LT3493EDCB#PBF Linear Technology, LT3493EDCB#PBF Datasheet - Page 12

• Manufacturer Part Number: LT3493EDCB#PBF
• Description: IC, STEP-DOWN PWM DC/DC CONVERTER, DFN-6
• Manufacturer: Linear Technology

Specifications of LT3493EDCB#PBF

• Primary Input Voltage: 36V
• No. Of Outputs: 1
• Output Current: 1.2A
• No. Of Pins: 6
• Operating Temperature Range: -40°C To +85°C
• Supply Voltage Range: 3.6V To 36V
• Switching Frequency Max: 815kHz
• Msl: MSL 1 - Unlimited
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

LT3493
APPLICATIONS INFORMATION
12
V
IN
V
MAX V
BOOST
V
BOOST
– V
IN
32.4k
FB
10k
SW
BOOST
LT3493
GND
32.4k
32.4k
FB
FB
V
10k
10k
Figure 4. Transient Load Response of the LT3493 With Different Output Capacitors
as the Load Current is Stepped from 250mA to 1A. V
V
IN
OUT
+ V
SW
OUT
(5a)
3.3nF
+
C3
Figure 5. Two Circuits for Generating the Boost Voltage
10μF
10μF
100μF
SANYO
4TPB100M
V
V
V
2
D2
OUT
OUT
OUT
3493 F05a
V
OUT
AC COUPLED
AC COUPLED
AC COUPLED
0.5A/DIV
0.1V/DIV
0.5A/DIV
0.1V/DIV
0.5A/DIV
0.1V/DIV
2A/DIV
2A/DIV
2A/DIV
I
I
I
V
V
V
LOAD
LOAD
LOAD
OUT
OUT
OUT
I
I
I
L
L
L
IN
V
IN
= 12V, V
V
MAX V
BOOST
OUT
V
BOOST
D2
IN
– V
40μs/DIV
40μs/DIV
40μs/DIV
= 3.3V, L = 10μH
SW
BOOST
LT3493
GND
2V
V
IN
IN
SW
(5b)
3493 F04a
3493 F04b
3493 F04c
C3
3493 F05b
V
OUT
3493fb