LT3439EFE#PBF Linear Technology, LT3439EFE#PBF Datasheet - Page 2
![IC PUSH-PULL CNTRLR SYNC 16TSSOP](/photos/7/34/73402/161-16-tssop_sml.jpg)
LT3439EFE#PBF
Manufacturer Part Number
LT3439EFE#PBF
Description
IC PUSH-PULL CNTRLR SYNC 16TSSOP
Manufacturer
Linear Technology
Type
Push-Pull Controllerr
Datasheet
1.LT3439EFEPBF.pdf
(12 pages)
Specifications of LT3439EFE#PBF
Internal Switch(s)
Yes
Synchronous Rectifier
No
Number Of Outputs
1
Current - Output
1A
Frequency - Switching
20kHz ~ 250kHz
Voltage - Input
2.8 ~ 17.5 V
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
16-TSSOP Exposed Pad, 16-eTSSOP, 16-HTSSOP
Primary Input Voltage
17.5V
No. Of Outputs
1
Output Voltage
35V
Output Current
1A
No. Of Pins
16
Operating Temperature Range
-40°C To +125°C
Msl
MSL 1 - Unlimited
Rohs Compliant
Yes
Pin Count
16
Input Voltage
17.5V
Switching Freq
20 to 250KHz
Package Type
TSSOP EP
Output Type
Adjustable
Switching Regulator
Yes
Mounting
Surface Mount
Input Voltage (min)
2.8V
Operating Temp Range
-40C to 125C
Operating Temperature Classification
Automotive
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Voltage - Output
-
Power - Output
-
Lead Free Status / Rohs Status
Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
LT3439
ABSOLUTE AXI U RATI GS
(Note 1)
V
COL A, COL B Voltage ............................................. 35V
SHDN, SYNC Voltage .............................................. 20V
Maximum Junction Temperature ......................... 150 C
Operating Junction Temperature Range
Storage Temperature Range ................ – 65 C to 150 C
Lead Temperature (Soldering, 10 sec)................. 300 C
ELECTRICAL CHARACTERISTICS
SYMBOL
Supply and Shutdown
V
V
I
I
V
V
I
Oscillator and Sync
f
f
V
R
Output Switches (COL A, COL B)
DC
BV
R
I
Slew Control
V
V
I
I
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
The
V
2
VIN
VIN(SHDN)
SHDN
MAX
SYNC
LIM(MAX)
SLEWR
SLEWF
IN
IN(MIN)
SHDN(ON)
SHDN(OFF)
SYNC
SLEWR
SLEWF
IN
SYNC
ON
IN
(Note 2) ............................................ – 40 C to 125 C
= 5V; R
Voltage ............................................................. 20V
denotes specifications which apply over the full operating temperature range, otherwise specifications are at T
T
= 16.9k; C
PARAMETER
Operating Range
Minimum Input Voltage
Supply Current
Supply Current in Shutdown Mode
Shutdown Turn-On Threshold
Shutdown Turn-Off Threshold
Shutdown Pin Current Hysteresis
Oscillator Frequency
Synchronization Frequency Range
SYNC Pin Threshold
SYNC Pin Input Resistance
Switch Duty Cycle
Output Switch Breakdown Voltage
Output Switch On Resistance
Switch Current Limit
Output Voltage Slew Rising Edge
Output Voltage Slew Falling Edge
Output Current Slew Rising Edge
Output Current Slew Falling Edge
W
T
= 680pF; R
W W
SL
= 16.9k; COL A, COL B, SHDN pins open, unless otherwise noted.
U
CONDITIONS
2.8V V
2.8V V
2.8V V
2.8V V
2.8V V
2.8V V
I
Collector A or B
Collector A or B
Collector A or B
Collector A or B
COLA
or I
IN
IN
IN
IN
IN
IN
COLB
17.5V
17.5V, V
17.5V
17.5V
17.5V, V
17.5V
= 0.75A
PACKAGE/ORDER I FOR ATIO
Consult LTC Marketing for parts specified with wider operating temperature ranges.
Note 2: The LT3439E is guaranteed to meet performance specifications
from 0 C to 70 C. Specifications over the –40 C to 125 C operating
junction temperature range are assured by design, characterization and
correlation with statistical process controls.
NOTE: BACKSIDE OF PACKAGE CONNECTED TO GND
SHDN
SHDN
COL A
PGND
SYNC
R
NC
NC
R
C
SL
T
T
T
= 0V
= 1.4V
JMAX
16-LEAD PLASTIC TSSOP
1
2
3
4
5
6
7
8
= 125 C,
FE PACKAGE
TOP VIEW
JA
= 40 C/ W
16
15
14
13
12
11
10
9
PGND
NC
COL B
V
NC
SHDN
GND
NC
IN
1.20
MIN
2.8
1.2
10
35
U
2.55
1.26
TYP
1.3
1.4
0.5
1.4
12
20
40
50
50
17
17
5
5
5
ORDER PART
LT3439EFE
MARKING
NUMBER
W
3439EFE
FE PART
A
MAX
17.5
2.25
0.95
1.65
= 25 C.
250
300
2.7
1.4
20
40
sn3439 3439fs
UNITS
U
V/ s
V/ s
A/ s
A/ s
kHz
kHz
mA
k
%
V
V
A
V
V
A
V
V
A