Datasheet
LTC3230
2
3230fa
PIN CONFIGURATIONABSOLUTE MAXIMUM RATINGS
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
(Notes 1-5)
20 19 18 17 16
7 8
TOP VIEW
21
UD PACKAGE
20-LEAD (3mm × 3mm) PLASTIC QFN
9
10
CPO
ENLDO1
ENLDO2
R
SET
ENS
LDO1
LDO2
V1
V2
ENM
C1P
C2P
V
IN
C1M
C2M
SLED
MLED1
MLED2
MLED3
MLED4
12
11
13
14
15
4
5
3
2
1
6
T
JMAX
= 125°C, θ
JA
= 68°C/W
EXPOSED PAD (PIN 21) IS GND, MUST BE SOLDERED TO PCB
ORDER INFORMATION
ELECTRICAL CHARACTERISTICS
PARAMETER CONDITIONS MIN TYP MAX UNITS
V
IN
Operating Voltage
●
2.7 5.5 V
I
VIN
Operating Current I
CPO
= 0, 1x Mode
I
CPO
= 0, 1.5x Mode
I
CPO
= 0, 2x Mode
0.48
1.2
1.6
mA
mA
mA
V
IN
Shutdown Current ENM = ENS = ENLD02 = ENLD01 = Low
●
39 μA
MLED1, MLED2, MLED3, MLED4 and SLED Currents
LED Current Ratio (I
LED
/I
RSET
) 555 A/A
LED Dropout Voltage Mode Switch Threshold, I
MLED
= 15mA 100 mV
LED Current Matching Any Two MLED Outputs, I
MLED
= Full Scale 0.5 %
MLED/SLED Current, 5-Bit Linear DAC 1 ENM/ENS Strobe (FS)
31 ENM/ENS Strobes (FS/31)
25.5
0.860
mA
mA
Unused LED Detection
Threshold Voltage V
CPO
– MLED
●
200 780 mV
Test Current LED Tied to CPO
●
39 178 μA
The ● denotes the specifi cations which apply over the full operating
temperature range, otherwise specifi 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.
LEAD FREE FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC3230EUD#PBF LTC3230EUD#TRPBF LCYB 20-Lead (3mm × 3mm) Plastic QFN –40°C to 85°C
Consult LTC Marketing for parts specifi ed with wider operating temperature ranges.
Consult LTC Marketing for information on non-standard lead based fi nish parts.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specifi cations, go to: http://www.linear.com/tapeandreel/