LTC3455EUF#TRPBF Linear Technology, LTC3455EUF#TRPBF Datasheet - Page 4

• Manufacturer Part Number: LTC3455EUF#TRPBF
• Description: IC CONV DC/DC DUAL USBBATT 24QFN
• Manufacturer: Linear Technology

Specifications of LTC3455EUF#TRPBF

• 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
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 LTC3455/LTC3455-1 are guaranteed to meet specifi ed
performance from 0°C to 85°C and is designed, characterized and
TYPICAL PERFORMANCE CHARACTERISTICS
temperature range, otherwise specifi cations are at T
V
PARAMETER
Hot Swap Output
Hot Swap PMOS Switch On-Resistance
Hot Swap PMOS Switch Current Limit
HSON Pin Threshold
HSON Pin Pulldown Current
Battery Charger
Regulated Charger V
Charger Current Limit (USB Powered)
Charger Current Limit (Wall Powered)
Recharge Battery Voltage Threshold
Trickle Charge Trip Threshold
Trickle Charge Trip Hysteresis
Trickle Charge Current
PROG Pin Current
PROG Pin Voltage
CHRG Pin Output Low Voltage
Timer Accuracy
Junction Temperature in Constant
Temperature Mode
4
USB
120
100
80
60
40
20
= 0V, V
0
–50
Burst Mode Quiescent Current
V
NOT SWITCHING
BAT
–25
= 3.6V
WALLFB
0
TEMPERATURE (°C)
BAT
= 0V unless otherwise noted.
BOTH SWITCHERS ENABLED
ONLY SWITCHER 1 ENABLED
25
Voltage
50
75
100
3455 G01
CONDITIONS
V
V
0°C ≤ T
0°C ≤ T
R
R
R
V
Battery Voltage Rising
R
Internal Pull-Up Current, No R
R
I
C
CHRG
HSI
HSI
PROG
PROG
PROG
BAT(REGULATED)
PROG
PROG
TIMER
125
= 3.3V
= 3.3V, V
= 5mA
= 2.49kΩ, V
= 2.49kΩ, V
= 2.49kΩ, V
= 2.49kΩ, V
= 2.49kΩ
A
A
= 0.1μF
≤ 85°C (LTC3455)
≤ 85°C (LTC3455-1)
600
500
400
300
200
100
HSO
0
–50
A
– V
PWM Mode Quiescent Current
= 2.5V
V
NOT SWITCHING
= 25°C. V
USBHP
USBHP
MAX
BAT
BAT
RECHARGE
–25
= 3.6V
= 2V
= 4.5V, 0°C ≤ T
The
= 2V, V
= 0V, V
0
l
TEMPERATURE (°C)
BAT
PROG
ONLY SWITCHER 1 ENABLED
denotes the specifi cations which apply over the full operating
BOTH SWITCHERS ENABLED
USB
USB
25
= 3.6V, V
expected to meet these extended temperature limits, but is not 100%
tested at –40°C and 85°C.
Note 3: Quiescent current is pulled from the V
or wall power is present, and from the V
power is present.
= 5V, 0°C ≤ T
= 5V, 0°C ≤ T
50
A
≤ 85°C
MAX
75
= 3.6V, V
100
A
A
≤ 85°C
≤ 85°C
3455 G02
125
PWRON
= 2V, V
4.158
4.058
5
4
3
2
1
0
MIN
–50
120
425
Shutdown Quiescent Current
V
BAT
–25
ON
= 3.6V
MAX
is open, V
4.200
2.85
1.23
0.75
TYP
160
400
500
150
±10
105
0
0.9
0.8
2.5
4.1
pin when either USB or Wall
50
60
65
TEMPERATURE (°C)
2
BAT
25
pin when neither USB
ON2
50
4.242
4.142
MAX
470
575
1.1
90
= 0V,
75
100
UNITS
3455 G03
3455fc
mA
mA
mA
mA
mV
mV
mA
125
μA
μA
°C
%
Ω
V
V
V
V
V
V