LT3439EFE#PBF Linear Technology, LT3439EFE#PBF Datasheet - Page 2

• Manufacturer Part Number: LT3439EFE#PBF
• Description: IC PUSH-PULL CNTRLR SYNC 16TSSOP
• Manufacturer: Linear Technology
• Type: Push-Pull Controllerr

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

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