LTC3455EUF#TRPBF Linear Technology, LTC3455EUF#TRPBF Datasheet - Page 3

• 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: -

ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifi cations are at T
V
PARAMETER
ON Pin Pullup Current
PWRON Pin Pulldown Current
ON2 Pin Pulldown Current
MODE Pin Pullup Current
WALLFB Pin Input Bias Current
PBSTAT Pin Low Voltage
RST Pin Low Voltage
RST Pulse Duration
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
MAX
MAX
MAX
USB
PMOS Switch On-Resistance
Switch Current Limit
Switch Current Limit at Startup
= 0V, V
MAX
WALLFB
PMOS
= 0V unless otherwise noted.
CONDITIONS
V
V
V
V
V
V
V
I
I
After FB1 and FB2 in Regulation
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
RST
RST
ON
PWRON
ON2
MODE
WALLFB
ON
ON
FB2
AI
AI
AI
MAX
MODE
FB1
USB
USB
USB
USB
SUSPEND
USBHP
= 0.85V
= 0.6V, V
= 0.6V, I
= 1V
= 0V, I
= 0V, I
= 100μA
= 1mA
– V
= V
= 1V
= 5V
= 5V, V
= 5V, V
= 5V, V
= 3V to 5V
MAX
= 1V
= 2V
= 0.5V
AI
FB2
= 1V
= 1.35V
= 0.5V
PBSTAT
PBSTAT
Rising, V
AO
= 0.85V
AO
USBHP
USBHP
SUSPEND
= 1mA
= 1.5V
A
= 100μA
= 1mA
= 25°C. V
= 2V
= 0V
MAX
= 2V
The
= 3V, V
l
BAT
denotes the specifi cations which apply over the full operating
BAT
= 3.6V, V
= 3.6V
MAX
= 3.6V, V
LTC3455/LTC3455-1
PWRON
l
l
l
l
l
l
l
= 2V, V
0.784
0.784
MIN
3.75
450
700
440
2.5
0.4
1.0
1.2
–8
60
ON
is open, V
0.805
0.805
0.02
0.20
0.02
0.20
0.15
0.01
0.35
0.45
3.90
TYP
200
600
900
150
475
4.0
4.0
2.5
2.5
2.5
2.5
0.9
1.8
0.8
1.5
0.5
0.8
0.8
2.5
2.5
±1
±1
±1
80
0
8
4
ON2
0.826
0.826
1300
MAX
0.10
0.35
0.10
0.35
4.10
±30
±25
±25
850
500
100
2.5
1.2
1.8
1.1
1.1
20
= 0V,
8
UNITS
3455fc
3
MHz
%/V
mV
mA
mV
mA
mA
mV
mA
mA
ms
μA
μA
μA
μA
nA
nA
nA
μA
μA
μA
Ω
Ω
Ω
Ω
V
V
V
V
A
A
V
V
V
V
V
V
V