LTC3441 Linear Technology, LTC3441 Datasheet - Page 3

• Manufacturer Part Number: LTC3441
• Description: Dual DC/DC Converter with USB Power Manager and Li-Ion Battery Charger
• Manufacturer: Linear Technology

temperature range, otherwise specifications are at T
V
PARAMETER
Battery-V
V
V
V
Gain Block
AI Pin Threshold Voltage
AI Pin/FB2 Pin Voltage Difference
AI Pin Input Bias Current
AO Pin Sink Current
AO Pin Voltage
Switching Regulators
FB1, FB2 Voltage
FB1, FB2 Voltage Line Regulation
FB1, FB2 Voltage Burst Mode Hysteresis
FB1, FB2 Pin Input Bias Current
Switching Frequency
PMOS Switch On-Resistance
NMOS Switch On-Resistance
PMOS Switch Current Limit
USB Power Manager
USB Undervoltage Lockout Voltage
USB Undervoltage Lockout Hysteresis
USB Minimum Voltage to Charge Battery
USB PMOS Switch On-Resistance
USB Current Limit
USB Suspend Mode Bias Current
SUSPEND Pin Threshold
USBHP Pin Threshold
SUSPEND Pin Pulldown Current
USBHP Pin Pulldown Current
Hot Swap Output
Hot Swap PMOS Switch On-Resistance
Hot Swap PMOS Switch Current Limit
HSON Pin Threshold
HSON Pin Pulldown Current
ELECTRICAL CHARACTERISTICS
MAX
MAX
MAX
USB
PMOS Switch On-Resistance
Switch Current Limit
Switch Current Limit at Startup
= 0V, V
MAX
PMOS
WALLFB
= 0V unless otherwise noted.
CONDITIONS
With V
V
V
V
V
V
V
V
Both Switchers
Both Switchers
Both Switchers
Switcher 1
Switcher 2
From Low to High
V
V
V
V
V
V
V
V
FB2
AI
AI
AI
MAX
MODE
FB1
USB
USB
USB
USB
SUSPEND
USBHP
HSI
HSI
= 0.85V
= 0.6V, V
= 0.6V, I
= 3.3V
= 3.3V, V
– V
= V
= 5V
= 5V, V
= 5V, V
= 5V, V
= 3V to 5V
MAX
= 2V
= 0.5V
AI
FB2
= 0.5V
Rising, V
AO
= 0.85V
AO
USBHP
USBHP
SUSPEND
HSO
= 1mA
A
= 1.5V
= 25 C. V
= 2.5V
= 2V
= 0V
MAX
= 2V
The
= 3V, V
BAT
denotes the specifications which apply over the full operating
BAT
= 3.6V, V
= 3.6V
MAX
= 3.6V, V
PWRON
= 2V, V
0.784
0.784
3.75
MIN
450
700
440
120
2.5
0.4
1.0
1.2
–8
60
ON
is open, V
0.805
0.805
0.15
0.01
0.35
0.45
3.90
TYP
600
900
150
475
160
4.0
0.9
1.8
0.8
1.5
4.0
0.5
0.8
0.8
2.5
2.5
0.9
0.8
2.5
80
0
8
4
1
1
LTC3455
ON2
0.826
0.826
MAX
1200
4.10
850
500
100
2.5
1.2
1.8
1.1
1.1
1.1
20
8
25
25
= 0V,
UNITS
3
MHz
3455f
%/V
mV
mA
mV
mA
mA
mV
mA
mA
mA
nA
nA
V
V
A
A
V
V
V
A
V
V
A
A
V
A