(Notes 3, 4) ............................................ –40°C to 125°C
Storage Temperature Range .................. –65°C to 125°C
DE PACKAGE
12-LEAD (4mm 3mm) PLASTIC DFN
T
JMAX
= 125°C,
θ
JA
= 43°C/W
EXPOSED PAD (PIN 13) IS GND, MUST BE SOLDERED TO PCB
orDer inForMaTion
LEAD FREE FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LTC3625EDE#PBF
LTC3625EDE#TRPBF
3625
–40°C to 125°C
12-Lead (4mm
×
3mm) Plastic DFN
LTC3625EDE-1#PBF
LTC3625EDE-1#TRPBF
36251
–40°C to 125°C
12-Lead (4mm
×
3mm) Plastic DFN
LTC3625IDE#PBF
LTC3625IDE#TRPBF
3625
–40°C to 125°C
12-Lead (4mm
×
3mm) Plastic DFN
LTC3625IDE-1#PBF
LTC3625IDE-1#TRPBF
36251
–40°C to 125°C
12-Lead (4mm
×
3mm) Plastic DFN
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
Consult LTC Marketing for information on non-standard 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/
elecTrical characTerisTics
SYMBOL
V
IN
V
IN(UVLO)
PARAMETER
Input Voltage Range
Input Undervoltage Lockout
(V
IN
Rising)
Input UVLO Hysteresis
V
OUT(SLEEP)
Charger Termination Voltage
The
l
denotes the specifications which apply over the full operating
junction temperature range, otherwise specifications are at T
A
= 25°C. V
IN
= 3.6V, R
PROG
= 143k, unless otherwise specified.
CONDITIONS
V
SEL
= V
IN
(LTC3625)
V
SEL
= 0V (LTC3625)
V
SEL
= 0V or V
IN
(LTC3625-1)
V
SEL
= V
IN
(LTC3625)
V
SEL
= 0V (LTC3625)
V
SEL
= V
IN
(LTC3625-1)
V
SEL
= 0V (LTC3625-1)
Below V
OUT(SLEEP)
l
l
l
l
MIN
l
V
IN(UVLO)
l
2.8
l
2.53
l
2.53
l
l
l
l
TYP
2.9
2.63
2.63
100
5.3
4.8
4.5
4.0
135
2.7
2.45
2.3
2.05
100
50
MAX
5.5
3.0
2.73
2.73
5.4
4.9
4.6
4.1
2.75
2.5
2.35
2.1
180
120
UNITS
V
V
V
V
mV
V
V
V
V
mV
V
V
V
V
mV
mV
5.2
4.7
4.4
3.9
Recharge Hysteresis
V
TOP
, V
BOT
Maximum Voltage Across Either of V
SEL
= V
IN
, V
OUT
= 5.3V (LTC3625)
the Supercapacitors After Charging V
SEL
= 0V, V
OUT
= 4.8V (LTC3625)
V
SEL
= V
IN
, V
OUT
= 4.5V (LTC3625-1)
V
SEL
= 0V, V
OUT
= 4V (LTC3625-1)
Maximum Supercapacitor Offset
After Charging
CTL = 0V
CTL = V
IN
3625f
LTC3625/LTC3625-1
elecTrical characTerisTics
SYMBOL
I
VIN
PARAMETER
Input Operating Current,
I
SW1
= I
SW2
= 0µA, No Switching
Input Sleep Current
Input SD Current
I
VOUT
V
OUT
SD Current
V
OUT
Sleep Current
V
PROG
h
PROG
I
BUCK
I
MAX
V
MID(GOOD)
PROG Servo Voltage
Ratio of Measured I
PROG
Current to
I
BUCK
Programmed Current
Programmed Buck Charge Current
Maximum Programmed Charge
Current
V
MID
Voltage Where the Boost
Regulator is Enabled
V
MID(GOOD)
Hysteresis
V
TRICKLE
V
OUT
Voltage Above Which Boost
Regulator Will Exit Trickle Charge
Mode and Enter Normal Charge
Mode
V
TRICKLE
Falling Hysteresis
I
PEAK(BUCK)
I
VALLEY(BUCK)
I
PEAK(BOOST)
Buck Charge Current Peak
Buck Charge Current Valley
Boost Charge Current Peak
V
OUT
= 3V, V
MID
= 2V (Note 5)
V
OUT
= 1V, V
MID
= 2V (Note 5)
V
OUT
= 3V, V
MID
= 2V
V
OUT
= 1V, V
MID
= 2V
V
OUT
= 1V, V
MID
= 2V
1.59
1.41
V
OUT
Rising
R
PROG
= 143k (Note 5)
R
PROG
= 71.5k (Note 5)
R
PROG
= 0Ω (Fault Condition) (Note 5)
0.88
1.76
1.98
The
l
denotes the specifications which apply over the full operating
junction temperature range, otherwise specifications are at T
A
= 25°C. V
IN
= 3.6V, R
PROG
= 143k, unless otherwise specified.
