LT3467AEDDB#TRMPBF Linear Technology, LT3467AEDDB#TRMPBF Datasheet - Page 5

• 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: -

PIN FUNCTIONS
FB (Pin 1/Pin 3): Feedback Pin. Reference voltage is 1.255V.
Connect resistive divider tap here. Minimize trace area at
FB. Set V
GND (Pins 2, 5, 9/Pin 2): Ground. Tie directly to local
ground plane.
SW (Pins 3, 4/Pin 1): Switch Pin. (Collector of internal
NPN power switch) Connect inductor/diode here and
minimize the metal trace area connected to this pin to
minimize EMI.
BLOCK DIAGRAM
SHUTDOWN
OUT
= 1.255V(1 + R1/R2).
V
SS
IN
V
OUT
R1 (EXTERNAL)
R2 (EXTERNAL)
SHDN
FB
(DFN/TSOT)
REFERENCE
1.255V
FB
+
–
A1
250k
Figure 1. Block Diagram
R
C
C
C
OSCILLATOR*
V
bypassed.
SS (Pin 7/Pin 5): Soft-Start Pin. Place a soft-start capacitor
here. Upon start-up, 4μA of current charges the capacitor
to 1.255V. Use a larger capacitor for slower start-up. Leave
fl oating if not in use.
SHDN (Pin 8/Pin 4): Shutdown Pin. Tie to 2.4V or more
to enable device. Ground to shut down.
GENERATOR
IN
1.3MHz
RAMP
(Pin 6/Pin 6): Input Supply Pin. Must be locally
–
+
*2.1MHz FOR LT3467A
COMPARATOR
A2
R
LT3467/LT3467A
S
Q
DRIVER
+
–
Q1
0.01Ω
3467 F01
SW
GND
3467afe
5