TLED2043 Datasheet, PDF (1/16 Pages) Texas Instruments – 4-CHANNEL WHITE LED DRIVER

TLED2043
4-CHANNEL WHITE LED DRIVER
SLDS147C – JUNE 2002 – REVISED NOVEMBER 2002
D Integrated FETs with Low R_DS-ON . . .
6 Ω Max
D Current-Controlled Output Drives That Are
Proportional to Battery Voltage to Save
Power
D Integrated Power-Supply Switches for
Power Savings During OFF State . . .
1 µA Max
D Up to 89% Efficiency
D Applications: LCD Display for Cell Phones,
PDAs, Palmtops, etc.
PW PACKAGE
(TOP VIEW)
S1 1
D1 2
SW 3
V_IN1 4
V_OUT1 5
IN+ 6
IN– 7
FB 8
S2 9
D2 10
20 S4
19 D4
18 V_IN2
17 V_OUT2
16 GND
15 V_IN3
14 V_OUT3
13 NC
12 S3
11 D3
NC – No internal connection
GQN PACKAGE
(TOP VIEW)
1234
A
B
C
D
E
terminal assignments
1
2
3
A
D1
S1
S4
B
VIN1
C
IN+
D
FB
VOUT2
VOUT1
NC
SW
VIN3
IN–
E
D2
S2
D3
NC – No internal connection
4
D4
VIN2
GND
VOUT3
S3
TERMINAL
D1, D2, D3, D4
S1, S2, S3, S4
VIN1, VIN2, VIN3
VOUT1, VOUT2, VOUT3
SW
IN+
IN–
FB
GND
DESCRIPTION
Drain of FETs 1, 2, 3, and 4, respectively
Source of FETs 1, 2, 3, and 4, respectively
Input of switches 1, 2, and 3, respectively
Output of switches 1, 2, and 3, respectively
Operates switches 1, 2, and 3 in unison
Low input = switches are closed
High input or Open = switches are open
Noninverting input to current-control amplifier
Inverting input to current-control amplifier
Provides feedback connection to IN– of
current-control amplifier
Device ground
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.
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.
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Copyright  2002, Texas Instruments Incorporated
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