information
section.
The MOSFET driver and its feedback-control circuit are enabled/disabled by a CMOS control signal provided
by the phone’s microprocessor . The maximum-charging current is set by external resistors for design flexibility .
overvoltage shutdown
The device shuts down the charging circuit in the presence of an overvoltage condition.
low-dropout linear voltage regulators
The device has seven separate low-dropout linear-voltage regulators. A single enable signal controls four of
the regulators. The last three regulators are controlled by their own enable signals.
voltage detectors (with power-off delay)
The device has two voltage detectors. The voltage detectors monitor the voltage level of the external power and
V
CC
. The external power detector (VDET1) has a CMOS output. The VCC detector (VDET2) activates on the
falling edge and has user-adjustable power-off delay. There is an internal pullup resistor on the output.
analog multiplexer
The device has a four-channel analog multiplexer with two-bit channel-selector signal input and a shutdown
function. In the shutdown mode, all the input and output terminals are in the high-impedance state.
operational amplifiers
The device has three rail-to-rail operational amplifiers with common shutdown control.
power supply switch for external phone accessories
The device provides current-limited voltage supply to the external phone accessories via the external-interface
connector. The power supply switch is controlled by the same enable signal (EN1) that controls the four
regulators—LDO1-LDO4. The external phone accessories are resistive in nature.
ringer driver
The device is capable of driving a ringer. It is controlled by a CMOS signal, and uses an N-channel low-side
driver.
TWL2203
POWER SUPPLY MANAGEMENT IC
SLVS185 – FEBRUAR Y 2000
5
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
DISSIPATION-RATING TABLE – FREE-AIR TEMPERA TURE
PACKAGE
TA <25°C
POWER RATING
OPERATING FACTOR
ABOVE TA = 25°C
TA = 70°C
POWER RATING
TA = 85°C
POWER RATING
PFB 1962 mW 15.7 mW/°C 1256 mW 1020 mW
absolute maximum ratings over operating free-air temperature (unless otherwise noted)
†
Supply-voltage range, V
CC
–0.3 V to 6.5 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
External-voltage range –0.3 V to 15 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output-voltage range –0.3 V to 6.5 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input-voltage range, all other pins –0.3 V to 6.5 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Continuous total-power dissipation See Dissipation-Rating Table. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Free-air temperature range –30°C to 85°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage-temperature range –65°C to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
†
Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
recommended operating conditions
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
pp
In regulation 2.85 3.75 4.25
Suppl
y v
oltage, V
CC
In transient condition 2.85 6
V
Allowable range 0 5.5 12
VEXT
Normal charging operation 4.6 5.5 6
V
VCH 2.1 6 V
High-level logic input, V
IH
2.1 V
Low-level logic input, V
IL
0.9 V
electrical characteristics over recommended operating junction temperature range, VCC = 3.75 V
and VEXT = 5.5 V (unless otherwise specified)
current table, TA = –40°C to 85°C
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
Shutdown current
EN1 = EN2 = EN3 = EN4 = ENOP_MUX = VCH =
CH = RINGON = VEXT = GND
50 90
Quiescent current
LDOreg. 1–4, power-switch quiescent current
EN1 = VOUT2, EN2 = EN3 = EN4 = ENOP_MUX
= VCH = CH = RINGON = VEXT = GND
210 350
Quiescent current
LDOreg. 1–5, power-switch quiescent current
EN1 = EN2 = VOUT2, EN3 = EN4 = ENOP_MUX
= VCH = CH = RINGON = VEXT = GND
240 400
Quiescent current
LDOreg. 1–6, power-switch quiescent current
EN1 = EN2 = EN3 = VOUT2, EN4 = ENOP_MUX
= VCH = CH = RINGON = VEXT = GND
270 450
µA
Quiescent current
LDOreg. 1–7, power-switch quiescent current
EN1 = EN2 = EN3 = EN4 = VOUT2, ENOP_MUX
= VCH = CH = RINGON = VEXT = GND
300 500
Quiescent current
LDOreg. 1–7, Power-switch, MUX, op amp
quiescent current
EN1 = EN2 = EN3 = EN4 = ENOP_MUX =
VOUT2, VCH = CH = RINGON = VEXT = GND
470 800
Quiescent current
LDOreg. 1–4, Power-switch, MUX, op amp
quiescent current
EN1 = ENOP_MUX = VOUT2, EN2 = EN3 = EN4
= RINGON = VCH = CH = VEXT = GND
370 700
LDOreg. 1–7, Power-switch, MUX, op amp, charger
quiescent current
VCH = 4.8 V, EN1 = EN2 = EN3 = EN4 =
ENOP_MUX = CH = VOUT2, RINGON = GND
2.5 4.0 mA
Loading...