Datasheet
LTC3568
2
3568fa
elecTrical characTerisTics
absoluTe MaxiMuM raTings
PV
IN
, SV
IN
Voltages ..................................... –0.3V to 6V
V
FB
, I
TH
, SHDN/R
T
Voltages .......... –0.3V to (V
IN
+ 0.3V)
SYNC/MODE Voltage .................... –0.3V to (V
IN
+ 0.3V)
SW Voltage ................................... –0.3V to (V
IN
+ 0.3V)
PGOOD Voltage ............................................ –0.3V to 6V
Operating Junction Temperature Range
(Note 2) .............................................–40°C to 125°C
Junction Temperature (Notes 5, 8) ........................ 125°C
Storage Temperature Range ..................–65°C to 125°C
(Note 1)
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
IN
= 3.3V, R
T
= 324k unless otherwise specified. (Note 2)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
IN
Operating Voltage Range 2.25 5.5 V
I
FB
Feedback Pin Input Current (Note 3) ±0.1 µA
V
FB
Feedback Voltage LTC3568E (Note 3)
LTC3568I (Note 3)
l
l
0.784
0.780
0.8
0.8
0.816
0.816
V
V
ΔV
LINEREG
Reference Voltage Line Regulation V
IN
= 2.25V to 5V 0.04 0.2 %/V
ΔV
LOADREG
Output Voltage Load Regulation I
TH
= 0.36, (Note 3)
I
TH
= 0.84, (Note 3)
l
l
0.02
–0.02
0.2
–0.2
%
%
g
m(EA)
Error Amplifier Transconductance I
TH
Pin Load = ±5µA (Note 3) 800 µS
I
S
Input DC Supply Current (Note 4)
Active Mode
Sleep Mode
Shutdown
V
FB
= 0.75V, SYNC/MODE = 3.3V
V
SYNC/MODE
= 3.3V, V
FB
= 1V
V
SHDN/RT
= 3.3V
240
62
0.1
350
100
1
µA
µA
µA
V
SHDN/RT
Shutdown Threshold High
Active Oscillator Resistor
V
IN
– 0.6
324k
V
IN
– 0.4
1M
V
Ω
pin conFiguraTion
TOP VIEW
DD PACKAGE
10-LEAD (3mm s 3mm) PLASTIC DFN
10
11
9
6
7
8
4
5
3
2
1
I
TH
V
FB
PGOOD
SV
IN
PV
IN
SHDN/R
T
SYNC/MODE
SGND
SW
PGND
T
JMAX
= 125°C, θ
JA
= 43°C/W, θ
JC
= 3°C/W
EXPOSED PAD (PIN 11) IS GND, MUST BE SOLDERED TO PCB
orDer inForMaTion
LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC3568EDD#PBF LTC3568EDD#TRPBF LCSG
10-Lead (3mm × 3mm) Plastic DFN
–40°C to 125°C
LTC3568IDD#PBF LTC3568IDD#TRPBF LCSG
10-Lead (3mm × 3mm) Plastic DFN
–40°C to 125°C
LEAD
BASED FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC3568EDD LTC3568EDD#TR LCSG
10-Lead (3mm × 3mm) Plastic DFN
–40°C to 125°C
LTC3568IDD LTC3568IDD#TR LCSG
10-Lead (3mm × 3mm) Plastic DFN
–40°C to 125°C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
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/