LTC3225/LTC3225-1
2
3225fb
PIN CONFIGURATION
ABSOLUTE MAXIMUM RATINGS
V
IN
, C
OUT
to GND ......................................... –0.3V to 6V
SHDN, V
SEL
...................................... –0.3V to V
IN
+ 0.3V
C
OUT
Short-Circuit Duration ............................. Indefi nite
I
VIN
Continuous (Note 2) ......................................350mA
I
OUT
Continuous (Note 2) .....................................175mA
Operating Temperature Range (Note 3).... –40°C to 85°C
Storage Temperature Range ................... –65°C to 125°C
(Note 1)
TOP VIEW
11
DDB PACKAGE
10-LEAD (3mm s 2mm) PLASTIC DFN
C
+
C
–
CX
SHDN
PGOOD
C
OUT
V
IN
GND
PROG
V
SEL
6
8
7
9
10
5
4
2
3
1
T
JMAX
= 125°C, θ
JA
= 76°C/W
EXPOSED PAD (PIN 11) MUST BE SOLDERED TO
LOW IMPEDANCE GND PLANE (PIN 8) ON PCB
ORDER INFORMATION
ELECTRICAL CHARACTERISTICS
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
LTC3225
V
IN-UVLO
Input Supply Undervoltage Lockout
High-to-Low Threshold
V
SEL
= V
IN
V
SEL
= 0
l
l
2.65
2.4
2.75
2.5
2.85
2.6
V
V
V
IN-UVLO-HYS
Input Supply Undervoltage Lockout
Hysteresis
V
SEL
= V
IN
V
SEL
= 0
150
140
mV
mV
V
IN
Input Voltage Range V
SEL
= V
IN
V
SEL
= 0V
l
l
3
2.8
5.5
5.5
V
V
V
COUT
Charge Termination Voltage
Sleep Mode Threshold (Rising Edge)
V
SEL
= V
IN
V
SEL
= 0V
l
l
5.2
4.7
5.3
4.8
5.4
4.9
V
V
V
COUT-HYS
Output Comparator Hysteresis 100 mV
V
TOP/BOT
Maximum Voltage Across Each of the
Supercapacitors After Charging
V
SEL
= V
IN
V
SEL
= 0V
l
l
2.75
2.5
V
V
LTC3225-1
V
IN-UVLO
Input Supply Undervoltage Lockout
High-to-Low Threshold
V
SEL
= V
IN
V
SEL
= 0
l
l
2.25
2.0
2.35
2.1
2.45
2.2
V
V
V
IN-UVLO-HYS
Input Supply Undervoltage Lockout
Hysteresis
V
SEL
= V
IN
V
SEL
= 0
150
140
mV
mV
The l 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, C
IN
= 2.2μF, C
FLY
= 1μF, unless otherwise specifi ed (Note 3).
Lead Free Finish
TAPE AND REEL (MINI) TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC3225EDDB#TRMPBF LTC3225EDDB#TRPBF LCYR
10-Lead (3mm × 2mm) Plastic DFN
–40°C to 85°C
LTC3225EDDB-1#TRMPBF LTC3225EDDB-1#TRPBF LFFS
10-Lead (3mm × 2mm) Plastic DFN
–40°C to 85°C
TRM = 500 pieces.
Consult LTC Marketing for parts specifi ed with wider operating temperature ranges.
Consult LTC Marketing for information on 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/
