LT3439EFE#PBF Linear Technology, LT3439EFE#PBF Datasheet - Page 11

• 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

TYPICAL APPLICATIO
PACKAGE DESCRIPTIO
V
5V
IN
C1: TAIYO YUDEN JMK212BJ475KG
C3-C6: SANYO OS-CON 20SVQP47M
C9, C10: SANYO OS-CON 16SVQPA39M
C11: AVX 1206AC222MA11A
D1-D4: MMBD914
L1, L2: COILCRAFT DT1608C-333
T1: COILTRONICS CTX02-16030
C
820pF
T
C1
4.7 F
R
16.9k
T
11
5
6
7
SHDN
SYNC
C
R
6.60 0.10
T
T
NOTE:
1. CONTROLLING DIMENSION: MILLIMETERS
2. DIMENSIONS ARE IN
3. DRAWING NOT TO SCALE
GND
(.0036 – .0079)
0.09 – 0.20
10
LT3439
4.50 0.10
V
RECOMMENDED SOLDER PAD LAYOUT
IN
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-
tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
13
PGND
COLA
COLB
1, 16
R
U
SL
(.169 – .177)
SEE NOTE 4
4.30 – 4.50*
U
3
14
4
Low Noise 5V to 12V Push-Pull DC Transformer
(.018 – .030)
(.108)
0.45 – 0.75
MILLIMETERS
2.74
0.65 BSC
(INCHES)
R
16.9k
SI
•
•
0.45 0.05
T1
16-Lead Plastic TSSOP (4.4mm)
(Reference LTC DWG # 05-08-1663)
2.2nF
C11
(.108)
1kV
•
•
2.74
Exposed Pad Variation BA
1.05 0.10
D4
D3
D2
D1
*DIMENSIONS DO NOT INCLUDE MOLD FLASH. MOLD FLASH
4. RECOMMENDED MINIMUM PCB METAL SIZE
SHALL NOT EXCEED 0.150mm (.006") PER SIDE
FOR EXPOSED PAD ATTACHMENT
FE Package
0 – 8
R8
10k
+
+
C3
47 F
C5
47 F
(.0256)
0.65
BSC
OPTIONAL
OPTIONAL
47 F
47 F
L1
L2
16 1514 13 12 11
C4
1
C6
(.0077 – .0118)
0.195 – 0.30
2
+
(.193 – .201)
3 4 5 6 7 8
4.90 – 5.10*
+
(.108)
2.74
IN
IN
10
GND
GND
LT1761-BYP
LT1964-BYP
49.9k
49.9k
9
(.002 – .006)
BYP
BYP
0.05 – 0.15
R2
R4
FE16 (BA) TSSOP 0203
ADJ
ADJ
(.108)
(.0433)
OUT
OUT
2.74
MAX
1.10
6.40
BSC
3439 TA02
R1
442k
R3
442k
C7
0.01 F
C8
0.01 F
+
+
C9
39 F
C10
39 F
LT3439
V
12V
80mA
V
–12V
80mA
OUT
OUT
sn3439 3439fs
11