LTC3455EUF#TRPBF Linear Technology, LTC3455EUF#TRPBF Datasheet - Page 2

• 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: -

ABSOLUTE MAXIMUM RATINGS
LTC3455/LTC3455-1
(Note 1)
Transient (t < 1ms and Duty Cycle < 1%):
Steady State:
SW1, SW2 Voltages ................... –0.3V to (V
TIMER Voltage ........................... –0.3V to (V
PWRON, ON, ON2, HSON Voltages ............. –0.3V to 6V
PBSTAT, RST, CHRG, AO Voltages ............... –0.3V to 6V
HSI, HSO Voltages ....................................... –0.3V to 6V
MODE, USBHP , SUSPEND Voltages.............. –0.3V to 6V
WALLFB, AI, PROG Voltages ........................ –0.3V to 2V
FB1, FB2 Voltages ........................................ –0.3V to 2V
Junction Temperature ........................................... 125°C
Operating Temperature Range (Note 2).... –40°C to 85°C
Storage Temperature Range- ................. –65°C to 125°C
ORDER INFORMATION
LEAD FREE FINISH
LTC3455EUF#PBF
LTC3455EUF-1#PBF
Consult LTC Marketing for parts specifi ed with wider operating temperature ranges.
Consult LTC Marketing for information on non-standard lead based fi nish parts.
For more information on lead free part marking, go to:
For more information on tape and reel specifi cations, go to:
ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifi cations are at T
V
PARAMETER
Battery Undervoltage Lockout Voltage
Battery Undervoltage Lockout Hysteresis
V
ON Pin Threshold
PWRON Pin Threshold
ON2 Pin Threshold
MODE Pin Threshold
WALLFB Pin Threshold Voltage
WALLFB Pin Hysteresis
2
BAT
USB
V
V
Burst Mode, Battery Powered
PWM Mode, Battery Powered
USB Powered
Wall Powered
Shutdown
Pin Quiescent Current (Note 3)
MAX
BAT
= 0V, V
, V
USB Voltages .................................. –0.3V to 7V
MAX
WALLFB
, USB Voltages ........................ –0.3V to 6V
= 0V unless otherwise noted.
TAPE AND REEL
LTC3455EUF#TRPBF
LTC3455EUF-1#TRPBF
CONDITIONS
V
V
V
V
V
V
WALLFB Rising
WALL
BAT
ON2
ON2
USB
PWRON
Rising
= V
= 1V, V
= 5V, Charger Off
= 1.5V, V
= 0V, V
MODE
http://www.linear.com/leadfree/
MODE
PART MARKING
3455
34551
= 1V, Not Switching
MAX
MAX
MAX
MAX
http://www.linear.com/tapeandreel/
A
= 0V, Not Switching
= 25°C. V
= 4.5V, Charger Off
= 0V
+ 0.3V)
+ 0.3V)
The
l
BAT
denotes the specifi cations which apply over the full operating
= 3.6V, V
PIN CONFIGURATION
PACKAGE DESCRIPTION
24-Lead (4mm × 4mm) Plastic QFN
24-Lead (4mm × 4mm) Plastic QFN
MAX
= 3.6V, V
EXPOSED PAD (PIN 25) IS GND, MUST BE SOLDERED TO PCB
SUSPEND
USBHP
TIMER
PROG
CHRG
FB1
T
24-LEAD (4mm 4mm) PLASTIC QFN
JMAX
PWRON
1
2
3
4
5
6
= 125°C, θ
l
24
7
= 2V, V
UF PACKAGE
23 22 21 20 19
8
1.20
MIN
2.9
TOP VIEW
JA
9
= 37°C/W, θ
25
ON
10 11 12
is open, V
1.23
TYP
450
110
500
3.0
0.8
0.8
0.8
0.8
JC
10
10
60
2
= 4.3°C/W
TEMPERATURE RANGE
–40°C to 85°C
–40°C to 85°C
18
17
16
15
14
13
ON2
FB2
AO
AI
HSON
HSO
HSI
MAX
1.26
160
800
3.2
1.1
1.0
1.0
1.0
20
20
= 0V,
4
UNITS
3455fc
mV
mV
μA
μA
μA
μA
μA
V
V
V
V
V
V