LTC3455EUF-1#PBF Linear Technology, LTC3455EUF-1#PBF Datasheet - Page 6

• Manufacturer Part Number: LTC3455EUF-1#PBF
• Description: IC DC/DC CONV DUAL CHRG 24-QFN
• Manufacturer: Linear Technology

Specifications of LTC3455EUF-1#PBF

• Applications: Handheld/Mobile Devices
• Voltage - Supply: 3 V ~ 6 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 24-QFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Supply: -

LTC3455/LTC3455-1
TYPICAL PERFORMANCE CHARACTERISTICS
6
4.30
4.25
4.20
4.15
4.10
4.05
4.00
1.50
1.25
1.00
0.75
0.50
0.25
600
500
400
300
200
100
0
0
–50
–50
0
Battery Charger Regulation
Voltage
Charge Current When
Wall-Powered
PROG Pin Voltage
vs Charge Current
V
V
R
V
V
R
T
THERMAL CONTROL
LOOP IN OPERATION
BAT
MAX
PROG
A
BAT
MAX
PROG
= 25°C
–25
–25
= 3.6V
= 3.6V
= 4.5V
= 4.5V
100
= 2.49k
= 2.49
CHARGE CURRENT (mA)
0
0
TEMPERATURE (°C)
TEMPERATURE (°C)
LTC3455-1
LTC3455
200
25
25
50
50
300
75
75
400
100
100
3455 G13
3455 G16
3455 G19
125
125
500
4.20
4.15
4.10
4.05
4.00
3.95
3.90
600
500
400
300
200
100
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
0
–50
–50
–50
Battery Charger Recharge
Threshold
Charge Current When
USB-Powered
R
Power Switches
V
V
V
R
BAT
THERMAL CONTROL
LOOP IN OPERATION
DS(ON)
BAT
USB
PROG
–25
–25
–25
= 3.6V
= 3.6V
= 5V
= 2.49k
for Switching Regulator
0
0
0
TEMPERATURE (°C)
TEMPERATURE (°C)
TEMPERATURE (°C)
LTC3455-1
LTC3455
V
V
25
25
25
NMOS
PMOS
USBHP
USBHP
50
50
50
= 2V
= 0V
75
75
75
100
100
100
3455 G14
3455 G17
3455 G20
125
125
125
15.0
12.5
10.0
7.5
5.0
2.5
3.0
2.9
2.8
2.7
2.6
2.5
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
0
–50
–50
–50
Battery Charger Trickle-Charge
Threshold
Battery Current When
USB- or Wall-Powered
R
PMOS Switches
V
CHARGER OFF
V
V
V
BAT
DS(ON)
HSI
USB
BAT
–25
–25
–25
= 4.2V
= 3.3V
= 3.6V
= 5V
for V
0
0
0
TEMPERATURE (°C)
TEMPERATURE (°C)
TEMPERATURE (°C)
FALLING
RISING
MAX
25
25
25
, USB, and HSO
V
HSO
USB
50
MAX
50
50
75
75
75
100
100
100
3455 G18
3455 G15
3455 G21
3455fc
125
125
125