LTC3225 Datasheet, PDF (2/12 Pages) Linear Technology – 150mA Supercapacitor Charger

LTC3225
ABSOLUTE MAXIMUM RATINGS
(Note 1)
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 ............................. Indefinite
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
PIN CONFIGURATION
TOP VIEW
C⁺ 1
C^– 2
CX 3
SHDN 4
PGOOD 5
10 C_OUT
9 V_IN
11 8 GND
7 PROG
6 V_SEL
DDB PACKAGE
10-LEAD (3mm s 2mm) PLASTIC DFN
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
Lead Free Finish
TAPE AND REEL (MINI) TAPE AND REEL
PART MARKING PACKAGE DESCRIPTION
LTC3225EDDB#TRMPBF LTC3225EDDB#TRPBF LCYR
10-Lead (3mm × 2mm) Plastic DFN
TRM = 500 pieces.
Consult LTC Marketing for parts specified with wider operating temperature ranges.
Consult LTC Marketing for information on 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 l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T_A = 25°C. V_IN = 3.6V, C_IN = 2.2μF, C_FLY = 1μF, unless otherwise specified.
SYMBOL PARAMETER
CONDITIONS
MIN TYP MAX UNITS
V_IN-UVLO
Input Supply Undervoltage Lockout
High-to-Low Threshold
V_SEL = V_IN
V_SEL = 0
l 2.65 2.75 2.85
V
l 2.4
2.5
2.6
V
V_IN-UVLO-HYS Input Supply Undervoltage Lockout
Hysteresis
V_SEL = V_IN
V_SEL = 0
150
mV
140
mV
V_IN
Input Voltage Range
V_SEL = V_IN
V_SEL = 0V
l
3
l 2.8
5.5
V
5.5
V
V_COUT
Charge Termination Voltage
Sleep Mode Threshold (Rising Edge)
V_SEL = V_IN
V_SEL = 0V
l 5.2
5.3
5.4
V
l 4.7
4.8
4.9
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
2.75
V
l
2.5
V
I_Q-VIN
I_SHDN-VIN
I_COUT
No Load Operating Current at V_IN
Shutdown Current
C_OUT Leakage Current
I_OUT = 0mA
l
SHDN = 0V, V_OUT = 0V
l
V_OUT = 5.6V, SHDN = 0V
l
V_OUT
V_OUT
=
=
5.6V,
5.6V,
Charge Pump in Sleep Mode
SHDN Connected to V_IN with
l
Input Supply Removed
20
40
μA
0.1
1
μA
1
3
μA
2
4
μA
1
μA
I_VIN
Input Charging Current
V_IN = 3.6V, R_PROG = 12k, C_TOP = C_BOT
V_IN = 3.6V, R_PROG = 60k, C_TOP = C_BOT
306
mA
55
mA
3225f
2