LTC4555
2
4555fc
For more information www.linear.com/LTC4555
V
BAT
, DV
CC
, V
CC
to GND ............................ –0.3V to 6.5V
Digital Inputs to GND ................................ –0.3V to 6.5V
CLK, RST, I/O to GND .......................–0.3V to V
CC
+ 0.3V
V
CC
Short-Circuit Duration ................................... Infinite
Operating Temperature Range (Note 2).... –40°C to 85°C
Junction Temperature ........................................... 125°C
Storage Temperature Range ................... –65°C to 125°C
(Note 1)
16 15 14 13
5 6 7 8
17
UD PACKAGE
16-LEAD (3mm × 3mm) PLASTIC QFN
9
10
11
12
4
3
2
1SHDN
V
SEL
DV
CC
NC
NC
CLK
GND
RST
NC
DATA
R
IN
C
IN
V
BAT
NC
V
CC
I/O
T
JMAX
= 125°C, θ
JA
= 68°C/W, θ
JC
= 4.2°C/W
EXPOSED PAD (PIN 17) IS GND, MUST BE SOLDERED TO PCB
LEAD FREE FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC4555EUD#PBF LTC4555EUD#TRPBF LAAA
16-Lead (3mm × 3mm) Plastic QFN
–40°C to 85°C
Consult LTC Marketing for parts specified with wider operating temperature ranges.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/. Some packages are available in 500 unit reels through
designated sales channels with #TRMPBF suffix.
pin conFiguraTionabsoluTe MaxiMuM raTings
elecTrical characTerisTics
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C.
PARAMETER CONDITIONS MIN TYP MAX UNITS
V
BAT
Operating Voltage
l
3 6 V
V
BAT
Operating Current I
CC
= 0mA
l
20 30 µA
V
BAT
Shutdown Current SHDN = 0V, V
BAT
= 4.5V
l
1 µA
DV
CC
Operating Voltage
l
1.2 4.4 V
DV
CC
Operating Current f
CLK
= 1MHz
l
5 10 µA
DV
CC
Shutdown Current SHDN = 0V
l
1 µA
DV
CC
Undervoltage Lockout
l
0.5 1.1 V
V
CC
Output Voltage V
SEL
= DV
CC
, V
BAT
= 3V, I
VCC
= 50mA
V
SEL
= DV
CC
, V
BAT
= 3.3V to 6V, I
VCC
= 0mA to 50mA
V
SEL
= 0, V
BAT
= 2.6V to 6V, I
VCC
= 0mA to 50mA
l
l
2.8
1.7
2.8
3.0
1.8
3.2
1.9
V
V
V
V
CC
Short-Circuit Current V
CC
Shorted to GND 60 110 175 mA
Controller Inputs/Outputs
Input Voltage Range SHDN, V
SEL
, R
IN
, C
IN
, DATA 0 DV
CC
V
Input Current (I
IH
/I
IL
) SHDN, V
SEL
, R
IN
, C
IN
l
–100 100 nA
High Input Threshold Voltage (V
IH
) R
IN
, C
IN
l
0.7 × DV
CC
V
Low Input Threshold Voltage (V
IL
) R
IN
, C
IN
l
0.2 × DV
CC
V
High Input Threshold Voltage (V
IH
) SHDN, V
SEL
l
1 V
Low Input Threshold Voltage (V
IL
) SHDN, V
SEL
l
0.4 V
orDer inForMaTion
http://www.linear.com/product/LTC4555#orderinfo
