LT3467AEDDB#TRMPBF Linear Technology, LT3467AEDDB#TRMPBF Datasheet - Page 11

• Manufacturer Part Number: LT3467AEDDB#TRMPBF
• Description: IC CONV DC/DC STEP UP 8-DFN
• Manufacturer: Linear Technology
• Type: Step-Up (Boost)r

Specifications of LT3467AEDDB#TRMPBF

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 1.26 ~ 40 V
• Current - Output: 1.1A
• Frequency - Switching: 2.1MHz
• Voltage - Input: 2.4 ~ 16 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-DFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -

APPLICATIONS INFORMATION
Using the circuit of Figure 2 as an example, the following
table shows the parameters used to generate the Bode
plot shown in Figure 7.
TYPICAL APPLICATIONS
2.7V TO 4.2V
2.2μF
V
IN
C1
Figure 7. Bode Plot of 3.3V to 5V Application
–10
–20
–30
–40
–50
50
40
30
20
10
C1, C2: X5R OR X7R, 6.3V
D1: ON SEMICONDUCTOR MBRM120
L1: SUMIDA CR43-2R2
0
100
0.047μF
Lithium-Ion to 6V Step-Up DC/DC Converter
SHDN
C4
GAIN
PHASE
1k
SS
FREQUENCY (Hz)
SHDN
V
IN
LT3467
2.2μH
10k
GND
L1
SW
FB
100k
D1
133k
501k
R2
R1
3467 F07
1M
0
–45
–90
–135
–180
–225
–270
–315
–360
–405
–450
C3
1.8pF
3467 TA02
C2
15μF
V
6V
275mA AT V
490mA AT V
590mA AT V
OUT
Table 3. Bode Plot Parameters
*2.1MHz for LT3467A
From Figure 7, the phase is –138° when the gain reaches
0dB giving a phase margin of 42°. This is more than
adequate. The crossover frequency is 37kHz.
PARAMETER
IN
IN
IN
= 2.7V
= 3.8V
= 4.2V
C
R
V
g
g
C
V
R
R
R
R1
R2
C
OUT
ESR
OUT
f
ma
mp
L
PL
IN
S
O
C
L
C
VALUE
10.4
1.3*
100
402
133
0.4
3.3
3.3
7.5
2.7
15
10
60
35
5
95
90
85
80
75
70
65
60
55
50
50
LT3467/LT3467A
100
UNITS
μmho
mho
MHz
mΩ
MΩ
kΩ
kΩ
kΩ
μH
μF
pF
pF
Ω
V
V
200
V
IN
Li-Ion to 6V
300
COMMENT
Application Specifi c
Application Specifi c
Application Specifi c
Not Adjustable
Not Adjustable
Adjustable
Not Adjustable
Adjustable
Adjustable
Application Specifi c
Application Specifi c
Not Adjustable
Not Adjustable
Application Specifi c
Not Adjustable
= 2.7V
I
OUT
(mA)
400
V
IN
500
= 3.8V
V
IN
600
= 4.2V
3467 TA02b
11
3467afe
700