LTC3230_15 Datasheet, PDF (2/16 Pages) Linear Technology – 5-LED Main/Sub Display Driver with Dual LDO

LTC3230
ABSOLUTE MAXIMUM RATINGS
(Notes 1-5)
V_IN, CPO....................................................... –0.3V to 6V
ENM, ENS, ENLDO1, ENLDO2,
V1, V2, LDO1, LDO2 ......................–0.3V to (V_IN + 0.3V)
I_CPO (Note 2) ........................................................200mA
LD01, LD02 (Note 3)............................................200mA
MLED1-4, SLED, R_SET.................................. –0.3V to 6V
Operating Ambient Temperature Range
(Note 4).................................................... –40°C to 85°C
Junction Temperature ........................................... 125°C
Storage Temperature Range................... –65°C to 150°C
PIN CONFIGURATION
TOP VIEW
20 19 18 17 16
CPO 1
15 LDO1
ENLDO1 2
14 LDO2
ENLDO2 3
21
13 V1
R_SET 4
12 V2
ENS 5
11 ENM
6 7 8 9 10
UD PACKAGE
20-LEAD (3mm × 3mm) PLASTIC QFN
T_JMAX = 125°C, θ_JA = 68°C/W
EXPOSED PAD (PIN 21) IS GND, MUST BE SOLDERED TO PCB
ORDER INFORMATION
LEAD FREE FINISH
TAPE AND REEL
PART MARKING
PACKAGE DESCRIPTION
LTC3230EUD#PBF
LTC3230EUD#TRPBF
LCYB
20-Lead (3mm × 3mm) Plastic QFN
Consult LTC Marketing for parts specified with wider operating temperature ranges.
Consult LTC Marketing for information on non-standard lead based finish parts.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/
TEMPERATURE RANGE
–40°C to 85°C
ELECTRICAL CHARACTERISTICS The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T_A = 25°C. V_IN = 3.6V, C1 = C2 = C4 = C5 = C6 = 1μF, R_SET = 17.4k, ENM = ENS =
high, ENLDO1 = ENLDO2 = low, unless otherwise noted.
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V_IN Operating Voltage
I_VIN Operating Current
I_CPO = 0, 1x Mode
I_CPO = 0, 1.5x Mode
I_CPO = 0, 2x Mode
V_IN Shutdown Current
ENM = ENS = ENLD02 = ENLD01 = Low
MLED1, MLED2, MLED3, MLED4 and SLED Currents
●
2.7
5.5
V
0.48
mA
1.2
mA
1.6
mA
●
3
9
μA
LED Current Ratio (I_LED/I_RSET)
LED Dropout Voltage
LED Current Matching
MLED/SLED Current, 5-Bit Linear DAC
Unused LED Detection
Mode Switch Threshold, I_MLED = 15mA
Any Two MLED Outputs, I_MLED = Full Scale
1 ENM/ENS Strobe (FS)
31 ENM/ENS Strobes (FS/31)
555
A/A
100
mV
0.5
%
25.5
mA
0.860
mA
Threshold Voltage
Test Current
V_CPO – MLED
LED Tied to CPO
● 200
●
39
780
mV
178
μA
3230fa
2