
LTC3230
ABSOLUTE MAXIMUM RATINGS
(Notes 1-5)
V IN , CPO....................................................... –0.3V to 6V
ENM, ENS, ENLDO1, ENLDO2,
PIN CONFIGURATION
TOP VIEW
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
CPO 1
ENLDO1 2
ENLDO2 3
R SET 4
ENS 5
20 19 18 17 16
21
15 LDO1
14 LDO2
13 V1
12 V2
11 ENM
(Note 4).................................................... –40°C to 85°C
6
7
8
9 10
Junction Temperature ........................................... 125°C
Storage Temperature Range................... –65°C to 150°C
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
LTC3230EUD#PBF
TAPE AND REEL
LTC3230EUD#TRPBF
PART MARKING
LCYB
PACKAGE DESCRIPTION
20-Lead (3mm × 3mm) Plastic QFN
TEMPERATURE RANGE
–40°C to 85°C
Consult LTC Marketing for parts speci?ed with wider operating temperature ranges.
Consult LTC Marketing for information on non-standard lead based ?nish parts.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel speci?cations, go to: http://www.linear.com/tapeandreel/
ELECTRICAL CHARACTERISTICS The ● denotes the speci?cations which apply over the full operating
temperature range, otherwise speci?cations 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
V IN Operating Voltage
I VIN Operating Current
CONDITIONS
I CPO = 0, 1x Mode
●
MIN
2.7
TYP
0.48
MAX
5.5
UNITS
V
mA
I CPO = 0, 1.5x Mode
I CPO = 0, 2x Mode
1.2
1.6
mA
mA
V IN Shutdown Current
ENM = ENS = ENLD02 = ENLD01 = Low
●
3
9
μA
MLED1, MLED2, MLED3, MLED4 and SLED Currents
LED Current Ratio (I LED /I RSET )
555
A/A
LED Dropout Voltage
LED Current Matching
MLED/SLED Current, 5-Bit Linear DAC
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)
100
0.5
25.5
0.860
mV
%
mA
mA
Unused LED Detection
Threshold Voltage
Test Current
V CPO – MLED
LED Tied to CPO
●
●
200
39
780
178
mV
μA
3230fa
2