900,000+ datasheet pdf search and download

Datasheet4U offers most rated semiconductors data sheet pdf




Linear Technology Electronic Components Datasheet

LTC3625EDE Datasheet

1A High Efficiency 2-Cell Supercapacitor Charger

No Preview Available !

LTC3625/LTC3625-1
1A High Efficiency 2-Cell
Supercapacitor Charger
with Automatic Cell
Balancing
Features
n High Efficiency Step-Up/Step-Down Charging of Two
Series Supercapacitors
n Automatic Cell Balancing Prevents Capacitor
Overvoltage During Charging
n Programmable Charging Current Up to 500mA
(Single Inductor), 1A (Dual Inductor)
n VIN = 2.7V to 5.5V
n Selectable 2.4V/2.65V Regulation per Cell (LTC3625)
n Selectable 2V/2.25V Regulation per Cell (LTC3625-1)
n Low No-Load Quiescent Current: 23µA
n IVOUT, IVIN < 1µA in Shutdown
n Low Profile 12-lead 3mm × 4mm DFN Package
Applications
n Servers, RAID Systems, Mass Storage, High Current
Backup Supplies
n Solid State Hard Drives
n Wireless Power Meters
n High Peak Power Boosted Supplies
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the property
of their respective owners.
Description
The LTC®3625/LTC3625-1 are programmable supercapaci-
tor chargers designed to charge two supercapacitors in
series to a fixed output voltage (4.8V/5.3V or 4V/4.5V
selectable) from a 2.7V to 5.5V input supply. Automatic
cell balancing prevents overvoltage damage to either
supercapacitor while maximizing charge rate. No balancing
resistors are required.
High efficiency, high charging current, low quiescent cur-
rent and low minimum external parts count (one inductor,
one bypass capacitor at VIN and one programming resistor)
make the LTC3625/LTC3625-1 ideally suited for small form
factor backup or high peak power systems.
Charging current/maximum input current level is pro-
grammed with an external resistor. When the input supply is
removed and/or the EN pin is low, the LTC3625/LTC3625-1
automatically enter a low current state, drawing less than
1µA from the supercapacitors.
The LTC3625/LTC3625-1 are available in a compact
12‑lead 3mm × 4mm × 0.75mm DFN package.
Typical Application
1A SCAP Charger
VIN
2.7V TO 5.5V
VIN
10µF
LTC3625
61.9k
PROG
VOUT
SW2
SW1
VMID
3.3µH
3.3µH
PFI
EN
CTL
VSEL
PGOOD
PFO
3625 TA01a
VOUT
4.8V
CTOP ≥ 0.1F
CBOT ≥ 0.1F
Charging Two 2:1 Mismatched Supercapacitors
6
CTOP = 50F
5
CBOT = 100F
RPROG = 61.9k
CTL = 0
4 VSEL = 0
VOUT
3
2
VMID
1
0
0 20 40 60 80 100 120 140 160 180 200
TIME (SECONDS)
3625 TA01b
3625f



Linear Technology Electronic Components Datasheet

LTC3625EDE Datasheet

1A High Efficiency 2-Cell Supercapacitor Charger

No Preview Available !

LTC3625/LTC3625-1
Absolute Maximum Ratings
(Note 1)
VIN, VOUT (Transient) t < 1ms,
Duty Cycle < 1%........................................... –0.3V to 7V
VIN, VOUT, VMID, PGOOD,
CTL, PROG, PFI, PFO.................................... –0.3V to 6V
EN, VSEL........................................... –0.3V to VIN + 0.3V
VOUT Short-Circuit Duration............................. Indefinite
IPGOOD, IPFO............................................................50mA
IPROG........................................................................1mA
IVIN, ISW1, ISW2, IVOUT (Note 2)....................................3A
Operating Junction Temperature Range
(Notes 3, 4)............................................ –40°C to 125°C
Storage Temperature Range................... –65°C to 125°C
Pin Configuration
TOP VIEW
SW1 1
VIN 2
CTL 3
VSEL 4
EN 5
PROG 6
12 SW2
11 VOUT
13
10 VMID
GND
9 PGOOD
8 PFO
7 PFI
DE PACKAGE
12-LEAD (4mm s 3mm) PLASTIC DFN
TJMAX = 125°C, θJA = 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
12-Lead (4mm × 3mm) Plastic DFN
–40°C to 125°C
LTC3625EDE-1#PBF
LTC3625IDE#PBF
LTC3625IDE-1#PBF
LTC3625EDE-1#TRPBF
LTC3625IDE#TRPBF
LTC3625IDE-1#TRPBF
36251
3625
36251
12-Lead (4mm × 3mm) Plastic DFN
12-Lead (4mm × 3mm) Plastic DFN
12-Lead (4mm × 3mm) Plastic DFN
–40°C to 125°C
–40°C to 125°C
–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.
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 The l denotes the specifications which apply over the full operating
junction temperature range, otherwise specifications are at TA = 25°C. VIN = 3.6V, RPROG = 143k, unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX UNITS
VIN
VIN(UVLO)
Input Voltage Range
Input Undervoltage Lockout
(VIN Rising)
Input UVLO Hysteresis
VSEL = VIN (LTC3625)
VSEL = 0V (LTC3625)
VSEL = 0V or VIN (LTC3625-1)
l VIN(UVLO)
l 2.8
2.9
l 2.53
2.63
l 2.53
2.63
100
5.5
V
3.0
V
2.73
V
2.73
V
mV
VOUT(SLEEP)
VTOP , VBOT
Charger Termination Voltage
Recharge Hysteresis
Maximum Voltage Across Either of
the Supercapacitors After Charging
Maximum Supercapacitor Offset
After Charging
VSEL = VIN (LTC3625)
VSEL = 0V (LTC3625)
VSEL = VIN (LTC3625-1)
VSEL = 0V (LTC3625-1)
Below VOUT(SLEEP)
VSEL = VIN, VOUT = 5.3V (LTC3625)
VSEL = 0V, VOUT = 4.8V (LTC3625)
VSEL = VIN, VOUT = 4.5V (LTC3625-1)
VSEL = 0V, VOUT = 4V (LTC3625-1)
CTL = 0V
CTL = VIN
l 5.2
l 4.7
l 4.4
l 3.9
l
l
l
l
5.3
5.4
V
4.8
4.9
V
4.5
4.6
V
4.0
4.1
V
135
mV
2.7
2.75
V
2.45
2.5
V
2.3
2.35
V
2.05
2.1
V
100
180
mV
50
120
mV
3625f



Part Number LTC3625EDE
Description 1A High Efficiency 2-Cell Supercapacitor Charger
Maker Linear
PDF Download

LTC3625EDE Datasheet PDF






Similar Datasheet

1 LTC3625EDE 1A High Efficiency 2-Cell Supercapacitor Charger
Linear
2 LTC3625EDE-1 1A High Efficiency 2-Cell Supercapacitor Charger
Linear





Part Number Start With

0    1    2    3    4    5    6    7    8    9    A    B    C    D    E    F    G    H    I    J    K    L    M    N    O    P    Q    R    S    T    U    V    W    X    Y    Z



Site map

Webmaste! click here

Contact us

Buy Components

Privacy Policy