CONDITIONS
CTL = V
IN
, V
MID
= 1.5V, V
OUT
= 2.5V (Boost Only)
CTL = V
IN
, V
MID
= 1.5V, V
OUT
= 3.5V (Buck Only)
CTL = 0, V
MID
= 1.5V, V
OUT
= 2.5V (Buck and Boost)
V
IN
= 5.5V, V
OUT
= 5.4V
V
IN
= 3.6V, V
OUT
= 5.4V
V
OUT
= 0V
V
OUT
= 5.4V
V
OUT
= 5.4V, V
IN
= 3.6V, EN = V
IN
V
OUT
= 5.4V, V
IN
= 5.5V, EN = V
IN
V
OUT
= 3.5V, V
MID
= 1.5V
l
MIN
TYP
135
275
365
23
8
0
0
17
1
MAX
200
400
530
35
15
1
1
25
2.5
1.23
UNITS
µA
µA
µA
µA
µA
µA
µA
µA
µA
V
1.17
1.2
118,000
0.99
1.98
2.65
1.35
150
V
MID
1.10
2.20
3.31
A
A
A
V
mV
V
50
1.1 • I
BUCK
0.9 • I
BUCK
2.12
200
1.88
0
6.5
120
100
EN = 0V
l
mV
A
A
2.65
2.35
A
mA
A
mA
µs
mΩ
mΩ
1
µA
V
mV
30
0.4
nA
V
V
1
µA
MΩ
MΩ
200
1
95
mV
µA
%
%
3625f
I
VALLEY(BOOST)
Boost Charge Current Valley
Maximum Boost Valley Time
R
PMOS
R
NMOS
I
LEAK
V
PFI
I
PFI
V
IL
V
IH
I
IL
, I
IH
R
PD
V
OL
I
OH
PMOS On-Resistance
NMOS On-Resistance
SW Pin Leakage Current for SW1,
SW2
PFI Falling Threshold
PFI Hysteresis
Pin Leakage Current for PFI Pin
Input Low Logic Voltage
Input High Logic Voltage
Input Low, High Current for CTL
EN Pin Pull-Down Resistance
V
SEL
Pin Pull-Down Resistance
Output Low Logic Voltage
Logic High Leakage Current
PGOOD Rising Threshold
PGOOD Hysteresis
Logic (EN, CTL, V
SEL
, PGOOD,
PFO)
1.17
1.2
15
0
1.23
EN, CTL, V
SEL
Pins
EN, CTL, V
SEL
Pins
CTL
l
l
1.2
4.5
EN = V
IN
PGOOD,
PFO
Pins; Sinking 5mA
PGOOD,
PFO
Pins; Pin Voltage = 5V
V
OUT
as a Percentage of Final Target
∆V
OUT
as a Percentage of Final Target
90
l
4.5
70
92.5
3
LTC3625/LTC3625-1
elecTrical characTerisTics
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2:
The LTC3625/LTC3625-1 internal switches are guaranteed to
survive up to 3A of peak current. Internal current limits will restrict peak
current to lower levels.
Note 3:
The LTC3625/LTC3625-1 are tested under pulsed load conditions
such that T
J
≈ T
A
. The LTC3625E/LTC3625E-1 are guaranteed to meet
specifications from 0°C to 85°C junction temperature. Specifications over
the –40°C to 125°C operating junction temperature range are assured by
design, characterization and correlation with statistical process controls.
The LTC3625I/LTC3625I-1 are guaranteed over the –40°C to 125°C
operating junction temperature range.
The junction temperature (T
J
in °C) is calculated from the ambient
temperature (T
A
in °C) and power dissipation (P
D
in Watts) according to
the formula:
T
J
= T
A
+ (P
D
•
θ
JA
)
where
θ
JA
(in °C/W) is the package thermal impedance.
Note 4:
This IC includes overtemperature protection that is intended to
protect the device during momentary overload conditions. The maximum
rated junction temperature will be exceeded when this protection is active.
Continuous operation above the specified maximum operating junction
temperature may impair device reliability or permanently damage the
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