LTC3455EUF#TRPBF Linear Technology, LTC3455EUF#TRPBF Datasheet - Page 5

• 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: -

TYPICAL PERFORMANCE CHARACTERISTICS
4.00
3.75
3.50
3.25
3.00
2.75
2.50
815
810
805
800
795
790
785
500
400
300
200
100
0
–50
–50
–50
Feedback Pins (FB1, FB2)
and AI Pin Voltage
USB Pin Current Limit
Battery Undervoltage Lockout
V
USB
–25
–25
–25
= 5V
0
0
0
TEMPERATURE (°C)
TEMPERATURE (°C)
TEMPERATURE (°C)
FB2
FALLING
RISING
USBHP = 2V
USBHP = 0V
25
25
25
50
50
50
FB1
AI
75
75
75
100
100
100
3455 G04
3455 G10
3455 G07
125
125
125
4.00
3.75
3.50
3.25
3.00
2.75
2.50
2.0
1.5
1.0
0.5
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
0
–50
–50
–50
Switching Regulator Oscillator
Frequency
V
USB Undervoltage Lockout
STARTUP
MAX
–25
–25
–25
Pin Current Limit
FOR BOTH SWITCHERS
0
0
0
TEMPERATURE (°C)
TEMPERATURE (°C)
TEMPERATURE (°C)
NORMAL OPERATION
RISING
25
25
25
50
50
50
FALLING
75
75
75
100
100
100
3455 G05
3455 G08
3455 G11
125
125
125
LTC3455/LTC3455-1
1000
1.26
1.24
1.22
1.20
1.18
1.16
1.14
1.12
1.10
200
150
100
800
600
400
200
50
0
0
–50
–50
–50
Switching Regulator Current Limit
HSO Pin Current Limit
WALLFB Trip Voltage
V
V
HSI
HSO
–25
–25
–25
= 3.3V
= 2.5V
0
0
0
TEMPERATURE (°C)
TEMPERATURE ( C)
TEMPERATURE (°C)
SWITCHER 2
RISING
FALLING
SWITCHER 1
25
25
25
50
50
50
75
75
75
100
100
100
3455 G09
3455 G06
3455 G12
3455fc
5
125
125
125