Datasheet

LT3572
2
3572fa
PIN CONFIGURATION
ABSOLUTE MAXIMUM RATINGS
V
OUT
Voltage .............................................................40V
OUTA, OUTA, OUTB, OUTB Voltage ...........................40V
SW Voltage ...............................................................42V
RT, SS, SYNC ..............................................................2V
FB ............................................................................... 3V
All Other Pins ............................................................10V
Maximum Junction Temperature........................... 125°C
Operating Temperature Range (Note 2).... –40°C to 85°C
Storage Temperature Range ................... –65°C to 125°C
(Note 1)
20 19 18 17 16
6 7 8
TOP VIEW
21
UF PACKAGE
20-LEAD (4mm s 4mm) PLASTIC QFN
9 10
5
4
3
2
1
11
12
13
14
15
SW
V
IN
SYNC
RT
GND
PGOOD
SS
FB
SHDNB
SHDNA
GND OUTA OUTA OUTB OUTB
PWMB PWMA
V
OUT
GND
SHDN
T
JMAX
= 125°C, θ
JA
= 37°C/W
EXPOSED PAD (PIN 21) IS GND, MUST BE SOLDERED TO PCB
ORDER INFORMATION
ELECTRICAL CHARACTERISTICS
PARAMETER CONDITIONS MIN TYP MAX UNITS
Minimum Operating Voltage
●
2.5 2.7 V
V
IN
Quiescent Current V
FB
= 1.3V 3.4 4 mA
V
IN
Shutdown Current V
SHDN
= V
SHDNA
= V
SHDNB
= 0V 0 1 μA
SHDN Pin Threshold 0.3 1.5 V
SHDNA Pin Threshold 0.3 1.5 V
SHDNB Pin Threshold 0.3 1.5 V
SHDN Pin Bias Current V
SHDN
= 5V, V
SHDNA
= 0V, V
SHDNB
= 0V
V
SHDN
= 0V, V
SHDNA
= 0V, V
SHDNB
= 0V
8
0.1
15
1
μA
μA
SHDNA Pin Bias Current V
SHDN
= 0V, V
SHDNA
= 5V, V
SHDNB
= 0V
V
SHDN
= 0V, V
SHDNA
= 0V, V
SHDNB
= 0V
8
0.1
15
1
μA
μA
SHDNB Pin Bias Current V
SHDN
= 0V, V
SHDNA
= 0V, V
SHDNB
= 5V
V
SHDN
= 0V, V
SHDNA
= 0V, V
SHDNB
= 0V
8
0.1
15
1
μA
μA
The ● denotes the specifi cations which apply over the full operating
temperature range, otherwise specifi cations are at T
A
= 25°C. V
IN
= 5V, V
SHDNA
= V
SHDNB
= V
SHDN
= 5V, unless otherwise noted.
LEAD FREE FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE
LT3572EUF#PBF LT3572EUF#TRPBF 3572 20-Lead (4mm × 4mm) Plastic DFN –40°C to 85°C
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: http://www.linear.com/leadfree/
For more information on tape and reel specifi cations, go to: http://www.linear.com/tapeandreel/