LT3970EDDB-3.3#PBF Linear Technology, LT3970EDDB-3.3#PBF Datasheet - Page 18

• Manufacturer Part Number: LT3970EDDB-3.3#PBF
• Description: IC, STEP-DOWN REGULATOR, DFN-10
• Manufacturer: Linear Technology

Specifications of LT3970EDDB-3.3#PBF

• Primary Input Voltage: 12V
• No. Of Outputs: 1
• Output Voltage: 3.3V
• Output Current: 350mA
• No. Of Pins: 10
• Operating Temperature Range: -40°C To +125°C
• Peak Reflow Compatible (260 C): Yes
• Msl: MSL 1 - Unlimited
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

TYPICAL APPLICATIONS
LT3970/LT3970-3.3/LT3970-5
14V TO 40V
18
2.2μF
V
C1
IN
–0.5
OFF ON
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
0
226k
f = 600kHz
Input Current During Start-Up
12V Step-Down Converter
2
EN
PG
RT
V
IN
INPUT VOLTAGE (V)
LT3970
4
GND
+
–
BOOST
kΩ
SW
BD
FB
6
5V Step-Down Converter with Reduced Input Current During Start-Up
INPUT CURRENT
DROPOUT
CONDITIONS
FRONT PAGE
APPLICATION
WITH EN
PROGRAMMED
TO 6V
FRONT PAGE
APPLICATION
8
C3
0.1μF
22pF
33μH
6V TO 40V
L1
10
5M
1M
2.2μF
3970 TA08b
V
IN
12
R1
1M
R2
113k
3490 TA06
226k
f = 600kHz
C2
22μF
V
12V
350mA
OUT
EN
PG
RT
V
IN
LT3970
GND
BOOST
TRANSIENTS
8.5V TO 16V
SW
BD
FB
TO 40V
V
1μF
C1
IN
5V/DIV
2V/DIV
0.22μF
22pF
Start-Up from High Impedance Input Source
V
22μH
OUT
V
OFF ON
IN
FRONT PAGE APPLICATION
V
1k INPUT SOURCE RESISTANCE
2.5mA LOAD
EN PROGRAMMED TO 6V
OUT
5V, 2MHz Step-Down Converter
49.9k
f = 2MHz
3490 TA08a
1M
316k
= 5V
EN
PG
RT
V
IN
LT3970
22μF
GND
V
5V
350mA
OUT
BOOST
5ms/DIV
SW
BD
FB
C3
0.1μF
22pF
10μH
L1
3970 TA08c
R1
1M
R2
316k
3490 TA07
C2
10μF
V
5V
350mA
3970fa
OUT